What is the PM stepper motor?
It is possible that the stator is a coil and the rotor is a permanent magnetOr maybe the rotor is coil and the stator is permanent magnet
The rotor and stator of an electric excitation motor are all electromagnetic coils and must be energizedRotor and stator of permanent magnet motor
PM is the abbreviation of permanent magnet, that is permanent magnet.PM stepper motor, that is, permanent magnet stepper motor.Permanent magnet motor is relative to electric excitation motor
