The invention relates to a device and to a method for estimating a coefficient of friction of a road, which is present in frictional contact between an underlying surface (8) and tyre (90) of a vehicle, wherein the device (10) comprises a connection (11) for an acceleration sensor (12) for inputting a vehicle acceleration measured value (aT, aL), a load-determining apparatus (13) for determining at least one vertical tyre load (Fzi), a tyre slip-determining apparatus (14) for determining at least one tyre slip (sLi) of the tyres (90) and a coefficient of friction-estimating apparatus (15) for determining and outputting an estimated value for the coefficient of friction (f') of the road, wherein the device (10) also has an acceleration-estimating apparatus (17) which is designed to determine an estimated value for the vehicle acceleration (aL') using a tyre model (22) on the basis of at least the tyre slip (sLi), the vertical tyre load (Fzi) and an estimated value, determined in a preceding cycle, for the coefficient of friction (f') of the road, and the coefficient of friction-estimating apparatus (15) is designed to adapt the output estimated value for the coefficient of friction (f') of the road, in such way that a difference between the estimated value (aL') and the measured value (aL) of the vehicle acceleration is adjusted to a predefineable range.
VORRICHTUNG UND VERFAHREN ZUM SCHÄTZEN EINES STRASSENREIBUNGSKOEFFIZIENTEN
DEVICE AND METHOD FOR ESTIMATING A COEFFICIENT OF FRICTION OF A ROAD
DISPOSITIF ET PROCÉDÉ D'ESTIMATION D'UN COEFFICIENT DE FROTTEMENT D'UNE ROUTE
2024-07-10
Patent
Electronic Resource
German
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / 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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