Title

Global stabilization and convergence of nonlinear systems with uncertain exogenous dynamics

Authors

Authors

Z. H. Qu

Comments

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Abbreviated Journal Title

IEEE Trans. Autom. Control

Keywords

exosystem; Lyapunov direct method; robust control; uncertainty; estimation; ROBUST-CONTROL; ADAPTIVE-CONTROL; PARAMETERIZATION; FEEDBACK; Automation & Control Systems; Engineering, Electrical & Electronic

Abstract

In this note, a class of nonlinear uncertain systems are considered, and uncertainties in the systems are assumed to be generated by exogenous dynamics. Robust control is designed by employing nonlinear observers to estimate the uncertainties. It is shown that, if a partial knowledge of the exogenous system is available and its known dynamics meet certain conditions or if input channel of the plant has certain properties, global stability and global estimation convergence can be achieved. In the latter case, the results on stability and convergence hold even if exogenous dynamics are completely unknown but bounded by some known function.

Journal Title

Ieee Transactions on Automatic Control

Volume

49

Issue/Number

10

Publication Date

1-1-2004

Document Type

Article

Language

English

First Page

1852

Last Page

1858

WOS Identifier

WOS:000224350000036

ISSN

0018-9286

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