DocumentCode
1395481
Title
Nonlinear control of a large-gap 2-DOF magnetic bearing system based on a coupled force model
Author
de Queiroz, M.S. ; Dawson, D.M. ; Suri, A.
Author_Institution
Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA
Volume
145
Issue
3
fYear
1998
fDate
5/1/1998 12:00:00 AM
Firstpage
269
Lastpage
276
Abstract
A nonlinear coupled force model is used for a large-gap 2-DOF active magnetic bearing system, to develop a nonlinear backstepping-type controller for the full-order electromechanical system. The force coupled model mandates the design of a new commutation strategy to ensure that the desired force is applied to the rotor. The controller requires measurement of the rotor position, rotor velocity, and stator current, and achieves global exponential rotor position tracking. Simulations are provided to illustrate the performance of the controller
Keywords
commutator motors; electric motors; machine bearings; machine control; magnetic devices; nonlinear control systems; rotors; stators; commutation strategy; force coupled model; full-order electromechanical system; global exponential rotor position tracking; large-gap 2-DOF active magnetic bearing system; nonlinear backstepping-type controller; nonlinear coupled force model; rotor position; rotor velocity; stator current;
fLanguage
English
Journal_Title
Control Theory and Applications, IEE Proceedings -
Publisher
iet
ISSN
1350-2379
Type
jour
DOI
10.1049/ip-cta:19981673
Filename
685445
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