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

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

4007

Lastpage

4009

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800737

Filename

800737