On The State Observation And Output-Feedback Problems For Nonlinear Uncertain Dynamic-Systems

    Authors

    D. M. Dawson; Z. Qu;J. C. Carroll

    Comments

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    Abbreviated Journal Title

    Syst. Control Lett.

    Keywords

    ROBUST CONTROL; OBSERVER; OUTPUT FEEDBACK; NONLINEAR SYSTEMS; EXPONENTIAL CONVERGENCE; OBSERVERS; Automation & Control Systems; Operations Research & Management Science

    Abstract

    In this paper, we examine the problems of state observation and state trajectory control by output feedback for the class of non-linear systems in [3,11]. We begin by modifying a known discontinuous variable structure type observer into a continuous type observer that guarantees the observation error is Globally Exponentially Stable (GES). We then modify a known discontinuous variable structure type output feedback controller into continuous type output feedback controller that forces the state to the origin in the GES sense. Specific time-varying bounds on the observation error and the state trajectory are also developed; revealing how the corresponding observer or control parameters can be adjusted to improve the system performance.

    Journal Title

    Systems & Control Letters

    Volume

    18

    Issue/Number

    3

    Publication Date

    1-1-1992

    Document Type

    Article

    Language

    English

    First Page

    217

    Last Page

    222

    WOS Identifier

    WOS:A1992HJ95900008

    ISSN

    0167-6911

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