Research on steering control strategy of steer-by-wire vehicle

A mathematical model of the steer-by-wire system was established,in which dynamic correction control algorithm based on feedforward control of the ideal variable ratio and the feedback control of yaw rate was adopted to determine the front wheel angle so that active steering of the front wheels was realized and the burden of the driver was reduced to some extent.A simulation study on two kinds of road with different friction coefficient shows that the control strategy can decrease the response time of vehicle and reduce steady state value and overshoot of side slip angle,which makes the steering more smoothly,increases anti-interference and improves the handling and stability.