ACTIVE FRONT STEER CONTROL FOR VEHICLE STABILITY ENHANCEMENT

摘要

An AFS control system (50) that combines and weights yaw rate feedback and side-slip rate feedback to provide increased vehicle stability enhancement control. The AFS system (50) includes a yaw rate sub-system (60) that generates a desired yaw rate signal. The AFS system (50) also includes a side-slip rate sub¬ system (62) that generates a desired side-slip rate feedback signal. The AFS system (50) further includes a side-slip rate feedback sub-system (64) that generates a side-slip rate feedback signal. The AFS system (50) also includes a yaw rate feedback sub¬ system (66) that generates a yaw rate feedback signal. The yaw rate feedback signal and the side-slip rate feedback signal are integrated in a control integration sub¬ system (56) that generates a stability enhancement control signal. The control integration sub-system (56) determines whether the vehicle is in an oversteer or understeer condition, and weights the desired yaw rate feedback signal accordingly based on the vehicle condition.