An Observer Controller for an Active Magnetic Bearing System Exhibiting Unbalanced Mass

Author

Seng-Chi Chen ; Dinh-Kha Le ; Van-Sum Nguyen

Author_Institution

Dept. of Electr. Eng., Da-Yeh Univ., Changhua, Taiwan

fYear

2014

fDate

10-12 June 2014

Firstpage

753

Lastpage

756

Abstract

An Active magnetic bearing (AMB) system supports a rotating shaft, by using electromagnetic forces, requiring no physical contact. In this study, an observer controller is proposed the displacement of rotor in the air gap of an AMB system. The controller was designed using pole placements and an observer controller to estimate the states that could not be measured or were affected by noise. Regarding the simulation of the controlled system, a MATLAB toolbox was used. The simulation results for the state variable and rotor displacement were satisfactory. This method can be applied to improve the control of nonlinear systems. This controller also satisfies the requirements of real-time response and stability for use in systems exhibiting unbalanced mass disturbances.

Keywords

magnetic bearings; magnetic variables control; nonlinear control systems; observers; poles and zeros; shafts; AMB system; MATLAB toolbox; active magnetic bearing system; electromagnetic forces; nonlinear systems; observer controller; pole placements; rotating shaft; rotor displacement; state variable; Acceleration; Control systems; Magnetic levitation; Noise; Observers; Rotors; Shafts; Active magnetic bearing (AMB); estimator controller; observer controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer, Consumer and Control (IS3C), 2014 International Symposium on

Conference_Location

Taichung

Type

conf

DOI

10.1109/IS3C.2014.200

Filename

6845992