基于S函数的汽车前照灯智能转向系统仿真

摘要

为了解决夜晚汽车在弯道上行驶的"盲区"问题,提高驾驶员在夜间行驶的安全性,提出了汽车前照大灯智能转向系统,能根据汽车的行驶参数不断地对前照灯进行动态调节,确保对前方道路提供最佳的照明.根据汽车在转向过程中的行驶动力学方程,利用MATLAB中的S函数建立其仿真模型,并通过研究其工作特性给出了汽车前照大灯水平调整角度的计算方法.在无刷直流电机位置和转速双闭环仿真模型的基础上,建立了整个控制系统的仿真模型,仿真结果表明:整个智能控制系统具有快速性和准确性,对实际设计提供了参考依据.%In order to solve the problem of “blind area" driving in the corners of road, improve the safety of drivlng at night, the adaptive steering system of automotive headlight is proposed. This system can adjust dynamically the headlight according to the driving parameters in order to give the best lighting condition. Based on the steering process of driving dynamics equation, this paper establishes the simulation model using the S - Function of MATLAB/Simulink. The horizontal adjusting angle of headlight is calculated by studying the operating characteristics.The simulation of whole control system is established hased on the model of brushless DC motor. The result shows that the intelligent control system is of rapidity and accuracy and it has some guiding significance for practical applications in the future.