Patent ID: 6957873
Filing Date: 2005-10-25
Classification: B60T

Abstract:
1. A method for regulating the driving stability of a four-wheeled steered vehicle with an individual wheel brake assigned to each wheel, comprising the steps of: determining pressures for the individual brakes of the vehicle in dependence on several input quantities so that the driving stability is enhanced by brake interventions at individual wheels, determining during a stable driving performance whether in view of a highly dynamic steering maneuver there is a tendency to a subsequent unstable driving performance, and wherein in this case brake pre-intervention will occur already when the vehicle exhibits a stable driving performance, evaluating the variation between leaving a tolerance band indicating a stationary, stable driving performance and the entry of the steering wheel angle velocity into the tolerance band, detecting the highly dynamic steering maneuver is detected when the following conditions are satisfied: a.) |SWAP MAX |/(T 2 −T 1 )>threshold value 1 , b.) |SWAP MAX |/(T 3 −T 2 )>threshold value 2 , c.) |SWAP MAX |>threshold value 3 ; wherein SWAP=steering wheel angle velocity, SWAP MAX =maximum of the steering wheel angle velocity, T 1 =point of time of the steering wheel angle velocity leaving the tolerance band, T 2 =point of time of the maximum of the steering wheel angle velocity, T 3 =point of time of entry of the steering wheel angle velocity into the tolerance band.