Motor vehicle safety testing equipment technical requirements of verification - part 6 : technical requirements of verification for symmetrical beam headlamp tester 机动车安全检测设备检定技术条件第6部分:对称光前照灯检测仪检定技术条件
An adaptive control strategy for electronic ballast of automotive xenon headlamp is proposed with corresponding circuits of ballast comparatively analyzed 摘要针对汽车氙气前照灯的点灯情况以及老化程度，提出一种自适应控制策略，并对电子镇流器的有关电路进行分析和比较。
The design method of the automobile headlamp is very sophisticated , and the design measures and thinking discussed before is just used to make useful exploration and make solid basement for the further research 汽车前照灯的设计方法非常复杂，本论文介绍的设计方法和思想只是进行了有益的探索，为进一步研究奠定的基础。
The development trend of the headlamp is distributing light with the reflector which is difficult to design , so its design must take advantage of the cad technique and is guided by the computational simulation software 汽车前照灯发展趋势是通过反射镜配光，然而这种前照灯的设计的难度比传统的前照灯大，因此它的设计必须采用cad技术，并使用仿真计算软件作为设计的指导。
The equipment is also widely used in motor vehicles and test center ( field station , line ) , the manufacturing plant , maintenance industries , transportation companies and fleet of motor vehicle headlamps on the luminous intensity and volume of optical axis deviation was detected , adjustments 该仪器广泛使用于机动车检测中心（场、站、线） 、制造厂、维修行业、运输公司和车队，对各种机动车前照灯的发光强度和光轴偏斜量进行检测、调整。
After the comparing the simulation results with the theoretic results under the three followed condition : a point light source on the parabola reflector focus , a point light on the ellipsoid reflector focus and a point light source before the parabola reflector focus , a conclusion is gotten that the two results are generally accordant , the accuracy of the simulation software reach the engineering requirements and the computational simulation software of photometric characteristics of headlamp of motor vehicles can guide the design of the headlamp reflectors 比较了点光源位于抛物面反射器和椭球面反射器焦点的情况和点光源偏离抛物面焦点的情况下照度的理论计算结果和采用本文的照度仿真计算结果，其仿真计算结果和理论计算结果基本相符，能满足工程上的要求，说明仿真计算软件对前照灯的反射镜的设计具有很好的指导意义。
Firstly , the calculation methods of lighting optics , such as ray tracing method , monte carlo method and flux transmission method , are discussed , further more the characteristic and the application field are anatomized and compared , consequently the flux transmission method is selected as the main method of computational simulation software of photometric characteristic of headlamps for vehicle 本文首先对常用的光线追踪算法、蒙特卡罗方法和光通转移法等照明光学的计算方法进行了讨论，分析比较了各种计算方法的特点和适用范围，选择了光通转移法作为汽车前照灯反射镜配光性能的仿真计算的主要算法。
The lighting and light matching capability of the automobile headlamp is very important to the safety of night - driving . the measurement of automobile headlamp must use the headlamp measure instrument , which is needed to use a calibration instrument to calibrate . however , whether the calibration instrument is standard must be checked up by a measure system 汽车前照灯的检测需要用“汽车前照灯检测仪” ，而“汽车前照灯检测仪”的定期校准工作需要用“前照灯检测仪校准器”来进行； “前照灯检测仪校准器”是否合乎标准需要靠“前照灯检测仪校准器检定系统”来检测。
