Continuous Robust Control for Two-Dimensional Airfoils with Leading- and Trailing-Edge Flaps

    Authors

    Z. Wang; A. Behal;P. Marzocca

    Comments

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    Abbreviated Journal Title

    J. Guid. Control Dyn.

    Keywords

    OUTPUT-FEEDBACK CONTROL; ACTIVE CONTROL TECHNOLOGY; AEROELASTIC; VIBRATION SUPPRESSION; MIMO NONLINEAR-SYSTEMS; ADAPTIVE-CONTROL; WING; SECTION; CONTROL DESIGN; GAIN MATRIX; SURFACES; Engineering, Aerospace; Instruments & Instrumentation

    Abstract

    In this paper, a class of multi-input/multi-output aeroelastic systems with unstructured nonlinear uncerta inty is considered. By using leading- and trailing-edge control surface actuations, a continuous robust controller is proposed to suppress the aeroelastic vibrations of a nonlinear wing-section model with plunging and pitching degrees of freedom. Under a mild restriction that the system uncertainties are second-order differentiable, the control design yields a semiglobal asymptotic stability result, leading to rapid suppression of the plunging and pitching motions. Numerical simulation results demonstrate the performance of the multi-input/multi-output continuous robust control toward suppressing aeroelastic vibration and limit cycle oscillations at pre- and postflutter flight speed regimes, even in the presence of bounded unknown external disturbance.

    Journal Title

    Journal of Guidance Control and Dynamics

    Volume

    35

    Issue/Number

    2

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    510

    Last Page

    519

    WOS Identifier

    WOS:000301631100015

    ISSN

    0731-5090

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