Vehicle Yaw Stability Control Research Articles

Generalized predictive control of yaw dynamics of a hybrid brake-by-wire equipped vehicle

Yaw stability of an automotive vehicle in a steering maneuver is critical to the overall safety of the vehicle. In this paper we present a theoretical development and experimental results of a vehicle yaw stability control system based on generalized predictive control (GPC) method. The controller tries to predict the future yaw rate of the vehicle and then takes control action at present time based on future yaw rate error. The proposed controller utilizes the insight into the yaw rate error growth when the automobile is in an understeer or oversteer condition on a low friction coefficient surface in a handling maneuver. A hybrid brake-by-wire equipped vehicle was used to experimentally verify the proposed control algorithm. Experimental results show that the predictive feature of the proposed controller provides an effective way to control the yaw stability of a vehicle.

Coordination Strategies for Combined Steering and Individual Wheel Braking Actuated Vehicle Yaw Stability Control

The road vehicle yaw stability controller is an important element of the vehicle active safety system. Yaw stability control systems operate within the panic reaction time of the driver and generate corrective yaw moments through either steering or individual wheel braking. While yaw stability controllers based on steering or individual wheel braking have been formulated quite frequently, controllers that make coordinated use of both methods of actuation are not so common. This paper addresses the combined and coordinated use of both methods of actuation in a model regulator based yaw stability controller for improved performance