Position control of linear switched reluctance motors for high-precision applications

Wai Chuen Gan, Chow Norbert Cheung, Li Qiu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

109 Citations (Scopus)


Most advanced manufacturing processes require precise motions for material transfer, packaging, assembly, and electrical wiring. To achieve precise linear motions, most of these high-performance manufacturing machines use X-Y sliding tables with permanent-magnet rotary motors and rotary to linear couplers. Though this method is the most widely used, it has disadvantages of low accuracy, complex mechanical adjustments, high cost, and low reliability. This paper describes the position control of a linear switched reluctance motor for high-performance motions in manufacturing automation. The proposed actuator has a very simple structure and it can be manufactured easily. There is no need for magnets and no limitation on the travel distance. The actuator is extremely robust and can be used in a hostile environment. A novel current-force-position lookup table is first developed to perform the force linearization. Then, a plug-in robust compensator using H∞loop-shaping design is employed to improve the system robustness and the tracking performance. Experimental results of the motion system indicate that the system has fast tracking responses with good accuracy.
Original languageEnglish
Pages (from-to)1350-1362
Number of pages13
JournalIEEE Transactions on Industry Applications
Issue number5
Publication statusPublished - 1 Sept 2003


  • H loop-shaping design ∞
  • Linear switched reluctance motor (LSRM)
  • Lookup table force linearization
  • Plug-in robust compensator
  • Position control
  • Precision manufacturing automation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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