Development of a miniature axial-field spindle motor

Author

Chuo, Ying-Chi ; Wang, Chien-Chang ; Liu, Chien-Sheng ; Yu, Hsing-Cheng ; Chang, Yu-Hsiu ; Horng, Ji-Bin

Author_Institution

Opto-Electron. & Syst. Labs., Ind. Technol. Res. Inst., Taiwan

Volume

41

Issue

2

fYear

2005

Firstpage

974

Lastpage

976

Abstract

This paper presents the development of a miniature axial-field spindle motor. Such a spindle motor could play a very important role in modern storage devices, which demand increasingly large storage capacity under limited physical space, especially for the miniature hard-disk drive or small-form-factor optical (SFFO) storage drive developments. In the present paper, an axial-field motor structure was employed to facilitate the design of a miniature spindle motor of a low profile height. In addition, the axial spoolless coil windings, which eliminate the cogging torque due to slot, serve as the electromagnetic exciting source.

Keywords

disc drives; electric motors; hard discs; optical disc storage; axial spoolless coil windings; axial-field motor structure; cogging torque; electromagnetic exciting source; large storage capacity; miniature axial-field spindle motor; miniature hard-disk drive; small-form-factor optical storage drive; storage devices; Coils; Electromagnetic forces; Forging; Magnetic analysis; Magnetic flux; Magnetic shielding; Permanent magnet motors; Prototypes; Stator windings; Torque; Axial-field; spindle motor; storage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.842139

Filename

1396274