DocumentCode :
1128797
Title :
Experimental study of sliding mode control for a benchmark magnetic bearing system and artificial heart pump suspension
Author :
Lee, Jun-Ho ; Allaire, Paul E. ; Tao, Gang ; Decker, Jeffrey A. ; Zhang, Xuerui
Author_Institution :
Dept. of Mech. & Aerosp. Eng., Univ. of Virginia, Charlottesville, VA, USA
Volume :
11
Issue :
1
fYear :
2003
fDate :
1/1/2003 12:00:00 AM
Firstpage :
128
Lastpage :
138
Abstract :
This paper deals with the sliding mode control of a balance beam on two symmetric magnetic bearings. A state-space model of the system is developed and implemented. The sliding mode controller is separated into linear and nonlinear components. A reaching condition to bring the system states to a sliding surface is developed and a continuous function boundary layer is used to avoid chattering. The system performance with a small and large boundary layers is illustrated by experimental results. The effect of a nonlinear component gain to the system performance is analyzed. A new experimental setup is introduced using a real-time operating system, which gives a designer a convenient method to change the controller parameters. Experimental results verify the effectiveness of the sliding mode controller. A potential application of this study to an artificial heart pump system is demonstrated.
Keywords :
artificial organs; cardiology; magnetic bearings; power consumption; state-space methods; variable structure systems; artificial heart pump suspension; balance beam; benchmark magnetic bearing system; continuous function boundary layer; nonlinear component gain; real-time operating system; sliding mode control; state-space model; symmetric magnetic bearings; system performance; Artificial heart; Control systems; Design methodology; Magnetic levitation; Operating systems; Performance analysis; Performance gain; Real time systems; Sliding mode control; System performance;
fLanguage :
English
Journal_Title :
Control Systems Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
1063-6536
Type :
jour
DOI :
10.1109/TCST.2002.806457
Filename :
1173018
Link To Document :
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