​​​​​​​What is a brushless motor?

Brushless DC motor is a typical mechatronics product composed of the motor body and driver. Brushless motor refers to the motor without brush and commutator (or Slip ring), also known as commutatorless motor. As early as the birth of electric motors in the last century, the practical form of motors was the brushless form, namely the AC squirrel cage asynchronous motor, which has been widely used. However, asynchronous motors have many insurmountable defects, resulting in slow development of motor technology. In the middle of this century, transistors were born, which led to the emergence of DC brushless motors that replaced brushes and commutators with transistor commutation circuits. This new type of brushless motor is called an electronic commutated DC motor, which overcomes the shortcomings of the first generation of brushless motors.