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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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31-08-2017 дата публикации

Емкостный дифференциальный датчик угла поворота вала

Номер: RU0000173573U1
Автор: Николай Иванович Подлевский, Сергей Григорьевич Малофиенко, Юлия Владимировна Надымова
Принадлежит: Акционерное общество "Научно-производственный центр "Полюс"

Полезная модель относится к измерительной технике и может быть использована для измерения угла поворота вала механического устройства.Емкости датчика выполнены в виде токопроводящих пластин на диэлектрических дисках двух статоров, содержащих по две пластины, выполненные в форме секторов из токопроводящего материала и соединенных с выводами для подключения к измерительной схеме. Оба статора расположены неподвижно в корпусе датчика. Ротор жестко связан с поворотным валом и расположен соосно со статорами так, что при повороте вала в ту или другую сторону, одни емкости увеличиваются, а другие уменьшаются. Ротор выполнен в виде диска из двухстороннего фольгированного диэлектрика, на обеих сторонах которого выполнены токопроводящие пластины из фольги в форме сектора, соединенные между собой перемычкой и обращенные в сторону двух неподвижных статоров.Технический результат, достигаемый при реализации заявленного решения, состоит в повышении крутизны выходной характеристики датчика, достигаемой за счет использования развязывающего конденсатора. 5 ил. Ц 1 173573 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ п РЦ ‘’ (50) МПК СО1В 7/30 (2006.01) 2 зе) ил тех а (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2017107938, 10.03.2017 (24) Дата начала отсчета срока действия патента: 10.03.2017 Дата регистрации: 31.08.2017 Приоритет(ы): (22) Дата подачи заявки: 10.03.2017 (45) Опубликовано: 31.08.2017 Бюл. № 25 Адрес для переписки: 634050, г. Томск, пр. Кирова, 56в, АО "НПЦ "Полюс" (72) Автор(ы): Малофиенко Сергей Григорьевич (КО), Надымова Юлия Владимировна (КП), Подлевский Николай Иванович (КП) (73) Патентообладатель(и): Акционерное общество "Научно-производственный центр "Полюс" (КИ) (56) Список документов, цитированных в отчете о поиске: КП 145255 Ц1, 10.09.2014. КО 2378618 С2,10.01.2010. 50 1599644 АТ, 15.10.1990. 0$ 9303971 В1, 05.04.2016. (54) ЕМКОСТНЫЙ ДИФФЕРЕНЦИАЛЬНЫЙ ДАТЧИК УГЛА ПОВОРОТА ВАЛА (57) Реферат: Полезная модель ...

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Номер записи: 1
15-10-2020 дата публикации

Емкостный дифференциальный датчик угла поворота вала

Номер: RU0000200279U1
Автор: Александр Сергеевич Антонов, Николай Иванович Подлевский
Принадлежит: Акционерное общество "Научно-производственный центр "Полюс"

Полезная модель относится к измерительной технике и может быть использована для измерения угла поворота вала механического устройства.Сущность заявленного решения заключается в том, что двухполюсный источник питания постоянного тока своими полюсами связан с шинами питания схемы обработки сигнала, двух логических элементов НЕ и R-S триггера, прямой выход которого связан со входом первого элемента НЕ, выход которого связан со входом второго элемента НЕ, выход которого через резистор R2 связан со входом триггера R и анодом диода VD2, катод которого связан с выходом второго элемента НЕ, а выход первого элемента НЕ через резистор R1 связан со входом триггера S и анодом диода VD1, катод которого связан с выходом первого элемента НЕ, при этом входы триггера S и R связаны, соответственно, с секторами токопроводящих пластин первого статора, а кольцевая пластина второго статора связана с минусовой шиной питания двухполюсного источника и инверсный выход R-S триггера связан со входом схемы обработки сигнала.Технический результат при реализации заявленного решения заключается в повышение крутизны выходной характеристики сигнала и достигается за счет включения емкостей датчика, создаваемых токопроводящими пластинами статора и ротора, в схему генератора, реализованного на основе R-S триггера. 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 200 279 U1 (51) МПК G01B 7/30 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01B 7/30 (2020.05) (21)(22) Заявка: 2020118644, 27.05.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Акционерное общество "Научно-производственный центр "Полюс" (RU) Дата регистрации: 15.10.2020 (45) Опубликовано: 15.10.2020 Бюл. № 29 2 0 0 2 7 9 R U (54) ЕМКОСТНЫЙ ДИФФЕРЕНЦИАЛЬНЫЙ ДАТЧИК УГЛА ПОВОРОТА ВАЛА (57) Реферат: Полезная модель относится к измерительной триггера S и анодом диода VD1, катод которого технике и может быть использована для связан с выходом первого ...

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Номер записи: 2
02-02-2012 дата публикации

Rotation angle detector

Номер: US20120025811A1
Автор: Tomoyuki Harada
Принадлежит: Denso Corp

A rotation angle detector for detecting a rotation angle of a magnet rotator includes: the rotator with a magnet mounted on a rotation shaft; a sensor chip; and an operation element. The chip includes: first and second normal component detection elements for detecting a magnetic field along with a normal direction and first and second rotation component detection elements for detecting a magnetic field along with a rotation direction. A phase difference Δθ, output signals S 1 , S 2 , C 1 , C 2 of the detection elements, a value Δ θ b R obtained by differentiating a component of the magnetic field along with the normal direction with respect to the rotation direction, and a value Δ θ b θ obtained by differentiating a component of the magnetic field along with the rotation direction with respect to the rotation direction satisfies: S 1 - S 2 Δθ ≅ Δ θ  b R and C 1 - C 2 Δθ ≅ Δ θ  b θ The operation element calculates: C 1 + α   S 1 - S 2 Δθ and S 1 - β   C 1 - C 2 Δθ

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Номер записи: 3
16-02-2012 дата публикации

Angle detection apparatus and position detection apparatus

Номер: US20120038348A1
Автор: Kyohei Aimuta, Masahiro Mita
Принадлежит: Hitachi Metals Ltd

An angle detection apparatus comprising a magnet rotor having a multi-pole segment magnet, and a magnetic sensor for detecting the direction of a magnetic flux generated from the multi-pole segment magnet; the multi-pole segment magnet having pluralities of magnetic poles along the rotation direction of the magnet rotor, the magnetic sensor comprising a magnetosensitive plane having pluralities of spin-valve, giant-magnetoresistive devices each having a pinned layer having a fixed magnetization direction and a free layer having a magnetization direction rotating in response to the magnetic flux direction; and the magnetic sensor being positioned relative to the magnet rotor, such that the magnetosensitive plane crosses the magnetic flux, with perpendicular magnetic flux density components having different amplitudes on the magnetosensitive plane.

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Номер записи: 4
29-03-2012 дата публикации

Protection cover structure of slide detection apparatus for vehicle seat

Номер: US20120073369A1
Автор: Keiichiro Inoue, Michinori Kakumu, Naoki Maeda, Shinya Ando, Tomoyuki Takase, Yuya Suzuki
Принадлежит: Toyota Boshoku Corp

A protection cover structure of a slide detection apparatus for a vehicle seat is provided. The slide detection apparatus is configured to detect a slide state of the vehicle seat with a magnetic detector which is provided to one of a fixed rail and a movable rail configuring a slide rail mechanism of the vehicle seat, and a detectable member provided to the other of the rails. The protection cover structure includes a protection cover provided to the one rail and configured to cover and protect the magnetic detector. The protection cover integrally includes a side cover part which covers a side of the magnetic detector, and a cover part which covers a detection part of the magnetic detector. A tip end portion of the cover part is formed with a lip-shaped contact part which is configured to slidably contact a sidewall surface of the other rail.

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Номер записи: 5
07-06-2012 дата публикации

Angle of rotation detection device

Номер: US20120139533A1
Автор: Shizuo Manabe
Принадлежит: Toyota Motor Corp

An angle of rotation detection device includes an electrical angle detector (resolver and R/D converter) having the electrical angle of 360° set smaller than the mechanical angle of 360°, and providing a two-phase encoder signal corresponding to the electrical angle of a rotor; a two-phase encoder counter counting a two-phase encoder signal, and providing a digital value corresponding to the electrical angle, and a multiplication factor detector detecting which position of the mechanical angle the electrical angle indicated by the signal output from the detector corresponds to, based on a change of the count value from the two-phase encoder counter. Thus, there can be provided an angle of rotation detection device that can identify the position of the mechanical angle while using the two-phase encoder output.

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Номер записи: 6
14-06-2012 дата публикации

Coaxial cable connector, system and method of use thereof

Номер: US20120146662A1
Автор: Murat Ozbas
Принадлежит: PPC Broadband Inc

Disclosed herein is a coaxial cable connector that includes a backscattering arrangement configured to receive an RF signal in a coaxial transmission line and produce a modulated backscattered response. The modulated backscattered response corresponds to a sensed condition in the coaxial cable connector.

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Номер записи: 7
28-06-2012 дата публикации

Angular or linear magnetic position sensor not sensitive to external fields

Номер: US20120161755A1
Автор: Didier Frachon, Gerald Masson, Nikola Jerance, Richard Arlot, Thierry Dorge
Принадлежит: Moving Magnet Technologie SA

The invention relates to an angular or linear magnetic position sensor that comprises a mobile member including at least one magnet ( 1 ) having a magnetisation direction that varies linearly along the movement direction of the magnet in a surface defined by said movement direction and in a normal direction, at least four magneto-sensitive elements ( 2, 3 and 4, 5 ) and at least one processing circuit ( 6 ) providing a signal based on the absolute position of the mobile member, characterised in that a first set of magneto-sensitive elements ( 2, 3 ) and ( 4, 5 ) are located at a same point, the first couple of magneto-sensitive elements ( 2, 3 ) being spatially offset from a second couple of magneto-sensitive elements ( 4, 5 ) along the movement direction, and in that the magneto-sensitive elements ( 3 and 5 ) measure the tangential component of the magnetic field while the magneto-sensitive elements ( 2 and 4 ) measure the normal component of the magnetic field in order to provide, after algebraic combination of the components taken in pairs, two sinusoidal signals substantially having an electrical phase shift of 90°.

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Номер записи: 8
13-09-2012 дата публикации

Fixing structure for signal wires of a resolver

Номер: US20120229124A1
Автор: Chi-Lu Li, Chih-Yu Wang, Ming-Chih Lai
Принадлежит: Hiwin Mikrosystem Corp

A fixing structure for signal wires of a resolver is disposable on an end face of a stator of the resolver. The fixing structure includes a circuit board, a fixing section disposed on the circuit board for connecting the circuit board to the end face of the stator, a connection terminal seat disposed on the circuit board, multiple connection sections formed through the circuit board in the form of holes, and multiple bridge circuits respectively arranged between the corresponding connection sections and the connection terminal seat for bridging the corresponding connection sections and the connection terminal seat.

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Номер записи: 9
27-09-2012 дата публикации

Detection module of rotation spindle

Номер: US20120242329A1
Автор: Shou-Yu Chu
Принадлежит: Adlee Powertronic Co Ltd

A rotation spindle detection module includes a magnet retainer that retains at least one precision magnet and is mounted to a rotation spindle; at least one Hall device that detects the precision magnet and is arranged at a fixed position adjacent to the magnet retainer; a circuit board that is coupled to the Hall device and forms a circuit to receive a detection signal from the Hall device. As such, components that are used to detect a rotation spindle, including a Hall device, a precision magnet, and a circuit board, are integrated in a modularized fashion so as to achieve the purposes of easy mounting of the detection module to the rotation spindle.

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Номер записи: 10
11-10-2012 дата публикации

Relative angle detection device, rotation angle detection device, relative angle detection method, and rotation angle detection method

Номер: US20120256619A1
Автор: Hiroyuki Muto, Kiyokazu Okado, Tsukasa Suzuki
Принадлежит: Showa Corp

Disclosed is a relative angle detection device for detecting a relative angle between a first rotary shaft and a second rotary shaft, the relative angle detection device being provided with a first magnetic field sensing unit which outputs a value according to a magnetic field of a magnet, a second magnetic field sensing unit which outputs a value according to the magnetic field of the magnet and outputs a value different from the output value of the first magnetic field sensing unit even if being placed in the same magnetic field as that of the first magnetic field sensing unit, a correction unit which corrects one output value out of the output value of the first magnetic field sensing unit and the output value of the second magnetic field sensing unit in accordance with an amplitude ratio between magnetic field components orthogonal to each other in the magnetic field of the magnet, and a computing unit which computes the relative angle between the first rotary shaft and the second rotary shaft on the basis of the one output value corrected by the correction unit and the other output value different from the one output value. Consequently, a technique capable of detecting the relative rotation angle with high accuracy is provided even if magnitudes of amplitudes of magnetic field components orthogonal to each other in the magnetically sensitive surface of the magnetic field sensing unit are different from each other.

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Номер записи: 11
01-11-2012 дата публикации

Rotation Angle Measurement Assembly

Номер: US20120274315A1
Автор: Michael L. Rhodes, Ronald G. Landman
Принадлежит: Deere and Co

An assembly is provided comprising a member having a graduated edge that varies in radius with respect to an axis, and a sensor adjacent to the graduated edge, the member and the sensor are capable of rotating relative to one another. The sensor provides a signal level proportional to a distance between the sensor and the graduated edge, and the distance, between the sensor and the graduated edge, is indicative of a rotation angle of the member relative to the sensor.

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Номер записи: 12
27-12-2012 дата публикации

Magnetic encoder

Номер: US20120326708A1
Автор: Masakazu Sugimoto, Yasunori Abe
Принадлежит: Hitachi Metals Ltd

To provide a magnetic encoder that is stable relative to an outside force and has only small variation of a gap between a magnetic sensor and a magnetic medium. The magnetic encoder includes a magnetic medium placed on a first member and a magnetic sensor placed on the second member, the first and second member for moving relative to each other. The magnetic sensor includes a sensor substrate, a sensor holding plate for holding the sensor substrate, and a wire for extracting a signal from the magneto-resistive element to outside. The sensor holding plate includes a fixing portion for fixing the sensor holding plate to the second member, a sensor holding member for holding the sensor substrate, and a plurality of arm portions provided in the relative movement direction with the sensor holding member in-between and extending from the fixing portion to constitute a cantilever.

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Номер записи: 13
24-01-2013 дата публикации

Rotation angle and torque sensor

Номер: US20130019693A1
Автор: Johann Jahrstorfer, Valeri Klimenko
Принадлежит: Bourns Inc

The rotation-angle and torsion sensor has two gears that are connected so as not to turn with shaft sections, which [gears] mesh with gears. On one of the gears a unipolar or multipolar magnet is attached. On the other gear, magnetic flux guides matching to number of poles are attached, that are configured as L shapes. One leg of the flux tranducers points in the direction of the multipolar magnet while the other legs run parallel to the gear and in fact one on one side and the other on the other side of the gear, with these legs enclosing a second sensor between them that is situated in the gear.

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Номер записи: 14
31-01-2013 дата публикации

Sensor assembly and method for determining a magnetization direction of an indicator magnet

Номер: US20130027028A1
Автор: Hans-Peter Hohe, Josef Sauerer
Принадлежит: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV

A sensor assembly for determining a magnetization direction of an indicator magnet with respect to the sensor assembly includes a first magnetic field sensor for detecting a first and a second magnetic field component with respect to a first and a second spatial direction, and a second magnetic field sensor for detecting a third and a fourth magnetic field component with respect to the second spatial direction, wherein the first and the second magnetic field sensor are spaced apart from one another. Further, the sensor assembly includes a processor that is implemented to combine the first and the second magnetic field component to obtain a first combination quantity, to combine the third and the fourth magnetic field component to obtain a second combination quantity, to determine a position of the indicator magnet and the magnetization direction.

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Номер записи: 15
21-03-2013 дата публикации

ELECTROMAGNETIC COIL STRUCTURE HAVING A FLAT CONDUCTIVE TRACK, MAGNETIC CORE AND MAGNETO ELECTRONIC ANGLE SENSOR

Номер: US20130069475A1
Автор: Mertens Guus, Ocket Tom, Van Cauwenberge Jan, Van Tomme Marc
Принадлежит: TYCO ELECTRONICS BELGIUM EC BVBA

The present invention relates to an electromagnetic coil structure for being mounted on a magnetic core. Such a magnetic core is for instance a part of a rotating electric machine or of a magneto electronic angle sensor. The present invention further relates to a belonging magnetic core and to a magneto electronic angle sensor, in particular a reluctance resolver. Furthermore, the present invention relates to a method for fabricating such an angle sensor. The coil structure () comprises at least one electrically conductive winding formed as a flat conductive track (), and at least one flexible electrically insulating carrier () for carrying said winding. Said coil structure has at least one opening () for receiving a magnetic flux guiding element () of said core. The circumferential surface of the core whereto said electromagnetic coil structure () is mounted has a polygonal shape. 120.-. (canceled)21. Electromagnetic coil structure for being mounted on a magnetic core , said coil structure comprising:at least one electrically conductive winding formed as a flat conductive track;at least one flexible electrically insulating carrier for carrying said winding;wherein said structure can be mounted on said core to induce and/or receive a magnetic flux in said core.22. Electromagnetic coil structure according to claim 21 , wherein said coil structure has at least one opening for receiving a magnetic flux guiding element of said core.23. Electromagnetic coil structure according to claim 21 , wherein in a mounted state claim 21 , said coil structure is bent at least once to have a three-dimensional form.24. Electromagnetic coil structure according to claim 23 , wherein in a mounted state claim 23 , said coil structure is bent twice to encompass a magnetic core of a stator or a rotor in a U-shaped manner.25. Electromagnetic coil structure according to claim 21 , wherein said coil structure is bent several times to reduce the length of said coil structure for a reduced ...

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Номер записи: 16
04-04-2013 дата публикации

Device and method for processing signals which represent an angular position of a motor shaft

Номер: US20130082693A1
Автор: Boehl Eberhard
Принадлежит:

In an apparatus and a method for processing signals that represent an angular position of a shaft of a motor, a storage unit for storing arrival times of the signals in a memory is provided, the storage unit additionally evaluating a rotation direction datum of the shaft. Storage of the times in the memory is performed in a first sequence in the event of a rotation of the shaft in a first direction, and storage in the memory is performed in a second sequence that is opposite to the first sequence in the event of a rotation of the shaft in a second direction that is opposite to the first direction. 120-. (canceled)21. An apparatus for processing signals representing an angular position of a shaft of a motor , comprising: evaluate a rotation direction datum of the shaft;', 'store arrival times of the signals in memory locations of a memory (a) in a first sequence in the event of a rotation of the shaft in a first direction, and (b) in a second sequence opposite to the first sequence in the event of a rotation of the shaft in a second direction opposite to the first direction; and', 'use an arrival time stored most recently in the sequence and an arrival time stored previously in the sequence for a calculation, wherein a selection of the previously stored time is implemented by: (i) in the event of a rotation of the shaft in the first direction, a time required for the calculation is selected, proceeding from the time stored most recently in the first sequence, oppositely to the first sequence;, 'a storage device configured to 'wherein the storage device includes at least one address pointer which points to one of the memory location of the most recently stored time or the next free memory location, and wherein the first sequence occurs in the ease of the rotation of shaft in the first direction by incrementing the address pointer, and wherein the second sequence occurs in the case of the rotation of the shaft in the second direction by decrementing the address pointer ...

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Номер записи: 17
18-04-2013 дата публикации

Sensor readout with redundancy-checking

Номер: US20130093431A1
Автор: Johan Raman, Pieter Rombouts
Принадлежит: MELEXIS TECHNOLOGIES NV

A difference measurement circuit including a first port and a second port for connection to a first set of nodes and a second set of nodes of a sensor unit. The circuit further includes switching units for switching excitation signals emanating from excitation nodes from being applied to the first set of nodes via the first port to being applied to the second set of nodes via the second port and for switching differential measurement signals measured at sensing nodes from being obtained from the second set of nodes via the second port to being obtained from the first set of nodes via the first port. A corresponding method is described. The circuit further includes redundancy testing circuitry for evaluating the similarity or deviation between measurement signals obtained in different states of the switching units.

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Номер записи: 18
02-05-2013 дата публикации

Device for detecting the position of an actuator

Номер: US20130106405A1
Автор: Gernot Schmid, Manfred Bammer
Принадлежит: AIT AUSTRIAN INSTITUTE OF TECHNOLOGY GMBH, Seibersdorf Labor Gmbh

A device for detecting the position of an actuator has a conductor arrangement, which detects magnetic fluxes flowing therethrough and converts same into a voltage signal that is dependent on the position, at which the magnetic flux penetrates the conductor arrangement. The induced voltage signal is proportional to the position of the magnetic flux, measured along a predetermined axis starting from a predetermined starting point. A position-determining unit is connected to the conductor arrangement for determining the position of a magnetic flux generated by the actuator and passing though the conductor arrangement. A transmission unit, by way of which the determined position is transmitted to a receiver, is arranged downstream of the position-determining unit.

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Номер записи: 19
02-05-2013 дата публикации

MAGNETIC ENCODER WITH IMPROVED RESOLUTION

Номер: US20130106406A1
Автор: Misawa Yasushi, Sugita Satoshi, Tang Yuqi
Принадлежит: SANYO DENKI CO., LTD.

A low-cost magnetic encoder that facilitates generating sinusoidal magnetic flux is provided. First and second permanent magnet arrays each include a plurality of permanent magnets arranged such that magnetic poles having the same polarity face each other, and magnetic yokes disposed on side surfaces of the plurality of permanent magnets. The permanent magnets and the magnetic yokes are arranged side by side at a predetermined pitch in the moving direction of a magnetic piece array. First and second magnetic detectors corresponding to the first and second permanent magnet arrays are disposed in a positional relationship allowing detection of leakage magnetic flux generated when the permanent magnet arrays and the magnetic piece array are displaced with respect to each other. 1. A magnetic encoder comprising:a permanent magnet array including a plurality of permanent magnets arranged such that magnetic poles having the same polarity face each other, or arranged such that the magnetic poles having different polarities face each other through a non-magnetic member interposed therebetween;a magnetic piece array including a plurality of magnetic pieces spaced from each other along the permanent magnet array; anda magnetic detector configured to detect leakage magnetic flux generated when the permanent magnet array and the magnetic piece array are displaced with respect to each other, whereina pitch of the plurality of permanent magnets and a pitch of the plurality of magnetic pieces are determined to form a magnetic path in which magnetic flux emitted from one of the permanent magnets in the permanent magnet array passes through one of the magnetic pieces that faces the permanent magnet or the non-magnetic member adjacent to the one permanent magnet when the permanent magnet array and the magnetic piece array are continuously displaced with respect to each other.2. The magnetic encoder according to claim 1 , whereinwhen the pitch P of the magnetic pieces is defined as P= ...

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Номер записи: 20
02-05-2013 дата публикации

COMPACT 3D DIRECTION FINDER

Номер: US20130106407A1
Автор: ALMOG Benyamin
Принадлежит: ELTA SYSTEMS LTD.

An apparatus that includes two non-coinciding arrangements disposed in an two axes Cartesian coordinate system such that each arrangement having a non-zero projection on a respective axis from among the two axes. Each one of the arrangements includes a pair of oppositely directed, spaced apart, co-axial radiating-capable elements, each of the elements being hollow with internal space, and being slotted throughout its entire extent. A first circuitry coupled to the arrangement and being configured to sense an electric field projection along the axis and to convey it to a first feeding terminal. A second circuitry coupled to a slot of the arrangement and being configured to sense a magnetic field's projection along said axis and to convey it to a first feeding terminal. 1. An apparatus , comprising:at least two non-coinciding arrangements disposed in an at least two axes Cartesian coordinate system such that each arrangement having a non-zero projection on a respective axis from among said at least two axes; each one of said arrangements includes at least one pair of oppositely directed, spaced apart, co-axial radiating-capable elements, each of said elements being hollow with internal space, and being slotted throughout its entire extent; a first circuitry coupled to said arrangement and being configured to sense an electric field projection along said axis and to convey it to a first feeding terminal;a second circuitry coupled to at least one slot of said arrangement configured to sense a magnetic field's projection along said axis and to convey it to a first feeding terminal.2. The apparatus according to claim 1 , wherein each arrangement has a first longitudinal dimension and is capable of sensing a magnetic field projection along said axis and an electric field projection along said axis in a decade frequency band where the said first longitudinal dimension is smaller than λ/10 and where λcorresponds to the highest frequency of said frequency band.3. The antenna ...

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Номер записи: 21
09-05-2013 дата публикации

Differential pressure gauge

Номер: US20130112004A1
Автор: James H. Gammon
Принадлежит: Gammon Technical Products Inc

A sensor assembly including a flexible member having a first end and a second end, a rotating member connected to the second end of the flexible member, a positional element disposed on the rotating member, and a sensor capable of sensing a movement of the positional element. A movement of the second end of the flexible member allows the rotating member and the positional element to rotate.

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Номер записи: 22
09-05-2013 дата публикации

PORTABLE TERMINAL DEVICE AND POSITION DETECTION METHOD USED THEREIN

Номер: US20130113466A1
Автор: Hirayama Ryusuke
Принадлежит: FUJITSU LIMITED

A portable terminal device is disclosed that includes a movable part having a display part; an arm part supporting the movable part so that the movable part is rotatable at least ±90° with reference to a rotation center position around a rotation center; and a position detection part detecting the position of the movable part relative to the arm part. The position detection part includes magnets, magnetic sensors detecting the magnetic fields thereof, and a calculation part determining the position of the movable part based on sensor outputs. The magnets are provided in one of the arm part and the movable part so as to be 90° apart from each other around the rotation center. The magnetic sensors are provided in the other one of the arm part and the movable part so as to oppose the corresponding magnets when the movable part is positioned at the rotation center position. 1. A portable terminal device , comprising:a movable part having a display part;an arm part provided on a base part, the arm part being configured to support the movable part so that the movable part is rotatable in a rotation range of at least ±90° with reference to a rotation center position around a rotation center; anda position detection part configured to detect a rotational position of the movable part relative to the arm part,wherein the position detection part includes a pair of magnets, a single two-output magnetic sensor configured to detect magnetic fields of the magnets, and a calculation part configured to determine the rotational position of the movable part based on an output of the two-output magnetic sensor,the magnets are provided in a first one of the movable part and the arm part so that the magnets are 180° apart from each other around the rotation center and have respective magnetic fields in a same direction,the two-output magnetic sensor is provided in a second one of the movable part and the arm part, anda first one of the magnets opposes the two-output magnetic sensor in ...

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Номер записи: 23
09-05-2013 дата публикации

Angle Detection Apparatus

Номер: US20130113467A1
Автор: SASADA Ichiro
Принадлежит: Kyushu University, National University Corporation

Provided is an angle detection device capable of detecting the angle with high sensitivity by a very simple assembly process without requiring complicated processing. The angle detection device is provided with: a rotor () which is formed by a disk plate body produced from a magnetic substance having uniaxial magnetic anisotropy, the disk plate body rotating around a center point within the disk plate surface; a stator () which is provided to face the plate surface of the disk plate body of the rotor (), has approximately the same external shape as that of the rotor, and is divided into a plurality of fan-shaped regions, and in which an exciting coil or a detection coil is wound along the outer periphery of each of the divided regions. 1. An angle detection apparatus comprises:a rotor in which a disk member comprising a magnetic body has a magnetic permeability, which is generally uniaxially anisotropic, said disk member being rotatable around a central point in a plane of the disk member; anda stator comprising a plurality of coils, at least one of said coils being an exciting coil that generates a magnetic field, and at least one of said coils being a detection coil that intersects with the magnetic field excited by said exciting coil to detect a voltage corresponding to an angle of rotation of said rotor.2. The angle detection apparatus as claimed in claim 1 , wherein:said stator has substantially a same outer shape as the disk member of said rotor and is disposed in a vicinity of the disk member of said rotor so as to face the plane thereof, said stator being divided into a plurality of fan-shaped sections and said exciting coil and said detection coil being provided alternately on at least linear portion of the fan-shaped sections, respectively, on an outer periphery of said fan-shaped sections.3. The angle detection apparatus as claimed in claim 2 , further comprising:a back yoke that is provided on an opposite side to said rotor relative to said stator, said ...

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Номер записи: 24
09-05-2013 дата публикации

ROLLER BEARING ARRANGEMENT WITH AN ANGLE SENSOR

Номер: US20130113470A1
Автор: Kegeler Joerg, Weyh Juergen
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A roller bearing configuration having an angle sensor includes a roller bearing. The Angle sensor an absolute encoder with a sensor ring connected in a rotationally fixed manner to one of the bearing rings of the roller bearing, and a measuring element connected in a rotationally fixed manner to the second bearing ring, wherein coils, namely at least one transmitting coil and at least one receiving coil, are situated on the sensor ring, and the transmitting coil has an axis of symmetry, which is identical to the axis of rotation and is situated in an annular metallic pot core, which has a U-shaped cross section and is concentric with the axis of rotation of the roller bearing, and a receiving coil is situated partially inside and partially outside of the pot core. 122-. (canceled)23. A roller bearing configuration comprising:a roller bearing having a first bearing ring and a second bearing ring concentric with an axis of rotation, the first and second bearing rings including an inner bearing ring and outer bearing ring, the roller bearing including rolling elements situated between the inner and outer bearing rings; andan angle sensor coupled to the roller bearing for detection of an angular position of the first bearing ring in relation to the second bearing ring, the angle sensor including a sensor ring connected to the first and second bearing rings and a measuring element connected to the second bearing ring in a rotationally fixed manner, at least one transmitting coil and at least one receiving coil situated on the sensor ring, a signal being transmissible between the transmitting coil and the receiving coil via a magnetic circuit and a variable reluctance existing in the magnetic circuit due to the measuring element, the transmitting coil surrounding the axis of rotation and situated in a pot core having a U-shaped cross section, being concentric with the axis of rotation, being connected to one of the first and second bearing rings and forming a part of the ...

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Номер записи: 25
23-05-2013 дата публикации

Variable reluctance resolver

Номер: US20130127451A1
Автор: Gyu-ryong Choi, Hong-Chan Eom, In-sub Shin, Yeong-sik Kim
Принадлежит: Daesung Electric Co Ltd

The present invention relates to a resolver of an electric driving motor for vehicle which comprises a rotor, a stator comprising a stator main body which encircles the rotor and teeth which extend from the stator main body to be wound by a coil, a terminal module comprising a terminal end which contacts the coil for an electric connection and a terminal main body which supports the terminal end, and a connector module comprising a connector main body which is detachably coupled to the terminal main body and a lead line which is connected to an outer device and supported by the connector main body and which contacts the terminal end for an electric connection if the connector main body is coupled to the terminal main body, thus simplifying manufacturing process and repairing process and reducing cost.

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Номер записи: 26
06-06-2013 дата публикации

Magnetic Inductive Type Position Sensor

Номер: US20130141083A1
Автор: Changhwan Lee
Принадлежит: LG Innotek Co Ltd

Disclosed is a magnetic inductive type position sensor, the position sensor including at least one rotor body coupled to a rotation shaft to rotate in association with rotation of the rotation shaft and having a plurality of protrusively and circumferentially formed wing members, a PCB arranged in opposition to the rotor body, and a guide member connecting each distal end of the wing members to guide each of the wing members to be aligned on the same planar surface.

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Номер записи: 27
06-06-2013 дата публикации

MAGNETIC ENCODER HAVING THIN DETECTION SURFACE

Номер: US20130141087A1
Автор: KARIYA Isao, ODAKA Shunichi
Принадлежит: FANUC Corporation

A magnetic encoder including an object to be detected, a casing opposite to the object, a magnet and a magnetic sensor accommodated in the casing is provided. The casing of the magnetic encoder has an opposite wall opposite to the object. The opposite wall has a thickened portion and a thin portion integrally formed with the thickened portion. The thin portion has a smaller thickness than the thickened portion. The magnetic sensor is situated at the thin portion. 1. A magnetic encoder comprising:an object to be detected made of a magnetic material and capable of rotating about a rotational axis;a casing made of a non-magnetic material and spaced apart from the object in a direction perpendicular to the rotational axis;a magnet accommodated in the casing for generating a magnetic field; anda magnetic sensor for detecting changes in a magnetic field corresponding to rotational movement of the object, the magnetic sensor being accommodated in the casing and situated between the magnet and the object, whereinan opposite wall of the casing opposite to the object has a thickened portion and a thin portion integrally formed with the thickened portion, the thin portion having a smaller thickness than the thickened portion, the magnetic sensor being situated at the thin portion.2. The magnetic encoder according to claim 1 , wherein the thin portion of the opposite wall of the casing is formed by machine-cutting.3. The magnetic encoder according to claim 1 , wherein the opposite wall of the casing has a transition portion between the thickened portion and the thin portion claim 1 , the transition portion having a thickness which continuously changes between the thickened portion and the thin portion.4. The magnetic encoder according to claim 3 , wherein the transition portion has a thickness which linearly changes between the thickened portion and the thin portion.5. The magnetic encoder according to claim 3 , wherein the transition portion has a thickness which changes in a ...

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Номер записи: 28
13-06-2013 дата публикации

Linear position sensor

Номер: US20130147468A1
Автор: Robert Newman, William Storrie
Принадлежит: Individual

A sensor used to sense the position of an attached movable object. The sensor can be mounted to a pneumatic actuator. The sensor includes a housing that has a pair of cavities or pockets separated by a wall. A magnet carrier is positioned within one of the cavities and a magnet is coupled to the magnet carrier. The magnet carrier is coupled to the moveable object. A magnetic sensor is positioned in the other of the cavities. The magnetic sensor generates an electrical signal that is indicative of a position of the movable object.

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Номер записи: 29
13-06-2013 дата публикации

ROTATION ANGLE DETECTION DEVICE

Номер: US20130147469A1
Автор: NODA HIROMITSU, SHIRAGA SHOZOH
Принадлежит: Panasonic Corporation

The present invention relates to a rotation angle detection device mainly used for rotation angle detection of a steering wheel of an automobile and the like. 1. A rotation angle detection device , comprising:a rotation body rotated in conjunction with a steering;a first detection body rotated in conjunction with the rotation body;a cuboid first magnet installed in a first accommodation portion which is provided in a center of the first detection body;a first magnetism detection element arranged so as to face the first magnet; andcontrol means for detecting a rotation angle of the rotation body by a detection signal from the first magnetism detection element, whereinthe first accommodation portion includes a first support portion for supporting one surface of the first magnet, and a first retention portion for retaining the other surface facing the one surface of the first magnet.2. The rotation angle detection device according to claim 1 , wherein the first magnet is turned in the first accommodation portion and press-fitted between the first support portion and the first retention portion.3. The rotation angle detection device according to claim 1 , wherein the first retention portion retains both longitudinal ends of the other surface of the first magnet.4. The rotation angle detection device according to claim 3 , wherein the first retention portion retains the first magnet by a first inner inclination portion inclined relative to the other surface of the first magnet.5. The rotation angle detection device according to claim 1 , wherein the first detection body is made of synthetic resin.6. The rotation angle detection device according to claim 5 , wherein the synthetic resin includes polyoxymethylene.7. The rotation angle detection device according to claim 1 , further comprising:a second detection body rotated in conjunction with the first detection body or the rotation body;a cuboid second magnet installed in a second accommodation portion which is provided ...

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Номер записи: 30
13-06-2013 дата публикации

SYSTEM AND METHOD FOR COMPENSATING ORIENTATION OF A PORTABLE DEVICE

Номер: US20130151195A1
Автор: Marinoni Alberto
Принадлежит: STMICROELECTRONICS S.R.L.

A system for compensating orientation of a portable device is provided with a processing unit for: determining a roll rotation angle of the portable device in a mobile reference system associated thereto; and applying a rotation matrix, which is a function of the roll rotation angle, for transforming relative displacements of the mobile device in the mobile reference system into corresponding displacements in a fixed reference system, of an inertial type, thus compensating the orientation of the portable device. The processing unit determines the roll rotation angle, in the presence of dynamic acceleration, by means of: acquisition of a roll angular velocity of the portable device by a gyroscopic sensor fixed with respect thereto; and time integration of the same roll angular velocity. 1. A system comprising:a portable device; perform a first processing operation for determining in a first operating condition a roll rotation angle of the portable device, the first processing operation including acquiring a roll angular velocity of the portable device and determining the roll rotation angle by performing a time integration of the roll angular velocity; and', 'apply a rotation matrix that is a function of the roll rotation angle, the rotation matrix being configured to transform relative displacements of the portable device in a mobile reference system into corresponding displacements in a fixed reference system, of an inertial type, the corresponding inertial displacements being independent of the orientation of the portable device., 'a processing unit fixed to the portable device, the processing unit configured to2. The system according to claim 1 , comprising a gyroscopic sensor fixed with respect to the portable device and configured to detect the roll angular velocity of the portable device and provide a signal indicative of the roll angular velocity to the processing unit.3. The system according to claim 2 , wherein the gyroscopic sensor is a MEMS triaxial ...

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Номер записи: 31
20-06-2013 дата публикации

POSITION DETECTOR DEVICE

Номер: US20130154623A1
Автор: Iwahashi Masaru
Принадлежит: NIPPON SEIKI CO., LTD.

Provided is a position detector device capable of suppressing the effect of external magnetic fields on precision in detection. A position detector device () comprises: a subject to be detected (), which rotates along with the rotation of a handle grip () that is disposed on a handlebar (); a detector unit () that detects the subject to be detected (); and a case () which houses the subject to be detected () and the detector (). The subject to be detected () is treated as a magnetic cylindrical body, the detector unit () is treated as a magnetic detector unit () that detects changes in magnetism. A support member () rotatably supports the subject to be detected (), and further comprises a housing member () that houses the detector unit () on the interior circumference side of the subject to be detected (). 1. A position detector device comprising:a subject to be detected, which rotates with the rotation of a handle grip disposed in a handlebar;a detector unit which detects the subject to be detected; anda case which houses the subject to be detected and the detector unit,wherein:the subject to be detected is formed as a magnetic cylindrical body;the detector unit is formed as a magnetic detector unit which detects a change in magnetism; anda support member which rotatably supports the subject to be detected and includes a housing member in which the detector unit is disposed is provided in an inner circumference side of the subject to be detected.2. The position detector device according to claim 1 , wherein the detector unit is formed by a magnetic detector element which is surface-mounted on a circuit board.3. The position detector device according to claim 1 , wherein the subject to be detected is held by a holder member and the holder member is rotatably disposed in the support member.4. The position detector device according to claim 3 , wherein the subject to be detected is formed by a magnet and is cylindrical in shape. The present invention relates to a ...

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Номер записи: 32
20-06-2013 дата публикации

ROTARY ACTUATOR

Номер: US20130154627A1
Автор: Pfenning Klaus
Принадлежит: Continental Automotive GmbH

A rotary actuator has a handle, rotatable about an axis of rotation, and a position sensor system for detecting the rotary position of the handle. The rotary actuator has an actuating segment is made of an electrically conductive material and, forming a capacitor, is opposite a sensor segment of a stationary segment ring, which is concentric with respect to the axis of rotation 3 and consists of a plurality of sensor segments. The sensor segments include an electrically conductive material and are axially spaced apart by an air gap. A sensor line leads from each sensor segment to evaluation electronics. 110-. (canceled)11. A rotary actuator , comprising:a handle rotatable about an axis of rotation;a position sensor system for detecting a rotary position of the handle;an actuating segment located at an end of the handle facing away from an operating side of the handle and at a radial distance from the axis of rotation, the end of the handle including an electrically non-conductive material, wherein the actuating segment includes a first electrically conductive material and forms a capacitor; the actuating segment is located opposite the sensor segments,', 'the sensor segments are spaced apart from one another in a circumferential direction and are made of a second electrically conductive material, and the sensor segments are spaced apart from the handle by an air gap; and', 'a respective sensor line leading from each sensor segment to evaluation electronics., 'a stationary segment ring including a plurality of sensor segments uniformly distributed on a periphery of the segment ring and being concentric with respect to the axis of rotation, wherein12. The rotary actuator as claimed in claim 11 , wherein the handle includes a marking in an end region of an end on the operating side of the handle.13. The rotary actuator as claimed in claim 11 , wherein:the handle includes a plastic part, and the actuating segment includes a conductive plastic.14. The rotary actuator as ...

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Номер записи: 33
27-06-2013 дата публикации

ENCODER DEVICE FOR USING A MAGNETIC SENSOR ARRANGEMENT AND BEARING UNIT COMPRISING THE SAME

Номер: US20130160669A1
Автор: Le Moigne Thierry, TURMEAU Arnaud
Принадлежит: AKTIEBOLAGET SKF

An encoder device for use in a magnetic sensor arrangement, comprising: a metallic ring having a set of clearances in a ferromagnetic material, wherein said clearances are arranged around a circumference of the metallic ring, wherein the metallic ring is configured to generate an oscillating magnetic induction in a nearby magnetic sensor upon rotation of the metallic ring, wherein the metallic ring is made of at least one flat and strip-like sheet metal material, two ends of which are joined to form a loop. 1. An encoder device for use in a magnetic sensor arrangement , the encoder device comprising:a metallic ring having a set of clearances in a ferromagnetic material, whereinthe clearances are arranged around a circumference of the metallic ring, whereinthe metallic ring is configured to generate an oscillating magnetic induction in a nearby magnetic sensor upon rotation of the metallic ring, and whereinthe metallic ring is made of at least one flat and strip-like sheet metal material, two ends of which are joined to form a loop.2. The encoder device according to claim 1 , wherein the encoder device further comprises means for connecting the end portions of the strip-like sheet metal material in a connecting portion of the metallic ring.3. The encoder device according to claim 2 , wherein the end portions of the strip-like like sheet metal material are overlapping in the connecting portion of the metallic ring.4. The encoder device according to claim 2 , wherein the end portions of the strip-like like sheet metal material are bent radially inward and clamped by a clamping slit in a connecting portion of the encoder device.5. The encoder device according to claim 1 , wherein the metallic ring provides holes for bolting the metallic ring onto a support ring.6. The encoder device according to claim 1 , further comprising a support ring with an essentially cylindrical outer surface claim 1 , wherein the strip-like metal material forming the metal ring is wound around ...

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Номер записи: 34
27-06-2013 дата публикации

VARIABLE RELUCTANCE RESOLVER

Номер: US20130162243A1
Автор: OCHIAI Takaaki, SHIRAYANAGI Shuumei
Принадлежит: MINEBEA CO., LTD.

A variable reluctance resolver has a stator combined with a housing. The resolver does not require extra space in a case for a device, into which the resolver is mounted, and it is easily coaxially mounted to the device. The resolver includes a ring-like stator a rotor and a housing The stator has a stator core a first insulator a second insulator and coils The stator core is provided with plural salient poles The first insulator and the second insulator hold the stator core therebetween from both sides of the stator core The coils are wound to the salient poles via the first insulator and the second insulator The housing accommodates the stator The first insulator is coaxially integrally formed with the housing 1. A variable reluctance resolver comprising:a ring-like stator including a stator core, a first insulator, a second insulator, and coils, the stator core being provided with plural salient poles, the first insulator and the second insulator holding the stator core therebetween from both sides of the stator core, and the coils being wound to the salient poles of the stator core via the first insulator and the second insulator;a rotor being arranged inside the stator; anda housing accommodating the stator and being used for inserting the stator into a tubular case,wherein the first insulator is coaxially integrally formed at the housing.2. The variable reluctance resolver according to claim 1 , wherein the first insulator and the second insulator have a surface that face each other claim 1 , one of the surfaces of the first insulator and the second insulator is formed with a boss portion claim 1 , and the other surface is formed with a connecting hole for fitting with the boss portion claim 1 , and the first insulator and the second insulator are connected by fitting the boss portion into the connecting hole.3. The variable reluctance resolver according to claim 1 , wherein the housing is formed with a positioning means for setting an angular position of the ...

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Номер записи: 35
27-06-2013 дата публикации

DLA ROTOR FLUX DESNITY SCAN METHOD AND TOOL

Номер: US20130162244A1
Автор: Rasokas Raymond, Weldon Craig Andrew
Принадлежит: CONTINENTAL AUTOMOTIVE SYSTEMS, INC.

A method of measuring flux density and run out to accommodate rotors of different diameters, evaluate intrinsic properties of magnet material and the magnetization process. Circular run out measurement capability is also used to evaluate bearing journal “ovality.” The method includes the use of a scan tool, or a DLA Rotor Flux Density Scan Fixture, which evaluates the electromagnetic field strength (gauss), combined with surface run out and presents the data in a scalable pictorial format. The scan tool includes a probe which measures a magnetic field strength and circular run out of the perimeter of the magnet. Simultaneously, a non-contact measurement sensor is used to measure the rotor surface for subtle variations. The resulting sine wave gauss data and the surface dimension data are manipulated into a scalable “radar” plot. The radar plot correlates magnetic pole field strength and surface circular run out variation to the index position. 1. A method for measuring the magnetic flux and run out of a surface , comprising the steps of:providing a digital linear actuator (DLA);providing a rotor, the rotor being part of the DLA;providing a magnet connected to and circumscribing the rotor, the magnet having an outer surface;providing a plot having the magnet flux density of the magnet, and the run out of the magnet;simultaneously measuring the run out and the magnet flux density of the rotor; andplotting the run out and the magnet flux density are together on the plot to correlate the measurements of the run out and the magnet flux density.2. The method for measuring the magnetic flux and run out of a surface of claim 1 , further comprising the steps of:providing a first section of the outer surface;providing a second section of the outer surface;providing a non-contact measurement sensor for measuring the run out on the first section of the outer surface of the magnet, and for measuring the run out on the second section of the outer surface of the magnet;providing a ...

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Номер записи: 36
27-06-2013 дата публикации

INCREMENTAL CAPACITIVE ANGULAR DISPLACEMENT TRANSDUCER

Номер: US20130162272A1
Автор: GNEVANOV Vladimir Ivanovich, RASSOMAGIN Vasiliy Radionovich
Принадлежит:

Incremental angular capacitive displacement transducer comprising movable () and fixed () dielectric plates, sections of electrode (), jointed by means of inter-section electrical connections and situated on side of fixed () dielectric plate facing movable () dielectric plate, sections of two electrodes () located on side of movable () dielectric plate facing fixed () dielectric plate, and signal conversion unit (). 1. An incremental capacitive angular displacement transducer comprising:a movable dielectric plate;a stationary dielectric plate;electrode sections jointed by inter-section electrical connections and positioned on a side of the stationary dielectric plate facing the movable dielectric plate;sections of two electrodes located on a side of the movable dielectric plate facing the stationary dielectric plate; anda signal conversion unit;wherein the movable plate is a disc and the stationary plate is a disc;and further comprising a first group of three oscillating circuits and a second group of three oscillating circuits, each oscillating circuit comprising its respective inductance coil, galvanically isolated from the signal conversion unit;wherein the electrode sections forming two electrodes in each of three oscillating circuits of the first group are positioned circumferentially on the side of the stationary disc facing the movable disc to form a first circumference;wherein the electrode sections forming two electrodes in each of three oscillating circuits of the second group are positioned circumferentially on the side of the stationary disc facing the movable disc to form a circumference inside the first circumference;wherein the electrode sections of a common electrode of the three oscillating circuits of the first group are positioned circumferentially on the side of the movable disc facing the stationary disc to form a second circumference opposite the electrode sections of the six electrodes of the three oscillating circuits of the first group on ...

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Номер записи: 37
11-07-2013 дата публикации

MEASURING ROTATION AND TILT OF A WHEEL ON AN INPUT DEVICE

Номер: US20130176020A1
Автор: Chauvin Nicolas, Theytaz Olivier
Принадлежит: Logitech Europe S.A.

Embodiments of the present invention include a roller for an input device, where the roller's absolute angular position is measured by a magnetic encoder. A magnet is attached to the roller, possibly inside the roller so as to make the embodiment more compact. In one embodiment, the magnetization is simple and low cost. Further, tight tolerances are not required, and such a system is easy to manufacture. In one embodiment, the sensor is covered by any non-ferromagnetic material, to protect it from foreign particles, and to reduce ESD. In one embodiment, the wheel consumes much less power than conventional wheels in input devices. In one embodiment, the tilting of the wheel is measured using the same sensor that is used for measuring the rotation of the wheel. In one embodiment, a ratcheting feel provided to the user when rotating the wheel is synchronized with the rotation signal. 1. A wheel assembly for use in an input device , the wheel assembly comprising:a wheel;a magnet coupled to the wheel, wherein the coupling is such that the magnet rotates with the wheel; anda magnetic sensor configured to measure an absolute position and a tilt of the magnet, wherein the sensor provides signals triggered by rotation of the wheel, an amplitude of the signals corresponding to the tilt of the magnet, and a phase of the signals corresponding to the absolute position of the magnet.2. The wheel assembly of claim 1 , wherein the magnet is a permanent magnet.3. The wheel assembly of claim 1 , wherein the magnet is diametrically magnetized dual pole magnet.4. The wheel assembly of claim 1 , wherein the magnet is placed within the wheel.5. The wheel assembly of claim 1 , wherein the magnet is placed on a first side of the wheel claim 1 , and the sensor is placed on the first side of the wheel.6. (canceled)7. The wheel assembly of claim 1 , wherein the sensor provides signals triggered by rotation of the wheel to a host to which the input device is communicatively coupled.8. ( ...

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Номер записи: 38
25-07-2013 дата публикации

INDUCTIVE DETECTION TYPE ROTARY ENCODER

Номер: US20130187639A1
Автор: SASAKI Kouji
Принадлежит: MITUTOYO CORPORATION

A first reception wiring and a first magnetic flux coupler form a first track having a shape periodically changing in a rotation direction of the rotor at a first pitch. A second reception wiring and a second magnetic flux coupler form a second track having a shape periodically changing in a rotation direction of the rotor at a second pitch. The first reception wiring and the second reception wiring are stacked via a first insulative layer in a direction in which a rotation shaft extends. The first magnetic flux coupler and the second magnetic flux coupler are stacked via a second insulative layer in a direction in which the rotation shaft extends. 1. An inductive detection type rotary encoder comprising:a stator;a rotor which is rotatable about a rotation shaft and is arranged opposite to the stator;a transmission wiring which is annularly formed on the stator about the rotation shaft;a first reception wiring and a second reception wiring which are annularly formed on the stator along the transmission wiring about the rotation shaft; anda first magnetic flux coupler and a second magnetic flux coupler which are annularly formed on the rotor about the rotation shaft and are directed for magnetic-flux coupling with the transmission wiring, the first reception wiring and the second reception wiring,the first reception wiring and the first magnetic flux coupler forming a first track having a shape periodically changing in a rotation direction of the rotor at a first pitch,the second reception wiring and the second magnetic flux coupler forming a second track having a shape periodically changing in a rotation direction of the rotor at a second pitch different from the first pitch,the first reception wiring and the second reception wiring being stacked via a first insulative layer in a direction in which the rotation shaft extends, andthe first magnetic flux coupler and the second magnetic flux coupler being stacked via a second insulative layer in a direction in which ...

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Номер записи: 39
25-07-2013 дата публикации

MULTIPOLAR ENCODER FOR POSITION SENSORS, AND DETECTION DEVICE INCLUDING SUCH AN ENCODER COMBINED WITH AT LEAST ONE POSITION SENSOR

Номер: US20130187640A1
Автор: Corona Jérôme
Принадлежит: ELECTRICFIL AUTOMOTIVE

A position sensor coder of the type comprising a multipolar magnetic annulus () provided at its circumference with poles having polarities of opposite signs, the coder including at least one mark zone (Pi) presenting an angular width (Li) greater than the angular width of each of the alternating poles situated outside said zone around the circumference of the annulus, the coder being characterized in that said mark zone (Pi) comprises two adjacent singular poles (Ni, Si) presenting polarities of opposite signs and placed in the continuity of pole alternation in the annulus () and of angular width that is greater than the angular width of the poles lying outside the mark zone, the magnetization within the singular poles varying gradually in continuous manner between the two ends of the mark zone. 1232. A position sensor coder of the type comprising a multipolar magnetic annulus () provided at its circumference with poles having polarities of opposite signs that are placed in alternating manner and that are designed to travel past a measurement cell () that delivers a differential periodic signal corresponding to the variation in the intensity of the magnetic field delivered by the poles , the coder including at least one mark zone (Pi) presenting an angular width (Li) greater than the angular width of each of the alternating poles situated outside said zone around the circumference of the annulus , the coder being characterized in that said mark zone (Pi) comprises two adjacent singular poles (Ni , Si) presenting polarities of opposite signs and placed in the continuity of pole alternation in the annulus () and of angular width that is greater than the angular width of the poles lying outside the mark zone , the magnetization within the singular poles varying gradually in continuous manner between the two ends of the mark zone.2. A position sensor coder according to claim 1 , characterized in that the junction between the two singular poles (Ni claim 1 , Si) is ...

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Номер записи: 40
01-08-2013 дата публикации

RESOLVER

Номер: US20130193957A1
Автор: Zhou Dawei
Принадлежит: AMETEK AIRTECHNOLOGY GROUP LIMITED

A brushless axial flux electromagnetic resolver comprising a stator carrying output and excitation windings and an inductive rotor having two substantially annular members arranged substantially perpendicular to the axis of rotation of the rotor, wherein each of the annular members has a lobe which is helically skewed along the rotor and wherein the lobes of the annular members are angularly offset from one another to provide a discontinuity in the helical skew between the annular members. 1. A brushless axial flux electromagnetic resolver comprising:a stator carrying output and excitation windings; andan inductive rotor having two substantially annular members arranged substantially perpendicular to the axis of rotation of the rotor,wherein each of the annular members has a lobe which is helically skewed along the rotor and wherein the lobes of the annular members are angularly offset from one another to provide a discontinuity in the helical skew between the annular members.2. The resolver of claim 1 , in which the lobe extends along an arc of the outer circumference of the annular member between first and second ends wherein the first and second ends extend axially along the rotor aligned in a substantially axial direction.3. The resolver of claim 2 , in which the transverse cross section of the lobe is arch shaped and bounded at the first and second ends by straight substantially parallel lines.4. The resolver of claim 3 , further comprising a feature of the lobe selected from the list consisting of:the corners of the transverse cross section of the lobe being bevelled or rounded;the lobe being skewed across the outer surface of the annular member;the ends of the lobes being tapered to reduce discontinuities in the radial extent of the rotor;the lobe extending along an arc of the outer circumference of the annular member between first and second lobe ends wherein the first and second lobe ends extend axially and circumferentially along the rotor; andthe lobe ...

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Номер записи: 41
08-08-2013 дата публикации

ROTATION-ANGLE DETECTION DEVICE

Номер: US20130200885A1
Автор: Asano Takumi, Hasegawa Noriyasu, Musha Takeshi, Nishizawa Hiroshi, Okamuro Takashi
Принадлежит: Mitsubishi Electric Corporation

A detection track includes a first detection element group that includes a plurality of first magnetic resistance elements arranged at a pitch λ/(2n) when an order to cancel target harmonic components among a plurality of harmonic components superimposed on a fundamental component of a detection signal for multi-pole magnetic pattern is assumed as n, and a second detection element group that includes a plurality of second magnetic resistance elements arranged at the pitch λ/(2n), a plurality of first dummy magnetic resistance elements arranged among the first magnetic resistance elements, and a plurality of second dummy magnetic resistance elements arranged among the second magnetic resistance elements. Pitches between adjacent magnetic resistance elements among the first magnetic resistance elements and the first dummy magnetic resistance element are equivalent to one another, and pitches between adjacent magnetic resistance elements among the second magnetic resistance elements and the second dummy magnetic resistance element are equivalent to one another. 17-. (canceled)8. A rotation-angle detection device for detecting a rotation angle of a rotary drum having a multi-pole magnetic pattern at a magnetization pitch λon an outer circumference , the rotation-angle detection device comprising a detection track that detects the multi-pole magnetic pattern , whereinthe detection track includes{'b': '2', 'sub': 1', 'k', '1', 'k, 'a first detection element group that includes a plurality of first magnetic resistance elements, when k is an integer equivalent to or larger than and orders of the target harmonic components to cancel among a plurality of harmonic components superimposed on a fundamental component of a detection signal for the multi-pole magnetic pattern are assumed as n=n, . . . , and n, respectively, the first magnetic resistance elements being arranged at a pitch λ/(2n) for each of orders n=n, . . . , and nto cancel target harmonic components, and'}a ...

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Номер записи: 42
08-08-2013 дата публикации

SENSING MAGNET APPARATUS FOR MOTOR

Номер: US20130200888A1
Автор: CHANG Dong Geun, Kim Jung Keun
Принадлежит: LG INNOTEK CO., LTD.

Disclosed is a sensing magnet apparatus for an motor, the apparatus including a disk-shaped plate centrally inserted by a rotation shaft, a ring-shaped sensing magnet so installed as to surface-contact an upper surface of the plate, formed at a position near to a periphery with a main magnet, and formed at a position near to a through hole with a sub magnet, and a separation inhibition unit physically coupling the plate and the sensing magnet to maintain the coupled state between the plate and the sensing magnet. 1. A sensing magnet apparatus for a motor , the apparatus comprising:a disk-shaped plate centrally inserted by a rotation shaft;a ring-shaped sensing magnet so installed as to surface-contact an upper surface of the plate, formed at a position near to a periphery with a main magnet, and formed at a position near to a through hole with a sub magnet; anda separation inhibition unit physically coupling the plate and the sensing magnet to maintain the coupled state between the plate and the sensing magnet.2. The sensing magnet apparatus of claim 1 , wherein the separation inhibition unit is provided in an insert molded sensing magnet wrapping both a front surface and a rear surface of the plate claim 1 , and the plate surface-contacts the sensing magnet at both the front and rear surfaces.3. The sensing magnet apparatus of claim 1 , wherein the separation inhibition unit includes a first grip unit complementarily formed with the plate and the sensing magnet claim 1 , and a second grip unit formed at an opposite side of the first grip unit claim 1 , where the first and second grip units are complementarily installed on the plate and the sensing magnet to physically grip the plate and the sensing magnet.4. The sensing magnet apparatus of claim 3 , wherein the first grip unit includes a grip rib extensively formed at a peripheral side of the plate claim 3 , bent to a direction facing the sensing magnet and formed thereinside with an accommodation groove unit; and ...

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Номер записи: 43
15-08-2013 дата публикации

METHOD AND DEVICE FOR THE SENSOR-FREE POSITION DETERMINATION OF AN ELECTRONICALLY COMMUTATED ELECTRIC MACHINE

Номер: US20130207647A1
Автор: Fricker David, Reiss Alexander
Принадлежит: ROBERT BOSCH GMBH

The invention relates to a method for determining a rotor position of a rotatory, multi-phase, electronically commutated electric machine (). Said electric machine () comprises several phase windings () which can be supplied with current by means of phase connectors. Said method consists of the following steps: phase currents and phase connections are identified on phase connections of the electric machine (); the induced currents on the phase connections of the electric machine () are determined from the identified phase currents and phase flows; the identified current indicator of the induced current is provided with respect to a Cartesian coordination system which is fixed to a stator by the induced currents; the position of the rotor is identified as a space indicator angle of the current indicator of the induced current provided with respect to the Cartesian coordination system which is fixed to the stator. 1114. A method for ascertaining an armature position of a rotary , polyphase , electronically commutated electric machine () , wherein the electric machine () has a plurality of phase windings () , which can be energized via phase connections , said method comprising the following steps:{'b': '1', 'determining phase voltages and phase currents at phase connections of the electric machine ();'}{'b': '1', 'ascertaining the induced voltages at the phase connections of the electric machine () from the determined phase voltages and phase currents;'}providing the voltage vector of the induced voltage with respect to a stator-fixed Cartesian coordinate system, said voltage vector being determined by the induced voltages;determining the armature position as a space vector angle of the voltage vector of the induced voltage, which voltage vector is provided with respect to the stator-fixed Cartesian coordinate system.2. The method as claimed in claim 1 , wherein the provision of the voltage vector of the induced voltage with respect to the stator-fixed Cartesian ...

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Номер записи: 44
15-08-2013 дата публикации

METHOD FOR OPERATING A CAPACITIVE POSITION SENSOR AND CAPACITIVE POSITION SENSOR

Номер: US20130207675A1
Автор: FRANCESCON Massimo
Принадлежит: SICK STEGMANN GMBH

A method for operating a capacitive position sensor includes providing excitation signals driving each conductive element. The excitation signals are periodic in 2π, with each set of conductive elements being provided with n different excitation signals. The different excitation signals differ in phase, wherein in a functionality check mode, the excitation signal that in a measurement mode is applied to one of the conductive elements in the functionality check mode is applied to a different one of the conductive elements. The different conductive element is the k-th conductive element counted from the one of the conductive elements, with k being an integer of 1 to n−1 and this shift of excitation signals is applied to all conductive elements. The capacitive position sensor includes a stator having a transmitter with N sets of conductive elements, each set having n conductive elements formed in a linear or circular arrangement thereon. 1. Method for operating a capacitive position sensor , the capacitive position sensor comprisinga stator, the stator comprising a transmitter and a receiver, the transmitter comprising N sets of conductive elements, each set comprising n conductive elements, the conductive elements of the transmitter formed in a linear or circular arrangement thereon,the receiver comprising a conductive plate formed thereon,a rotor, the rotor comprising a linear or circumferential modulated geometry, the stator and the rotor being arranged parallel to each other and being rotatable independently, the method comprising the step of providing each conductive element with an excitation signal, the excitation signals being periodic in 2π, each set of conductive elements being provided with n different excitation signals, the different excitation signals differing in phase, characterized in that in a functionality check mode the excitation signal that in a measurement mode is applied to one of the conductive elements in the functionality check mode is ...

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Номер записи: 45
22-08-2013 дата публикации

EXTENDED RANGE POSITION SENSOR SYSTEM

Номер: US20130214766A1
Автор: Benton John, Furlong Gregory
Принадлежит: HONEYWELL INTERNATIONAL INC.

An extended range position sensor system includes a first set of spaced-apart magnets, a first sensor, a second set of spaced-apart magnets, a second sensor, and a processor. The first sensor is associated with and is movable relative to the first set of magnets, and is configured to generate a first sensor output signal in response to relative movement between the first sensor and the first set of magnets. The second sensor is associated with and is movable relative to the second set of magnets, and is configured to generate a second sensor output signal in response to relative movement between the second sensor and the second set of magnets. The processor is coupled to receive the first and second sensor output signals and is configured, in response thereto, to generate a position signal. 1. A position sensor system , comprising:a first set of magnets, each magnet in the first set of magnets spaced apart from at least one other magnet in the first set of magnets by a first linear distance;a first sensor associated with and movable relative to the first set of magnets, the first sensor configured to generate a first sensor output signal in response to relative movement between the first sensor and the first set of magnets;a second set of magnets, each magnet in the second set of magnets spaced apart from at least one other magnet in the second set of magnets by a second linear distance, the second linear distance unequal to the first linear distance;a second sensor associated with and movable relative to the second set of magnets, the second sensor configured to generate a second sensor output signal in response to relative movement between the second sensor and the second set of magnets; anda processor coupled to receive the first and second sensor output signals and configured, in response thereto, to generate a position signal.2. The system of claim 1 , wherein the processor is configured to:determine a difference between the first and second sensor output ...

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Номер записи: 46
22-08-2013 дата публикации

ROTATION CONTROL APPARATUS AND METHOD AND DISK DRIVING APPARATUS USING THE SAME

Номер: US20130215728A1
Автор: Kunida Yuji, Maeda Norihiro
Принадлежит: ROHM CO., LTD.

A rotation control apparatus includes: a controller configured to supply test currents to a plurality of different paths of a motor when the motor is stopped; and a stop position detector configured to detect a rotational position of the motor based on an order of current values of the test currents. The controller causes one of the test currents to flow through one of the plurality of different paths, measure time taken until the corresponding detection voltage reaches a reference voltage, and set electrical conduction time of the test currents based on a result of the measurement. 1. A rotation control apparatus comprising:a controller configured to supply test currents to a plurality of different paths of a motor including a stator having a plurality of coils and a magnetic rotor when the motor is stopped, the plurality of different paths including the plurality of coils; anda stop position detector configured to convert the test currents flowing through the plurality of paths into detection voltages for measurement, compare voltage values of the detection voltages, determine an order of current values of the test currents based on the comparison, and detect a rotational position of the motor based on the order,wherein the controller is further configured to cause one of the test currents to flow through one of the plurality of different paths, measure time taken until the corresponding detection voltage reaches a reference voltage, and set an electrical conduction time of the test currents based on a result of the measurement.2. The rotation control apparatus of claim 1 , wherein the stop position detector includes an amplifier configured to generate the detection voltage claim 1 , and the reference voltage is set to a median value or its neighborhood value of an output range of the amplifier.3. The rotation control apparatus of claim 2 , wherein input/output characteristics of the amplifier are changeable.4. The rotation control apparatus of claim 1 , wherein ...

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Номер записи: 47
22-08-2013 дата публикации

Rotation Angle Sensor for Absolute Rotation Angle Determination Even Upon Multiple Revolutions

Номер: US20130218517A1
Автор: Udo Ausserlechner
Принадлежит: INFINEON TECHNOLOGIES AG

A rotation angle sensor for detecting an absolute rotation angle upon single or multiple revolutions includes a magnetic field sensor and an encoder arrangement. The magnetic field sensor detects at least two orthogonal magnetic field variables. The encoder arrangement is rotatable depending on the absolute rotation angle relative to the magnetic field sensor, such that the magnetic field detected by the magnetic field sensor is dependent on a relative angular position of the encoder arrangement with respect to the magnetic field sensor. The encoder arrangement is furthermore displaceable relative to the magnetic field sensor. The relative angular position and the relative translational position of the encoder arrangement with respect to the magnetic field sensor is determined from the at least two orthogonal magnetic field variables. The absolute rotation angle is determined by means of the relative angular position and the relative translational position.

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Номер записи: 48
29-08-2013 дата публикации

ROTATION DETECTOR, WHEEL BEARING EQUIPPED THEREWITH AND PROCESS FOR MANUFACTURING THE SAME

Номер: US20130221952A1
Автор: Ishikawa Tomomi, Ozaki Takayoshi, Takahashi Toru
Принадлежит: NTN CORPORATION

A sensor assembly is sandwiched together with a rubber material mixed with a vulcanizing agent in a mold assembly including an upper mold and a lower mold. The upper and lower molds, while completely sandwiching the sensor assembly, are heated for a predetermined length of time, and a pressure is then applied to the sensor assembly to complete a compressive molding. 1. A rotation detecting device arranged in face-to-face relation with a metallic body or magnet body provided in a rotational member , the rotation detecting device comprising:a magnetic sensor;peripheral component parts electrically or mechanically connected with the magnetic sensor, the peripheral components including an electrode electrically connected with the magnetic sensor, a cable core line electrically connected with the electrode, a cable insulating sheath to electrically insulate the cable core line, and a portion of a cable covering to cover an exterior of the cable insulating sheath; anda fixture, made of a metallic material, to position the magnetic sensor and the peripheral component parts;the magnetic sensor, the peripheral component parts and the fixture being molded together so as to be covered by a thermoplastic elastomer or a material capable of exhibiting a rubber elasticity.2. The rotation detecting device as claimed in claim 1 , further comprising an electric terminal of the magnetic sensor claim 1 ,wherein the electric terminal or the electrode and the thermoplastic elastomer or the material capable of exhibiting the rubber elasticity are sealingly bonded together by the molding.3. The rotation detecting device as claimed in claim 1 , further comprising a connecting member to integrally connect the magnetic sensor and the fixture together claim 1 ,wherein the magnetic sensor, the peripheral component parts, the fixture and the connecting member are molded together so as to be covered by the thermoplastic elastomer or the material capable of exhibiting the rubber elasticity.4. The ...

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Номер записи: 49
29-08-2013 дата публикации

ABSOLUTE POSITION RECORDING DEVICE OF MOTOR

Номер: US20130221953A1
Автор: CHANG TSANN-HUEI, CHIEN CHENG-EN, LIU CHIH-JUNG
Принадлежит:

An absolute position recording device of a motor includes a main spindle, a magnetic ring, a magnetic induction unit, an encoder, a counter, and an operation unit. The magnetic ring and the encoder are fixed on and rotated by the main spindle. The magnetic induction unit outputs square waves and the encoder outputs sine or cosine waves. The counter receives the square waves and calculates a number of rotations of the magnetic ring. The operation unit receives the sine or cosine waves and calculates an angular deflection relative to a standard position of the magnetic ring. The operation unit adds the angular deflection and the number of rotations and calculates an absolute angular position. 1. An absolute position recording device of a motor , comprising:a main spindle;a magnetic ring and a encoder set on the main spindle; the main spindle rotating the magnetic ring and the encoder, the magnetic ring surrounded by a plurality of magnets, and the encoder outputting signals in the form of sine or cosine waves according to rotations of the main spindle;a magnetic induction unit inducing a charge reflecting a change of magnetic poles of the magnets, and outputting signals in the form of square waves;a counter electronically connected to the magnetic induction unit to receive the signals in the form of square waves and calculate a cyclical number of revolutions of the magnetic ring according to the signals in the form of square waves; andan operation unit electronically connected to the encoder to receive the signals in the form of sine or cosine waves and calculate a deflected angle related to a standard position of the magnetic ring according to the signals in the form of sine or cosine waves; the operation unit electronically connected to the counter to add the deflected angle and the cyclical number calculated from the counter, and the operation unit calculating the absolute position of the motor according to a process of adding the deflected angle and the cyclical ...

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Номер записи: 50
29-08-2013 дата публикации

METHOD AND A SYSTEM FOR DETERMINING THE ANGULAR POSITION OF A ROTARY ELEMENT, AND A BEARING INCLUDING SUCH A SYSTEM

Номер: US20130221955A1
Автор: Gatesoupe Alexis, Moisy Stephane
Принадлежит:

This method determines an angular position of a rotary element in a system where a magnetic ring rotatably fastened to the rotary element in communication with multiple sensors each suitable for issuing a unitary electric signal representative of a magnetic field generated by the magnetic ring. At least two groups of sensors adapted to generate, based on the unitary sensor signals, at least one combined electric signal representative of the angular position of the magnetic ring. This method comprises; a) verifying the consistency the combined electric signal with at least one given rule b) assessing whether or not each group of sensors is correctly working based on the verification of step a); and if, a first group of sensors is not correctly working, disregarding its combined electric signal and relying on the combined electric signal of at least a second group of sensors for determining an angular position value. 113131515. A method for determining an angular position (θ) of a rotary element rotating with respect to a stationary element in a system where a magnetic ring rotatably fastened to the rotary element is arranged with respect to multiple sensors (CA-CA , CB-CB; CA-CA , CB-CB) each suitable for issuing a unitary electric signal representative of a magnetic field generated by the magnetic ring , the sensors are arranged in at least two groups (A , B) , each group of sensors being adapted to generate , on the basis of the unitary signals of its sensors , at least one combined electric signal (SA , SB) representative of the angular position of the magnetic ring , the method comprising the steps of:a) verifying, for each group of sensors (A, B), the consistency of its combined electric signal with at least one given rule;b) assessing whether or not each group of sensors (A, B) is correctly working on the basis of the verification of step a); and{'sub': 'c', 'c) if a first group of sensors (A) is considered not to be correctly working (FA=0), disregarding its ...

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Номер записи: 51
29-08-2013 дата публикации

ANGLE DETECTING DEVICE

Номер: US20130221956A1
Автор: Kotani Wakana, Nagai Toshihito, Okuya Hisayoshi
Принадлежит: AISIN SEIKI KABUSHIKI KAISHA

The detecting device comprises a rotation member with a magnet portion which generates a magnetic field having different polarities arranged alternately in a circumferential direction, a case having a bearing, an angle calculating device and an elastic member which biases the rotation member so that the rotation member is rotated, keeping a constant inclined angle relative to a central axis line of the bearing or a phase difference between a rotation phase of the rotation member and a rotation phase of the bearing rotating about the central axis line thereof with an inclined angle relative to the rotation member is kept constant regardless of the change of the rotation angle of the rotation member. 1. An angle detecting device comprising:a rotation member provided with a magnet portion which generates a magnetic field having polarities arranged alternately in a circumferential direction;a case having a bearing on which the rotation member is rotatably supported;an angle calculating means for detecting magnetic field components of the magnetic field in a plurality of different directions and calculating a rotation angle of the rotation member based on the detected magnetic field components; andan elastic member which biases the rotation member so that the rotation member is rotated, keeping a constant inclined direction relative to a central axis line of the bearing or biases the rotation member so that a phase difference between a rotation phase of the rotation member and a rotation phase of the bearing rotating about the central axis line thereof with the inclined direction relative to the rotation member is kept constant regardless of a change of the rotation angle of the rotation member.2. The angle detecting device according to claim 1 , wherein claim 1 ,the elastic member is in contact with the rotation member at one end and in contact with the case at the other end and whereinthe elastic member biases the rotation member in the central axis line direction of ...

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Номер записи: 52
29-08-2013 дата публикации

SENSOR ARRANGEMENT FOR CAPTURUING A TORQUE

Номер: US20130221957A1
Автор: Ludwig Ronny
Принадлежит: ROBERT BOSCH GMBH

The invention relates to a sensor arrangement () for capturing a torque acting on a shaft (), wherein the sensor arrangement () comprises a sensor unit () with a sleeve (), on which at least one sliding element and at least one first sensor which is sensitive to magnetic fields are arranged, and a magnetic-flux unit () with two magnetic flux-conducting rings (), wherein the at least one sliding element is arranged between the magnetic flux-conducting rings (), wherein the sensor unit and the magnetic-flux unit () are rotated relative to one another during a rotation of the shaft (), and wherein the at least one sensor which is sensitive to magnetic fields captures a magnetic flux conducted by the rings (). 1142801101211304102136341386841001161322830410213668410011613214283028302830. A sensor arrangement for capturing a torque which acts on a shaft () , wherein the sensor arrangement ( , , , , ) comprises a sensor unit ( , , ) with a sleeve ( , ) on which at least one sliding element and at least a first magnetic-field-sensitive sensor are arranged , and a magnetic flux unit ( , , , , ) with two magnetic-flux-conducting rings ( , ) , wherein the sensor unit ( , , ) and the magnetic flux unit ( , , , , ) are rotated relative to one another when the shaft () rotates , and wherein the at least one magnetic-field-sensitive sensor captures a magnetic flux which is conducted by the rings ( , ) , wherein , with the at least one magnetic-field-sensitive sensor , a magnetic field which changes during a rotational movement is detected and is converted into a signal which is dependent on the torque , characterized in that the at least one sliding element made of plastic is arranged between the magnetic-flux-conducting rings ( , ) and slides radially between the magnetic-flux-conducting rings ( , ) with defined play.22830684100116132. The sensor arrangement as claimed in claim 1 , in which the at least one sliding element is mounted in a direct claim 1 , sliding and self-guiding ...

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Номер записи: 53
12-09-2013 дата публикации

MEASURING ROTATION AND TILT OF A WHEEL ON AN INPUT DEVICE

Номер: US20130234700A1
Автор: Chauvin Nicolas, Theytaz Olivier
Принадлежит: Logitech Europe S.A.

Embodiments of the present invention include a roller for an input device, where the roller's absolute angular position is measured by a magnetic encoder. A magnet is attached to the roller, possibly inside the roller so as to make the embodiment more compact. In one embodiment, the magnetization is simple and low cost. Further, tight tolerances are not required, and such a system is easy to manufacture. In one embodiment, the sensor is covered by any non-ferromagnetic material, to protect it from foreign particles, and to reduce ESD. In one embodiment, the wheel consumes much less power than conventional wheels in input devices. In one embodiment, the tilting of the wheel is measured using the same sensor that is used for measuring the rotation of the wheel. In one embodiment, a ratcheting feel provided to the user when rotating the wheel is synchronized with the rotation signal. 123.-. (canceled)24. A system comprising:an input device including a housing;one or more processors;a wheel disposed in the housing and configured to rotate and tilt;a magnet coupled to the wheel such that the magnet rotates with the wheel, the magnet configured to generate a magnetic field;a sensor coupled to and controlled by the processor, the sensor configured to measure an amplitude of the magnetic field sequentially in a plurality of directions; and determine a direction of the magnetic field based on the sensor measurement;', 'generate a first signal based on the direction of the magnetic field;', 'determine a value of an amplitude of the first signal; and', 'generate a second signal based on the amplitude of the first signal, the first signal providing information regarding rotation of the wheel, and the second signal providing information regarding the tilt of the wheel., 'one or more non-transitory computer-readable storage mediums containing instructions configured to cause the one or more processors to25. The system of wherein the one or more processors are disposed in the ...

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Номер записи: 54
19-09-2013 дата публикации

Magnetic Logic Units Configured to Measure Magnetic Field Direction

Номер: US20130241536A1
Автор: Cambou Bertrand F., Hoberman Barry, Lee Douglas J., Mackay Ken
Принадлежит: CROCUS TECHNOLOGY INC.

An apparatus includes circuits, a field line configured to generate a magnetic field based on an input, a sensing module configured to determine a parameter of each circuit, and a magnetic field direction determination module configured to determine an angular orientation of the apparatus relative to an external magnetic field based on the parameter. Each circuit includes multiple magnetic tunnel junctions. Each magnetic tunnel junction includes a storage layer having a storage magnetization direction and a sense layer having a sense magnetization direction configured based on the magnetic field. Each magnetic tunnel junction is configured such that the sense magnetization direction and a resistance of the magnetic tunnel junction vary based on the external magnetic field. The parameter varies based on the resistances of the multiple magnetic tunnel junctions. The magnetic field direction determination module is implemented in at least one of a memory or a processing device. 1. An apparatus , comprising:a plurality of circuits, each of the plurality of circuits including multiple magnetic tunnel junctions, each magnetic tunnel junction including a storage layer having a storage magnetization direction and a sense layer having a sense magnetization direction; the sense magnetization direction of each magnetic tunnel junction is configured based on the magnetic field; and', 'each magnetic tunnel junction is configured such that the sense magnetization direction and a resistance of the magnetic tunnel junction vary based on an external magnetic field;, 'a field line configured to generate a magnetic field based on an input, whereina sensing module configured to determine a parameter of the each of the plurality of circuits, wherein the parameter of the each of the plurality of circuits varies based on the resistances of the multiple magnetic tunnel junctions included in the each of the plurality of circuits; anda magnetic field direction determination module configured ...

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Номер записи: 55
19-09-2013 дата публикации

ROTATION ANGLE DETECTOR

Номер: US20130241538A1
Автор: AKABANE Akira
Принадлежит: KEIHIN CORPORATION

A rotation angle detector includes: a magnet attached to a rotating shaft and magnetized in a certain direction orthogonal to an axis of the rotating shaft; and a non-rotary magneto-electric transducer placed to be opposed to an end surface of the magnet, and configured to detect a rotation angle of the rotating shaft in cooperation with the magnet through magneto-electric transduction. A concave curved surface is formed in the end surface of the magnet in order to make a magnetic flux of a magnetic field facing the end surface of the magnet closer to the magnet and flattened. Accordingly, it is possible to provide a rotation angle detector which is compact in size and has a stable accuracy for detecting the rotation angle, by making the curvature of the magnetic flux near the end surface of the magnet small and placing the magneto-electric transducer in that location. 1. A rotation angle detector comprising:a magnet attached to a rotating shaft, and magnetized in a certain direction orthogonal to an axis of the rotating shaft; anda non-rotary magneto-electric transducer placed so as to be opposed to an end surface of the magnet, and configured to detect a rotation angle of the rotating shaft in cooperation with the magnet through magneto-electric transduction, whereina concave curved surface is formed in the end surface of the magnet in order to make a magnetic flux of a magnetic field facing the end surface of the magnet closer to the magnet and flattened.2. The rotation angle detector according to claim 1 , whereinthe magnet is made from a magnetic synthetic resin, andthe magnet is molded on an end portion of the rotating shaft.3. The rotation angle detector according to claim 1 , whereinthe concave curved surface is formed as a concave spherical surface having a center on the axis of the rotating shaft, anda magnetism sensing center of the magneto-electric transducer is placed at or in a vicinity of the center. The present application claims priority under 35 ...

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Номер записи: 56
19-09-2013 дата публикации

Rotary Position Sensor

Номер: US20130241539A1
Автор: Cook Kim D., Newman Robert L., Wolschlager Kevin C.
Принадлежит:

A sensor assembly for sensing a movable object which, in one embodiment, includes a housing defining an interior cavity. A rotor is retained in the cavity. The rotor defines a central bore and a magnet is mounted in an off-center pocket defined by the rotor. The rotor is coupled to the shaft of the movable object whose position is to be measured. A sensor is also retained in the cavity in a relationship at least partially overlying the magnet and adapted to sense at least the direction of the magnetic field generated by the magnet to generate an electrical signal indicative of the position of the movable object. In another embodiment, the rotor and sensor are mounted in separate interior housing cavities separated by an interior housing wall. 1. A sensor assembly for sensing the position of a movable object , comprising:a housing defining an interior cavity and including a wall defining an aperture;a sensor in the cavity;a rotor in the cavity, the rotor including a collar, the collar being aligned with the aperture in the wall of the housing;a magnet on the rotor, the magnet including at least a first straight side surface and the magnet generating a magnetic field extending through and in a direction generally normal to the first straight side surface of the magnet irrespective of the position of the magnet and the magnet at least partially overlying the sensor; andthe magnet and the sensor being movable relative to each other and the sensor being adapted to sense the magnitude and direction of the magnetic field and generate an electrical signal in response to the magnetic field sensed by the sensor.211. The sensor assembly of claim , further comprising a plate secured to the housing and covering the cavity , the plate defining an aperture in alignment with the collar of the rotor.3. The sensor assembly of claim 1 , wherein the housing defines an interior collar and the collar on the rotor abuts against and rotates relative to the collar in the housing.4. The ...

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Номер записи: 57
19-09-2013 дата публикации

ENCODER

Номер: US20130242289A1
Автор: Ishizuka Yoshi, Ito Shoji, Miyajima Tooru
Принадлежит: SANYO DENKI CO., LTD.

To realize an encoder having highly reliable detection accuracy and capable of reducing a device cost. A light detection unit of an encoder receives light irradiated by a light source and transmitted through light-transmitting portions of Gray code optical patterns of a rotating disk and a light-transmitting/shielding member, and detects the light as digital data. A magnetic detection unit detects a magnetic pattern of a magnet provided on a rotation center portion of the rotating disk as digital data. A processing unit compares the digital data of the magnetic detection unit and the digital data of the light detection unit, and corrects a detection error. 1. An encoder comprising:a rotating disk, on which a plurality of Gray code optical patterns having a light-transmitting portion and a light-shielding portion alternately in a rotation direction is formed in a radial direction;a light-transmitting/shielding member, on which an optical pattern having a light-transmitting portion and a light-shielding portion, and facing each of the Gray code optical patterns on the rotating disk is formed;a light source adapted to irradiate the Gray code optical patterns on the rotating disk and the optical pattern of the light-transmitting/shielding member with light;a light detection unit adapted to receive the light transmitted through the light-transmitting portions of the rotating disk and the light-transmitting/shielding member, and to output digital data in accordance with a rotation position of the rotating disk;a magnet provided on a rotation center portion of the rotating disk, and forming a magnetic pattern by an arrangement of a magnetic pole;a magnetic detection unit adapted to detect the magnetic pattern, and to output digital data in accordance with the rotation position of the rotating disk; anda processing unit adapted to obtain a rotation angle of the rotating disk using the digital data of the magnetic detection unit and the light detection unit.2. The encoder ...

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Номер записи: 58
19-09-2013 дата публикации

POSITION DETECTION DEVICE, IMAGE PICKUP APPARATUS, AND MAGNET

Номер: US20130242421A1
Автор: TAKEI TOMOYA
Принадлежит: SONY CORPORATION

There are provided a position detection device that makes it possible to enhance the precision of detection, an image pickup apparatus equipped with the position detection device, and a magnet provided in the position detection device. The position detection device includes: a magnet and a magnetic detection device arranged opposite to each other to be relatively movable in a straight-line direction. The magnet has a first surface facing the magnetic detection device, and has periodic projections and recesses arrayed on the first surface in a relative movement direction. 1. A position detection device comprising:a magnet and a magnetic detection device arranged opposite to each other to be relatively movable in a straight-line direction,wherein the magnet has a first surface facing the magnetic detection device, and has periodic projections and recesses arrayed on the first surface in a relative movement direction.2. The position detection device according to claim 1 , whereinthe magnet has the first surface and a second surface, the second surface being opposite to the first surface, anda distance between the first surface and the second surface at a middle of the magnet along the relative movement direction is longer than a distance between the first surface and the second surface at an end of the magnet along the relative movement direction.3. The position detection device according to claim 2 , whereinan outer region of the magnet includes, on the second surface, an inclined section inclined with respect to the relative movement direction, andthe distance between the first surface and the second surface in the inclined section increases toward the middle of the magnet in the relative movement direction.4. The position detection device according to claim 3 , whereinthe periodic projections and recesses include a starting projection at the end of the magnet in the relative movement direction.5. The position detection device according to claim 4 , whereinthe outer ...

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Номер записи: 59
19-09-2013 дата публикации

System and method of locating an x-ray imaging apparatus and corresponding x-ray imaging apparatus

Номер: US20130243166A1
Автор: Carlos Martinez Ferreira, Romain Moulin
Принадлежит: General Electric Co

A system for determining the position of an X-ray imaging apparatus mounted on an automatic mobile device is provided. The system comprises at least one mechanical link jointed to a reference point and to the X-ray imaging apparatus, and at least one measuring device configured to measure a variation of rotation angles of the at least one mechanical link relative to the reference point and to the X-ray imaging apparatus when moved.

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Номер записи: 60
19-09-2013 дата публикации

ALIGNMENT CORRECTION SYSTEM AND METHOD OF USE

Номер: US20130245993A1
Автор: BOTTINI Clemente, FOSTER Robert J., YOUNG Roger M., ZANGOOIE Shahin, Zhou Lin
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

A system and method is provided for correcting alignment of a product on a tool and, more particularly, to a system and method for correcting alignment of a wafer on a chuck of a tool. The system is a tool including at least one contact near a circumference of the tool and a grounded contact proximate to the at least one contact. 1. A tool , comprising:at least one contact near a circumference of the tool;a grounded contact proximate to the at least one contact; an independently moveable inner cylinder or plate on the tool; and', 'a computing infrastructure having executable code configured to calculate an angle of displacement of a wafer based on measured resistances of opposing branches of the at least one contact from a point of electrical contact with the wafer, wherein', is coupled to ammeters via low resistance connecting wires comprised of one of silver, copper, aluminum, gold and platinum,', 'is at least one arc shaped contact and is made of one of Manganin, copper, platinum and aluminum, and', 'is at least two contacts and the computing infrastructure calculates a centering alignment of the wafer on the tool based on a triangulation of contacts on a backside of the wafer and two of the at least two contacts,, 'the at least one contact, 'the at least one contact and grounded contact form a closed circuit when a contact on a back of a wafer bridges a gap therebetween,', 'the independently moveable inner cylinder or plate is configured to lift, rotate and lower a wafer to adjust an alignment angle of the wafer, and', 'the independently moveable inner cylinder or plate is controllable by a control., 'at least one spring on an underside of the contact to provide an upward biasing force;'}2. A tool , comprising:at least one contact near a circumference of the tool;a grounded contact proximate to the at least one contact;at least one spring on an underside of the contact to provide an upward biasing force; and calculates an angle of displacement of a wafer based ...

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Номер записи: 61
26-09-2013 дата публикации

ROTATION ANGLE AND TORQUE DETECTION DEVICE

Номер: US20130249538A1
Автор: HIROSE Shinji, OIKE KOUJI, SASANOUCHI KIYOTAKA
Принадлежит: Panasonic Corporation

A rotation angle and torque detection device includes a first rotating body, a second rotating body, a first magnet, a first magnetism detecting element, a first detecting body, a second magnet, a second magnetism detecting element, a second detecting body, a third magnet, a third magnetism detecting element, and a control circuit. The control circuit outputs a rotation torque signal and a rotation angle signal. The first magnetism detecting element outputs a torque detection signal. 1. A rotation angle and torque detection device comprising:a first rotating body;a second rotating body that rotates together with the first rotating body;a first magnet mounted on the first rotating body;a first magnetism detecting element for detecting magnetism of the first magnet, and outputting it as a torque detection signal;a first detecting body that rotates together with the first rotating body or the second rotating body;a second magnet mounted on the first detecting body;a second magnetism detecting element for detecting magnetism of the second magnet and outputting it as a first angle detection signal;a second detecting body that rotates together with the first detecting body or the first rotating body;a third magnet mounted on the second detecting body;a third magnetism detecting element for detecting magnetism of the third magnet and outputting it as a second angle detection signal; anda control circuit coupled to the first magnetism detecting element, the second magnetism detecting element, and the third magnetism detecting element,wherein the first magnetism detecting element outputs the torque detection signal to the control circuit and to outside of the rotation angle and torque detection device; andthe control circuit calculates rotation torque of the first rotating body from the torque detection signal, calculates a rotation angle of the first rotating body from the first angle detection signal and the second angle detection signal, and outputs a rotation torque ...

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Номер записи: 62
26-09-2013 дата публикации

PROCESS FOR DETERMINING THE POSITION OF THE ROTOR OF AN ELECTRIC MACHINE

Номер: US20130253881A1
Автор: Strothmann Rolf
Принадлежит:

A process for determining the position, in particular the angular position, of the rotor of an electric machine in relation to the stator. A first measured value of the position is determined according to a first method. Another measured value is simultaneously determined according to at least one other measurement method, and a mean value for the position of the rotor is determined from the measured values. Preferably, the mean value is determined taking into account weighting factors that take into consideration different spreads of the measured values. 110-. (canceled)11. A process for determining a position of a rotor , especially the rotational position of the rotor , of an electric machine in relation to a stator , the process comprising the steps of: determining a first measurement value (α) of the position by a first measurement method; simultaneously determining a second measurement value (α) by a second measuring method; and determining an average value (α) of the position of the rotor from the two measurement values.12. The process according to claim 11 , including determining the average value (α) taking into consideration different weighting factors (A claim 11 , B) claim 11 , which take into account ranges of variation of the measurement values (α claim 11 , α).13. The process according to claim 12 , including forming a periodic function from the measurement values (α claim 12 , α) as argument values; function values claim 12 , multiplied by the weighting factors claim 12 , being added together; and claim 12 , for determining of the average value (α) from the weighted sum as an argument claim 12 , a value of an inverse function of the periodic function is formed.14. The process according to claim 13 , including determining the average value (α) in the following manner:{'br': None, 'i': A', '+B, 'sub': 1', '2, 'sin αsin α=sin α'}{'br': None, 'i': A', '+B, 'sub': 1', '2, 'cos αcos α=cos α'}{'br': None, 'i': A', '+B', 'A', '+B, 'sub': 1', '2', '1', '2, ' ...

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Номер записи: 63
03-10-2013 дата публикации

THROTTLE OPENING DETECTION DEVICE

Номер: US20130257416A1
Автор: Kawasaki Yuichi, NOMURA Yoshihiro
Принадлежит: HONDA MOTOR CO., LTD.

A throttle opening detection device includes a rotor which is rotated in an interlocking manner by manipulation of an acceleration grip which is mounted together with the rotor on a handlebar. First magnets are arranged near a peripheral portion of one side surface of the rotor along the circumferential direction of the rotor, while second magnets are respectively laminated to the first magnets, and have opposite polarities to the first magnets. The first magnets with the second magnets laminated thereto are disposed with a set spacing therebetween. A magnetic sensor for detecting a magnetic force generated by all the magnets is arranged to oppose, with a clearance therebetween, the one side surface of the rotor in which the magnets are arranged, in an axial direction of the rotor. 1. A throttle opening detection device comprising:a rotor which is mounted on a handle bar and rotatable in an interlocking manner by manipulation of an acceleration grip also mounted on the handle bar;at least two magnets which are mounted on the rotor;a magnetic sensor which detects a magnetic force generated by the magnets; anda housing which houses the rotor and the magnetic sensor and is mounted on the handle bar, whereinthe magnets are arranged in the vicinity of a peripheral portion of one side surface of the rotor and adjacent to each other along the circumferential direction of the rotor, andthe magnetic sensor is arranged to face the one side surface in an opposed manner in the axial direction of the rotor.2. The throttle opening detection device according to claim 1 , wherein the magnetic sensor is arranged at a position on a side of the rotor opposite to the acceleration grip with the rotor sandwiched therebetween.3. The throttle opening detection device according to claim 1 , wherein the magnets are spaced apart from each other along the circumferential direction of the rotor.4. The throttle opening detection device according to claim 1 , wherein two of said magnets are ...

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Номер записи: 64
03-10-2013 дата публикации

POSITION SENSING TRANSDUCER

Номер: US20130257417A1
Автор: Ely David
Принадлежит:

A number of position sensors are disclosed. The position sensors are arranged to inductively sense the position of a target relative to a number of sensor coils. In one embodiment, the target comprises first, second and third portions positioned on either side of an axis of rotation, such that lateral misalignment between the target and the sensor is compensated between the interaction of the different portions and the sensor coils. In another embodiment, the target comprises first and second portions that are separated along the measurement path such that in a first range of relative positions, the first target portion is adjacent the one or more sensor coils and in a second range of relative positions, the second target portion is adjacent the one or more sensor coils. The first and second target portions are asymmetrically arranged relative to the sensor coils such that when each target portion is adjacent the same portion of the sensor coils, different signals are induced in the sensor coils. 1. A transducer for a rotary position sensor comprising:one or more coils arranged relative to a sensor axis between an inner radius and an outer radius;a target having first, second and third portions that are circumferentially spaced apart from each other adjacent the one or more coils and that are arranged relative to a target axis: i) so that said first portion is positioned between said inner and outer radii during the relative rotation of said target and said one or more coils; and ii) so that said second and third portions are positioned adjacent said inner radius or said outer radius during the relative rotation of said target and said one or more coils;wherein said target is arranged to magnetically couple with said coils so that signals are generated that depend on the relative rotational position of the target and the one or more coils; andwherein said second and third portions of the target are arranged on either side of the target axis to compensate for ...

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Номер записи: 65
03-10-2013 дата публикации

APPARATUS FOR POSITION ASCERTAINMENT

Номер: US20130257418A1
Автор: Gutzmer Marcus, Nolte Uwe, Sonntag Guido
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

The position of a moveable component which is coupled to an electric machine is ascertained, where the electric machine serves, in the event of manual movement of the component, as a generator for generating electric energy for a position ascertainment arrangement. The coupling of the electric machine with the component is configured such that a magnetic attraction reaction and/or repelling reaction between magnetic and/or magnetized parts of a rotor and of a stator of the electric machine results in a short-term acceleration of the rotor, which is unhindered by the coupling, and in a resulting short-term increase of the electric energy generated. 11323282310112108. An apparatus () for ascertaining the position of a moveable component () coupled to an electrical machine () , wherein with a manual movement of the component () the electrical machine () is used as a generator for generating electrical energy for a position ascertainment arrangement and wherein the coupling () of the electrical machine () with the component () is embodied such that a magnetic attraction reaction and/or repelling reaction between magnetic and/or magnetized parts of a rotor () and a stator () of the electrical machine () result in a short-term acceleration of the rotor () which is unhindered by the coupling () and a short-term increase in the generated electrical energy resulting therefrom.2123. The apparatus () as claimed in claim 1 , characterized in that the electrical machine () is used as a drive motor for moving the component () in the event of an adequate electrical power supply.31111012. The apparatus () as claimed in or claim 1 , characterized in that the stator () and/or the rotor () comprises at least one permanent magnet ().411112105. The apparatus () as claimed in claim 3 , characterized in that the stator () is embodied as a permanent magnet stator and at least one permanent magnet () is arranged on the rotor () at right angles to a rotor axle ().51101211. The apparatus () ...

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Номер записи: 66
03-10-2013 дата публикации

ROTATION ANGLE DETECTION DEVICE, TORQUE DETECTION DEVICE, AND ELECTRIC POWER STEERING DEVICE

Номер: US20130261990A1
Автор: URA Noritake
Принадлежит: JTEKT CORPORATION

A rotation angle detection device includes a rotation angle sensor and detection means. Each of sensor signals of the rotation angle sensor has a composite waveform of an nth multiple angle component corresponding to a multiple of the number of phases, and an mth multiple angle component corresponding to a non-multiple of the number of phases. The detection means subtracts an average value of the respective sensor values from the respective sensor values, and extracts values of the mth multiple angle components from the respective sensor values to detect an electric angle having a multiplication factor of angle of m, and converts m mechanical angle estimated values which are estimated based on the electric angle into values of the nth multiple angle component, and compares the converted values with the average value to detect a mechanical angle with one mechanical rotation of a detection target as one cycle. 1. A rotation angle detection device , comprising:a rotation angle sensor configured to output sensor signals of three or more phases set so that values of the signals are changed according to a rotation angle of a detection target, and phases of signal changes corresponding to the rotation angle are equally shifted; anddetection means configured to detect the rotation angle based on the respective sensor signals,{'sup': th', 'th, 'wherein each of the sensor signals has a composite waveform of an nmultiple angle component corresponding to a multiple of the number of phases, and an mmultiple angle component corresponding to a non-multiple of the number of phases,'}wherein n is an integer and m is an integer, and{'sup': th', 'th, 'wherein the detection means subtracts an average value of the respective sensor values from the respective sensor values, and extracts values of the mmultiple angle components included in the respective sensor values to detect an electric angle having a multiplication factor of angle of m, and converts m mechanical angle estimated values ...

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Номер записи: 67
03-10-2013 дата публикации

POSITION DETECTION DEVICE

Номер: US20130262009A1
Автор: OOWADA Takahumi
Принадлежит: Denso Corporation

In a position detection device, an amplitude modulation is executed for AC excitation signals Sc using modulation wave signals. Differential amplifiers execute a voltage conversion of the modulated wave signal Sin, Cos to digital data SIN, COS and transmit them to a microcomputer. The microcomputer multiplies the modulated wave signals SIN, COS with parameters cos φ, sin φ, and executes a subtraction of the multiplied value to obtain an error-correlation value ε. An angle calculations section in the microcomputer receives a detected value εc obtained by multiplying the error-correlation value ε with a binary detection signal Rd. The binary detection signal Rd corresponds to a positive sign or a negative sign of the signal Sc. The sampling time of the AC excitation signal Sc is set to a time at which an absolute value of the AC excitation signal Sc exceeds a regulated value. 2. The position detection device according to claim 1 , wherein the alternating current excitation signal sampling section periodically executes the sampling of the alternating current excitation signal on the basis of a pattern of a predetermined sampling interval claim 1 , and the avoidance section comprises a sampling time setting section configured to set the pattern of the predetermined sampling interval so that the sampling time does not contain a sampling time at which an absolute value of the alternating current excitation signal is not more than a regulated value.3. The position detection device according to claim 1 , wherein the avoidance section comprises a sampling time changing section configured to adjust a next sampling time on the basis of the sampling result of the alternating current excitation signal sampling section so that the sampling time does not contain a sampling time at which an absolute value of the alternating current excitation signal is not more than a regulated value.4. The position detection device according to claim 1 , wherein the avoidance section comprises a ...

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Номер записи: 68
10-10-2013 дата публикации

Magnetic Field Angle Measurement Apparatus, Rotation Angle Measurement Apparatus, and Rotation Machine, System, Vehicle, and Vehicle Drive Apparatus Each Using Same Rotation Angle Measurement Apparatus

Номер: US20130264915A1
Автор: Fukatsu Katsuaki, MATSUMURA Takafumi, Suzuki Mutsumi
Принадлежит: Hitachi Automotive Systems, Ltd.

In a rotation angle measurement apparatus using a bridge configuration of a magneto-resistance element, a correct angle is not output when a fault occurs. For this reason, there is a problem in which an upper-layer system using the same is broken down. However, in order to solve this problem, there is provided a rotation angle measurement apparatus including a SIN bridge and a COS bridge each of which includes a magneto-resistance element and a detection unit, wherein the detection unit outputs an angle signal based on a signal output from a normal half bridge when a fault occurs in any one of respective half bridges of the COS bridge or the SIN bridge. 1. A magnetic field angle measurement apparatus comprising:a COS bridge and a SIN bridge each of which includes a magneto-resistance element; anda detection unit,wherein the detection unit outputs an angle signal based on a signal output from a normal half bridge when a fault occurs in any one of respective half bridges of the COS bridge or the SIN bridge.2. The magnetic field angle measurement apparatus according to claim 1 , further comprising:a unit for identifying the normal half bridge.3. The magnetic field angle measurement apparatus according to claim 2 ,wherein the detection unit outputs a fault transmission signal when outputting an angle signal based on the signal output from the normal half bridge.4. The magnetic field angle measurement apparatus according to claim 3 ,wherein a stop transmission signal is provided in addition to the fault transmission signal.5. The magnetic field angle measurement apparatus according to claim 3 ,wherein the fault transmission signal is output as a digital signal by using the same signal line as that of the angle signal.6. A rotation angle measurement apparatus comprising:a magnetic flux generator which is attached to a rotation body; and{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the magnetic field angle measurement apparatus according to ,'}wherein the rotation ...

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Номер записи: 69
10-10-2013 дата публикации

Method and device for determining the absolute position of a movable body

Номер: US20130268234A1
Автор: Josef Janisch
Принадлежит: Zentrum Mikroelektronik Dresden GmbH

In a method for determining absolute position of a mobile element in reference to two magneto-sensitive sensors, having a source of a magnetic field fastened to the element, a first sensor signal and a second sensor signal are measured with one magneto-sensitive sensor each. An amplitude ratio of the respective sensor signals and the off-set values about the respective zero point of the sensor signals are determined from the minimum and maximum values of the sensor signals, and from these values, scaled sensor signals are calculated that form a sum signal and a difference signal, which are scaled, with the determination of the minimum and the maximum values occurring by a relative movement of the element over a full range of motion, and an absolute position is calculated via the scaled sum signal and the scaled difference signal.

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Номер записи: 70
17-10-2013 дата публикации

ENCODER READHEAD APPARATUS

Номер: US20130269198A1
Автор: Kogej Peter, Ogrin Aljaz, Sivec Matjaz
Принадлежит:

The present invention relates to an encoder readhead. The readhead includes a housing having an opening for capturing an encoder scale including an elongate rod having a substantially circular cross-section, the opening defining an axial direction along which a captured encoder scale can slide back and forth. A scale reader, which may include an array of Hall sensors, is provided for reading a portion of an encoder scale located in the opening. The housing includes an access portion that allows the encoder scale to be inserted into, and/or removed from, the opening by a relative movement between the housing and the encoder scale in a direction other than the axial direction. 1. An encoder readhead , comprising:a housing having an opening for capturing an encoder scale comprising an elongate rod having a substantially circular cross-section, the opening defining an axial direction along which a captured encoder scale can slide back and forth; anda scale reader for reading a portion of an encoder scale located in the opening,wherein the housing includes an access portion that allows the encoder scale to be inserted into, and/or removed from, the opening by a relative movement between the housing and the encoder scale in a non-axial direction.2. An encoder readhead according to claim 1 , wherein the access portion allows the encoder scale to be inserted into claim 1 , and/or removed from claim 1 , the opening by a relative movement between the housing and the encoder scale in a direction substantially perpendicular to the axial direction.3. An encoder readhead according to claim 1 , wherein the access portion comprises a gap formed in a side wall of the housing claim 1 , the gap providing side access to the opening that allows the scale member to inserted into claim 1 , and/or removed from claim 1 , the opening through the gap.4. An encoder readhead according to claim 3 , wherein the housing defines a gap having at least one elastically deformable wall portion that ...

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Номер записи: 71
17-10-2013 дата публикации

Stroke amount detection device

Номер: US20130271118A1
Автор: Akitoshi Mizutani, Hitomi Honda, Yoshiyuki Kono
Принадлежит: Denso Corp

A stroke amount detection device includes a yoke, a magnetic flux generation section, and a magnetism detection section. The yoke has a protruding section that protrudes to outside the yoke. The magnetic flux generation section is located in the yoke. The magnetism detection section is disposed between the magnetic flux generation section and the protruding section. The magnetism detection section is disposed at a fixed position with respect to the magnetic flux generation section. The magnetism detection section outputs a signal in accordance with a magnetic flux density generated due to a relative movement of the yoke with respect to the magnetism detection section.

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Номер записи: 72
17-10-2013 дата публикации

CAPACITIVE ROTARY TRANSDUCER

Номер: US20130271119A1
Автор: Backes Ulrich, Reise Wulf
Принадлежит: TRW Automotive Electronics & Componets GmbH

A capacitive rotary encoder has a stator and a rotor as well as stator electrodes firmly arranged at the stator on an encoding path coaxial to the rotor axis, and coupling electrodes arranged at the rotor. The coupling electrodes are guided over the stator electrodes at a small axial distance from the encoding path by rotation of the rotor, wherein they each cover stator electrodes adjacent in the peripheral direction and connect the latter capacitively to each other. Interrogation electronics detects for each of the stator electrodes a capacitive coupling with an adjacent stator electrode caused by a coupling electrode of the rotor. This permits the reliable detection of the angular position of the rotor both statically and dynamically. 1. A capacitive rotary encoder having a stator and a rotor as well as stator electrodes firmly arranged at the stator on an encoding path coaxial to the rotor axis , each of these stator electrodes being electrically separated from an adjacent stator electrode , and coupling electrodes which are arranged at the rotor and are electrically separated from each other , the coupling electrodes being guided over the stator electrodes at a small axial distance from the encoding path when the rotor is rotated and each covering stator electrodes adjacent in the peripheral direction and connecting the latter capacitively to each other , and having interrogation electronics which detects for each of the stator electrodes a capacitive coupling with an adjacent stator electrode caused by a coupling electrode of the rotor.2. The rotary encoder according to claim 1 , wherein the stator electrodes are arranged at equal angular distances along the encoding path.3. The rotary encoder according to claim 1 , wherein the coupling electrodes have a length claim 1 , as measured in the peripheral direction claim 1 , which corresponds approximately to the peripheral length of two adjacent stator electrodes.4. The rotary encoder according to claim 1 , ...

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Номер записи: 73
17-10-2013 дата публикации

RESOLVER

Номер: US20130271121A1
Автор: URA Noritake
Принадлежит: JTEKT CORPORATION

A resolver according to the invention includes a stator provided with a plurality of teeth, and first to third phase output coils wound around the teeth. When voltages induced in the first to third phase output coils change based on rotation of a rotor, voltage signals corresponding to an electrical angle of the rotor are output from the output coils. One of the first to third phase output coils is wound around each of the teeth. With respect to each of the phases, the distribution of the numbers of turns of each phase output coils, among the first to third phase output coils, is set to a sinusoidal distribution with respect to the electrical angle of the rotor. 1. A resolver including a stator that surrounds a rotor and that is provided with a plurality of teeth , and multiple phase output coils that are wound around the teeth , the resolver being configured such that voltages induced in the respective phase output coils change due to changes in magnetic fluxes applied to the multiple phase output coils based on rotation of the rotor , voltage signals corresponding to an electrical angle of the rotor are output from the multiple phase output coils , and a shaft angle multiplier is set to 2× or more , wherein ,one of the multiple phase output coils is wound around each of the teeth; andwith respect to each of the phases, a distribution of the numbers of turns of each phase output coils for the corresponding teeth is a sinusoidal distribution with respect to the electrical angle of the rotor.2. The resolver according to claim 1 , wherein claim 1 , with respect to each of the phases claim 1 , winding positions of each phase output coils for the corresponding teeth are dispersed in a circumferential direction of the rotor.3. The resolver according to claim 1 , wherein claim 1 , when one phase output coils claim 1 , among the multiple phase output coils claim 1 , are wound around the teeth of which positions in electrical angle of the rotor coincide with each other ...

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Номер записи: 74
17-10-2013 дата публикации

ANGLE SENSOR

Номер: US20130271122A1
Автор: KANEMITSU Ryojiro, KINO Hisashi, Nakamura Kazuhiro, Suzuki Shinya
Принадлежит:

An angle sensor includes a sensor rotor formed with a planar coil and a sensor stator including a multi-X type planar coil placed to face a surface of the sensor rotor. On a stator substrate of the sensor stator are provided forward-direction planar coils and reverse-direction planar coils, and positive and negative terminals adjacently arranged. The forward-direction and reverse-direction planar coils are connected in series through connecting wires. One of both ends of the series-connected planar coils is connected to the positive terminal through the wire and the other end is connected to the negative terminal through the wire. The wires are arranged along arrangement of the series-connected planar coils but in a range less than a full circle of the arrangement. A turn-back connecting wire extending from one end of the series of planar coils is arranged along the other connecting wire and connected to the negative terminal. 1. An angle sensor comprising:a sensor rotor to be mounted on a rotary shaft and having a surface on which a planar coil is formed; anda sensor stator placed with a surface facing the surface of the sensor rotor, a stator substrate;', 'a plurality of forward-direction planar coils each wound in a spiral form in a forward direction and a plurality of reverse-direction planar coils each wound in a spiral form in a reverse direction opposite to the forward direction, the forward-direction planar coils and the reverse-direction planar coils being formed on the stator substrate and electrically connected so that the reverse-direction planar coils are in opposite phase to the forward-direction planar coils;', 'a positive terminal and a negative terminal provided to be connectable to an external device; and', 'connecting wires including a turn-back connecting wire and other connecting wires,, 'wherein the sensor stator includeswherein the forward-direction planar coils and the reverse-direction planar coils are respectively alternately arranged in a ...

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Номер записи: 75
17-10-2013 дата публикации

Measuring Device

Номер: US20130271156A1
Автор: Armbruster Ralf, Brutschin Wolfgang, Schleith Christoph, Strütt Bernd
Принадлежит: Endress + Hauser GmbH = Co. KG

A measuring device for measuring a process variable, comprising: an input circuit having a supply line and a return line, connectable to a superordinated unit. Energy supply of the measuring device and signal transmission, between the measuring device and a superordinated unit occurs over a line-pair. Input voltage is applied to the measuring device via the line pair. A series regulator installed in the supply line for controlling an electrical current flowing via the line-pair, a shunt regulator connected after the series regulator and installed in a parallel branch, and an apparatus for controlling a voltage drop across the series regulator are provided. The apparatus sets the voltage drop across the series regulator as a function of the applied input voltage, which is greater than a predetermined minimum input voltage, to a value predetermined by a characteristic curve for the particular input voltage and lying above a minimum value required for operation of the series regulator. A measuring sensor connected to the input circuit and supplied with energy via the input circuit for determining the process variable and for producing a measurement signal representing the process variable. 111-. (canceled)12. A measuring device for measuring a process variable , comprising:an input circuit, having:a line-pair, namely a supply line and a return line, connectable to a superordinated unit, wherein, during operation, energy supply to the measuring device and signal transmission, especially of an output signal representing the process variable, between the measuring device and the superordinated unit occurs over said line-pair, and wherein, during operation, an input voltage is applied to the measuring device via said line-pair;a series regulator installed in said supply line for controlling an electrical current flowing via said line-pair;a shunt regulator connected after said series regulator and installed in a parallel branch connecting said supply line with said return ...

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Номер записи: 76
24-10-2013 дата публикации

IMPULSE RING FOR A BEARING ASSEMBLY, BEARING ASSEMBLY COMPRISING SUCH AN IMPULSE RING AND ROTARY ELECTRICAL MACHINE COMPRISING SUCH A BEARING ASSEMBLY

Номер: US20130278118A1
Автор: Chaussat Sylvain, Maze Pierrick
Принадлежит:

This impulse ring () for a bearing assembly comprising a rotative element on which the impulse ring () is mounted, is rotatable with respect to a fixed sensing element adapted to detect a magnetic field generated by the impulse ring (). The impulse ring () comprises at least one pair of magnetic poles (N, S) or at least one magnet () with north poles (N) and south poles (S) alternatively arranged along its circumference. The intensity of the magnetic field generated by the north poles (N) is different from the intensity of the magnetic field generated by the south poles (S). 12. An impulse ring () for a bearing assembly comprising:a rotative element on which the impulse ring is mounted, rotatable with respect to a fixed sensing element adapted to detect a magnetic field (Br) generated by the impulse ring, the impulse ring having at least one pair of magnetic poles (N, S) or at least one magnet with north poles (N) and south poles (S) alternatively arranged along the circumference of the impulse ring, whereinthe intensity of the magnetic field (Bnp) generated by the north poles (N) is different from the intensity of the magnetic field (Bsp) generated by the south poles (S).2. The impulse ring according to claim 1 , wherein all the north poles (N) have the same volume claim 1 , wherein all the south poles (S) have the same volume claim 1 , and wherein the north poles (N) and the south poles (S) have different volumes.3. The impulse ring according to claim 1 , wherein the north poles (N) and south poles (S) cover angular sectors having different apex angles.4122. The impulse ring according to claim 1 , wherein the north poles (N) and south poles (S) have different thicknesses (t claim 1 , t) with respect to a radial direction (Y-Y′) of the impulse ring ().5. The impulse ring according to claim 1 , wherein the north poles (N) and the south poles (S) have different widths claim 1 , with respect to a direction parallel to the rotation axis (X-X′) of the impulse ring.6. ...

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Номер записи: 77
24-10-2013 дата публикации

DETERMINING THE ANGULAR POSITION OF ROTOR

Номер: US20130278248A1
Автор: Gutzmer Marcus, Krause Uwe, Nolte Uwe
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

An angular position transmitter determines the angular position of the rotor of a motor using at least one magnet indirectly or directly connected to the motor shaft and at least one magnetically sensitive storage unit having a plurality of storage cells arranged such that at least some of the storage cells are magnetized by the magnet. The storage cells are read, and the angular position is determined from a geometric position of the magnetized cells. 113-. (canceled)14. A method for determining the angular position of a rotor of a motor , comprising:connecting at least one magnet indirectly or directly to a motor axle;arranging at least one magnetically sensitive storage device with a number of storage cells, such that at least some of the storage cells are magnetized by the magnet;reading the storage cells; anddetermining the angular position from a geometric position of magnetized storage cells in the at least one magnetically sensitive storage device.15. The method as claimed in claim 14 , wherein said determining uses at least one statistical method to determine the angular position.16. The method as claimed in claim 14 , wherein the magnet is magnetized centrically and arranged eccentrically with respect to the motor axle.17. The method as claimed in claim 14 , further comprising storing a number of rotations of the motor axle in a non-volatile storage device.18. The method as claimed in claim 17 , wherein the at least one magnetically sensitive storage device is a non-volatile storage device and the number of rotations is stored in at least one storage cell not magnetized by the magnet.19. The method as claimed in claim 18 , wherein the at least one magnetically sensitive storage device includes at least one shielded storage cell that is shielded from being magnetized by the magnet.20. An angular position transmitter for determining the angular position of a rotor of a motor having a motor axle claim 18 , comprising:at least one magnet connected, during ...

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Номер записи: 78
24-10-2013 дата публикации

ROTATING ELECTRIC MACHINE

Номер: US20130278249A1
Автор: KAGAWA Ryuta, MATSUURA Kenji, UEMURA Koji
Принадлежит: KABUSHIKI KAISHA YASKAWA DENKI

A rotating electric machine according to the embodiments includes a rotating-electric-machine unit, a rotation detector, an Oldham coupling, and a washer. The rotating-electric-machine unit includes a shaft. The rotation detector includes a body and a rotation input pin that is rotatably provided on the body. The Oldham coupling couples the rotation input pin of the rotation detector and the shaft to each other while allowing any relative displacement in a direction intersecting an axial direction. The washer is provided on the rotating-electric-machine unit while being positioned with respect to the shaft. The washer includes an attaching portion at which the body of the rotation detector is attached to the washer. 1. A rotating electric machine comprising:a rotating-electric-machine unit including a shaft;a rotation detector including a body and a rotation input pin that is rotatably provided on the body;an Oldham coupling that couples the rotation input pin of the rotation detector and the shaft to each other while allowing any relative displacement in a direction intersecting an axial direction; anda washer provided on the rotating-electric-machine unit while being positioned with respect to the shaft, the washer including an attaching portion at which the body of the rotation detector is attached to the washer.2. The rotating electric machine according to claim 1 , a disc having a predetermined pattern and that rotates together with the rotation input pin; and', 'a light-emitting element and a light-receiving element that are provided across the disc from each other, and, 'wherein the body of the rotation detector includes'}wherein the shaft has a larger diameter than the disc.3. The rotating electric machine according to claim 1 ,wherein an attaching plane between the rotation input pin and the Oldham coupling is nearer to the shaft than an attaching plane between the washer and the body of the rotation detector.4. The rotating electric machine according to ...

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Номер записи: 79
07-11-2013 дата публикации

SENSOR FOR MEASURING ANGULAR POSITION, AND MEASUREMENT COMPENSATION METHOD

Номер: US20130297252A1
Автор: Baissac Jean-Marc
Принадлежит:

Method for compensating a reference measurement including a measurement of angular position α and a measurement of time T that are simultaneous at the time t for an angular position sensor of the type including a toothed wheel, includes the following steps: determination of a first measurement α of corresponding angular position at the moment in time t when a reference measurement is desired; triggering of a software acquisition function; substantially simultaneous acquisitions of a second measurement α′ of the angular position and of a measurement T of the time by software acquisition at a time t estimation of an error ΔT; and calculation of the compensated measurement of time, TTΔT. A Sensor for measuring angular position, of the type including a toothed wheel, implementing such a compensation method is described. 111. A method for compensating a reference measurement comprising a measurement of angular position α and a measurement of time T that are simultaneous at a moment in time t , for an angular position sensor of the type comprising a toothed wheel , characterized in that it comprises the following steps:{'b': '1', 'determination of a first measurement α of the angular position at the moment in time t when a reference measurement is desired,'}triggering of a software acquisition function, taking into account said function resulting in a time delay Δt,{'b': 2', '2, 'substantially simultaneous acquisitions of a second measurement α′ of the angular position and of a measurement T of the time by software acquisition at the time t,'}estimation of a time error ΔT,{'b': 1', '2, 'calculation of the measurement of time, T=T−ΔT.'}31. The method as claimed in claim 1 , where the determination of the first measurement of angular position α comprises a hardware acquisition carried out by a hardware device performing an acquisition of the value of angular position at the moment in time t when a reference measurement is desired claim 1 , and a software read of said ...

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Номер записи: 80
21-11-2013 дата публикации

Torque Angle Sensor

Номер: US20130305843A1
Автор: LEE Chang Hwan, LEE Young Wuk, WOO Myung Chul
Принадлежит: LG INNOTEK CO., LTD.

A torque angle sensor according to an exemplary embodiment of the present disclosure includes a torque sensor unit and an angle sensor unit at a housing centrally arranged with a rotation shaft, the torque sensor unit including a stator installed inside the housing, a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft, a collector installed at the housing to transmit a magnetic field of the torque magnet, a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector, and a PCB (Printed Circuit Board) mounted with the magnetic device module, wherein the PCB is arranged to a direction perpendicular to an axial direction of the rotation shaft and installed at a distal end with the magnetic device module. 1. A torque angle sensor , the torque angle sensor comprising: a housing centrally arranged with a rotation shaft; a torque sensor unit installed inside the housing to detect a torque change between an input shaft and an output shaft; and an angle sensor unit installed inside the housing to detect an angle change between the input shaft and the output shaft , wherein each of the torque sensor unit and the angle sensor unit is installed at a different section of the housing.2. The torque angle sensor of claim 1 , wherein the torque sensor unit includes a stator installed inside the housing claim 1 , a torque magnet rotatably installed at a center of the stator in conjunction with rotary operation of the rotation shaft claim 1 , a collector installed at the housing to transmit a magnetic field of the torque magnet claim 1 , a magnetic device module formed with an individually operating first magnetic device and a second magnetic device in one package to detect the magnetic field transmitted by the collector claim 1 , and a PCB (Printed Circuit Board) mounted with the magnetic ...

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Номер записи: 81
28-11-2013 дата публикации

Rotation angle detection device

Номер: US20130314079A1
Автор: Keigo Suzuki, Masaki Hiei
Принадлежит: Mikuni Corp

Provided is a rotation angle detection device capable of obtaining a detection result in a wider angle range with high accuracy. A rotation angle detection device 1 is provided with a part to be detected 4 which is attached to a throttle shaft S by a rotor 3 , and a Hall IC 5 which detects magnetic flux components of the part to be detected 4 . The Hall IC 5 is provided with a magnetism collecting plate 51 which is disposed facing the part to be detected 4 and extends along the rotation surface of the part to be detected 4 , and Hall elements 52 which detect the magnetic flux components of the part to be detected 4 , and output a signal corresponding to the rotation position of the throttle shaft S on the basis of the results of the detection by the Hall elements 52 . The Hall elements 52 a, 52 c each detect a magnetic flux component in an X-axis direction passing through the rotation axis of the throttle shaft S. The Hall elements 52 b, 52 d each detect a magnetic flux component in the Y-axis direction passing through the rotation axis of the throttle shaft S. The part to be detected 4 is configured by combining a semicircular yoke 41 with a semiannular magnet 42.

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Номер записи: 82
05-12-2013 дата публикации

ROTATION ANGLE DETECTION DEVICE

Номер: US20130320967A1
Автор: Honda Hitomi, KONO Yoshiyuki, MIZUTANI Akitoshi
Принадлежит: Denso Corporation

A rotation angle detection device includes a magnetic field generation section, a yoke, and a magnetism detection section. The magnetic field generation section has a first end portion and a second end portion. The yoke has such a tube shape that the magnetic field generation section and a rotation axis of a rotating body are located therein. The yoke has a gap at a part in a circumferential direction in a cross section perpendicular to the rotation axis. The magnetism detection section is disposed in the gap and outputs an electrical signal in accordance with a magnetic field strength in the gap. The magnetic field generation section is disposed in such a manner that a magnetic force line passing through the magnetic field generation section passes through the rotation axis regardless of the rotation angle of the rotating body and the rotation axis passes through the first end portion. 1. A rotation angle detection device that detects a rotation angle of a rotating body with respect to a supporting member , comprising:a magnetic field generation section fixed to one of the rotating body and the supporting member, the magnetic field generation section having a first end portion at which one of magnetic poles is located and a second end portion at which the other of magnetic poles is located;a yoke made of magnetic material, the yoke having such a tube shape that the magnetic field generation section and a rotation axis of the rotating body are located therein, the yoke having a gap at a part in a circumferential direction in a cross section perpendicular to the rotation axis, the yoke being fixed to the other of the rotating body and the supporting member; anda magnetism detection section disposed in the gap, the magnetism detection section outputting an electrical signal in accordance with a magnetic field strength in the gap which changes with a rotation of the rotating body, whereinthe magnetic field generation section is disposed in such a manner that a magnetic ...

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Номер записи: 83
19-12-2013 дата публикации

Single-Package Bridge-Type Magnetic-Field Angle Sensor

Номер: US20130334634A1
Автор: Insik Jin, James Geza Deak, Songsheng Xue, Weifeng Shen, Xiaofeng Lei, Xiaojun Zhang
Принадлежит: Insik Jin, James Geza Deak, Songsheng Xue, Weifeng Shen, Xiaofeng Lei, Xiaojun Zhang

A single-package bridge-type magnetic-field angle sensor comprising one or more pairs of magnetic tunnel junction sensor chips rotated relative to each other by 90 degrees in order to detect two magnetic field components in orthogonal directions respectively is disclosed. The magnetic-field angle sensor may comprise a pair of MTJ full-bridges or half-bridges interconnected with a semiconductor package lead. The magnetic-field angle sensor can be packaged into various low-cost standard semiconductor packages.

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Номер записи: 84
19-12-2013 дата публикации

ROTATION ANGLE SENSOR

Номер: US20130335070A1
Автор: Abe Kenichi, Matsumoto Tsutomu
Принадлежит:

A rotation angle sensor outputs detection signals based on a rotation angle of a rotary shaft. The detection signals that are output from the rotation angle sensor include first to fourth detection signals that sinusoidally change with the rotation angle of the rotary shaft and that are different in phase from one another. Here, a phase difference between the first detection signal and the second detection signal and a phase difference between the third detection signal and the fourth detection signal are each set to 90°. In addition, a phase difference between the first detection signal and the third detection signal and a phase difference between the second detection signal and the fourth detection signal are each set to 45°. 1. A rotation angle sensor that outputs detection signals corresponding to a rotation angle of a rotary shaft , whereinthe detection signals are first to fourth detection signals that sinusoidally change with respect to the rotation angle of the rotary shaft and that are different in phase from one another; anda phase difference φ between each predetermined pair of detection signals among the first to fourth detection signals falls within a range 0°<φ<180° or a range 180°<φ<360°.2. The rotation angle sensor according to claim 1 , wherein the phase difference between the first detection signal and the second detection signal and the phase difference between the third detection signal and the fourth detection signal are each set to 90°.3. The rotation angle sensor according to claim 2 , wherein:the phase difference between the first detection signal and the third detection signal and the phase difference between the second detection signal and the fourth detection signal are set to the same predetermined value; andthe predetermined value is set to any one of 45°, 135°, 225° and 315°.4. The rotation angle sensor according to claim 3 , comprising:a magnetic sensor; anda bias magnet that applies a bias magnetic field to the magnetic sensor and ...

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Номер записи: 85
19-12-2013 дата публикации

METHOD OF SCALE SUBSTRATE MANUFACTURE

Номер: US20130335071A1
Автор: Kogej Peter, Leskovsek Vojteh
Принадлежит:

The present invention relates to a method for producing a magnetic substrate for an encoder scale. The method comprising the step of mechanically working the substrate, wherein the substrate is cooled prior to the mechanical working step. In one embodiment, a stainless steel substrate is used. The stainless steel may comprise an austenite (non-magnetic) phase and a martensite (magnetic) phase. Mechanically working and cooling in this manner increases the amount of magnetic (martensite) phase material that is formed, thereby improving the magnetic contrast when non-magnetic (austenite) marking are subsequently formed on the substrate by laser marking. 1. A method for producing a magnetic substrate for an encoder scale , the method comprising the step of mechanically working the substrate , wherein the substrate is cooled prior to the mechanical working step.2. A method according to claim 1 , wherein the substrate is cooled after the mechanical working step.3. A method according to claim 1 , wherein the substrate is cooled during the mechanical working step.4. A method according to claim 1 , wherein the substrate comprises a metal.5. A method according to claim 4 , wherein the substrate comprises stainless steel.6. A method according to claim 5 , wherein the stainless steel is an austenite grade of stainless steel.7. A method according to claim 1 , wherein the mechanical working step is performed on a substrate that has been cooled to a temperature below room temperature.8. A method according to claim 1 , wherein the mechanical working step is performed on a substrate that has been cooled below 0° Celcius.9. A method according to claim 1 , wherein the mechanical working step is performed on a cryogenically cooled substrate.10. A method according to claim 1 , wherein the substrate comprises an elongate rod or tape.11. A method according to claim 1 , wherein the mechanical working step comprises drawing the substrate.12. A method according to claim 1 , wherein the ...

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Номер записи: 86
26-12-2013 дата публикации

Through Shaft Rotary Position Sensor

Номер: US20130342190A1
Автор: Payne Nicholas William
Принадлежит:

A rotary shaft sensor assembly includes 2 arc section magnets extending around the outer surface of a rotatable through shaft, arranged some distance from the shaft to produce a field, constant in strength and direction over a sufficiently large area. A sensor which measures changes in the direction of the magnetic flux generated by the magnets in response to rotation of the shaft is located anywhere in the field of constant strength and direction, specifically not needing to be located at the axis of rotation of the shaft. Optionally another such sensor can be mounted anywhere in the field at right angles to the first to allow for sensing over the full range of rotation of the shaft. 1. A rotary position sensor assembly comprisinga shafta magnet assembly fixed to the shaft designed to generate a magnetic field of constant strength and direction over a sufficiently large area,a sensor located anywhere in the abovementioned field, and adapted to measure a change in direction of the magnetic field generated by the magnet assembly in response to a change in the rotary position of the shaft2. The rotary position sensor assembly of where a second sensor is placed in the in the abovementioned field and adapted to measure a change in direction of the magnetic field generated by the magnet assembly in response to a change in the rotary position of the shaft3. The rotary position sensor assembly of where the second sensor is arranged so that its detection plane is perpendicular to the detection plane of the first sensor and perpendicular to the plane of the cross section of the magnet assembly and parallel to the axis of the shaft This application claims the benefit of the filing date and disclosure of U.S. Provisional Application Ser. No. 61/524,392 filed 17 Aug. 2011 which is explicitly incorporated herein by reference as are all references cited herein.This invention relates to a rotary position sensor assembly and more specifically to a non-contacting rotary position ...

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Номер записи: 87
26-12-2013 дата публикации

ANGLE SENSOR

Номер: US20130342192A1
Автор: KANEMITSU Ryojiro, Suzuki Shinya
Принадлежит: AISAN KOGYO KABUSHIKI KAISHA

An angle sensor includes a sensor rotor formed with a planar coil and a sensor stator placed to face the sensor rotor with a gap therefrom and formed with a planar coil. The planar coil of the sensor stator includes an SIN phase coil and a COS phase coil each having an annular ring shape, and a rotary transformer coil placed radially inside of a region where both the coils are provided. The rotary transformer coil includes two connecting wires to connect to an external circuit, the two connecting wires being arranged to extend across the coils. The two connecting wires are arranged one above the other in their portions that extend across the coils while an insulating film is interposed between the connecting wires. 1. An angle sensor including:a sensor rotor having a main surface formed with a planar coil, the sensor rotor being attached to a rotary shaft and; anda sensor stator having a main surface formed with a planar coil, the sensor stator being placed so that its main surface faces the main surface of the sensor rotor with a gap therefrom,the planar coil of the sensor stator including an SIN phase coil and a COS phase coil each having an annular ring shape, and a rotary transformer coil placed radially inside of a region where the SIN phase coil and the COS phase coil are provided,the rotary transformer coil including two connecting wires to be connected to an external circuit, the two connecting wires being placed to extend across the SIN phase coil and the COS phase coil,wherein the two connecting wires of the rotary transformer coil are placed so that at least portions extending across the SIN phase coil and the COS phase coil overlap one above the other.2. The angle sensor according to claim 1 , wherein the two connecting wires are placed one above the other while an insulating film is interposed therebetween.3. The angle sensor according to claim 2 , whereinthe SIN phase coil includes a connecting wire placed on an outer circumference and a pair of ...

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Номер записи: 88
26-12-2013 дата публикации

SHIFT RAIL TRANSMISSION POSITION SENSING

Номер: US20130345941A1
Автор: Anderson Ken R., Fritz Todd William, Katrak Kerfegar Khurshed, Kodela Naresh Kumar, Manyala John, McKenzie Ian Daniel, Pollack Christopher, Zuppann Richard Earl
Принадлежит: EATON CORPORATION

Receiving sensor data related to position of a gear in a transmission, the sensor data including data from a first sensor and data from a second sensor; determining a first indicated position of the gear from the data from the first sensor; determining a second indicated position of the gear from the data from the second sensor; comparing the first indicated position to the second indicated position; and determining based on the comparison a gear engagement status of the gear. 1. A method , comprising:receiving sensor data related to position of a gear in a transmission, the sensor data including data from a first sensor and data from a second sensor;determining a first indicated position of the gear from the data from the first sensor;determining a second indicated position of the gear from the data from the second sensor;comparing, in a computing device, the first indicated position to the second indicated position;determining based on the comparison a gear engagement status of the gear.2. The method of claim 1 , wherein the first sensor and the second sensor are attached to a shift rail in a shift rail transmission.3. The method of claim 2 , wherein the first sensor and the second sensor are Hall Effect sensors that generate an output when passing through a magnetic field and wherein the output is indicative of field strength and varies according to proximity of the sensors to magnets attached to the transmission.4. The method of claim 3 , wherein each magnet is attached to a steel plate.5. The method of claim 3 , wherein there are two magnets of opposite polarity.6. The method of claim 2 , wherein the gear is a first gear of a plurality of gears claim 2 , and wherein the shift rail moves a gear engagement element to selectively engage the first gear at a first end of the shift rail travel path or to engage a second gear of the plurality of gears at a second end of the shift rail travel path.7. The method of claim 6 , wherein the first sensor is situated to ...

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Номер записи: 89
02-01-2014 дата публикации

RESOLVER AND MULTIPLE-ROTATION DETECTOR

Номер: US20140002064A1
Автор: Kawamura Soichi, Shibata Shinji, Yura Motozumi
Принадлежит:

A stator includes: a core formed by laminating magnetic steel sheets; and an excitation coil and a detection coil which are wound around teeth provided at the core. The core includes a peripheral section which is disposed to surround the rotor and a detection section which is disposed at the interior of the peripheral section and has the teeth. When the magnetic steel sheets are laminated, each of the magnetic steel sheets forming the core includes a portion which constitutes the peripheral section and a portion which constitutes the detection section. The detection section is substantially U-shaped, and both sides of the U-shape become a pair of teeth which form one phase. A base portion of the substantially U-shape of the detection section connects. with the peripheral section, and gaps are provided between the peripheral section and a part of the base portion which is the root of the teeth. 1. A resolver comprising:a rotor which rotates; anda stator which is disposed on a periphery of the rotor, the stator including a core which is formed by laminating magnetic steel sheets and an excitation coil and a detection coil which are wound around teeth provided on the core,wherein the core has a peripheral section which is disposed so as to surround the rotor and a detection section which is disposed at the interior of the peripheral section and has the teeth,when the magnetic steel sheets are laminated, each of the laminated magnetic steel sheets includes a portion which constitutes the peripheral section and a portion which constitutes the detection section, andthe detection section is substantially U-shaped, and both sides of the U-shape constitute a pair of teeth which form one phase, a base portion of the substantially U-shape of the detection section connects with the peripheral section, and gaps are provided between the peripheral section and a part of the base portion which is the root of the teeth.2. A multiple-rotation detector having the plurality of ...

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Номер записи: 90
02-01-2014 дата публикации

Encoder

Номер: US20140002065A1
Автор: GUSTAFSSON Fredrik, Kjellqvist Lars Peter Johan
Принадлежит:

An encoder is configured for detection of rotational movement of a rotatable shaft in relation to a part of a machine, and a method is provided for generating a reference signal by an encoder. 1. An encoder for detection of rotational movement of a rotatable shaft in relation to a part of a machine , comprising:a scale device adapted to attach to a circumference of the shaft, the scale device having a width and a length and including a first magnetic scale pattern having a plurality of magnetic pole elements provided with a first predetermined division in a direction of the length adapted to generate a first magnetic field pattern at a first distance from a surface of the scale device, the scale device including at least one gap between ends of the first magnetic scale pattern; and a housing;', 'a first output terminal adapted to provide an encoder output signal indicative of a relative change in position between the signal generator and the scale device;', 'a second output terminal adapted to provide a reference signal indicative of a rotational position of the shaft;', 'a first magneto-electric transducer head having a first magneto-electric transducer adapted to generate a first electric signal in response to detection of the magnetic field pattern so that the first electric signal varies periodically in dependence on the first magnetic field pattern such that the variation exhibits a first wavelength that depends on the first predetermined division when the first magneto-electric transducer moves along the first magnetic scale pattern;', 'a second magneto-electric transducer head having a second magneto-electric transducer adapted to generate a second electric signal in response to detection of the first magnetic field pattern so that the second electric signal varies periodically in dependence on the first magnetic field pattern such that the variation exhibits the first wavelength dependent on the first predetermined division when the second magneto-electric ...

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Номер записи: 91
09-01-2014 дата публикации

ENCODER AND MOTOR DEVICE

Номер: US20140009043A1
Автор: WATANABE Atsufumi
Принадлежит: KABUSHIKI KAISHA YASKAWA DENKI

An encoder includes a rotary disc, a magnetic detection mechanism, an optical detection mechanism, a first detection signal generator, a second detection signal generator, and a multiple turn detector. The magnetic detection mechanism is to magnetically detect rotation of the rotary disc. The optical detection mechanism is to optically detect the rotation of the rotary disc. The first detection signal generator is configured to generate a first detection signal based on an output from the magnetic detection mechanism. The second detection signal generator is configured to generate a second detection signal having a predetermined phase difference from the first detection signal based on an output from the optical detection mechanism. The multiple turn detector is configured to detect a multiple turning amount of the rotary disc based on the first and second detection signals. 1. An encoder comprising:a rotary disc;a magnetic detection mechanism to magnetically detect rotation of the rotary disc;an optical detection mechanism to optically detect the rotation of the rotary disc;a first detection signal generator configured to generate a first detection signal based on an output from the magnetic detection mechanism;a second detection signal generator configured to generate a second detection signal having a predetermined phase difference from the first detection signal based on an output from the optical detection mechanism; anda multiple turn detector configured to detect a multiple turning amount of the rotary disc based on the first and second detection signals.2. The encoder of claim 1 , further comprising:an illumination controller to control a light emitting element of the optical detection mechanism,wherein the illumination controller controls the light emitting element to emit light for a predetermined period of time from a timing at which a level of the first detection signal changes, if a power source for the encoder is switched to a backup power source, ...

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Номер записи: 92
16-01-2014 дата публикации

Absolute encoder device and motor

Номер: US20140015384A1
Автор: Masayuki Someya, Sakao OZEKI, Yoshio HIRASAWA
Принадлежит: Oriental Motor Co Ltd

The present invention provides an absolute encoder device, including: a permanent magnet including a first magnetic pattern (bipolar) and a second magnetic pattern (multipolar); a first magnetic sensor for detecting a magnetic field of the first magnetic pattern; a second magnetic sensor for detecting a magnetic field of the second magnetic pattern; and a signal processing circuit for calculating an absolute rotation angle of a rotation shaft based on output signals of the first and second magnetic sensors. The first and second magnetic sensors and the signal processing circuit are fixed to a single substrate. The first magnetic pattern is formed on a plane extending in a direction crossing an axial direction inside the permanent magnet, and the second magnetic pattern is formed on an outer peripheral surface of the permanent magnet.

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Номер записи: 93
23-01-2014 дата публикации

MAGNETIC FIELD SENSOR

Номер: US20140021941A1
Автор: RUIGROK Jacobus Josephus Maria, STEGELMANN Joerg, VAN VELDHOVEN Robert Hendrikus Margaretha
Принадлежит: NXP B.V.

A magnetic field sensor assembly for measuring an angular direction of a sensed magnetic field relative to the assembly is disclosed. The sensor assembly includes a sensor of a first type configured to sense an orientation of the sensed magnetic field, a sensor of a second type configured to measure an orientation and a direction of the sensed magnetic field and processing circuitry connected to each of the magnetic field sensors. The processing circuitry being configured to process output signals from the sensor of the first type to determine an uncorrected sensed magnetic field angle and to apply an offset angle to the uncorrected magnetic field angle dependent on a logical combination of signs of output signals from the sensors of the first and second types. 1. A magnetic field sensor assembly for configured to measure an angular direction of a sensed magnetic field relative to the assembly , the sensor assembly comprising:a sensor of a first type configured to sense at least one of an orientation and a direction of the sensed magnetic field;a sensor of a second type configured to measure only a sign or interval of the sensed magnetic field, wherein the sensor; andprocessing circuitry connected to each of the magnetic field sensors, the processing circuitry being configured to process output signals from the sensor of the first type to determine an uncorrected sensed magnetic field angle and to apply an offset angle to the uncorrected magnetic field angle dependent on a logical combination of signs of output signals from the sensors of the first and second types.2. The magnetic field sensor of claim 1 , wherein the sensor of the first type comprises first and second sensor bridges having magnetic field sensing axes oriented at an angle relative to each other.3. The magnetic field sensor of claim 2 , wherein the first and second sensor bridges each comprise one or more magnetoresistive elements.4. The magnetic field sensor of wherein the first and second sensor ...

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Номер записи: 94
23-01-2014 дата публикации

Magnetic sensor system

Номер: US20140021943A1
Автор: Hiraku Hirabayashi, Kazuya Watanabe
Принадлежит: TDK Corp

A magnetic sensor system includes a magnetic field generation unit for generating a target magnetic field and a magnetic sensor for detecting the target magnetic field, and is selectable between an operating state and a non-operating state. The magnetic sensor has a magnetic detection element including a magnetic layer whose magnetization direction varies according to the direction of the target magnetic field in a reference position. When in the operating state, the direction of the target magnetic field in the reference position varies when viewed from the magnetic sensor. When in the non-operating state, the direction of the target magnetic field in the reference position does not vary when viewed from the magnetic sensor and the magnetization direction of the magnetic layer is pinned in a first direction. The magnetic layer has an induced magnetic anisotropy that is imparted in advance to the magnetic layer.

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Номер записи: 95
23-01-2014 дата публикации

METHOD FOR PRODUCING A SENSOR UNIT, SENSOR UNIT AND INSTRUMENTED BEARING COMPRISING SUCH A SENSOR UNIT

Номер: US20140021944A1
Автор: Amerongen Gertjan van, Niarfeix Francois
Принадлежит: AKTIEBOLAGET SKF

A method of producing a sensor unit for sensing the angular position of a rotatable element with respect to a fixed element, providing an encoder element fastened to the rotatable element, adapted to generate magnetic field variations as a function of its angular position, and a sensing element fastened to the fixed element, adapted to sense the magnetic field variations. The sensing element is mounted on and connected to a printed circuit board mounted in a shielding casing fastened with the fixed element. The method further comprises a step consisting in earthing the shielding casing by electrically connecting it to a load discharging device of the printed circuit board. 1. A method for producing a sensor unit for sensing the angular position of a rotatable element with respect to a fixed element , having an encoder element rotatably fastened to element , adapted to generate magnetic field variations as a function of its angular position , and a sensing element fastened to the fixed element , adapted to sense the magnetic field variations , the sensing element being mounted on and connected to a printed circuit board mounted in a shielding casing fastened to the fixed element , the method comprising the step of earthing the shielding casing by electrically connecting it to a load discharging device of the printed circuit board.2. The method according to claim 1 , wherein the shielding casing is connected to the load discharging device of the printed circuit board by creating at least one protruding element on the shielding casing on at least one point aligned with at least one contact pad of the load discharging device.3. The method according to claim 2 , wherein each protruding element is created by stamping a bottom wall of the shielding casing.4. The method according to claim 3 , wherein the shielding casing is connected to the load discharging device of the printed circuit board by providing the load discharging device with at least one protruding contact pad ...

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Номер записи: 96
30-01-2014 дата публикации

SENSOR FOR MEASURING TILT ANGLE BASED ON ELECTRONIC TEXTILE AND METHOD THEREOF

Номер: US20140028291A1
Автор: Gilliland Scott M., LEE Hyung Sun, SHIN Hyung Cheol, Starner Thad E., Zeagler Clint
Принадлежит:

Disclosed are a sensor for measuring a tilt angle based on electronic textile according to the present invention and a method thereof. A sensor for measuring a tilt angle based on electronic textile according to the present invention includes a plurality of textile electrodes disposed at predetermined uniform intervals on a textile surface; a textile conductive wire of which one end is connected to a center between the plurality of textile electrodes; and a metal bead connected to another end of the textile conductive wire to thereby be connected to the textile surface. 1. A sensor for measuring a tilt angle based on electronic textile , comprising:a plurality of textile electrodes disposed at predetermined uniform intervals on a textile surface;a textile conductive wire of which one end is connected to a center between the plurality of textile electrodes; anda metal bead connected to another end of the textile conductive wire to thereby be connected to the textile surface.2. The sensor of claim 1 , wherein the plurality of textile electrodes is disposed to be mutually point symmetric based on a point on the textile surface at which the metal bead is connected.3. The sensor of claim 1 , wherein the plurality of textile electrodes is disposed to be at least four so that the number of the plurality of textile electrodes is a multiple of “two”.4. The sensor of claim 1 , wherein the textile conductive wire is formed as a twisted pair cable claim 1 , one conductive wire constituting the twisted pair cable is connected to the metal bead claim 1 , and the other conductive wire is connected to a point on the textile surface at which the metal bead is connected.5. The sensor of claim 4 , wherein the twisted pair cable is wound so that the other conductive wire is not overlapped with the one conductive wire based on the one conductive wire.6. The sensor of claim 1 , further comprising:a measurement means to calculate a tilt angle of the metal bead using capacitance between ...

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Номер записи: 97
30-01-2014 дата публикации

Encoder element and method for production thereof

Номер: US20140028297A1
Автор: Dietmar Uhlenbrock, Helmut Schneider, Martin Maier, Nikolaus Hautmann, Ralf Diekmann
Принадлежит: ROBERT BOSCH GMBH

A method for producing an encoder element having a base body and a magnetic plastics element includes providing the base body and mixing a plastics base material with a magnetic or magnetizable filler to form an injection-molding material. The method also includes spraying the injection-molding material onto the base body so that a material-bonding, direct connection is produced between the base body and the sprayed-on plastics element. The method also includes magnetizing the sprayed-on plastics element.

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Номер записи: 98
30-01-2014 дата публикации

MAGNETIC FIELD ANGULAR SENSOR AND SENSING METHOD

Номер: US20140028299A1
Автор: VAN VELDHOVEN Robert Hendrikus Margaretha, Zieren Victor
Принадлежит: NXP B.V.

A magnetoresistive angular sensing method is disclosed. In a first mode, a first dc external magnetic field in a predetermined direction is applied to an angular sensor arrangement in which the external magnetic field dominates over a magnetic field generated by an input device an angular position of which is to be sensed. In a second mode, a second external magnetic field is applied to the angular sensor. Outputs of the angular sensor arrangement in the two modes are processed to determine an angular orientation of the input device with offset voltage compensation. 18-. (canceled)9. A magnetoresistive angular sensing method , comprising:in a first mode, applying a first dc external magnetic field in a predetermined direction to an angular sensor arrangement, in which the external magnetic field dominates over a magnetic field generated by an input device an angular position of which is to be sensed;in a second mode, applying a second, external magnetic field to the angular sensor; andprocessing outputs of the angular sensor arrangement in the two modes to determine an angular orientation of the input device with offset voltage compensation.10. A method as claimed in claim 9 , wherein the angular sensor arrangement comprises first and second angular sensor circuits.11. A method as claimed in claim 10 , wherein the angular sensor arrangement comprises first and second bridge circuits oriented at 45 degrees with respect to each other.12. A method as claimed in claim 9 , wherein the external magnetic field applied in the second mode is at least 10 times smaller than in the first mode.13. A method as claimed in claim 12 , wherein the external magnetic field applied in the second mode is zero.14. A method as claimed in claim 9 , wherein the external field applied in the first mode is at least 10 times larger than the magnetic field generated by the input device. The invention relates to magnetic field sensors and sensing methods. In particular, the invention relates to ...

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Номер записи: 99
06-02-2014 дата публикации

POSITION SENSOR, IN PARTICULAR FOR DETERMINING THE POSITION OF A ROTOR OF A PLANAR DIRECT DRIVE

Номер: US20140035567A1
Автор: Wendorff Eckhard
Принадлежит: SCHAEFFLER TECHNOLOGIES AG & CO. KG

A position sensor in particular for determining the position of a rotor of a planar direct drive, including a pan- or box-shaped, softmagnetic base body (), at least one permanent magnet () arranged within the base body (), wherein the north pole-south pole axis of the permanent magnet () extends perpendicularly to an open base surface of the base body (), poles () having a tooth structure () and being arranged on the permanent magnet () in two rows parallel to the measurement direction, wherein the tooth flanks of the tooth structure () run parallel to a plane extending through the north pole-south pole axis of the permanent magnet (), and further comprising sensors () arranged between the poles () for determining the field strength and/or the magnetic flux. 17-. (canceled)8. A position sensor comprising:a pan-shaped or box-shaped soft magnetic base body having an open base surface;at least one permanent magnet situated within the base body, a north pole-south pole axis of the permanent magnet running perpendicularly to the open base surface;poles having a tooth structure situated on the permanent magnet in two rows parallel to a measuring direction, tooth flanks of the tooth structure running parallel to a plane encompassing the north pole-south pole axis of the permanent magnet; andsensors for ascertaining at least one of a field strength and a magnetic flux situated between the poles.9. The position sensor as recited in wherein the poles include six poles claim 8 , the tooth structure of the poles located in a first row being offset by a quarter period claim 8 , and the tooth structure of the poles situated in a second row being offset by a half period in relation to the first row.10. The position sensor as recited in wherein the permanent magnet is divided into multiple permanent magnet sections distributed at regular intervals on the base body claim 9 , each permanent magnet section aligned with one of the poles in the axial direction.11. The position sensor ...

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Номер записи: 100