Motor stall protection circuit, motor control system and method
A technology for protecting circuits and motor stalls, applied in control systems, motor control, emergency protection circuit devices, etc., can solve problems such as low reliability, long time for stall judgment, low efficiency of motor stall detection and protection, etc.
Active Publication Date: 2022-08-02
CHINA AUTOMOTIVE INNOVATION CORP
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Problems solved by technology
However, the motor stall detection and protection methods in the prior art rely too much on the processing capability of the MCU and the accuracy of related algorithms, and the stall determination takes a long time, which leads to low efficiency and reliability of motor stall detection and protection. Low
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[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0045] Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, unless otherwise specified,...
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The invention discloses a motor locked-rotor protection circuit, a motor control system and a method, and relates to the technical field of automatic control. It includes: a switch module and an enabling module; the switch module is used for receiving the first level signal output by the enabling terminal of the micro-control unit, and is also used for receiving the voltage signal output by the two output terminals of the motor position sensor. When the level signal is a high level signal or the voltage signal is an AC signal, the control enabling module is turned on, and when the first level signal is a low level signal and the voltage signal is a DC signal, the control enabling module is disconnected; The module is used to enable the power drive circuit to drive the motor to run when it is turned on, and to turn off the power drive circuit and stop the motor when it is disconnected. The motor stall protection circuit provided by the invention realizes the motor stall detection and protection through a simple hardware circuit, and has low cost, high efficiency and high reliability.
Description
technical field [0001] The invention relates to the technical field of automatic control, in particular to a motor stall protection circuit, a motor control system and a method. Background technique [0002] At present, with the development of automatic control technology, many traditional mechanical components have realized motor control. The advantage of using motor control is high efficiency and fast response. However, when the motor is running, the failure of the rotor stuck sometimes occurs. When the rotor is locked, a continuous large current flows through the power drive circuit used to drive the motor to run. If the stall fault is not detected in time, it is easy to cause damage to the power drive circuit or the motor. [0003] In the prior art, such as figure 1 The motor control system shown is used to realize the detection and protection of the motor stall. like figure 1 As shown, the motor control system may include: a microcontroller unit (Microcontroller Un...
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IPC IPC(8): H02H7/085H02P29/024
CPCH02H7/085H02H7/0855H02H7/0833H02P29/024
Inventor 王志伟黄美娟汪冬亮张东方孙科张杰
Owner CHINA AUTOMOTIVE INNOVATION CORP