Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Reduction of Cogging Torque of the Spindle Motor by Design of Magnetizer Shape

착자기 형상 설계를 통한 스핀들 모터의 코깅 토크 저감에 관한 연구

  • Oh, Se-Young (Dept. of Electrical Engineering, Hanyang University) ;
  • Lim, Seung-Bin (Dept. of Electrical Engineering, Hanyang University) ;
  • Lee, Jin-Hun (Dept. of Electrical Engineering, Hanyang University) ;
  • Jung, Dae-Sung (Dept. of Electrical Engineering, Hanyang University) ;
  • Kim, Sol (Dept. of Electrical Engineering, Yuhan College) ;
  • Lee, Ju (Dept. of Electrical Engineering, Hanyang University)
  • 오세영 (한양대학교 전기공학과) ;
  • 임승빈 (한양대학교 전기공학과) ;
  • 이진헌 (한양대학교 전기공학과) ;
  • 정대성 (한양대학교 전기공학과) ;
  • 김솔 (유한대학 전기정보과) ;
  • 이주 (한양대학교 전기공학과)
  • Published : 2007.07.18
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Abstract

The spindle motor used on the ODD has a characteristic that electromagnetic pulsation and noise change differently by magnetization pattern of rotor. Therefore, design of magnetizer yoke that make to have optimal magnetization pattern is very important. In this paper, we proposed an analysis method that applies magnetizer analysis result to the spindle motor. We measured back-EMF of the real spindle motor. And then, we verified validity of the proposed analysis method by comparing the measurement and analysis result. Also, we designed the magnetizer shape that has optimal magnetization pattern by using proposed method. As a result, we reduced cogging torque of the spindle motor.

Keywords