The robust stability of an active flexible wing section with leading- and trailing-edge control surfaces is further investigated via the μ-method. Motivated by a more detailed servo control dynamics, the two controllers K1 and K2, which command the deflections of the trailing-edge flap and the leading-edge flap respectively, are modeled as two second-order shock absorbers in this study. The nominal and robust stability margins, modal properties, critical flutter airspeeds and frequencies are computed to predict the flutter of a nonlinear aeroelastic system and to investigate the aeroservoelastic stability in the μ-framework. The simulation results are compared with the previous study of which the controllers were modeled as the simplified (first-order) shock absorbers. The improved sensitivity to detect the control-structure coupling is observed by applying the second-order shock absorbers in the ASE model.


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    Title :

    Robust Analysis of Active Flutter Suppression Using Multiple Control Surfaces via Second-Order Controllers


    Additional title:

    Sae Technical Papers


    Contributors:
    Teng, Ying (author)

    Conference:

    Aerospace Technology Conference and Exposition ; 2007



    Publication date :

    2007-09-17




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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