BLDCM is a typical mechatronics product, which is composed of motor body and driver. The motor without brush is the motor without brush and commutator (or collector ring), also known as commutator motor. As early as the 19th century when the motor was born, the practical motor is the brushless form, that is, the AC squirrel cage asynchronous motor, which has been widely used. However, there are many insurmountable defects in asynchronous motor, so the development of motor technology is slow. In the middle of the last century, the transistor was born, so the DC brushless motor using transistor commutation circuit instead of brush and commutator came into being. This new type of BLDCM is called electronic reversing DC motor, which overcomes the defects of the first generation of BLDCM.
