Working Principle Of Brushed Motor

The main structure of the brushed motor is the stator + rotor + brush, which obtains the rotating torque through the rotating magnetic field, thereby outputting kinetic energy. The brush and the commutator are in constant contact and friction, and play a role in conduction and commutation during rotation.

The brushed motor adopts mechanical commutation, the magnetic pole does not move, and the coil rotates. When the motor is working, the coil and the commutator rotate, but the magnetic steel and carbon brush do not rotate. The alternating change of the coil current direction is accomplished with the commutator and brush rotating with the motor.

In a brushed motor, the process is to arrange the two power input terminals of each group of coils in order, and separate them from each other with an insulating material to form a cylinder-like thing, which is connected to the motor shaft. The power supply A small post (carbon brush) made of two carbon elements, under the pressure of the spring, is pressed from two specific fixed positions on two points of the upper coil power input ring cylinder to energize a group of coils.