A friction-coefficient-computing device includes: a computing unit that calculates a slip ratio and a friction coefficient; and a maximum-friction-estimating unit that calculates an estimated maximum value of the friction. The maximum-friction-estimating unit includes: a model calculator that calculates a tire model friction, which is a friction coefficient of a tire brush model; and a parameter-estimating unit that estimates values of parameters of a tire brush model expression. The parameter-estimating unit includes a parameter-restricting unit that eliminates values of the parameters that allow the tire brush model expression to be a linear function and a quadratic function, and obtains values of the parameters that allow an inclination of an inflection point of the tire brush model expression to approach zero.


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    Title :

    FRICTION-COEFFICIENT-COMPUTING DEVICE


    Contributors:
    ABE MITSUYASU (author) / KAWAI KEISUKE (author) / KAMIO SHIGERU (author) / LIU HAIBO (author)

    Publication date :

    2024-02-08


    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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung




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