Global stabilization and convergence of nonlinear systems with uncertain exogenous dynamics

    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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