With the rise of automation, brushless stepping motor, an integrated product of brushless motor, has been favored by more and more people. Brushless motor is a poor evaluation of integration, it is a bright star in the history of motors. Brushless motors are composed of motor bodies and drivers. It is a typical mechatronics product.
The stator windings of brushless motors are mostly made into three-phase symmetrical star connections, which are very similar to three-phase asynchronous motors.
The rotor of the motor is sticked with magnetized permanent magnets. In order to detect the polarity of the motor rotor, a position sensor is installed in the motor.
The driver is composed of power electronic devices and integrated circuits. Its function is to receive the starting, stopping and braking signals of the motor to control the starting, stopping and braking of the motor;
Receiving position sensor signals and forward and reverse signals, it is used to control the on-off of each power tube of the inverter bridge to generate continuous torque;
Accept speed instructions and speed feedback signals to control and adjust the speed; Provide protection and display, etc.
Since the brushless motor is operated in an automatic control mode, it will not add a starting winding to the rotor like the synchronous motor started under heavy load under variable frequency speed regulation, nor will it generate oscillation and out-of-step when the load changes suddenly.
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TAG brushless motor