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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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Применить Всего найдено 5. Отображено 5.
18-07-2023 дата публикации

Motor current protection circuit

Номер: CN116454840A
Автор: CHEN KUNMIN
Принадлежит:

The invention discloses a motor current protection circuit. The voltage calculation circuit judges whether each lower bridge switch is fully opened or not, then judges whether the voltage difference between the first end and the second end of each fully-opened lower bridge switch is larger than or equal to a zero value or not, and adds all the voltage differences larger than or equal to the zero value to output a voltage signal. The control circuit controls the driving circuit to drive the plurality of upper bridge switches and the plurality of lower bridge switches according to the voltage signal.

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Номер записи: 1
31-03-2010 дата публикации

Motor driving circuit for regulating rotating speed of motor by changing output voltage

Номер: CN0101686031A
Автор: KEMIN CHEN, QINGSHENG LI, KUNMIN CHEN, SHENMIN LUO, QINGSHAN LU, CHEN KEMIN, LI QINGSHENG, CHEN KUNMIN, LUO SHENMIN, LU QINGSHAN
Принадлежит:

The invention discloses a motor driving circuit for regulating the rotating speed of a motor by changing output voltage. One end of the motor is coupled to a variable voltage source, and the motor driving circuit comprises a motor driving unit, a circuit control unit and a judgment unit. The motor driving unit consists of a first end coupled to the other end of the motor, a second end coupled to agrounding end and a third end and is used for driving the motor. The circuit control unit is coupled between the first end and the third end of the motor driving unit and used for controlling the voltage between the first end and the third end of the motor driving unit. The judgment unit is coupled between the variable voltage source and the circuit control unit and used for controlling the circuit control unit according to the voltage of the variable voltage source so as to change the voltage between the first end and the third end of the motor driving unit.

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Номер записи: 2
04-04-2023 дата публикации

Motor driver and control method thereof, and motor driving system

Номер: CN115912998A
Автор: CHEN LIWEI, FU CHONGXIAN, CHEN KUNMIN
Принадлежит:

The invention relates to a motor driver, a control method thereof and a motor driving system, the motor driver comprises a rotation information pin, an analog detection circuit and a mode switching circuit, and the rotation information pin is used for receiving a reference signal. The analog detection circuit is electrically connected to the rotation information pin, and the mode switching circuit is electrically connected to the analog detection circuit. The analog detection circuit is configured to determine whether the reference signal belongs to an analog signal, and when the reference signal does not belong to the analog signal, the motor driver is maintained in a host mode. When the reference signal belongs to the analog signal, the mode switching circuit determines whether the analog signal is noise. When the analog signal is not noise, the motor driver switches from the host mode to the slave mode.

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Номер записи: 3
10-08-2011 дата публикации

System and method of transport vehicle for monitoring and managing temperature of goods carried

Номер: CN0102147964A
Автор: KUNMIN CHEN, CHEN KUNMIN
Принадлежит:

The invention relates to a system and a method of a transport vehicle for monitoring and managing temperature of goods carried. The system comprises: a running information collection unit, a remote monitoring unit and a notification unit, wherein the running information collection unit can acquire the running information of the transport vehicle, and the running information includes vehicle position information, running parameter information, time information and a sensed temperature value; the remote monitoring unit can receive and record the running information and judge whether the sensed temperature value in the running information is abnormal; the notification unit outputs a notification signal to a receiver when the sensed temperature value becomes abnormal. The receiver can know ifthe temperature of the carried goods is abnormal according to the notification signal, sense the temperature of the carried goods when the temperature becomes abnormal and notify relevant person of the ...

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Номер записи: 4
11-06-2014 дата публикации

Electrochemical method and electrochemical device

Номер: CN103849913A
Автор: ZHENG WENFENG, XU JICHANG, YOU HUIXIN, CHEN KUNMIN, LIN JIANLI, LIN JIANZHONG
Принадлежит:

The invention provides an electrochemical method and an electrochemical device. The electrochemical method and the electrochemical device are applied to electrochemical processing such as electroplating and electro-polishing on the surface of a processed object; in particular when the method and the device are applied to a large-dimension processed object, no large current is needed and continuous batch completion can be realized, and the method and the device have the advantages and effects of effectively saving labor, space and time, and being excellent in processing uniformity; the electrochemical method is mainly characterized in that an electrode plate and an electrolyte are arranged in a plating tank module, the processed object is contacted with the electrolyte by virtue of relative movement generated between the plating tank module and the processed object so that an electrolytic reaction is aroused, and then electrochemical processing on the surface of the processed object is realized ...

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Номер записи: 5