Simulation of Predictive Control for Vehicle Yaw Stability on Curve

In order to improve vehicle yaw stability on curve and in view of the nonlinear problems in vehicle yaw stability control,a control method for improving vehicle yaw stability based on predictive control was proposed.A simplified model of vehicle steering motion was set up.By using predictive control strategy,the vehicle yaw motion was controlled through generating additional torque from a differential braking.Simultaneously,yaw rate and side slip angle were used as feedback input variables to suppress system error.A vehicle predictive control system was designed,and a simulation for the control system under the conditions of step input and sinusoidal input of steering wheel was performed.The simulation result shows that compared with the uncontrolled vehicle,the steady values and the overshoots of yaw rate and side slip angle were reduced,the presented method can effectively control the yaw rate and side slip angle synchronously,and the vehicle yaw stability on curve was improved.Especially an evident response can be achieved on a low adhesive road,and the method could lighten the burden of driver.