基于前后轮侧偏角的汽车自动转向头灯转角计算及联合仿真研究

由于汽车前照灯转角和汽车的运动状态有关,而汽车的运动状态又受轮胎侧偏特性的影响,因此本文利用前后轮侧偏角的绝对值之差来修正前照灯理论转角;然后,我们在simulink中建立步进电机仿真模型,在ADAMS中建立前照灯减速机构虚拟样机模型,再通过两者组合成前照灯转角开环控制系统,并把前照灯理论转角输给该开环控制系统,得出了前照灯的实际输出转角对需求理论转角的跟随曲线。

The Calculation and Co-simulation of Vehicle Adaptive Front-lighting System Based on the Front-rear Wheel Slip Angle

The angle of Adaptive Front-lighting System is relevant to the motion state of the vehicle.However,the motion state of the vehicle is affected by the tire cornering property.Therefore,we amend the headlamp theory angle by the difference between values of the side slip angles of the front and rear wheels.And then,we build a simulation model of stepper motor in Simulink software and a virtual prototype model of AFS in ADAMS software.After that,we combine the two models into a headlamp angle open-loop control system.We import the headlamp theory angle into the system and get the following result between the actual output angle and the theory angle of the headlamp.