Global output feedback stabilization of nonlinear systems with nonlinearity of unmeasured states

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    Abstract

    This technical note deals with global stabilization of class of nonlinear dynamic systems using output feedback. The systems considered have nonlinear functions of unmeasured state variables, in addition to nonlinear functions of the system outputs. A nonlinear reduced order observer is proposed to estimate the unknown system states. Estimated state variables are used for control design, together with the system output. Certain conditions are identified for the proposed observer and control design. Under these conditions, the proposed control design ensures the global asymptotic stability of the closed-loop control system. © 2009 IEEE.
    Original languageEnglish
    Pages (from-to)1117-1122
    Number of pages5
    JournalIEEE Transactions on Automatic Control
    Volume54
    Issue number5
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Backstepping
    • Nonlinear systems
    • Observer
    • Output feedback
    • Stabilization
    • Unmeasured states

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