AFS自适应汽车前大灯模糊控制系统设计

Fuzzy control design of the adaptive front-light system

为解决汽车进入弯道时,因传统前照灯的照明角度随车行前进方向而存在弯道照明暗区的问题,基于阿克曼转向原理,在安全制动距离的基础上,计算车速、车轮偏角和车灯转角的几何关系。并在MATLAB平台创建AFS模型来进行多种路段的仿真分析,在仿真模型的基础上设计模糊控制器对其控制优化。仿真结果表明,加入模糊控制策略后的AFS能够增加系统的工作稳定性,减小过度偏角,提高前大灯的使用寿命和工作精度,超调量达到0.005°,调节时间为0.05s,得到了优良的控制效果。

To solve the problem with the dark space while driving the car into the corner as the traditional headlamps lighting angle follow the driving direction.The research is based on the safe braking distance to calculate the relationship between speed,wheel angle and light angle by the principle of Ackerman steering,and create the AFS model on the MATLAB to carry out a va-riety of road simulation analysis.The fuzzy controller to optimize the AFS model is designed and the result show that after adding the Fuzzy control strategy,it can increase the working stability,reduce the excessive angle,improve the service life and working accuracy,the over-shoot volume is 0.005°,adjust time is 0.05 s,obtaining a good control effect.