Method and device for ascertaining the speed of a motor vehicle

摘要

A method for ascertaining the speed of a motor vehicle with the aid of wheel rotational speed sensors. To improve the calculation of the vehicle speeds on the basis of the wheel speeds, a first group of wheels of the motor vehicle is decelerated and a second group of wheels of the motor vehicle is simultaneously accelerated.

主权项

1. A method for ascertaining a speed of a motor vehicle with the aid of wheel rotational speed sensors, comprising:
determining a reference speed of freely rotating wheels; decelerating a first group of wheels of the motor vehicle to the reference speed of the freely rotating wheels; and simultaneously accelerating a second group of wheels of the motor vehicle; accelerating the first group of wheels and simultaneously decelerating the second group of wheels in an additional method step; repeatedly alternating between method steps of: decelerating the first group of wheels and accelerating the second group of wheels, and accelerating the first group of wheels and decelerating the second group of wheels; and ascertaining the speed of the motor vehicle based on the repeatedly alternating step.