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

Content Provider	IEEE Xplore Digital Library
Author	Cheung, N.C.
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. Eng., Hong Kong Polytech., Kowloon, China (Cheung, N.C.)
Abstract	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 DC or AC 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.
Starting Page	832
Ending Page	837
File Size	422449
Page Count	6
File Format	PDF
ISBN	780003464X
DOI	10.1109/IPEMC.2000.884612
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-08-15
Access Restriction	Subscribed
Rights Holder	Int. Acad. Publ., World Publ. Corp.
Subject Keyword	Motion control Assembly Control systems Hydraulic actuators Manufacturing processes Semiconductor materials Electronics packaging Semiconductor device packaging Packaging machines Wiring
Content Type	Text
Resource Type	Article

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