Vehicle Stabilization by the Vehicle Dynamics Control System ESP

Abstract The problem of the driver losing control of his car will be explained and the goal for the vehicle dynamics control system ESP (Electronic Stability Erogram, alternatively called VDC) will be formulated. It will be shown, that the vehicle slip angle is a crucial indicator for the stability of the automobile. Since the complete vehicle state is not readily available, estimation algorithms are used to supply the control algorithms with sufficient information. The slip angle is controlled by a yaw moment generated by individual wheel slip control. It will be shown, that ESP can significantly improve vehicle handling in extreme maneuvers.