汽车自适应前照灯照明系统的仿真及控制分析.docx

摘 要
随着社会的进步、科技的发展,人们对行车安全有了更高、更迫切的要求,汽车安全的智能化逐渐受到世界各国汽车制造商的广泛关注,并为此投入大量精力。为了提高夜间行车的安全性,针对传统汽车前照灯存在的照明不足,以及会车时给迎面行车驾驶员带来眩目等诸多问题,围绕汽车自适应前照灯研究逐步被展开,并受到了各界的高度重视。
汽车自适应前照灯照明系统能够根据车辆行驶状况,以及所处的环境提供合理的照明光束,为驾驶员提供最佳的视野范围,减少交通事故的发生。论文主要研究了汽车夜间行驶时的弯道照明、车身的俯仰照明,上坡时车灯的照明光束调整规律,以及汽车前照灯智能化控制方面的内容。
论文首先研究了汽车自适应照明控制系统国内外的发展现状以及发展趋势,根据前照灯照明系统的实现功能要求,以及目前的相关法律法规,提出了系统的总体设计方案, 对传感器进行了选择;然后依据车辆参数建立自适应前照灯的水平偏转以及俯仰调整的数学模型,并运用 labview 软件对其进行仿真分析,得到了车辆行驶参数与车灯偏转角的定量关系。
论文采用模糊控制理论详细研究了汽车自适应前照灯控制系统的控制策略。对汽车前照灯的水平偏转以及俯仰高度调整采用了模糊控制策略,并与传统的计算机控制策略进行了对比分析,结果表明对汽车前照灯采用模糊控制策略能实现更有效的实时的控制需求,控制的基理更符合人们对控制过程作用的直观描述和思维逻辑。这一结论为以后的进一步深入研究汽车自适应前照灯控制策略奠定了基础。
关键词:汽车前照灯;智能照明;仿真分析;模糊控制
Absract
With the social progress and technological development, traffic safety has been higher and more urgent demands, Therefore, the manufacturers of countries all over the world have con- centrated so much efforts on the intelligence research on automobile over the years. In order to improve the safety driving at night, Based on the problems of traditional front-light system which is can't provide good lighting in time and bring dazzling to driver when the car passing . The research of automobile adaptive front-light system was the high valued.
Automobile adaptive front-light system can provides the reasonable lighting beams accord- ing to the vehicle status and its environment, it can provide a good the best view for the driver and prevent traffic accidents. This paper considers the adjustment of front-light when the veh- icle driving on the corner, meet slope and the car body pitch at night,As well as intelligent control aspects.
This paper first study the current situation and development at home and abroad and the development trend of AFS, according to the correlative legal basis and the function require- ment to puts forward the design of the whole system solutions and choice more important sensor which are used. Then the paper set up the the mathematical model of horizontal deflection and the height adjustment