In order to provide a method capable of estimating the degree of wear of a tire while traveling with high accuracy regardless of the wear shape of the tire, the degree of wear of the tire is estimated using an index of the deformation speed at a tire ground contact end or near the tire ground contact end, a ground contact time ratio, and a deflection amount. The index of the deformation speed is calculated on the basis of the magnitude of either or both of a positive peak and a negative peak appearing in a radial acceleration waveform obtained by differentiating a time-series waveform of tire radial acceleration detected by an acceleration sensor attached to the tire. The ground contact time ratio is a ratio of a ground contact time, which is a time interval between the positive peak and the negative peak, to a rotation time of the tire, which is a time interval of either the positive peak or the negative peak. The amount of deflection is a difference between a tire radius, which is a radius when the tire is not loaded, and an effective radius, which is a radius when the tire is traveling.

    为了提供一种能够与轮胎的磨损形状无关地高精度地估计行驶中的轮胎的磨损程度的方法,使用轮胎接地端部或轮胎接地端部附近的变形速度的指标、接地时间比以及挠曲量来估计轮胎的磨损程度,所述变形速度的指标是根据对由安装于所述轮胎的加速度传感器检测出的轮胎径向加速度的时间序列波形进行微分所得到的径向加速度波形中出现的正峰及负峰中的任一方或两方的大小而计算出的,所述接地时间比是作为所述正峰与所述负峰之间的时间间隔的接地时间同作为所述正峰及所述负峰中的任一方的峰的时间间隔的所述轮胎的旋转时间之比,所述挠曲量是作为所述轮胎无载荷时的半径的轮胎半径与作为所述轮胎行驶时的半径的有效半径之差。


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    Title :

    Tire wear estimation method and tire wear shape determination method


    Additional title:

    轮胎磨损估计方法和轮胎磨损形状判别方法


    Contributors:

    Publication date :

    2022-11-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60C VEHICLE TYRES , Fahrzeugreifen



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