Title :
A nonlinear output feedback control method for magnetic bearing systems
Author :
Liu, Kang-Zhi ; He, Rong
Author_Institution :
Dept. of Electr. & Mech. Eng., Chiba Univ., Japan
Abstract :
In this paper, a nonlinear output feedback control method is proposed for a magnetic bearing system which has a strong nonlinearity in the magnetic bearing system which has a strong nonlinearity in the magnetic actuator. The basic idea is to make full use of the feature that the dynamics part is linear and hence can be stabilized by output of the actuator is regarded as a virtual input. Then it is shown that the backstepping and completing square techniques enable the construction of the construction of the real input using measured output only.
Keywords :
asymptotic stability; closed loop systems; electromagnetic actuators; feedback; magnetic bearings; nonlinear control systems; nonlinear dynamical systems; backstepping; magnetic actuator; magnetic bearing systems; nonlinear output feedback control method; Actuators; Backstepping; Control systems; Electromagnets; Force control; Magnetic forces; Magnetic levitation; Nonlinear control systems; Nonlinear dynamical systems; Output feedback;
Conference_Titel :
Control Applications, 2003. CCA 2003. Proceedings of 2003 IEEE Conference on
Print_ISBN :
0-7803-7729-X
DOI :
10.1109/CCA.2003.1223140
