汽车前照灯光轴检测偏差补偿策略

Compensation Strategy on Optical Axis Detection Deviation of Automotive Headlamp

分析了汽车前照灯光轴检测的误差来源,提出了汽车轴偏角补偿量、汽车停放角补偿量和汽车停放距离补偿量的测量方法,论述了汽车前照灯光轴检测水平方向误差及垂直方向误差的补偿策略,设计了汽车前照灯检测误差补偿系统。试验结果表明,对检测误差进行补偿后,水平方位角的检测结果方差由1.836×10-1降为0.183×10-1,垂直方位角的检测结果方差由1.53×10-2降为0.39×10-2,验证了汽车前照灯检测误差补偿策略的有效性和准确性。

Sources of headlamp optical axis detection error are analyzed and measurement methods for the compensation values of vehicle wheel setback angle, parking angle and vehicle parking distance are presented. Compensation strategy for the detection errors of vehicle headlamp optical axis in horizontal and vertical direction is discussed, and error compensation system for vehicle headlamp test is designed. The test results show that the variance of the horizontal azimuth declines to 0.183＆#215;10 -1from 1.836＆#215;10 -1, moreover, the variance of vertical azimuth decreases to 0.39＆#215;10 -2 from1.53＆#215;10 -2after compensation is made to inspection errors. The feasibility and accuracy of compensation strategy on optical axis inspection deviation of vehicle headlamp are proved.