The aim of the paper is to compare the respective advantages of time-domain robust linear quadratic and frequency-domain Hinfinity control laws in the presence of real parametric and frequency-dependent uncertainties. Design-application considerations for each method are also offered. For the time-domain design, the LQL method is used, which is a minimax robust state estimation-maximin state feedback closed-loop control scheme for linear systems with L2 bounded uncertainties. For comparison, the frequency-domain mixed-sensitivity Hinfinity approach is also examined. To improve its poor parametric robustness owing to LHP pole-zero cancellation property of Hinfinity controllers, increasing system bandwidth and inner-loop feedback enhancing the damping are applied simultaneously. The context of this design comparison is the HIT-3T2 flight simulator. The simulation results, once again, reveal the close relationship of LQL and Hinfinity control synthesis on the basis of game theory.


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    Titel :

    Case study comparison of robust linear quadratic design and mixed-sensitivity Hinfinity control


    Beteiligte:
    Chen, S.B. (Autor:in) / Fan, Y.H. (Autor:in) / Zhang, F.E. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1997


    Format / Umfang :

    5 Seiten, 11 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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