We consider the efficient solution of the coprime factorization based H infinity controller approximation problems by using frequency-weighted balancing related model reduction approaches. It is shown that for a class of frequency-weighted performance preserving coprime factor reduction as well as for a relative error coprime factor reduction method, the computation of the frequency-weighted controllability and observability grammians can be done by solving Lyapunov equations of the order of the controller. The new approach can be used in conjunction with accuracy enhancing square-root and balancing-free techniques developed for the balancing related coprime factors based model reduction.


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    Title :

    Coprime Factor Reduction of H-infinity Controllers


    Contributors:

    Conference:

    2003 ; Cambridge (UK)


    Publication date :

    2003-05-01


    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





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