Patent ID: 8370013
Filing Date: 2013-02-05
Classification: B60K,B60T,B60W

Abstract:
1. A system for determining an estimation of an instantaneous speed of advance of a vehicle relative to a ground surface based on measurements obtained from a movement sensor for a wheel of the vehicle, the system comprising: an indicator of a circumferential wheel speed of a wheel of a vehicle based on measurements from a movement sensor for the wheel, the indicator outputting an indication of the circumferential wheel speed of the wheel; a device for determining an instantaneous road grip coefficient of the wheel based on data available on board the vehicle; a test stage for validating the indication of the circumferential wheel speed of the wheel from the indicator, the test stage utilizing a value of the instantaneous road grip coefficient to perform the validating; and a speed estimation module configured to combine circumferential wheel speed indications validated by the test stage to deduce therefrom an estimation of a speed of advance of the vehicle relative to a ground surface, wherein the test stage performs the validating according to a relationship that enables determination of whether a corresponding difference, or slip, between the circumferential wheel speed of the wheel and the estimation of the speed of advance of the vehicle relative to the ground surface at a given instant is sufficiently small to permit the circumferential wheel speed of the wheel to be retained by the speed estimation module as a datum for determining an estimation of an instantaneous speed of advance of the vehicle relative to the ground surface.