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Небесная энциклопедия

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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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 45. Отображено 45.
25-02-2015 дата публикации

Noise testing method for multi-phase alternating-current permanent magnet motor with even number of units

Номер: CN104375083A
Принадлежит:

The invention discloses a noise testing method for a multi-phase alternating-current permanent magnet motor with an even number of units, and belongs to the technical field of motor testing. The noise testing method aims to solve the problem that accurate testing of noise of a motor system is affected due to the fact that load equipment needs to be additionally arranged when noise of the multi-phase permanent magnet synchronous motor with the even number of units is tested. When the noise of the motor is tested, one half of the N independently running units of the motor runs electrically to serve as an input power end, the other half of the N independently running units of the motor runs in a power-generating mode to serve as a power output end, and therefore on the condition of simulating the load of the motor, it is guaranteed that all the units of the motor run. The noise of the motor in a certain load state is tested equivalently by testing the noise of the motor and relevant motor ...

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24-06-2015 дата публикации

Radial magnetic circuit multistage multipole equal tooth width decelerating type motor protector

Номер: CN104734399A
Принадлежит:

The invention discloses a radial magnetic circuit multistage multipole equal tooth width decelerating type motor protector, and belongs to the technical field of motor protection equipment. The radial magnetic circuit multistage multipole equal tooth width decelerating type motor protector aims at solving the problems that a motor protector does not exist at present, therefore, the usage performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. Multiple disc-shaped permanent magnets are fixed in a non-magnetism stainless steel sleeve, circular magnetic conductive stainless steel baffles are fixed between every two adjacent permanent magnets and on the outer sides of the two permanent magnets located at the two ends, and a magnetic conductive stainless steel sleeve is fixed in an installing hole of each disc-shaped permanent magnet. When the radial magnetic circuit multistage multipole equal tooth width decelerating ...

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10-06-2015 дата публикации

Axial magnetic circuit multistage multi-pole tooth-space-omitted deceleration type motor protector

Номер: CN104702024A
Принадлежит:

The invention discloses an axial magnetic circuit multistage multi-pole tooth-space-omitted deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. In each of axial magnetic circuit multi-pole tooth-space-omitted deceleration type motor protectors, multiple permanent magnets are all of a disc shape; the multiple disc-shaped permanent magnets are fixed into a nonmagnetic stainless steel sleeve in the axial direction of the nonmagnetic stainless steel sleeve in parallel; magnetic circuits of the multiple disc-shaped permanent magnets are all arranged in the axial direction, and the polarities of every two adjacent disc-shaped permanent magnets are oppositely set; circular magnetic stainless steel baffles are fixedly arranged between every two adjacent ...

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05-03-2014 дата публикации

Total-excitation coarse-fine coupling magnetism-resisting-type rotary transformer with redundancy winding

Номер: CN103617881A
Принадлежит:

The invention discloses a total-excitation coarse-fine coupling magnetism-resisting-type rotary transformer with a redundancy winding, and relates to the technical field of total-excitation coarse-fine coupling magnetism-resisting-type rotary transformers with redundancy windings. The total-excitation coarse-fine coupling magnetism-resisting-type rotary transformer aims at solving the problems that an existing rotary transformer used for measuring angles is complex in structure, large in error and the like. According to the winding rule of the total-excitation coarse-fine coupling magnetism-resisting-type rotary transformer, every N adjacent upper teeth and corresponding N lower teeth on a stator are used as a set of winding teeth in sequence to form 4P sets of winding teeth, a first fine machine sinusoidal signal winding, a second fine machine sinusoidal signal winding, a first fine machine cosine signal winding and a second fine machine cosine signal winding are respectively wound around ...

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26-08-2015 дата публикации

Novel electrical excitation brake

Номер: CN104868797A
Принадлежит:

A novel electrical excitation brake is disclosed. The invention relates to the novel electrical excitation brake. A brake uses a contact friction principle to generate torque. Because a friction disk is used, the service life of the brake is shortened so that braking is failed and usage safety of surrounding equipment is influenced. A motor output shaft (4) is provided with a rotor (3) which shares an axle with the motor output shaft. The rotor (3) is arranged in an internal portion of two stators (2). The rotor (3) and the two stators (2) are coaxially arranged. An annular excitation coil (1) which is winded on an annular coil rack is arranged between the two stators (2). A winding direction of the annular excitation coil (1) is vertical to an axial direction of the motor output shaft (4). The two stators (2) and the annular excitation coil (1) are arranged in a motor shell (5). One side of the motor shell (5) is detachably connected to a rear cover shell (6). The invention discloses the ...

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10-06-2015 дата публикации

Axial magnetic circuit multistage monopole tooth-width-equal deceleration type motor protector

Номер: CN104702028A
Принадлежит:

The invention discloses an axial magnetic circuit multistage monopole tooth-width-equal deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. In each of axial magnetic circuit monopole tooth-width-equal deceleration type motor protectors, a disc-shaped permanent magnet is fixedly mounted in a nonmagnetic stainless steel sleeve; two circular magnetic stainless steel baffles are fixed to the two ends in the nonmagnetic stainless steel sleeve; a magnetic stainless steel sleeve is fixedly arranged in an installation hole of the disc-shaped permanent magnet; the magnetic stainless steel sleeve and axle holes of the two circular magnetic stainless steel baffles are coaxially arranged; the inner peripheral surface of the magnetic stainless steel sleeve ...

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24-06-2015 дата публикации

Radial magnetic circuit multistage monopole special-shaped slotless decelerating type motor protector

Номер: CN104734398A
Принадлежит:

The invention discloses a radial magnetic circuit multistage monopole special-shaped slotless decelerating type motor protector, and belongs to the technical field of motor protection equipment. The radial magnetic circuit monopole slotless decelerating type motor protector aims at solving the problems that a motor protector does not exist at present, therefore, the usage performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A disc-shaped permanent magnet is fixedly installed in a non-magnetism stainless steel sleeve, a first circular magnetic conductive stainless steel baffle and a second circular magnetic conductive stainless steel baffle are fixed in the non-magnetism stainless steel sleeve, the hole diameter of a shaft hole of the first circular magnetic conductive stainless steel baffle is smaller than the hole diameter of a shaft hole of the second circular magnetic conductive stainless steel baffle, a magnetic ...

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10-06-2015 дата публикации

Radial magnetic circuit multistage multiple-pole unequal-tooth-width speed reduction type motor protector

Номер: CN104702032A
Принадлежит:

The invention provides a radial magnetic circuit multistage multiple-pole unequal-tooth-width speed reduction type motor protector and belongs to the technical field of motor protection devices. The radial magnetic circuit multistage multiple-pole unequal-tooth-width speed reduction type motor protector aims at solving the problem that at present, due to the fact that no motor protector exists, the using performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. Multiple disk-shaped permanent magnets are fixedly installed in a non-magnetic stainless steel sleeve, a round magnetic stainless steel baffle is fixed between every two adjacent permanent magnets, round magnetic stainless steel baffles are respectively fixed to the outer sides of the two permanent magnets located at two ends, and a magnetic stainless steel sleeve is fixed in an installing hole formed in each disk-shaped permanent magnet. When the radial magnetic ...

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10-09-2014 дата публикации

Even unit alternating-current permanent magnet motor torque ripple testing method

Номер: CN104034464A
Принадлежит:

The invention discloses an even unit alternating-current permanent magnet motor torque ripple testing method, and belongs to the technical field of motor testing. In order to solve the problem that at present, when the torque ripples of a multi-phase even unit permanent magnet synchronous motor are tested through a direct measuring method, a load device needs to be additionally arranged, by means of the structural characteristics of windings of even units of the multi-phase even unit permanent magnet synchronous motor, when the torque ripples of the motor are tested, part of the units of the motor can run in an electric mode to serve as an input power end, and part of the units of the motor can run in an electricity generation mode to serve as an output power end, and therefore running of all the units of the motor is ensured under the condition of simulating motor loads. By testing the torque ripples and related motor parameters under this condition, the curve of the torque ripples under ...

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08-10-2014 дата публикации

Odd-number unit alternating current permanent magnet motor torque fluctuation testing method

Номер: CN104090235A
Принадлежит:

The invention provides an odd-number unit alternating current permanent magnet motor torque fluctuation testing method, belongs to the technical field of motor testing and aim at solving the problem that an additional load device is needed when torque fluctuation of a multiphase odd-number unit permanent magnet synchronous motor is tested by adopting a direct measurement method at present. The method can utilize a part of unit motor running electrically as an input power end when testing the motor torque fluctuation by utilizing a winding structure characteristic of an odd-number unit of the multiphase odd-number unit permanent magnet synchronous motor, the part of unit motor running in a generating mode serves as an output power end, and accordingly running of all of units of the motor is ensured under the condition that motor load is simulated. A torque fluctuation curve is equivalently tested in a certain load state by testing the torque fluctuation in the state and related motor parameters ...

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10-06-2015 дата публикации

Axial magnetic circuit monopole multistage tooth-space-omitted deceleration type motor protector

Номер: CN104702034A
Принадлежит:

The invention discloses an axial magnetic circuit monopole multistage tooth-space-omitted deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. In each of axial magnetic circuit monopole tooth-space-omitted deceleration type motor protectors, a permanent magnet is of a disc shape, the disc-shaped permanent magnet is fixedly mounted in a nonmagnetic stainless steel sleeve, a magnetic circuit of the disc-shaped permanent magnet is arranged in the axial direction, two circular magnetic stainless steel baffles are fixed to the two ends in the nonmagnetic stainless steel sleeve, the two circular magnetic stainless steel baffles are attached to the two end faces of the disc-shaped permanent magnet, axle holes are formed in the middle of the two circular ...

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01-07-2015 дата публикации

Mixed-magnetic-circuit, permanent-magnet-synchronous and inner-rotor motor

Номер: CN104753287A
Принадлежит:

The invention relates to a mixed-magnetic-circuit, permanent-magnet-synchronous and inner-rotor motor, belongs to the technical field of permanent magnet motors, and aims to solve the problem that the eddy-current loss of the iron core of an existing permanent magnet motor is increased rapidly when the motor increases power density by increasing rotation speed and pole pair number, and motor efficiency increasing is limited. The mixed-magnetic-circuit, permanent-magnet-synchronous and inner-rotor motor is characterized in that a winding is embedded into each rectangular annular groove of the motor, and a solid ring is made of soft magnetic composite (SMC); a first magnetic conduction lateral disc cover is disposed on the left port of a magnetic conduction inner ring, a second magnetic conduction lateral disc cover is disposed on the right port of the magnetic conduction inner ring, the polarity of the magnetic poles of the magnetic steel on the first magnetic conduction lateral disc cover ...

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10-09-2014 дата публикации

Three-phase three-unit permanent magnet type tracking friction vibration actuator

Номер: CN104038013A
Принадлежит:

The invention provides a three-phase three-unit permanent magnet type tracking friction vibration actuator, and belongs to the technical field of tracking friction vibration actuators. The upper end of a stator lower end cover spring is provided with a stator iron core support, the upper end of the stator iron core support is provided with a stator iron core, a stator winding is arranged on the stator iron core, the upper portion of the stator iron core is provided with a rotor permanent magnet, and the rotor permanent magnet is fixedly connected with a rotor central post. The stator winding is composed of three winding bodies, each winding body independently forms one phase, and the phase difference is 120 degrees. By the adoption of the three-phase three-unit permanent magnet type tracking friction vibration actuator free of electromagnetic coupling, welding quality can be effectively improved, and meanwhile the welding speed and quality can be controlled by changing the voltage amplitude ...

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20-07-2011 дата публикации

Pole mechanical fixing structure of permanent magnet motor

Номер: CN0102130554A
Принадлежит:

The invention discloses a pole mechanical fixing structure of a permanent magnet motor, belonging to the technical field of motors and solving the problem of unreliable positioning of a rotor magnetic pole of an inner rotor permanent magnet synchronous motor. A rotor yoke of the pole mechanical fixing structure is sleeved on the surface of an excircle of a rotating shaft, two circular rotor pressing plates are respectively fixedly connected to two ends of the rotor yoke and form a groove together with the outer surface of the rotor yoke, P magnetic poles are uniformly distributed in the groove along the circumference direction of the rotor, P limit pins and P pairs of convex pins are respectively punched in the surfaces of outer rings of the circular rotor pressing plates, the P limit pins are uniformly distributed on the outer circumferences of the circular rotor pressing plates, the P limit pins on the two circular rotor pressing plates are oppositely arranged, one pair of axially opposite ...

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10-06-2015 дата публикации

Axial magnetic circuit multistage multi-pole tooth-width-unequal deceleration type motor protector

Номер: CN104702029A
Принадлежит:

The invention discloses an axial magnetic circuit multistage multi-pole tooth-width-unequal deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. In each of axial magnetic circuit multi-pole tooth-width-unequal deceleration type motor protectors, multiple disc-shaped permanent magnets are fixedly arranged in a nonmagnetic stainless steel sleeve; circular magnetic stainless steel baffles are fixedly arranged between every two adjacent disc-shaped permanent magnets and outside the two disc-shaped permanent magnets located on the two ends; a magnetic stainless steel sleeve is fixed into an installation hole of each disc-shaped permanent magnet. When the axial magnetic circuit multistage multi-pole tooth-width-unequal deceleration type motor protector ...

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10-06-2015 дата публикации

Radial magnetic circuit monopole special-shaped tooth-groove-free speed reduction type motor protector

Номер: CN104702035A
Принадлежит:

The invention provides a radial magnetic circuit monopole special-shaped tooth-groove-free speed reduction type motor protector and belongs to the technical field of motor protection devices. The radial magnetic circuit monopole special-shaped tooth-groove-free speed reduction type motor protector aims at solving the problem that at present, due to the fact that no motor protector exists, the using performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A disk-shaped permanent magnet is fixedly installed in a non-magnetic stainless steel sleeve, a first round magnetic stainless steel baffle and a second round magnetic stainless steel baffle are fixed in the non-magnetic stainless steel sleeve, the first round magnetic stainless steel baffle is smaller than the second round magnetic stainless steel baffle in shaft hole diameter, a magnetic stainless steel sleeve is fixed in an installing hole formed in the disk-shaped ...

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05-03-2014 дата публикации

Outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer with redundant winding

Номер: CN103617880A
Принадлежит:

The invention discloses an outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer with a redundant winding and relates to the technical field of outer rotor axial magnetic circuit multi-pole reluctance type rotary transformers with redundant windings. The outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer with the redundant winding aims at solving the problem that a current rotary transformer used for measuring angles is complicated in structure and large in error. One end face of a first ring of the outer rotor axial magnetic circuit multi-pole reluctance type rotary transformer is in butt joint with one end face of a second ring, and the other end face of the second ring is in butt joint with one end face of a third ring. The second ring is a magnetism conduction ring in the shape of a sinusoidal waveform, and a first sinusoidal signal winding, a second sinusoidal signal winding, a first cosine signal winding and a second cosine ...

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26-08-2015 дата публикации

Hybrid excitation type brake with velocity measurement function

Номер: CN104868693A
Принадлежит:

A hybrid excitation type brake with a velocity measurement function is disclosed. The invention relates to the hybrid excitation type brake with the velocity measurement function. Because a friction disk is used, the service life of the brake is shortened so that braking is failed and usage safety of surrounding equipment is influenced. A motor output shaft is provided with a rotor which shares an axle with the motor output shaft. An outer side surface of the rotor is connected to two permanent magnet steel. The rotor is arranged in an internal portion of two stators. And the rotor and the two stators are arranged coaxially. The two stators and the two permanent magnet steel are in a one-to-one correspondence relationship. An annular exciting coil which is winded on an annular coil rack is arranged between the two stators. A winding direction of the annular exciting coil is vertical to an axial direction of the motor output shaft. The two stators and the annular exciting coil are arranged ...

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10-06-2015 дата публикации

Axial magnetic circuit monopole tooth-width-unequal deceleration type motor protector

Номер: CN104702019A
Принадлежит:

The invention discloses an axial magnetic circuit monopole tooth-width-unequal deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. A disc-shaped permanent magnet is fixedly mounted in a nonmagnetic stainless steel sleeve; two circular magnetic stainless steel baffles are fixed to the two ends of the nonmagnetic stainless steel sleeve; a magnetic stainless steel sleeve is fixedly arranged in an installation hole in the middle of the disc-shaped permanent magnet; the magnetic stainless steel sleeve and axle holes of the two circular magnetic stainless steel baffles are coaxially arranged; the inner peripheral surface of the magnetic stainless steel sleeve is provided with multiple teeth with unequal tooth widths in the axial direction by machining ...

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01-07-2015 дата публикации

Radio and axial hybrid magnetic circuit permanent-magnet synchronous-side rotor motor

Номер: CN104753291A
Принадлежит:

The invention discloses a radio and axial hybrid magnetic circuit permanent-magnet synchronous-side rotor motor and belongs to the technical field permanent-magnet motors with an aim to solve problems that improvement of motor efficiency is limited due to rapid increasing of eddy current loss of motor cores when power density of existing permanent-magnet motors are increased by increasing rotating speed and pair of poles. The radio and axial hybrid magnet circuit permanent-magnet synchronous-side rotor motor is characterized in that a winding is embedded in each rectangular ring groove, and a solid circular ring is made of soft magnetic composite (SMC); the outer circular edge of a magnetic-side wafer covers the left port of a magnetic outer circular ring, and the internal circular edge of the magnetic-side wafer covers the left port of a magnetic inner circular ring; magnetic poles of magnetic steel on the magnetic outer circular ring and the magnetic inner circular ring are identical ...

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10-06-2015 дата публикации

Radial magnetic circuit multistage multiple-pole tooth-groove-free speed reduction type motor protector

Номер: CN104702033A
Принадлежит:

The invention provides a radial magnetic circuit multistage multiple-pole tooth-groove-free speed reduction type motor protector and belongs to the technical field of motor protection devices. The radial magnetic circuit multistage multiple-pole tooth-groove-free speed reduction type motor protector aims at solving the problem that at present, due to the fact that no motor protector exists, the using performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. Multiple permanent magnets (3) are all disk-shaped, the multiple disk-shaped permanent magnets are parallelly fixed in a non-magnetic stainless steel sleeve in the axial direction of the non-magnetic stainless steel sleeve (1), magnetic circuits of the multiple disk-shaped permanent magnets are arranged in the radial direction, a round magnetic stainless steel baffle (2) is fixed between every two adjacent disk-shaped permanent magnets, round magnetic stainless ...

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24-06-2015 дата публикации

Radial magnetic circuit monopole unequal tooth width decelerating type motor protector

Номер: CN104734397A
Принадлежит:

The invention discloses a radial magnetic circuit monopole unequal tooth width decelerating type motor protector, and belongs to the technical field of motor protection equipment. The radial magnetic circuit monopole unequal tooth width decelerating type motor protector aims at solving the problems that a motor protector does not exist at present, therefore, the usage performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A disc-shaped permanent magnet is fixedly installed in a non-magnetism stainless steel sleeve, two circular magnetic conductive stainless steel baffles are fixed at the two ends in the non-magnetism stainless steel sleeve, a magnetic conductive stainless steel sleeve is fixed in an installing hole in the middle of the disc-shaped permanent magnet, the magnetic conductive stainless steel sleeve and shaft holes of the circular magnetic conductive stainless steel baffles are coaxially arranged, and ...

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10-06-2015 дата публикации

Radial magnetic circuit multistage multiple-pole special-shaped tooth-groove-free speed reduction type motor protector

Номер: CN104702021A
Принадлежит:

The invention provides a radial magnetic circuit multistage multiple-pole special-shaped tooth-groove-free speed reduction type motor protector and belongs to the technical field of motor protection devices. The radial magnetic circuit multistage multiple-pole special-shaped tooth-groove-free speed reduction type motor protector aims at solving the problem that at present, due to the fact that no motor protector exists, the using performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. Multiple disk-shaped permanent magnets are parallelly fixed in a non-magnetic stainless steel sleeve, a round magnetic stainless steel baffle is fixed between every two adjacent disk-shaped permanent magnet, round magnetic stainless steel baffles are respectively fixed to the outer sides of the two disk-shaped permanent magnets close to two ends in the non-magnetic stainless steel sleeve, magnetic stainless steel sleeves are fixed in ...

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26-08-2015 дата публикации

Outer-rotor electromagnetic brake

Номер: CN104868694A
Принадлежит:

An outer-rotor electromagnetic brake is disclosed. The invention relates to the outer-rotor electromagnetic brake. An electromagnetic brake is a contact-type brake which generates braking torque through an effect of a friction disc. The friction disc will be abrased after long time usage so that system reliability is reduced. An annular excitation coil (1) which is winded on an annular coil rack is arranged on an inner stator (3). A winding direction of the annular excitation coil (1) is vertical to a motor output shaft (4). An outer rotor (2) is arranged on the inner stator (3). A motor shell (5) is arranged on the outer rotor (2). The outer rotor (2) is arranged on the motor output shaft (4). A left side of the motor shell (5), a left side of the inner stator (3), a left side of the outer rotor (2) and the motor output shaft (4) are connected to a rear end cover (6) through screws (7). The invention relates to the electromagnetic brake.

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10-12-2014 дата публикации

Harmonic-wave eliminating type axial magnetic circuit multipolar rotating transformer and signal winding coiling method

Номер: CN104200968A
Принадлежит:

The invention discloses a harmonic-wave eliminating type axial magnetic circuit multipolar rotating transformer and a signal winding coiling method, belongs to the technical field of transformers and aims to solve problems that an existing multistage axial magnetic-resistance type rotating transformer is low in precision and is enlarged in side with increasing of the number of pole-pairs. An annular groove is machined in the inner annular surface of a stator and divides 2NP long stator teeth into 2NP upper stator teeth and 2NP lower stator teeth, and 2NP pairs of stator teeth are formed by the 2NP upper stator teeth and the 2NP lower stator teeth; a field winding is placed in the annular groove, and sine and cosine signal windings are wounded on the stator teeth in a layered manner; for the sine signal winding, a first group of neighboring N pairs of stator teeth are wounded along the counterclockwise direction by starting along the clockwise direction of the plane, the second group of ...

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15-06-2011 дата публикации

Structure for fixing magnetic poles of permanent magnet motor

Номер: CN0102097878A
Принадлежит:

The invention provides a structure for fixing the magnetic poles of a permanent magnet motor, belonging to the technical field of motors and solving the problem that the magnetic poles of the rotors of the inner rotor permanent magnet synchronous motors are positioned unstably. The structure comprises a rotating shaft and a rotor yoke, wherein the rotor yoke is sleeved on the excircle surface of the rotating shaft. The structure also comprises two circular ring-shaped rotor pressing plates, P-numbered magnetic poles and P-numbered positioning keys, wherein the two circular ring-shaped rotor pressing plates are respectively connected at the two ends of the rotor yoke fixedly and form grooves with the outer surface of the rotor yoke; the P-numbered positioning keys are uniformly distributed along the circumferential direction of the rotor and divide the grooves into P-numbered accommodating space along the axial direction of the rotor; and one magnetic pole is fixedly arranged in each accommodating ...

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10-06-2015 дата публикации

Axial magnetic circuit monopole tooth-space-omitted deceleration type motor protector

Номер: CN104702031A
Принадлежит:

The invention discloses an axial magnetic circuit monopole tooth-space-omitted deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. A permanent magnet (3) is of a disc shape; the disc-shaped permanent magnet (3) is fixedly mounted in a nonmagnetic stainless steel sleeve (1); a magnetic circuit of the disc-shaped permanent magnet (3) is arranged in the axial direction; two circular magnetic stainless steel baffles (2) are fixed to the two ends in a nonmagnetic stainless steel sleeve (1); the circular magnetic stainless steel baffles (2) are attached to the two end faces of the disc-shaped permanent magnet (3); axle holes are formed in the middle of the two circular magnetic stainless steel baffles (2) respectively; an axle hole is also formed in ...

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24-06-2015 дата публикации

Radial magnetic circuit monopole multistage slotless decelerating type motor protector

Номер: CN104734400A
Принадлежит:

The invention discloses a radial magnetic circuit monopole multistage slotless decelerating type motor protector, and belongs to the technical field of motor protection equipment. The radial magnetic circuit monopole multistage slotless decelerating type motor protector aims at solving the problems that a motor protector does not exist at present, therefore, the usage performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A permanent magnet is in the shape of a disc, the disc-shaped permanent magnet is fixedly installed in a non-magnetism stainless steel sleeve, magnetic circuits of the disc-shaped permanent magnet are arranged in the radial direction, two circular magnetic conductive stainless steel baffles are fixed at the two ends in the non-magnetism stainless steel sleeve, and the circular magnetic conductive stainless steel baffles are attached to the two end faces of the disc-shaped permanent magnet; the ...

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10-06-2015 дата публикации

Radial magnetic circuit monopole equal-tooth-width speed reduction type motor protector

Номер: CN104702027A
Принадлежит:

The invention provides a radial magnetic circuit monopole equal-tooth-width speed reduction type motor protector and belongs to the technical field of motor protection devices. The radial magnetic circuit monopole equal-tooth-width speed reduction type motor protector aims at solving the problem that at present, due to the fact that no motor protector exists, the using performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A disk-shaped permanent magnet is fixedly installed in a non-magnetic stainless steel sleeve, two round magnetic stainless steel baffles are fixed to two ends in the non-magnetic stainless steel sleeve, a magnetic stainless steel sleeve is fixed in an installing hole formed in the middle of the disk-shaped permanent magnet and is coaxial with shaft holes of the two round magnetic stainless steel baffles, and a plurality of equal-tooth-width teeth are machined on the inner circumferential face ...

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24-06-2015 дата публикации

Radial magnetic circuit monopole slotless decelerating type motor protector

Номер: CN104734401A
Принадлежит:

The invention discloses a radial magnetic circuit monopole slotless decelerating type motor protector, and belongs to the technical field of motor protection equipment. The radial magnetic circuit monopole slotless decelerating type motor protector aims at solving the problems that a motor protector does not exist at present, therefore, the usage performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A permanent magnet (3) is in the shape of a disc, the disc-shaped permanent magnet (3) is fixedly installed in a non-magnetism stainless steel sleeve (1), magnetic circuits of the disc-shaped permanent magnet (3) are arranged in the radial direction, two circular magnetic conductive stainless steel baffles (2) are fixed at the two ends in the non-magnetism stainless steel sleeve (1), and the circular magnetic conductive stainless steel baffles (2) are attached to the two end faces of the disc-shaped permanent magnet ...

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24-06-2015 дата публикации

Axial magnetic circuit multistage and multi-pole equal-tooth-width speed reducing type motor protector

Номер: CN104734396A
Принадлежит:

The invention provides an axial magnetic circuit multistage and multi-pole equal-tooth-width speed reducing type motor protector and belongs to the technical field of motor protecting equipment. The protector solves the problems that due to the fact that at present, a motor protector does not exist, the usability of a motor is poor, the service life of the motor is short, and the maintenance cost is increased. A plurality of disc-shaped permanent magnets are fixed into a non-magnetic stainless steel sleeve. A round magnetic stainless steel baffle is fixed between every two adjacent disc-shaped permanent magnets. Round magnetic stainless steel baffles are fixed to the outer sides of the disc-shaped permanent magnets located at the two ends. A magnetic stainless steel sleeve is fixed into an installing hole of each disc-shaped permanent magnet. In the using process, an output shaft of the motor penetrates out of a plurality of magnetic stainless steel sleeves of a plurality of axial magnetic ...

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25-02-2015 дата публикации

Noise testing method for multi-phase alternating-current permanent magnet motor with odd number of units

Номер: CN104375013A
Принадлежит:

The invention discloses a noise testing method for a multi-phase alternating-current permanent magnet motor with an odd number of units, and belongs to the technical field of motor testing. The noise testing method aims to solve the problem that accurate testing of noise of a motor system is affected due to the fact that load equipment needs to be additionally arranged when noise of the multi-phase permanent magnet synchronous motor with the odd number of units is tested. According to the method, in the N independently running units of the motor, N1 units run electrically to serve as an input power end, the other N2 units run in a power-generating mode to serve as a power output end, and the noise of the motor in the state is tested; and noise generated when any one unit runs electrically and the adjacent unit runs in the power-generating mode is tested according to a relevant motor parameter equivalent testing method; finally, noise generated when the motor runs in a no-load mode is tested ...

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10-06-2015 дата публикации

Axial magnetic circuit multistage monopole tooth-width-unequal deceleration type motor protector

Номер: CN104702026A
Принадлежит:

The invention discloses an axial magnetic circuit multistage monopole tooth-width-unequal deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. In each of axial magnetic circuit monopole tooth-width-unequal deceleration type motor protectors, a disc-shaped permanent magnet is fixedly mounted in a nonmagnetic stainless steel sleeve; two circular magnetic stainless steel baffles are fixed to the two ends in the nonmagnetic stainless steel sleeve; a magnetic stainless steel sleeve is fixedly arranged in an installation hole of the disc-shaped permanent magnet; the magnetic stainless steel sleeve and axle holes of the two circular magnetic stainless steel baffles are coaxially arranged; the inner peripheral surface of the magnetic stainless steel sleeve ...

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10-06-2015 дата публикации

Radial magnetic circuit multistage monopole equal-tooth-width speed reduction type motor protector

Номер: CN104702022A
Принадлежит:

The invention provides a radial magnetic circuit multistage monopole equal-tooth-width speed reduction type motor protector and belongs to the technical field of motor protection devices. The radial magnetic circuit multistage monopole equal-tooth-width speed reduction type motor protector aims at solving the problem that at present, due to the fact that no motor protector exists, the using performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A disk-shaped permanent magnet is fixedly installed in a non-magnetic stainless steel sleeve, two round magnetic stainless steel baffles are fixed to two ends in the non-magnetic stainless steel sleeve, a magnetic stainless steel sleeve is fixed in an installing hole formed in the disk-shaped permanent magnet and is coaxial with shaft holes of the two round magnetic stainless steel baffles, and a plurality of equal-tooth-width teeth are machined on the inner circumferential ...

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10-06-2015 дата публикации

Axial magnetic circuit multistage multi-pole special-shaped tooth-space-omitted deceleration type motor protector

Номер: CN104702030A
Принадлежит:

The invention discloses an axial magnetic circuit multistage multi-pole special-shaped tooth-space-omitted deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. In each of axial magnetic circuit multi-pole special-shaped tooth-space-omitted deceleration type motor protectors, multiple disc-shaped permanent magnets are fixed into a nonmagnetic stainless steel sleeve in parallel; circular magnetic stainless steel baffles are fixedly arranged between every two adjacent disc-shaped permanent magnets and outside the two disc-shaped permanent magnets close to the two ends in the nonmagnetic stainless steel sleeve; a magnetic stainless steel sleeve is fixedly arranged in an installation hole of each disc-shaped permanent magnet; the diameter of one end ...

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19-03-2014 дата публикации

Iron coreless permanent magnet limited angle motor

Номер: CN103647381A
Принадлежит:

The invention discloses an iron coreless permanent limited angle motor and relates to limited angle motors. The iron coreless permanent limited angle motor aims at solving the problems of low air-gap magnetic flux density, relatively low momentum density and relatively large inductance of an existing wound-rotor limited angle direct current torque motor and the problem of circulation current of a winding of a moving-coil limited angle motor of an ordinary radial magnetic circuit structure. A bearing seat is fixedly connected with the sealed end of a shell, the inner stator and the outer stator are fixed together, the motor shaft is arranged inside the bearing seat and the support through a bearing, the outer stator is arranged on the bearing seat in a sleeve mode, the outer circumference side surface and the inner circumference side surface of the inner stator and the outer stator are fixedly provided with inner permanent magnet steel and outer permanent magnet steel and form a closed magnetic ...

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26-03-2014 дата публикации

Non-magnetic yoke structure permanent magnet limited angle motor

Номер: CN103683769A
Принадлежит:

The invention discloses a non-magnetic yoke structure permanent magnet limited angle motor, relates to a limited angle motor, and aims to solve the problems of low air-gap flux density, small power density, large rotary inertia and slow response of an existing moving-iron limited angle direct current torque motor. Inner rotors and outer rotors are fixed together, a motor shaft is mounted in a bearing block through bearings, the bearing block is mounted in center holes of the outer rotors and fixedly connected with the outer rotors, a support is fixedly connected with the motor shaft, the inner rotors and the outer rotors are made of non-magnetic materials, outer permanent magnet steels are fixed on the side faces of the outer circumferences of the inner rotors, inner permanent magnet steels are fixed on the side faces of the inner circumferences of the outer rotors, frameworks are arranged among the inner permanent magnet steels and the outer permanent magnet steels, multi-group winding ...

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10-06-2015 дата публикации

Axial magnetic circuit multistage monopole special-shaped tooth-space-omitted deceleration type motor protector

Номер: CN104702023A
Принадлежит:

The invention discloses an axial magnetic circuit multistage monopole special-shaped tooth-space-omitted deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. In each of axial magnetic circuit monopole tooth-space-omitted deceleration type motor protectors, a disc-shaped permanent magnet is fixedly mounted in a nonmagnetic stainless steel sleeve; a first circular magnetic stainless steel baffle and a second circular magnetic stainless steel baffle are fixed into the nonmagnetic stainless steel sleeve; the diameter of an axle hole of the first circular magnetic stainless steel baffle is smaller than that of an axle hole of the second circular magnetic stainless steel baffle; a magnetic stainless steel sleeve is fixedly arranged in an installation ...

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05-03-2014 дата публикации

Outer rotor axial magnetic circuit single-pole reluctance type rotary transformer with redundant winding

Номер: CN103617882A
Принадлежит:

The invention discloses an outer rotor axial magnetic circuit single-pole reluctance type rotary transformer with a redundant winding and relates to the technical field of outer rotor axial magnetic circuit single-pole reluctance type rotary transformers with redundant windings. The outer rotor axial magnetic circuit single-pole reluctance type rotary transformer with the redundant winding aims at solving the problems that a current rotary transformer used for measuring angles is complicated in structure and large in error. One end face of a first ring of the outer rotor axial magnetic circuit single-pole reluctance type rotary transformer is in butt joint with one end face of a second ring, and the other end face of the second ring is in butt joint with one end face of a third ring. The second ring is an inclined ring and made of permeability magnetic materials, and a first sinusoidal signal winding, a second sinusoidal signal winding, a first cosine signal winding and a second cosine ...

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01-07-2015 дата публикации

Mixed-magnetic-circuit, permanent-magnet-synchronous and outer-rotor motor

Номер: CN104753292A
Принадлежит:

The invention relates to a mixed-magnetic-circuit, permanent-magnet-synchronous and outer-rotor motor, belongs to the technical field of permanent magnet motors, and aims to solve the problem that the eddy-current loss of the iron core of an existing permanent magnet motor is increased rapidly when the motor increases power density by increasing rotation speed and pole pair number, and motor efficiency increasing is limited. The mixed-magnetic-circuit, permanent-magnet-synchronous and inner-rotor motor is characterized in that a winding is embedded into each rectangular annular groove of the motor, and a solid ring is made of soft magnetic composite (SMC); a first magnetic conduction lateral disc cover is disposed on the left port of a magnetic conduction outer ring, a second magnetic conduction lateral disc cover is disposed on the right port of the magnetic conduction outer ring, the polarity of the magnetic poles of the magnetic steel on the first magnetic conduction lateral disc cover ...

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10-12-2014 дата публикации

Compression type coarse and fine coupling axial magnetic circuit rotary transformer and signal winding wire-wrapping method

Номер: CN104200970A
Принадлежит:

The invention provides a compression type coarse and fine coupling axial magnetic circuit rotary transformer and a signal winding wire-wrapping method, and belongs to the technical field of transformers. The problems that the existing multi-stage axial magnetic resistance type rotary transformer is low in precision, and the volume of the existing multi-stage axial magnetic resistance type rotary transformer is increased along with increasing of the number of pole-pairs are solved. An annular groove is formed in an inner ring surface of a stator; 2NP stator long teeth are divided into 2NP upper stator teeth and 2NP lower stator teeth by the annular groove; the 2NP upper stator teeth and the 2NP lower stator teeth form 2NP pairs of stator teeth; an exciting winding is placed in the annular groove of the stator; a coarse transformer sine signal winding and a coarse transformer cosine signal winding are alternately wound on the same layers of the stator teeth in a single-layered wire-wrapping ...

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10-09-2014 дата публикации

Two-phase permanent magnet type tracing frictional vibration actuator

Номер: CN104038015A
Принадлежит:

The invention provides a two-phase permanent magnet type tracing frictional vibration actuator. A rotor central column and a stator outer shell are arranged in a concentric circle mode, stator upper end cover springs are arranged on the upper portion of the rotor central column and the upper portion of the stator outer shell, stator lower end cover springs are arranged on the lower portion of the rotor central column and the lower portion of the stator outer shell, a stator iron core support is arranged at the upper end of each stator lower end cover spring, a stator iron core is arranged at the upper end of each stator iron core support, a stator winding is arranged on each stator iron core, rotor permanent magnets are arranged on the upper portions of the stator iron cores, and the rotor permanent magnets are fixedly connected with the rotor central column. The two-phase permanent magnet type tracing frictional vibration actuator without electromagnetic coupling is adopted, the welding ...

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10-06-2015 дата публикации

Radial magnetic circuit multistage monopole unequal-tooth-width speed reduction type motor protector

Номер: CN104702025A
Принадлежит:

The invention provides a radial magnetic circuit multistage monopole unequal-tooth-width speed reduction type motor protector and belongs to the technical field of motor protection devices. The radial magnetic circuit multistage monopole unequal-tooth-width speed reduction type motor protector aims at solving the problem that at present, due to the fact that no motor protector exists, the using performance of a motor is reduced, the service life of the motor is shortened, and the maintenance cost of the motor is increased. A disk-shaped permanent magnet is fixedly installed in a non-magnetic stainless steel sleeve, two round magnetic stainless steel baffles are fixed to two ends in the non-magnetic stainless steel sleeve, a magnetic stainless steel sleeve is fixed in an installing hole formed in the disk-shaped permanent magnet and is coaxial with shaft holes of the two round magnetic stainless steel baffles, and a plurality of unequal-tooth-width teeth are machined on the inner circumferential ...

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10-09-2014 дата публикации

Three-phase six-unit permanent magnet type tracking friction vibration actuator

Номер: CN104038014A
Принадлежит:

The invention provides a three-phase six-unit permanent magnet type tracking friction vibration actuator, and belongs to the technical field of tracking friction vibration actuators. The upper end of a stator lower end cover spring is provided with a stator iron core support, the upper end of the stator iron core support is provided with a stator iron core, a stator winding is arranged on the stator iron core, the upper portion of the stator iron core is provided with a rotor permanent magnet, and the rotor permanent magnet is fixedly connected with a rotor central post. The stator winding is composed of six winding bodies, every two winding bodies arranged at the interval of 180 degrees are connected into one phase in series, and the phase difference between the three phases of winding bodies is 120 degrees. By the adoption of the three-phase six-unit permanent magnet type tracking friction vibration actuator free of electromagnetic coupling, welding quality can be effectively improved ...

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10-06-2015 дата публикации

Axial magnetic circuit monopole special-shaped tooth-space-omitted deceleration type motor protector

Номер: CN104702020A
Принадлежит:

The invention discloses an axial magnetic circuit monopole special-shaped tooth-space-omitted deceleration type motor protector, belongs to the technical field of motor protection equipment, and aims at solving the existing problems that the using performance and service life of a motor are reduced, and the maintenance cost of the motor is increased owing to the lack of the motor protector. A disc-shaped permanent magnet is fixedly mounted in a nonmagnetic stainless steel sleeve; a first circular magnetic stainless steel baffle and a second circular magnetic stainless steel baffle are fixed into the nonmagnetic stainless steel sleeve; the diameter of an axle hole of the first circular magnetic stainless steel baffle is smaller than that of an axle hole of the second circular magnetic stainless steel baffle; a magnetic stainless steel sleeve is fixedly arranged in an installation hole of the disc-shaped permanent magnet; the inner peripheral surface of the magnetic stainless steel sleeve ...

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