Research On Experimental Platform Of Adaptive LED Front-light System

With the continuous development of our country’s economy, and the continuous improvement of our living standards, more and more people choose the car as a mean of transport. However, the traditional automotive lighting system gradually can’t meet the needs of modern automotive lighting, the traffic accidents happened frequently. The area of illumination in the traditional automotive lighting system is static distribution, the car’s lighting is a difficult problem to overcome when the vehicle is in corner, or the vehicle body is pitching. Therefore, it’s necessary to study the adaptive front lighting system.In order to solve the problem that the vehicle’s front-light can adjust the illumination angle automatically when the car is in corner or pitching, a experimental platform is created to simulate and test operating laws changed according to the adaptive front-light system, and therefore to provide a theoretical foundation for the further research and decreasing a large cost for the company in this regard.The experimental platform of adaptive LED front light system studied in this article, we choose the LED lamps as the car lighting. Firstly, the design of the mechanical structure of the experimental platform is described in detail. According to the range of the front headlight in the horizontal direction and the vertical direction, we determined the type, structure and composition of the mechanical structure of the platform, and built the model of the experimental platform in the SolidWorks software environment, and processed it with aluminum alloy material. Secondly, in order to solve the problem of dynamic coupling of internal and external frames, we deduced the dynamic equation of the internal and external frames of the experimental platform. Combining the mathematical model of DC servo motor driving the internal and external frames, we built the mathematical model of the internal and external frames. we decoupled the nonlinear control system of the experimental platform using the PID decoupling controller, divided it into two independent SISO systems, and the results was simulated in the Matlab software environment. Finally, the hardware of the experimental platform is introduced and the hardware selection is completed. The experimental platform of adaptive LED front system is built and run, and the experiment of time response performance, tracking performance and bandwidth performance were completed.