A PM-type Linear Motor Capable of Self Magnetic Levitation

자체 자기부상이 가능한 영구자석형 리니어 모터

  • 김우연 (KIST, 에너지메카닉스연구센터) ;
  • 김승종 (KIST, 에너지메카닉스연구센터) ;
  • 이종민 (KIST, 에너지메카닉스연구센터) ;
  • 정성종 (한양대학교 기계공학부)
  • Published : 2008.10.01


This paper suggests a new linear motor which is able to levitate as well as move its mover without any linear bearing or even additive windings. Its structure is very similar to a well-known both-sided linear motor which consists of two stators and a common mover. And the movement principle is the same with that of conventional linear motor. But unlike the conventional one, the amplitudes of phase currents are controlled to levitate the mover. In this paper, the structure and principle of the suggested bearingless linear motor are introduced in detail and its feasibility is experimentally investigated. Using the prototype and a very simple controller, we succeeded in the levitation and linear movement of the mover at a time.


Bearingless Motor;Linear Motor;Magnetic Levitation


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