Title :
A prototype of a levitation-type PM motor with a millimeter-sized rotor
Author :
Komori, M. ; Yamane, T. ; Murata, N.
Author_Institution :
Kyushu Inst. of Technol., Fukuoka, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
This paper describes a prototype of a levitation type PM (permanent magnet) motor with a millimeter-sized cylindrical rotor. The PM motor consists of a rotor (φ 2.0 mm×10 mm), a pair of electromagnets, a pair of photodiodes, and an analog PD controller. The rotor successfully rotates levitating in the center of electromagnets. In this paper, driving characteristics such as rotation speed, acceleration characteristics, and magnetic friction of the rotor are discussed. It is shown that the levitation-type PM motor is very promising
Keywords :
acceleration; electromagnetic actuators; electromagnets; magnetic bearings; magnetic levitation; permanent magnet motors; position control; rotors; small electric machines; two-term control; acceleration characteristics; analog PD controller; cylindrical rotor; driving characteristics; electromagnets; levitation-type PM motor; magnetic friction; millimeter-sized rotor; permanent magnet motor; photodiodes; rotation speed; Diodes; Electromagnets; Friction; Iron; Magnetic levitation; PD control; Permanent magnet motors; Prototypes; Rotors; Turbines;
Journal_Title :
Magnetics, IEEE Transactions on
