基于误差分解定权的工业测量空间线面拟合算法  

Industrial Measurement Fitting Algorithm for Space Line/Plane Based on Error Decomposition Weighting

作　　者：潘国荣[1] 郭巍[1] 周跃寅[1] 

机构地区：[1]同济大学测绘与地理信息学院

出　　处：《计量学报》2015年第5期469-472,共4页Acta Metrologica Sinica

基　　金：教育部高等学校博士学科点专项科研基金(20120072110049);测绘地理信息公益性行业科研专项经费(HY14122136)

摘　　要：针对工业工件拟合中测量数据由于测量仪器特性导致的不同方向误差分量差异问题进行了研究，提出了基于误差分解定权的工业测量拟合算法。该算法考虑了工件姿态以及测量仪器和测点的空间关系，分析了纵向误差和横向误差分量对空间直线和空间平面拟合的影响，然后通过影响量对测量数据进行定权，从而削弱仪器测量误差对拟合结果的影响，提高工件拟合精度。实验结果表明，该算法相比等权拟合精度可提高约16％。In industrial measurement fitting applications, because of the measuring characteristics of instruments, error components of measurement data in different directions are difference, aiming at this problem a fitting algorithm for space line and plane base on error decomposition weighting has been proposed. Spatial attitude of workpiece and relationship between instrument and measuring points are considered. Then, influence quantity of vertical error and horizontal error on space line fitting and plane fitting are analyzed to weight measuring points. Experiment results show that compare with equal- weighted fitting algorithm, this algorithm improved the fitting precision about 16%.

关 键 词：计量学 工件拟合 误差分解 加权拟合 工业测量 

分 类 号：TB921[一般工业技术—计量学]