The motor is a rotating electric machine that transforms electrical energy into mechanical energy. The motor uses the energized coil to produce a rotating magnetic field and acts on the rotor squirrel cage closed aluminum frame to form magnetoelectric rotating torque. The motor is mainly composed of stator and rotor, and the direction of the force acting on the conducting wire in the magnetic field is related to the direction of the current and the direction of the magnetic induction line (the direction of the magnetic field). The working principle of the motor is the effect of the magnetic field on the current force, so that the motor rotates. In general, the part of the motor is rotating, which is called a rotor motor; also, a linear motor is called a linear motor.