The present invention relates to a method and a system (20) for estimating a friction characteristic of a surface beneath a vehicle (22) that has a plurality of wheels (24) contacting the surface. The method includes determining a wheel speed of at least one of the wheels, determining a velocity of the at least one of the wheels separately from determining the wheel speed, determining a wheel slip of the at least one of the wheels based on the determined wheel speed and the determined velocity, and determining the friction characteristic based on the determined wheel slip. Determining the velocity separately from the wheel speed is accomplished using at least one detector (32) that provides an output corresponding to a range rate, such as a RADAR or LIDAR detector.
METHOD AND SYSTEM FOR DRIVING SURFACE FRICTION CHARACTERISTIC DETERMINATION
VERFAHREN UND SYSTEM ZUR BESTIMMUNG DER REIBUNGSEIGENSCHAFTEN EINER FAHRBAHNOBERFLÄCHE
PROCÉDÉ ET SYSTÈME DE DÉTERMINATION D'UNE CARACTÉRISTIQUE DE FRICTION D'UNE SURFACE DE ROULEMENT
2022-04-27
Patent
Electronic Resource
English
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 / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / G01S RADIO DIRECTION-FINDING , Funkpeilung |
European Patent Office | 2022
|European Patent Office | 2021
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