In this paper, based on the Lagrange method, attitude motion equations for a flexible spacecraft have been derived. Flexible appendages are modeled by Euler-Bernoulli beam. Hybrid control scheme ofand sliding mode are used for attitude regulation. Switching between these to algorithm is determined using absolute error parameter, so that when this parameter is large (i.e. the attitude is far from its desired conditions) the sliding mode control is used. in contrast, when the spacecraft is close to the desired attitude, the control is based onmethod. This hybrid scheme leads to a fast response and also robustness against uncertainty. Switching surface has been designed so that a certain cost function is minimized. Incontroller design, the first three vibration modes of the flexible spacecraft are considered as well as the Euler angles and their rates.


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    Titel :

    Flexible Spacecraft Attitude Control using Hybrid Control Scheme of Hâ and Sliding Mode Control


    Beteiligte:
    M. Sayanjali (Autor:in) / J. Roshanian (Autor:in) / A. Ghafari (Autor:in)


    Erscheinungsdatum :

    2008



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




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