Brushless motor driving system
A drive system, brushless motor technology, applied in the direction of a single motor speed/torque control, current controller, etc., can solve the problems of low positioning accuracy, poor motor control stability, and low brush life.
Pending Publication Date: 2020-05-29
DALIAN GUANGYANG SCI & TECH ENG CO LTD
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Problems solved by technology
[0002] At present, most of the continuous regulating valve actuators are controlled by the scheme of brush motor plus limit switch, but the brush life of the brush motor used in the prior art is low, generally 2000 to 3000 hours; the control method is mostly open loop control, the positioning accuracy is not high, and the stability of motor control is poor
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[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] The invention provides a brushless motor drive system, such as figure 1 As shown, it is a schematic diagram of the overall structure of the embodiment of the present invention, including: a motor, a communication module, a power module, a motor signal acquisition module, an MCU operation module, a driver and a three-phase full-bridge d...
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The invention provides a brushless motor driving system. The brushless motor driving system comprises a motor, a communication module, a power supply module, a motor signal acquisition module, an MCUoperation module, a driver and a three-phase full-bridge driving module. The MCU operation module receives a speed signal, a position signal and a current signal and sends out a speed instruction, a position instruction and a current instruction; the driver converts the instruction sent by the MCU operation module into a corresponding voltage signal and performs power amplification; and the three-phase full-bridge driving module converts a small voltage signal sent by the driver into a voltage signal capable of driving the motor, carries out power amplification, and drives the motor to rotateaccording to the corresponding instruction. The system has three-loop control functions of a current control loop, a speed control loop and a position control loop, the current, the speed and the position of the motor can be accurately controlled in real time, and the position can be accurately and stably controlled in real time.
Description
technical field [0001] The invention relates to the field of motor drive, in particular to a brushless motor drive system. Background technique [0002] At present, most of the continuous regulating valve actuators are controlled by the scheme of brush motor plus limit switch, but the brush life of the brush motor used in the prior art is low, generally 2000 to 3000 hours; the control method is mostly open loop Control, the positioning accuracy is not high, and the stability of motor control is poor. Contents of the invention [0003] The present invention provides a brushless motor drive system to overcome the above technical problems. [0004] The present invention provides a brushless motor drive system, including: a motor, a communication module, a power supply module, a motor signal acquisition module, an MCU calculation module, a driver and a three-phase full-bridge drive module; [0005] The communication module is connected with the MCU operation module, provides...
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IPC IPC(8): H02P6/08H02P6/28
CPCH02P6/08H02P6/28
Inventor 于德海
Owner DALIAN GUANGYANG SCI & TECH ENG CO LTD