PROGRESS: Completed Project	PROJECT REF: NA
PROJECT TITLE: High-performance Linear Motor Actuator
PROJECT DESCRIPTION: High-performance Linear Motor Actuator A new actuator for manufacturing automation Using novel linear direct-drive autuator system incorporating variable reluctance(VR) technology, the PolyU has developed a high performace autuator for automation prosers. The autuator has a very simple structure and can be easily manufautured. The need for expensive magnets is eliminated and there is no limit on travel distance. The actuator ix extremely robust and can be used in hostile environments, and its performance equals to that of permanent magnet linear motor. Embedded in the unique design are the nonlinear control and current drive. A novel nonlinear control method, using adaptive feedback linearization and dynamic friction compensation has been developed and implemented for precise motion control of variable reluctance linear actuator. Presently the travelling accuracy is 3/4 micron and its maximum acceleration is 3G. The actuator is particularly suitable for high-speed and high-precision motion applications.
FOCUS AREA(S): Opto Electronics
KEYWORDS: Actuator
MODE OF COLLABORATION: Any
STATUS PATENT: NA	PATENT NO: NA
ORGANIZATION: Department of Electrical Engineering
CONTACT PERSON: Dr Norbert Cheung	EMAIL: eenchuen@polyu.edu.hk
TEL: (852)-2766-6182	FAX: (852)-2330-1544
WEBSITE: http://www.ife.polyu.edu.hk/template_areas.htm	DATE: 26/01/2005