直流无刷电机相对直流有刷电机而言，采用电子换向来替代机械换向，延长电机使用寿命，消除机械换向产生的机械噪音、火花及电磁干扰等问题，更方便合理控制电机的机械特性。 Dc brushless motor relative to DC brushless motor, the use of electronic commutation instead of mechanical commutation, prolong the service life of the motor, eliminate mechanical noise, sparks and electromagnetic interference caused by mechanical commutation and more convenient and reasonable control of the mechanical characteristics of the motor.