The friction between tire and road is the most important information for vehicle safety systems. Most of the conventional friction estimation methods, however, work only unstable region. In this paper, a friction estimation method using a tire torsional vibration model is proposed. It is based on the frequency characteristics of the wheel speed vibration which are related to the friction. The instrumental variable method is applied for on-line estimation. The experimental result shows that the proposed method applied to free rolling tire detects friction change from dry asphalt to iced road at constant speed, as well as a hydroplaning phenomenon.


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    Title :

    Estimation of tire-road friction based on tire torsional resonance


    Additional title:

    Schätzung der Straße-Reifen-Reibung auf Basis der Reifen-Torsionsresonanz


    Contributors:

    Published in:

    Publication date :

    2004


    Size :

    5 Seiten, 10 Bilder, 4 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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