Adaptive output feedback control of nonlinear systems with input unmodeled dynamics

Author

Jiasheng Chen ; Tianping Zhang ; Xiaonan Xia ; Qin Wang

Author_Institution

Dept. of Autom., Yangzhou Univ., Yangzhou, China

fYear

2015

fDate

23-25 May 2015

Firstpage

1303

Lastpage

1308

Abstract

In this paper, an adaptive dynamic surface control scheme is proposed for a class of output feedback systems with input unmodeled dynamics. By constructing the state observer, unmeasurable states are estimated. By introducing the first order filter in traditional backstepping design, the repeated differentiations of virtual control is avoided. Using dynamic surface control, the disturbances induced by input unmodeled dynamics and unknown continuous function are effectively dealt with. By theoretical analysis, it is shown that all the signals in the closed-loop system are semi-global uniformly ultimately bounded.

Keywords

adaptive control; closed loop systems; feedback; filtering theory; nonlinear systems; observers; adaptive dynamic surface control scheme; adaptive output feedback control; backstepping design; closed-loop system; first order filter; input unmodeled dynamics; nonlinear systems; output feedback system; semiglobal uniformly ultimately bounded signals; state observer; unknown continuous function; unmeasurable state estimation; virtual control; Adaptive control; Backstepping; Nonlinear dynamical systems; Observers; Output feedback; Input unmodeled dynamics; adaptive control; dynamic surface control; output feedback system;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2015 27th Chinese

Conference_Location

Qingdao

Print_ISBN

978-1-4799-7016-2

Type

conf

DOI

10.1109/CCDC.2015.7162120

Filename

7162120