The simulative analysis of headlamp steering based on linear quadric control

The left and right headlamp steering angle, brake distance have been comprehensively considered, the AFS steering model has been established based on two-degree-of-freedom vehicle linear dynamics model. Linear quadric control is used to optimize and simulate. The simulate results show that the optimized headlamp steering angle reduces 2°when the vehicle speed is at 25km/h, the fluctuation of the optimized headlamp steering angle reduces 0.4° when the vehicle speed is at 45km/h, on the required front wheel angle, as the vehicle speed grower the headlamp steering angle is reducing, at last comes to stability, usually the max value of the headlamp steering angle is between 15°–20°, as the front wheel angle increases, the headlamp steering angle is becoming bigger, and to be stable as time goes. The comprehensive analysis shows that the safety of vehicle driving in night is improved by using headlamp linear quadric control.