Employing variable reluctance direct-drive motion actuators in high performance manufacturing machines

Chow Norbert Cheung

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

2 Citations (Scopus)


Acad. Publ., World Publ. Corp. Most advanced manufacturing processes require high-speed and high precision motion control for material transfer, packaging, assembly, and electrical wiring. Examples are surface mounting of electronic components, wire bonding of semiconductor chips, and assembly of watches and hard disks. To achieve precise motion control, most of these high-performance manufacturing machines use rotary d.c. or a.c. motors as the prime motion actuator, and couple their output shafts to mechanical motion translators (e.g. reduction gear, belt, ball screw, etc.). Though this is the most widely used method, it has disadvantages of reduced accuracy, complex mechanical structure, difficult adjustments and alignments, high production cost, and low reliability. In this paper, the author proposes a new direction in high performance machine design, and suggests that future high performance motion systems should be designed through "simplifying the mechanics through specialized direct-drive actuators and advanced control methodologies". For this purpose, this paper investigates a class of variable reluctance (VR) direct-drive motion actuators for high performance machines. The paper looks into several specialized motion actuator system design, (including limited stroke actuators, embedded artificial limb, linear motion devices, and planar motion devices), highlights their features and advantages, and describes the challenges of controlling these devices.
Original languageEnglish
Title of host publicationProceedings - IPEMC 2000
Subtitle of host publication3rd International Power Electronics and Motion Control Conference
Number of pages6
ISBN (Electronic)780003464X, 9787800034640
Publication statusPublished - 1 Jan 2000
Event3rd International Power Electronics and Motion Control Conference, IPEMC 2000 - Beijing, China
Duration: 15 Aug 200018 Aug 2000


Conference3rd International Power Electronics and Motion Control Conference, IPEMC 2000


  • Precision motion systems
  • Variable reluctance motors

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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