Literal criteria are developed for the controllability and observability of general models of flexible spacecraft. Results are interpreted in special cases and in physical terms, permitting in some cases the identification of uncontrollable and unobservable states simply by examination of scalars composed of modal parameters and location matrices for sensors and actuators. A procedure is established for isolation of uncontrollable states, whereby sensor and actuator configuration assure that uncontrollable flexible mode states are also unobservable; in many applications such states can then be removed by coordinate truncation.


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    Title :

    The influence of spacecraft flexibility on system controllability and observability


    Contributors:
    Ohkami, Y. (author) / Likins, P. (author)

    Conference:

    International Federation of Automatic Control, Symposium on Automatic Control in Space ; 1974 ; Tsakhkadzor, Soviet Union


    Publication date :

    1974-08-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English