Decoupling control for a 5-DoF rotor supported by active magnetic bearings

Author

Cao, Jianrong ; Chen, Quanshi

Author_Institution

State Key Lab. of Automotive Safety & Energy, Tsinghua Univ., Beijing, China

Volume

2

fYear

2003

fDate

9-11 Nov. 2003

Firstpage

477

Abstract

Decoupling control approach has been developed for a nonlinear system with a rotor of five degree-of-freedom supported by two radial magnetic bearings. Nonlinear controllers based on dynamic feedback linearization are designed such that the strongly coupled rotor motion is reduced to five decoupled normalization linear subsystems including four rotor displacements and its speed. The linearized systems improve the transient responses of the system. Some simulations are employed, and satisfactory performance of the decoupled system is obtained.

Keywords

controllers; linearisation techniques; machine bearings; machine control; magnetic bearings; nonlinear control systems; rotors; transient response; DoF rotor; coupled rotor motion; decoupled normalization linear subsystem; decoupling control; degree of freedom rotor; dynamic feedback linearization; nonlinear controller; radial magnetic bearing; transient response; Control systems; Couplings; Displacement control; Magnetic levitation; Nonlinear control systems; Nonlinear dynamical systems; Nonlinear systems; PD control; Proportional control; Three-term control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2003. ICEMS 2003. Sixth International Conference on

Conference_Location

Beijing, China

Print_ISBN

7-5062-6210-X

Type

conf

Filename

1274084