The attitude control of an observation satellite, which exhibits highly uncertain lightly damped modes, is designed by loop-shaping H(sub infinity) design. Minimum-order controllers solving an LMI (Linear Matrix Inequality) formulation of the problem are sought, using a cone complementarity linearization algorithm. For different control laws, it is explained why the procedure leads to very low-order controllers. To analyze the stability robustness of the control law, different structured singular-value upper bounds and fitting characterizations of sets of uncertainties allow the computational cost of a mixed micro-analysis procedure to be minimized. Finally, the performance of the control law is studied on a nonlinear simulator.


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    Title :

    Low-order robust attitude control of an earth observation satellite


    Additional title:

    Robuste Flugregelung eines Erdsatelliten mit niedriger Reglerordnung


    Contributors:

    Published in:

    Publication date :

    1999


    Size :

    14 Seiten, 18 Bilder, 1 Tabelle, 21 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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