A Study on the Sensorless Realization of Magnetic Levitation System

자기 부상계의 센서리스 실현에 관한 연구

  • 김창화 (경남전문대학 제어시스템정보과) ;
  • 정병건 (한국해양대학교 기관공학부) ;
  • 양주호 (부경대학교 제어계측공학과)
  • Published : 1998.02.01

Abstract

The magnetic levitation system is utilized in the magnetic bearing of high-speed rotor because of little friction, no lubrication, no noise and so on. The magnetic levitation system need the feedback controller for the stabilization of system, and gap sensors are generally used to measure the gap. The use of sensor easily goes into troublesome caused by sensor failure discord between the measurement point and the control point etc. This paper presents the design of robust stabilizing contoller by $H_{\infty}$ control theory using the sensorless method proposed by authors in the magnetic levitation system. And we investigated both the validity of the designed controller and the usefulness of the sensorless magnetic levitation system through results of actual experiment.

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