Study of optimum design on magnetizing fixtures for the ring magnet in spindle motors

Y. D. Yao*, Der-Ray Huang, S. Z. Huang, S. J. Wang, T. F. Ying

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The ring magnet magnetization profiles in spindle motor were investigated theoretically by a computer-aided simulation with 2D modeling processes of finite element analysis. Under the three topologies of magnetizing fixture, the current was varied below 15 kA. The double-sided fixture shows a minimum cogging torque near 8 kA. However, the single-sided fixture internal to the magnet shows a maximum torque constant near 8 kA. Experimental data are in good agreement with theoretical calculation. A high efficiency and low cogging torque spindle motor has been achieved by optimum design of the magnetizing fixture to magnetize the ring magnet in a spindle motor.

Original languageEnglish
Pages (from-to)4904-4906
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number8 II A
DOIs
StatePublished - 15 Apr 1999
EventProceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, USA
Duration: 9 Nov 199812 Nov 1998

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