A device for estimating a condition of a road surface on which a tire is travelling, the device including: an acceleration sensor 11 that detects acceleration in a tire radial direction, an acceleration waveform extracting unit 12 that extracts an acceleration waveform from the acceleration, a differential waveform calculating unit 13 that calculates a differential waveform of the acceleration waveform, a rotation time calculating unit 14 that calculates a rotation time of the tire from the differential waveform, a normalized acceleration waveform generating unit 15 that generates a normalized acceleration waveform by using the rotation time, and a road surface condition estimating unit 16 that determines whether or not a water infiltration condition between the tire and the road surface is in a condition to be shifted to a hydroplaning condition.
ROAD SURFACE CONDITION ESTIMATION METHOD AND ROAD SURFACE CONDITION ESTIMATION DEVICE
VERFAHREN ZUR BEURTEILUNG DES STRASSENOBERFLÄCHENZUSTANDS UND VORRICHTUNG ZUR BEURTEILUNG DES STRASSENOBERFLÄCHENZUSTANDS
PROCÉDÉ D'ÉVALUATION D'ÉTAT DE REVÊTEMENT ROUTIER ET DISPOSITIF D'ESTIMATION D'ÉTAT DE REVÊTEMENT ROUTIER
2024-05-01
Patent
Electronic Resource
English
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 / 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 |
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