High-precision position control of a novel planar switched reluctance motor

Jianfei Pan, Chow Norbert Cheung, Jinming Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

93 Citations (Scopus)


This paper presents the position control of a novel two-dimensional (2-D) switched reluctance (SR) planar motor. The planar motor consists of a six-coil moving platform and a flat stator base made from laminated mild steel blocks. Unlike conventional x - y tables, which stack two moving slides on top of each other, the proposed 2-D planar motor has the advantages of simple mechanical construction, high reliability, and the ability to withstand harsh operating conditions. Together with the two linear encoders attached to the x-axis and y-axis, the motor can be controlled under closed-loop mode. To combat the problem of force nonlinearity, this paper proposes a cascade controller with force linearization technique to implement the drive controller. Due to the unique structure of the planar motor's magnetic circuit, there is very little coupling between the x-axis and y-axis, and no decoupling compensation is needed. Preliminary results show that the proposed SR planar motor has a positional accuracy of 5 μm and a maximum acceleration/deceleration rate of 2 G.
Original languageEnglish
Pages (from-to)1644-1652
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Issue number6
Publication statusPublished - 1 Dec 2005


  • Planar motor
  • Position control
  • Switched reluctance

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Instrumentation


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