A robust and low-cost linear motion system for precision manufacturing automation

Chow Norbert Cheung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Most advanced manufacturing processes require linear motion for material transfer, packaging, assembly and electrical wiring. To achieve precise linear motion, 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 use of variable reluctance technology to construct a novel linear direct-drive actuator system 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 hostile environment. A novel control method, using cascade control and force linearizing is developed and implemented for precise motion control of the actuator. Preliminary results of the motion system indicate that the system has fast response with good accuracy
Original languageEnglish
Title of host publicationConference Record of the 2000 IEEE Industry Applications Conference Industry Applications Conference, 2000, 8-12 October, 2000, Rome
Number of pages6
ISBN (Print)0780364015
Publication statusPublished - 2000

Publication series

NameIndustry Applications Society. IEEE - IAS Annual Meeting. Conference Record
ISSN (Print)0197-2618


  • Cascade control
  • Electric control equipment
  • Force control
  • Linear synchronous motors
  • Linearisation techniques
  • Machine control
  • Manufacturing processes
  • Motion control
  • Process control
  • Reluctance motor drives
  • Robust control


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