Patent ID: 6041277
Filing Date: 2000-03-21
Classification: B60T

Abstract:
A method of improving the control behavior of an anti-lock system of a vehicle with a plurality of wheels, each wheel being equipped with a wheel brake with an individually contolable braking pressure, wherein the rotational behavior of the individual vehicle wheels is measured and a vehicle reference speed is produced by logically combining the measured quantities, the vehicle reference speed being used as a reference quantity to determine the wheel slip and other control quantities and as a reference quantity for braking pressure control or braking pressure modulation, wherein, upon the commencement of an anti-lock control operation including a brake pressure reduction subsequent to an uncontrolled braking operation, and upon the occurrence of an acceleration of at least one controlled wheel which is in excess of a predetermined limit value, a quotient Q is produced of a maximum brake slip .lambda..sub.max of the wheel during the anti-lock brake operation and the duration .DELTA.t of pressure reduction until the wheel reaccelerates, according to the relation ##EQU2## and the exceeding of a predetermined limit value of this quotient is assessed as an indicator of single disturbances, and wherein, upon detection of such a single disturbance, the braking pressure on the wheel where the single disturbance occurred is increased until the wheel deceleration falls short of a predetermined limit value.