Brushed motors convert electrical energy into mechanical energy through the rotation of coils and commutators. The brushless motor is provided by the controller with direct current in different current directions to achieve the alternating change of the current direction of the motor coil, and there is no brush and commutator between the rotor and stator of the brushless motor.
Brushless motors replace mechanical commutation with electronic commutation and are technically superior to brushed motors. The carbon brushes of brushed motors are prone to wear and have a relatively shorter life than brushless motors. The brushless motor is less efficient than the brushed motor in a certain current range. But in general, the advantages of brushless motors are stronger than those of brushed motors.
Brushed motors are relatively noisy and easy to wear; The friction is large, easy to heat, and the relative life is short. The brushed motor has excellent low-speed torque performance and large torque and other performance characteristics that are irreplaceable by brushless motors. The brushed motor is relatively low interference, low noise, long life and low maintenance cost.