Decoupling Control of Magnetically Levitated Induction Motor with Inverse System Theory

Author

Zhou, Yang ; Zhu, Huangqiu ; Li, Tianbo

Author_Institution

Sch. of Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang

Volume

3

fYear

2006

fDate

14-16 Aug. 2006

Firstpage

1

Lastpage

5

Abstract

A magnetically levitated induction motor is a multivariable, nonlinear and strong coupling system. In order to achieve the rotor suspending and working steadily, it is necessary to realize dynamic decoupling control between torque force and radial suspension forces. In this paper, a method based on inverse system theory is used to study on decoupling control of magnetically levitated induction motors. Firstly, the working principle of radial suspension forces is expounded, and then the state equations of this motor are set up. Secondly, feasibility of decoupling control based on inversion theory for magnetically levitated induction motor is discussed in detail, and the dynamic feedback linearization method of system decoupling and linearizing is used. Finally, linear control system techniques are applied to these linearization subsystems to synthesize and simulate. The simulation results have shown that this kind of control strategy can realize dynamic decoupling control between torque force and radial suspension forces, and the control system has fine dynamic and static performance

Keywords

control system synthesis; dynamic response; feedback; induction motors; linearisation techniques; machine control; magnetic levitation; multivariable control systems; nonlinear control systems; nonlinear dynamical systems; rotors; torque; dynamic decoupling control; dynamic feedback linearization method; inverse system theory; linear control system techniques; linearization subsystems; magnetically levitated induction motor; multivariable nonlinear coupling system; radial suspension forces; rotor; torque force; Control system synthesis; Control systems; Couplings; Equations; Force control; Induction motors; Magnetic levitation; Nonlinear dynamical systems; Rotors; Torque control; decoupling control; dynamic feedback linearization; inverse system; magnetically levitated induction motor;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International

Conference_Location

Shanghai

Print_ISBN

1-4244-0448-7

Type

conf

DOI

10.1109/IPEMC.2006.4778341

Filename

4778341