This paper describes a state adaptive control method for vehicle suspensions proposed by Hitachi, Ltd. The objective of the control is to improve riding comfort and driving stability in reaction to road iregularities, exterior wind forces, and changes in vehicle loads as well as in reaction to inertial changes during cornering, breaking, and accelerating. The objective is attained by making considerable use of the relative displacement data between the body and the suspension. The state adaptive control system includes four shock absorbers whose damping forces can be tuned in three stages, four height sensors which measure the relative displacement, a vehicle speed sensor, and a microcomputer which decides the optimal damper stage. The validity of the proposed control method is shown through computer simulations and actual driving experiments. Vertical acceleration is reduced by about 55 % by switching from the soft damper to the hard damper in a computer simulation.


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    Titel :

    A State Adaptive Control Algorism for Vehicle Suspensions


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Shioya, Makoto (Autor:in) / Adachi, Masao (Autor:in) / Funabashi, Motohisa (Autor:in) / Naito, Shotaro (Autor:in)

    Kongress:

    Passenger Car Meeting & Exposition ; 1988



    Erscheinungsdatum :

    01.11.1988




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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