This paper presents a control algorithm for semi-active suspensions to reduce the braking distance of passenger cars. Active shock absorbers are controlled and used to influence the vertical dynamics during ABS-controlled full braking.The core of the approach presented in this paper is based on a switching control logic which sets the car's body damping to one of the two extrema hard and soft. The control algorithm is implemented in a compact class passenger car. Test drives on a real road, using a braking machine for reproducibility reasons, have been executed.It could be shown that it is possible to reduce the braking distance by affecting on the vertical dynamics of a passenger car in general. This is the first published experimental result of its kind. The amount of reduction depends on the height profile of the testing track. On a road with an unevenness comparable to the one on a typical German Autobahn a reduction of typically 1.3 %, compared to the best passive damping, was achieved. On a very rough road, the average braking distance was reduced by 3.5 %, compared to the best passive damping.


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    Titel :

    A New Slip Controller to Reduce Braking Distance by Means of Active Shock Absorbers


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Winner, Hermann (Autor:in) / Reul, Marcus (Autor:in) / Niemz, Tobias (Autor:in)

    Kongress:

    Asia Pacific Automotive Engineering Conference ; 2007



    Erscheinungsdatum :

    2007-08-05




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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