公开(公告)号：US11511753B2

公开(公告)日：2022-11-29

申请号：US17080016

申请日：2020-10-26

Applicant: APTIV TECHNOLOGIES LIMITED

Inventor： Jan Schiffmann ,  Henrik Clasen ,  David Aaron Schwartz ,  Amith Somanath

IPC: B60W40/068 ,  B60W30/02

Abstract: An illustrative example method is for estimating a friction characteristic of a surface beneath a vehicle that has a plurality of wheels 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 that provides an output corresponding to a range rate, such as a RADAR or LIDAR detector.