With a sufficiently great number of sensors and actuators, any finite dimensional dynamic system is identifiable on the basis of input-output data. It is presently indicated that, for conservative nongyroscopic linear mechanical systems, the number of sensors and actuators required for identifiability is very large, where 'identifiability' is understood as a unique determination of the mass and stiffness matrices. The required number of sensors and actuators drops by a factor of two, given a relaxation of the identifiability criterion so that identification can fail only if the system parameters being identified lie in a set of measure zero. When the mass matrix is known a priori, this additional information does not significantly affect the requirements for guaranteed identifiability, though the number of parameters to be determined is reduced by a factor of two.


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    Titel :

    Identifiability of conservative linear mechanical systems


    Beteiligte:
    Sirlin, S. W. (Autor:in) / Longman, R. W. (Autor:in) / Juang, J. N. (Autor:in)


    Erscheinungsdatum :

    1985-03-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch




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