The characteristics analysis of magnetic bearing based on H-infinity controller

Author

Cao, Guangzhong ; Fan, Suxiang ; Xu, Gang

Author_Institution

Sch. of Eng. & Technol., Shenzhen Univ., China

Volume

1

fYear

2004

fDate

15-19 June 2004

Firstpage

752

Abstract

A H-infinity controller for an active magnetic bearing (AMB) system is designed. Starting responses of the AMB system under disturbance and system parameters perturbation are investigated by simulation model. Selection of the controller weights function and initial position of rotor influence the starting performance. The relationship between control current and displacement of the rotor is presented. The results show that the developed H-infinity controller is able to ensure the system with good starting characteristics, strong robustness, and satisfying disturbance suppression effect.

Keywords

H^∞ control; control system analysis; control system synthesis; digital simulation; magnetic bearings; mechanical variables control; robust control; rotors; starting; H-infinity controller design; MATLAB simulation model; active magnetic bearing system; controller weight function; disturbance suppression effect; robustness; rotor displacement; starting characteristic analysis; Control systems; Design engineering; Displacement control; H infinity control; Magnetic analysis; Magnetic levitation; Mathematical model; Optimal control; Robust control; Sliding mode control;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2004. WCICA 2004. Fifth World Congress on

Print_ISBN

0-7803-8273-0

Type

conf

DOI

10.1109/WCICA.2004.1340686

Filename

1340686