To accurately estimate cornering power with a simple configuration.SOLUTION: A tire state quantity estimation device (1) acquires generated force of a tire and a friction coefficient between the tire and a road surface (11), estimates a tire contact length in an uncontrolled drive state in which generated force generated in a front-rear direction of the tire, of the generated force of the tire, is a predetermined threshold value or less on the basis of the generated force of the tire and a grip margin of the tire derived based on the acquired generated force of the tire and the acquired friction coefficient (10), and estimates cornering power of the tire on the basis of the estimated tire contact length and the acquired generated force of the tire (23).SELECTED DRAWING: Figure 1
【課題】簡単な構成で、正確にコーナリングパワーを推定する。【解決手段】タイヤ状態量推定装置(1)は、タイヤの発生力、及びタイヤと路面との間の摩擦係数を取得し(11)、取得されたタイヤの発生力及び摩擦係数に基づき導出されたタイヤのグリップ余裕度とタイヤの発生力とに基づいて、タイヤの発生力のうちのタイヤの前後方向に発生する発生力が予め定めた閾値以下の非制駆動状態におけるタイヤの接地長を推定し(10)、推定されたタイヤの接地長と、取得されたタイヤの発生力とに基づいて、タイヤのコーナリングパワーを推定する(23)。【選択図】図1
TIRE STATE QUANTITY ESTIMATION DEVICE, TIRE STATE QUANTITY ESTIMATION METHOD, AND TIRE STATE QUANTITY ESTIMATION PROGRAM
タイヤ状態量推定装置、タイヤ状態量推定方法及びタイヤ状態量推定プログラム
2021-10-11
Patent
Electronic Resource
Japanese
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 / 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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