The author derives analytical expressions for the Grammians of a model given in modal coordinates for the dynamics of a flexible space structure (FSS). These expressions are then used as the basis for a new algorithm to compute a dominant reduced-order model for such a system in an efficient manner. The resulting reduced-order model is obtained directly rather than by truncating a balanced model of the entire system, thus giving rise to significant efficiency gains for the typical FSS case where the reduced-order model is of very much lower order than the original system.


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    Title :

    Closed-form Grammians and model reduction for flexible space structures


    Additional title:

    Geschlossene Form der Gramschen Matrix und Modellreduktion für flexible Raumfahrtstrukturen


    Contributors:

    Published in:

    Publication date :

    1990


    Size :

    4 Seiten, 20 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Grammians and model reduction in limited time and frequency intervals

    GAWRONSKI, WODEK / JUANG, JER-NAN | AIAA | 1988


    Model reduction for flexible space structures

    Gawronski, Wodek / Williams, Trevor | NTRS | 1989


    Model reduction for flexible space structures

    GAWRONSKI, WODEK / WILLIAMS, TREVOR | AIAA | 1989


    Model reduction for flexible space structures

    Gawronski, Wodek / Williams, Trevor | NTRS | 1991


    Model reduction for flexible space structures

    GAWRONSKI, WODEK / WILLIAMS, TREVOR | AIAA | 1991