Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Characteristic of Spindle Motor by Unsymmetric Magnetization Distribution in Permanent Magnet

비대칭 착자에 따른 스핀들 모터 특성에 관한 연구

  • Park, Jae-Young (Dept. of Electrical Engineering, Hanyang University) ;
  • Bae, Jae-Nam (Dept. of Electrical Engineering, Hanyang University) ;
  • Kim, Ki-Chan (Dept. of Electrical Engineering, Hanyang University) ;
  • Lee, Ju (Dept. of Electrical Engineering, Hanyang University)
  • 박재영 (한양대학교 전기공학과) ;
  • 배재남 (한양대학교 전기공학과) ;
  • 김기찬 (한양대학교 전기공학과) ;
  • 이주 (한양대학교 전기공학과)
  • Published : 2008.10.23
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Abstract

Distribution of Permanent magnet used in the spindle motor on the ODD is arranged by magnetizer. In general, permanent magnet is putted between yoke and back yoke of magnetizer so that symmetric magnetization distribution. But the magnet has unsymmetric magnetization distribution because of eccentricity of the yoke in mass production. So, in this paper we discuss the effect of asymmetric magnetization distribution on back EMF and cogging torque of the spindle motor.

Keywords