Verfahren und System zur Berechnung einer Fahrbahnreibungsschätzung

Details

Veröffentlichungs-Nr.

EP3398825

Aktenzeichen

EP17169229

Anmeldetag

3. Mai 2017

Veröffentlichung

11. März 2020

Erteilung

11. März 2020

Rechtsraum

EP

IPC

B60T8/172

Abstract

The present invention relates to a method for computing a friction estimate (µ) between a road surface and a tire (101 a-d) of a vehicle. The method comprises applying a controllable torque to at least one of wheel of the vehicle and determining a vehicle velocity when the controllable torque is applied. Estimate a present tire force acting on said first tire when the torque is applied. Based on a vehicle velocity, estimate the present slip of said tire. Determining a present gradient of said tire force with respect to said slip based on the present tire force and said value indicative of the present slip. When the present gradient exceeds a predetermined first gradient threshold value and is below predetermined second gradient threshold value, compute the friction estimate.

Anmelder

Firma

Volvo Car Corporation

Land

🇸🇪 Schweden

Fachgebiete