LED式三维表面测量传感器在汽车底盘几何参数测量中的应用研究  

Research on Application of LED x-3Dsurface Measuring Technology in Vehicle Chassis Geometric Parameter Measurement

作　　者：田常青 Tian Changqing(Schenck Shanghai Machinery Corp.Ltd.,Shanghai 200444)

机构地区：[1]上海申克机械有限责任公司,上海200444

出　　处：《汽车工程师》2024年第12期21-27,共7页Automotive Engineer

摘　　要：为提高车辆底盘几何参数检测系统的精度、稳定性及灵活性,以立体摄影测量技术为基础,使用结构化发光二极管(LED)光源,基于车轮侧表面和轮罩边缘形成空间测量区,设计了由LED式三维表面测量传感器组成的汽车底盘几何参数测量系统,动态获得车轮的点云数据,结合x-line软件建立轮毂三维模型,分析并计算底盘前束角、外倾角的线性度和重复性,结果表明,该测量系统的线性度误差为1.528',前束角、外倾角的重复性测量误差分别为±0.03'、±0.05',具有稳定性和可靠性。In order to improve the accuracy,stability and flexibility of the vehicle chassis geometric parameter detection system,a vehicle chassis geometric parameter measurement system consisting of LED type 3D surface measurement sensors is designed based on stereo photogrammetry,using a structured LED light source to form a“spatial measurement area”based on the entire wheel side surface and wheel cover edge.By using 3D photography technology to obtain point cloud data under dynamic measurement,and combining with x-line software,a 3D wheel hub model is established to analyze and calculate the front toe camber angle of the chassis,the linearity and repeatability of the measurement system.The results show that linearity error of this measurement system is 1.528',repeatability error of front toe angle and camber angle are±0.03'and±0.05'respectively,verifying stability and reliability of the measurement system.

关 键 词：三维表面测量传感器 立体摄影测量 结构化 LED光源 

分 类 号：U467.1[机械工程—车辆工程]