Patent ID: 7640089

Claim:
A control system for providing a rear-wheel steering assist signal for rear wheels on a vehicle, said system comprising: a hand-wheel sensor for providing a hand-wheel angle signal of the position of a vehicle hand-wheel; a vehicle speed sensor for providing a vehicle speed signal of the speed of the vehicle; a vehicle yaw rate sensor for providing a measured vehicle yaw rate signal of the yaw rate of the vehicle; a vehicle yaw rate command interpreter responsive to the hand-wheel angle signal and the vehicle speed signal, said vehicle yaw rate command interpreter generating a vehicle yaw rate command signal; a differencer responsive to the vehicle yaw rate command signal and the measured vehicle yaw rate signal, said differencer generating a vehicle yaw rate error signal; and a vehicle yaw rate feedback controller responsive to the vehicle yaw rate error signal, said vehicle yaw rate feedback controller generating a vehicle yaw rate feedback signal for the rear-wheel steering assist signal.