Modern Control Theory is employed to analytically determine the limit of positional precision with which a helicopter can be hovered. Approaches based on Liapunov's Second Method and a Squared Root Locus Method are formulated to this optimal control problem. Both of these methods avoid iterative solution of the Matrix Riccati Equation. The Squared Root Locus Method is developed as a computer algorithm which generates optimal control designs as a function of performance index and helicopter stability/control derivatives. Practical design constraints can readily be interpreted from the results of this formulation. (Author)


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    Title :

    Optimal Design of Helicopter Precision Hover Control Systems


    Contributors:
    N. N. Purl (author) / R. J. Niemela (author)

    Publication date :

    1973


    Size :

    35 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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