Reaction wheels are main actuators of satellite attitude control systems. If a mechanical failure of one out of four reaction wheels occurs, it should be detected quickly and the controller need be reconfigured to restore three-axis control using healthy reaction wheels. To realize fault tolerant control, a predictive filter is applied to obtain information of states and faults. Considering the actual reaction torques on wheels as unknown inputs, they can be estimated by a predictive filter with states. Based on this algorithm wheel faults can be diagnosed. In this paper, a controller reconfiguration structure using a predictive filter is presented and the usefulness of this method is illustrated by a simulation to a three-axis stable attitude control system of a satellite.


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    Titel :

    Controller reconfiguration against reaction wheel failure based on predictive filters


    Beteiligte:
    Ji Li, (Autor:in) / Hong-Yue Zhang, (Autor:in)


    Erscheinungsdatum :

    01.01.2006


    Format / Umfang :

    2845829 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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