一种城市轨道车辆轮对参数动态检测新方法  

A new dynamic detection method for the urban rail vehicle wheel parameters

作　　者：方宇[1] 王振龙[2] 田中玉[1] 李立明[1] 陈龙[1] 

机构地区：[1]上海工程技术大学城市轨道交通学院,上海201620 [2]哈尔滨工业大学机械制造及自动化系,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2012年第9期132-137,共6页Journal of Harbin Institute of Technology

基　　金：上海市教育委员会重点学科建设项目(J51401)

摘　　要：为提高城市轨道车辆轮对关键参数的动态检测精度,提出一种在轮轨接触处开辟"检测窗"的轮对参数非接触动态检测新方法.建立轮对踏面图像采集几何映射模型及检测坐标系,利用坐标变换确立了轮对关键参数的计算方法.根据城市轨道车辆轮对现场实际应用规定,对光切面检测窗口关键参数进行选定.建立轮对参数动态检测实验平台,对轮对关键参数进行了检测试验.结果表明,相对于接触式检测,利用本文提出的方法所获取的轮对关键参数误差均低于1%,说明该方法具备良好的检测精度.在轮轨接触处开辟检测窗进行轮对参数动态检测,可使光源位置和摄像位置基本保持不变,从而可以有效保证轮对参数检测精度.To improve the detection precision of the urban rail vehicle wheel key parameters, a new non-contact dynamic detection method based on opening up a ＂detect window＂ at the wheel/rail contact point is put forward. The image geometric mapping model of the wheel tread and the coordinate system for detection are es- tablished, and the calculation method of wheel key parameters is established on the basis of coordinate transla- tion methods. According to the actual application regulations of urban rail vehicle wheels, the key parameters of optical section detecting window are selected. The wheel key parameters checking experiments are carried out by use of the developed test bed. The results show that the wheel key parameter error values obtained by the method are all less than 1%. By opening up the ＂detect window＂ at the wheel/rail contact point, the light source position and the camera position can remain unchanged, so the parameters detecting precision can be guaranteed effectively.

关 键 词：城市轨道车辆 轮对 踏面 动态检测 检测窗 

分 类 号：U463.34[机械工程—车辆工程]