摘要
本文简述了车轮定位参数的定义;根据FNCA型非接触式车轮定位仪对车轮定位参数的测量过程,推导出其测量车轮前束角&外倾角的计算公式———测量原理;分析了这类设备的标定方法,并以三坐标机测量为例介绍了设备主标定架的标定过程及其量值溯源方法;根据测量数据计算出标定架前、后、左、右各调整板的前束角&外倾角。结果表明,当标定架各调整板上4个凸面块的平行度均小于0.05mm时,就能满足其作为FNCA型车轮定位仪测量基准的要求。
This paper gives a brief statement on the definition of wheel alignment parameters , deduces the calculation formulas of Toe and Camber （Measurement Principles） from the measuring processes using FNCA Non-Contact Wheel Aligner, analyses the method about the facility of this kind, introduces the calibration processes and the traceability system for the equipment＇ s master gage by means of the Coordinate Measuring Machine （CMM）, calculates the master gage＇s toe angles ＆ camber angles with the measurement data. Results showed： if the parallelism of the four convex pads attached on every adjust plate are all less than 0.05mm, the master gage can then meet the needs of that it is as the measurement standard of FNCA Non-Contact Wheel Aligner.
出处
《中国测试技术》
2005年第5期37-39,120,共4页
CHINA MEASUREMENT & TESTING TECHNOLOGY
关键词
车轮定位参数
非接触式车轮定位仪
测量原理
标定方法
Wheel alignment parameters
Non-contact wheel aligner
Measurement principle
Calibration method
