"Permanent magnet synchronous linear motor" is a kind of AC motor, because the current in its stator winding is AC, and its rotor (vibrator) has permanent magnets, so there is no current if winding is needed.

1. "Permanent magnet" refers to the permanent magnet material on the rotor (rotating motor) or rotor (linear motor) of the motor.

2. "Synchronization" means that the rotating speed (for rotary motors) or moving speed (for linear motors) of the motor can keep a certain strict proportional relationship with the current frequency flowing in the armature winding. The frequency of DC is 0, so as long as you see the word "synchronization" in the name of the motor, you can immediately judge that it belongs to AC motor!

3. "Straight line" means that the moving part of the motor moves along a straight line, which is different from the "rotation" movement of the rotor in the traditional motor.