Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Implementation of permanent Magnetic Repulsion Type of Magnetic Levitation Table Using One Degree-of-freedom Active Control

1 자유도 능동제어에 의한 영구자석 반발형 자기부상 테이블의 구현

  • 조영근 (미래산업주식회사 미래연구센터) ;
  • 최기봉 (한국기계연구원 지능형 정밀기계연구부 로봇제어그룹) ;
  • 신시타다히코 (동경공업대학(일본) 정밀공학연구소) ;
  • 시모코베아키라 (동경공업대학(일본) 정밀공학연구소)
  • Published : 2002.07.01
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Abstract

This paper shows an experimental magnetic levitation table using one degree-of-freedom active control. The magnetic levitation table using repulsions of permanent magnets was theoretically presented already. Thus the objective of this paper is to prove stable levitation with only one degree-of-freedom active control experimentally. For the design of the system, at first, permanent magnets are selected. Secondly, the spring constants of the virtual spring are obtained by simulation. Thirdly, the moving magnets are arranged using a stable layout relation. Fourthly, a linear voice coil motor is designed. Finally, the magnetic levitation system is manufactured. The phenomenon of stable levitation in the manufactured table is proven by means of dynamic time and frequency responses. The differences between the theoretical natural frequencies and experimental ones are analyzed. Also, stable range in the control direction is shown experimentally.

Keywords

References

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