A road surface friction coefficient estimating device (40; 102) includes an electronic control unit. The electronic control unit is configured to: compute a system noise variance value as an index indicating a degree of variation in a road surface friction coefficient estimation value; compute an observation noise variance value as an index indicating a degree of variation in observation noise; compute, with regard to an observation deviation, an index indicating a degree of shift of the observation deviation that is newly obtained as to an index indicating a degree of past variation in the observation deviation; compute the index as a friction coefficient change amount; compute a Kalman gain; and add in the friction coefficient change amount when computing the system noise variance value.Selected Drawing: FIG. 3


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    Title :

    ROAD SURFACE FRICTION COEFFICIENT ESTIMATING DEVICE


    Additional title:

    VORRICHTUNG ZUR SCHÄTZUNG DES REIBUNGSKOEFFIZIENTEN VON STRASSENOBERFLÄCHEN
    DISPOSITIF D'ESTIMATION DU COEFFICIENT DE FROTTEMENT D'UNE SURFACE DE ROUTE


    Contributors:

    Publication date :

    2021-10-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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