In order to provide a method and a device capable of precisely estimating a load acting on a tire with less sensors, a load estimation device 10 for estimating the load acting on the tire is provided with: an acceleration sensor 11; an acceleration waveform detection means 13 that detects an acceleration waveform in a tire radial direction on the basis of an output of the acceleration sensor 11; a differential acceleration waveform computing means 14 that differentiates the acceleration waveform to obtain a differential acceleration waveform; a peak position detection means 15 that detects a position of a peak on a leading edge side and a position of a peak on a trailing edge side appearing in the differential acceleration waveform; a ground contact time ratio calculation means 16 that calculates a ground contact time and a rotation time on the basis of the peak positions and calculates a ground contact time ratio, which is a ratio between the calculated ground contact time and the rotation time; and a load estimation means 19 that estimates the load acting on the tire on the basis of the calculated ground contact time ratio and a K-W map 18M representing a relationship between the calculated ground contact time ratio stored in a storage means 18 and the load.
TIRE LOAD ESTIMATION METHOD AND TIRE LOAD ESTIMATION DEVICE
VERFAHREN ZUR KALKULATION DER REIFENLAST UND VORRICHTUNG ZUR KALKULATION DER REIFENLAST
PROCÉDÉ ET DISPOSITIF D'ESTIMATION DE LA CHARGE D'UN PNEU
2020-04-29
Patent
Electronic Resource
English
IPC: | G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / B60C VEHICLE TYRES , Fahrzeugreifen / G01G Wägen , WEIGHING / 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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