Patent ID: 6108599
Filing Date: 2000-08-22
Classification: B62D

Abstract:
A vehicle steering control system, comprising:manual steering torque input means for manually applying a manual steering torque to steerable wheels of a vehicle;powered steering actuator means for applying an actuating steering torque to said steerable wheels of said vehicle;a yaw rate sensor for detecting a yaw rate of said vehicle; andcontrol means for controlling said actuating steering torque according to said detected yaw rate so thatsaid actuating steering torque is dependent on said detected yaw rate and a change rate of said detected yaw rate in such a manner that said detected yaw rate always contributes to said actuating steering torque so as to reduce said detected yaw rate, and said change rate of said detected yaw rate contributes to said actuating steering torque so as to reduce said detected yaw rate in a high speed range but so as to increase said detected yaw rate in a low speed range.