Output feedback in variable structure systems with a simple adaption law

Author

Wang, Wen-June ; Fan, Yang-Ta

Author_Institution

Inst. of Comput. Sci. & Electron. Eng., Nat. Central Univ., Chung-Li, Taiwan

fYear

1993

fDate

15-17 Dec 1993

Firstpage

422

Abstract

This note proposes an output feedback variable structure control to stabilize a class of uncertain systems, in which the states are unavailable and the upper bounds of uncertainties are unknown. Under a certain condition, the sliding (switching) hyperplanes are chosen to stabilize the reduced order equivalent system in the sliding mode. Further, based on an improved Lyapunov function, the controller gain is obtained by a simple adaptation law without any knowledge of the system dynamics such that the stability of the sliding mode is ensured. Finally, a practical aircraft model is given to illustrate this design approach

Keywords

Lyapunov methods; adaptive control; aircraft control; feedback; stability; variable structure systems; Lyapunov function; output feedback; practical aircraft model; simple adaptation law; sliding hyperplanes; sliding mode; stabilization; switching hyperplanes; uncertain systems; uncertainty upper bounds; variable structure systems; Aircraft; Control systems; Lyapunov method; Output feedback; Sliding mode control; Stability; Uncertain systems; Uncertainty; Upper bound; Variable structure systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1993., Proceedings of the 32nd IEEE Conference on

Conference_Location

San Antonio, TX

Print_ISBN

0-7803-1298-8

Type

conf

DOI

10.1109/CDC.1993.325113

Filename

325113