Evaluation of Spatial Straightness Error using LaserTRACER
In order to improve the evaluation precision of spatial straightness error,new measurement setup using 4 LaserTRACERs were built at National Institute of Metrology (NIM).The LaserTRACER is a length measurement device with sub-micron accuracy.In principle,the LaserTRACER is a traceable interferometer.Experiment was implemented on a granite rail with air-suspending slider to test the spatial straightness of the rail.In the experiment,the retroreflector was mounted on slider and moves alone the rail after the spatial frame of axes was built.Using 4 LaserTRACERs,the spatial coordinates can be calculated by Multilateration algorithm.The optimal arrangement of LaserTRACERs is studied by simulation and experiment.The mathematical model based on GBT11336-2004 was built,and Least squares method is used in the spatial line fitting.The measurement principle and results were verified by comparison with SpatialAnalyzer and Metrolog XG.
Spatial straightness error Least squares method Multilateration LaserTRACER
Mingzhao He Xiaoyou Ye Jianshuang Li Xiaochuan Gan
National Institute of Metrology, No.18, Bei San Huan Dong Lu, Beijing 100013,China
国际会议
2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)
成都
英文
1-5
2012-08-08（万方平台首次上网日期，不代表论文的发表时间）