Title :
Global tracking output-feedback sliding mode control design via norm estimators and variable high gain observer
Author :
Peixoto, Alessandro Jacoud ; Oliveira, Tiago Roux ; Hsu, Liu
Author_Institution :
Dept. of Electr. Eng., Fed. Center of Technol. Celso Suckow da Fonseca, Rio de Janeiro, Brazil
Abstract :
An output-feedback sliding mode controller is proposed for a widely general class of single-input-single-output (SISO) time-varying uncertain nonlinear systems. Such a class encompasses plants in the state-of-the-art of global output-feedback control framework, possibly including strong polynomial nonlinearities in the unmeasured states. The sliding surface is generated by using the state of a high gain observer (HGO) while the control signal amplitude is obtained from norm estimators (or observers) free of peaking. The proposed scheme achieves global tracking by means of a time-varying HGO gain synthesized from measurable signals.
Keywords :
control nonlinearities; control system synthesis; feedback; nonlinear control systems; observers; time-varying systems; uncertain systems; variable structure systems; global tracking output-feedback; norm estimators; polynomial nonlinearities; single-input-single-output system; sliding mode control design; time-varying systems; uncertain nonlinear systems; variable high gain observer; Control nonlinearities; Control systems; Gain; Nonlinear control systems; Nonlinear systems; Observers; Polynomials; Signal generators; Sliding mode control; Time varying systems;
Conference_Titel :
Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3871-6
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2009.5400929
