This paper discusses practical aspects of performing on-orbit modal identification using time domain analysis of free-decay data. The effects of environmental constraints, structural characteristics, excitation, and sensing are reviewed. In a recent laboratory application, an on-orbit experiment is simulated using a limited number of excitation and measurement points. The identified modal parameters correlate well, though not uniquely, with those obtained in a complete modal survey. Practical difficulties in performing the correlation are illustrated.


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    Title :

    Practical aspects of on-orbit modal identification using free-decay data


    Contributors:


    Publication date :

    1992-04-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English






    Free-decay time-domain modal identification for large space structures

    KIM, HYOUNG / VANHORN, DAVID / DOIRON, HAROLD | AIAA | 1992


    Free-decay time-domain modal identification for large space structures

    Kim, Hyoung M. / VanHorn, David A. / Doiron, Harold H. | AIAA | 1994