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 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 feedback when the 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 real input using measured output only.
Keywords :
Lyapunov methods; asymptotic stability; control system synthesis; electromagnetic actuators; feedback; magnetic bearings; nonlinear control systems; Lyapunov methods; asymptotic stability; backstepping; linear dynamics; magnetic actuator; magnetic bearing systems; nonlinear output feedback control; square technique;
Conference_Titel :
SICE 2003 Annual Conference
Conference_Location :
Fukui, Japan
Print_ISBN :
0-7803-8352-4
