Robust fuzzy control of a nonlinear magnetic bearing system with computing time delay

Author

Zheng, Kai ; Liu, Heng ; Yu, Lie

Author_Institution

Key Lab. of Minist. of Educ. for Strength & Vibration, Xian Jiaotong Univ., Xian

fYear

2008

fDate

2-5 July 2008

Firstpage

839

Lastpage

843

Abstract

This paper presents a robust fuzzy logic-base control scheme for a nonlinear magnetic bearing system with computing time delay. A proper Takagi-Sugeno fuzzy model is chosen to represent the nonlinear magnetic bearing. A fuzzy-model-based PDC controller is design in terms of a proposed delay-dependent stabilization criterion which guarantees the asymptotic stability of the fuzzy model. Simulation show the effectiveness and superiority of the proposed method.

Keywords

asymptotic stability; control system synthesis; delays; fuzzy control; magnetic bearings; mechanical variables control; nonlinear control systems; Takagi-Sugeno fuzzy model; asymptotic stability; computing time delay; delay-dependent stabilization criterion; fuzzy-model-based PDC controller design; nonlinear magnetic bearing system; robust fuzzy logic-base control scheme; Asymptotic stability; Control systems; Delay effects; Fuzzy control; Fuzzy logic; Fuzzy systems; Nonlinear control systems; Nonlinear magnetics; Robust control; Takagi-Sugeno model; LMI; PDC; T-S model; magnetic bearing; stability; time delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Intelligent Mechatronics, 2008. AIM 2008. IEEE/ASME International Conference on

Conference_Location

Xian

Print_ISBN

978-1-4244-2494-8

Electronic_ISBN

978-1-4244-2495-5

Type

conf

DOI

10.1109/AIM.2008.4601770

Filename

4601770