An estimation device for estimating a friction coefficient of a road surface and a steering device capable of appropriately estimating the friction coefficient of the road surface even during the normal traveling in which the time response delay is small and the tire force is small are provided. An estimation device for estimating a friction coefficient of a road surface includes a wheel acting force sensor (200) configured to detect a force acting on a wheel; a moment calculator configured to calculate a moment Mtz around a vertical axis at a center of a ground contact load of a tire of the wheel on a basis of an output of the wheel acting force sensor; and a friction coefficient estimator (300) configured to estimate the friction coefficient of the road surface with which the tire is in contact, on a basis of the moment.

    提供一种路面摩擦系数推定装置及转向装置,即使在时间响应延迟小且轮胎产生力小的通常行驶时,也能够适当地推定路面的摩擦系数。路面摩擦系数推定装置包括:车轮作用力传感器(200),检测对车轮的作用力;力矩计算部,基于所述车轮作用力传感器的输出来计算绕轮胎的接地载荷中心处的铅锤轴线的力矩Mtz;以及摩擦系数推定部(300),基于所述力矩来推定所述轮胎所接地的路面的摩擦系数。


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    Title :

    Estimation device for estimating friction coefficient of road surface and steering device


    Additional title:

    路面摩擦系数推定装置及转向装置


    Contributors:

    Publication date :

    2021-10-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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