A PM-type linear motor capable of self magnetic levitation

Woo Yeon Kim, Seung Jong Kim, Jong Min Lee, Sung Chong Chung

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)850-855
Number of pages6
JournalTransactions of the Korean Society of Mechanical Engineers, A
Issue number10
Publication statusPublished - 2008 Oct


  • Bearingless motor
  • Linear motor
  • Magnetic levitation

ASJC Scopus subject areas

  • Mechanical Engineering


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