This paper describes the development an analysis of robust, multi-variable Hinfinity control systems for the conversion of the high-speed autonomous rotorcraft vehicle (HARVee), an experimental tilt-wing aircraft. Tilt-wing aircraft combine the high-speed cruise capabilities of a conventional airplane with the vertical takeoff and station keeping abilities of a helicopter by rotating their wings at the fuselage. Changing between cruise and hover flight modes in mid-air is referred to as the conversion process, or simply conversion. A nonlinear aerodynamic model was previously developed that captures the unique dynamics of the tilt-wing aircraft. An Hinfinity design methodology was used to develop linear controllers along various operating points of a conversion trajectory. The development of these control systems was governed not only by performance specifications at each particular operating point, but also by the unique requirements of a gain-scheduled conversion control system. The performance of the resulting conversion closed-loop systems is analyzed in the frequency and time domains. Performance robustness with respect to parametric uncertainties has been studied for expected types of perturbations.


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    Title :

    Robust Hinfinity gain-scheduled conversion for a tilt-wing rotorcraft


    Contributors:
    Dickeson, J.J. (author) / Cifdaloz, O. (author) / Miles, D.W. (author) / Koziol, P.M. (author) / Wells, V.L. (author) / Rodriguez, A.A. (author)


    Publication date :

    2006


    Size :

    6 Seiten, 18 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






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