A learning function is configured to determine a plurality of piecewise linear function coefficients (126) based on measured data for an electric power-assisted steering (EPS) system. The measured data include a vehicle speed. The learning function is further configured to model a hysteresis loop of the EPS system using a piecewise linear function based on the plurality of piecewise linear function coefficients (126) to determine an average friction. An average friction change compensator (106) is configured to adjust friction-based EPS system compensation based on the average friction for a plurality of vehicle speed intervals of the vehicle speed.


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    Title :

    Average friction learning and average friction change estimation


    Additional title:

    Funktion zur Ermittlung und Abschätzung der Durchschnittlichen Reibung im Lenksystem
    Fonction d'identifier et d'évaluer le frottement moyen dans le système de direction


    Contributors:
    YANG TAO (author) / EICKHOLT MICHAEL (author) / KLEIN STEVE (author) / KAUFMANN TIM (author) / POPY NIHARIKA P (author)

    Publication date :

    2019-09-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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