Comparison of controller designs for an experimental flexible structure

Author

Lim, K.B. ; Maghami, P.G. ; Joshi, S.M.

Author_Institution

NASA Langley Res. Center, Hampton, VA, USA

Volume

12

Issue

3

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

108

Lastpage

118

Abstract

Control system design and hardware testing are addressed for an experimental structure displaying the characteristics of a typical large flexible spacecraft. The practical aspects associated with designing and implementing various control design methodologies for a real system are described, and the results are given. The design methodologies under investigation include linear-quadratic-Gaussian (LQG) control, static and dynamic dissipative control, and H/sub infinity / optimal control. The merit of each design is based on its capacity for vibration suppression, its stability robustness characteristics with respect to unmodeled dynamics, and its ease of design and implementation. Among the three controllers considered, it is shown, through computer simulation and laboratory experiments, that the dynamic dissipative controller gives the best results.<>

Keywords

aerospace control; control system synthesis; optimal control; stability; vibration control; H/sub infinity / optimal control; LQG control; aerospace control; control design; dissipative control; flexible space structure; large flexible spacecraft; robustness; stability; vibration suppression; Computer simulation; Control design; Control systems; Design methodology; Hardware; Laboratories; Optimal control; Robust stability; Space vehicles; System testing;

fLanguage

English

Journal_Title

Control Systems, IEEE

Publisher

ieee

ISSN

1066-033X

Type

jour

DOI

10.1109/37.165528

Filename

165528