余红燕

摘 要：針对汽车照明系统车灯在行驶过程中转弯、上下坡等情况下，出现照明盲区和远近光灯不能有效切换等问题，同时对比传统的PID控制对照明步进电机，存在采集时间较短，若步进电机参数数值变化较大，那么控制结果就可能出现偏差，使得控制精度降低，为此提出一种基于增量式PID 控制算法，来优化步进电机的控制。仿真结果证明，基于增量式 PID 控制算法的汽车照明系统的步进电机，响应速度快，控制精度高，鲁棒性较强。

关键词：汽车照明系统 步进电机 增量式 PID控制

Research on Optimal Control of Stepping Motor in Automotive Adaptive Lighting System

Yu Hongyan

Abstract：Aiming at the problems of the lighting blind zone and the inability to switch between the far and near beams when the car lights of the automotive lighting system are turning or going up and down during driving， and at the same time， compared with the traditional PID control on the lighting stepper motor， there is a shorter acquisition time if the parameter value of the stepper motor changes greatly， and the control result may be deviated， which reduces the control accuracy. For this reason， an incremental PID control algorithm is proposed to optimize the control of the stepper motor. The simulation results prove that the stepper motor of the automotive lighting system based on the incremental PID control algorithm has fast response speed， high control accuracy and strong robustness.

Key words：automotive lighting system， stepper motor， incremental， PID control