Magnetic Rotor & Stator

Today, the newest powerful and efficient electric motors use permanent magnets in their design, instead of powered by an electric current through copper windings. Permanent magnet motors (PM motors) have some key advantages.

Permanent Magnetic Rotor
Magnetic rotor serves as a part of Voice Coil Motor (VCM) which is an electric motor consisting of a permanent magnet and yoke in conjunction with a coil. You can also called it Voice Coil Actuators (VCA). To design a tailor-made VCM, you should take into consideration the magnet material, magnet position, the surrounding structure, etc..