Application of ILQ-based frequency-shaping control to a magnetic levitation system

Author

Sakai, Masaya ; Kuroe, Yuuki ; Nakashima, Ken Ichi ; Fujii, Takao

Author_Institution

Dept. of Syst. & Human Sci., Osaka Univ., Japan

Volume

1

fYear

1998

fDate

1-4 Sep 1998

Firstpage

593

Abstract

We deal with a magnetic levitation system with a Y shape iron plate as a levitated vehicle. The control problem is to suppress a spillover due to unmodeled dynamics. This problem has been solved by a high order H_∞ controller. Here, we solve it by designing an observer-based stabilizing controller based on ILQ servo design method. The design is carried out by specifying two frequency responses for tracking and noise suppression asymptotically as the gain tuning parameters tend to infinity. As a result, a lower order controller suppressing the spillover is obtained and its efficiency is confirmed by experiment

Keywords

closed loop systems; control system synthesis; dynamics; frequency response; function approximation; linear quadratic Gaussian control; magnetic levitation; observers; tracking; transfer functions; ILQ design; LQG control; closed loop systems; dynamics; frequency responses; frequency-shaping control; function approximation; linear quadratic Gaussian control; magnetic levitation system; noise suppression; observer; spillover control; tracking; transfer function; Control systems; Design methodology; Filters; Frequency; Iron; Magnetic levitation; Noise shaping; Servomechanisms; Shape control; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1998. Proceedings of the 1998 IEEE International Conference on

Conference_Location

Trieste

Print_ISBN

0-7803-4104-X

Type

conf

DOI

10.1109/CCA.1998.728542

Filename

728542