Patent ID: 6202019
Filing Date: 2001-03-13
Classification: B60T

Abstract:
A method of improving the control behavior of an anti-lock control system of a vehicle with a plurality of wheels, comprising the steps of:measuring individual wheel speeds;deriving a vehicle reference speed that is used as a reference quantity;determining the acceleration of the individual wheels from the rotating behavior of the vehicle wheels;determining individual wheel slip by comparing the wheel speeds with the vehicle reference speed;obtaining criteria for identifying a cornering situation and the curve direction, by filtering the wheel slip values for identifying cornering by way of a low-pass filter andcomparing the filtered values, wherein a filter of first order is used as a low-pass filter, with a time constant which is varied as a function of the acceleration of the respective wheel, wherein the time constant T.sub.i of the low-pass filter, starting from a minimum value T.sub.min, is increased according to the relationT.sub.i =T.sub.min +(a.sub.grenz =a.sub.i)/k.sub.1 with i =1 . . . 4when the acceleration a.sub.i of the respective wheel i drops below a predetermined limit value a.sub.grenz, wherein the limit value a.sub.grenz ranges between -4g and -1g and the minimum value of the time constant T.sub.min ranges between 50 msec and 100 msec.