Decoupling control algorithm of magnetic suspension system based on current optimization

Author

Jiaji Zhang ; Xuesong Mei ; Dongsheng Zhang

Author_Institution

Sch. of Mech. Eng., Xi´an Jiaotong Univ., Xi´an

fYear

2008

fDate

25-27 June 2008

Firstpage

449

Lastpage

454

Abstract

A new decoupling algorithm is developed to decouple and linearize the nonlinear magnetic suspension system based on current optimization and feedback linearization. Golden section method is applied in the current optimal algorithm to search for the idea current of each coil. In order to control the control voltage on each coil to track the idea current as quickly as possible, 3-step current algorithm is used to improve the response speed and precision of the magnetic suspension actuator. The real-time of decoupling algorithm is verified by numerical experiment on PC. Phase-lead controller is then designed and implemented for each three resulting motions. Experimental results are presented to illustrate the performance of the system dynamic response, current response in each coil.

Keywords

feedback; magnetic levitation; motion control; nonlinear control systems; optimisation; suspensions (mechanical components); current optimization; decoupling control algorithm; feedback linearization; golden section method; nonlinear magnetic suspension system; phase-lead controller; Coils; Control systems; Force control; Force feedback; Iron; Linear feedback control systems; Magnetic levitation; Mechanical engineering; Piezoelectric actuators; Voltage control; current optimization; feedback linearization; magnetic suspension; precision control;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control and Automation, 2008. WCICA 2008. 7th World Congress on

Conference_Location

Chongqing

Print_ISBN

978-1-4244-2113-8

Electronic_ISBN

978-1-4244-2114-5

Type

conf

DOI

10.1109/WCICA.2008.4592966

Filename

4592966