To provide an abrasion state estimation device which can estimate the abrasion state of a tire without acquiring a large number of tire data in advance.SOLUTION: A tire abrasion state estimation device comprises: a rotational speed acquisition unit; a driving force acquisition unit; a slip ratio calculation unit; a coefficient calculation unit; and an estimation unit. The rotational speed acquisition unit sequentially acquires the rotational speed of a tire attached to a vehicle. The driving force acquisition unit sequentially acquires the driving force of the vehicle. The slip ratio calculation unit calculates a slip ratio on the basis of the sequentially-acquired rotational speed of the tire. The coefficient calculation unit calculates a regression coefficient expressing the relation between the slip ratio and the driving force on the basis of a plurality of data sets of the slip ratio and the driving force. The estimation unit estimates the abrasion state of the tire in the time of calculation of the regression coefficient on the basis of a previously-specified constant number, the regression coefficient in the reference time of the tire, the abrasion state of the tire and the calculated regression coefficient.SELECTED DRAWING: Figure 5

    【課題】多数のタイヤのデータを予め取得しなくてもタイヤの摩耗状態を推定可能な摩耗状態推定装置を提供する。【解決手段】タイヤの摩耗状態推定装置は、回転速度取得部と、駆動力取得部と、スリップ比算出部と、係数算出部と、推定部とを備える。回転速度取得部は、車両に装着されたタイヤの回転速度を順次取得する。駆動力取得部は、前記車両の駆動力を順次取得する。スリップ比算出部は、前記順次取得されるタイヤの回転速度に基づいて、スリップ比を算出する。係数算出部は、前記スリップ比及び前記駆動力の複数のデータセットに基づいて、前記スリップ比と前記駆動力との関係を表す回帰係数を算出する。推定部は、予め特定された定数と、前記タイヤの基準時における前記回帰係数及び前記タイヤの摩耗状態と、前記算出される回帰係数とに基づいて、前記回帰係数の算出時における前記タイヤの摩耗状態を推定する。【選択図】図5


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    Title :

    TIRE ABRASION STATE ESTIMATION DEVICE


    Additional title:

    タイヤの摩耗状態推定装置


    Contributors:

    Publication date :

    2023-11-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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





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