作者：徐磊, 陈晓怀, 程银宝, 姜瑞, 王汉斌, 程真英
作者单位：合肥工业大学仪器科学与光电工程学院, 安徽 合肥 230009
关键词：计量学;不确定度评定;孔径测量;坐标测量机
摘要：
以坐标测量机测量孔径为例,阐述测量过程中影响测量结果的不确定度来源,根据测量模型建立孔径测量的GUM法不确定度评定模型;利用对坐标测量机的测量系统量值特性指标分析的方法,给出基于量值特性分析法的各标准不确定度分量的评定模型。通过对汽车空调压缩机后缸体的孔径测量,比较两种方法评定的扩展不确定度。实例分析可以看出:对于坐标测量机复杂的非线性测量模型,GUM法在计算灵敏系数时,运算量较大且获得的是近似结果,因此其可操作性不强;量值特性分析法通过对测量系统整体的分析,基于大量的实验数据对测量结果进行测量不确定度评定,其流程和操作性更为便捷、有效。
Uncertainty evaluation model for aperture measurement of coordinate measuring machines
XU Lei, CHEN Xiaohuai, CHENG Yinbao, JIANG Rui, WANG Hanbin, CHENG Zhenying
School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009, China
Abstract: The factors which may influence the measurement uncertainty of aperture measurement by coordinate measuring machine (CMM) were analyzed. Two uncertainty models were established based on guide to the expression of uncertainty in measurement (GUM) and measurement system analysis(MSA). Measurement uncertainty for aperture of workpiece were evaluated by the two methods. Moreover, seen from the evaluation example, the results of uncertainty evaluation obtained from GUM and MSA were compared, the comparison result indicates that GUM method needs large amounts of computation and can only get the approximate results in the calculation of sensitivity coefficient but MSA method analyses the whole measurement system and evaluates uncertainty through a large number of experimental data,which is more convenient and more effective than GUM method.
Keywords: metrology;uncertainty evaluation;aperture measurement;CMM
2016, 42(1): 26-30 收稿日期: 2015-05-29;收到修改稿日期: 2015-07-08
基金项目: 国家自然科学基金项目(51275148);合肥工业大学青年教师创新项目(JZ2014HGQC0126)
作者简介: 徐磊(1993-),男,安徽滁州市人,硕士研究生,专业方向为测试计量技术及仪器。
参考文献
[1] 测量不确定度评定与表示:JJF 1059.1-2012[S]. 北京:中国质检出版社,2012.
[2] 王鹏,王明泉,韩婧. 导爆索内径尺寸测量不确定度的评定及数据处理模型[J]. 中国测试,2014,40(2):31-35.
[3] 李红莉,陈晓怀,王宏涛. 坐标测量机测量端面距离的不确定度评定[J]. 中国机械工程,2012,23(20):2401-2404.
[4] 连慧芳. 形位误差测量的不确定度评定[D]. 合肥:合肥工业大学,2010.
[5] 谢少锋,陈晓怀,张勇斌. 测量系统不确定度分析及其动态性研究[J]. 计量学报,2002,23(7):237-240.
[6] FENG C X, SAAL A L, SALSBURY J G, et al. Design and analysis of experiments in CMM measurement uncertainty study[J]. Precision Engineering,2007,31(2):94-101.
[7] 王秉刚, TUNG K. 测量系统分析[M]. 3版. 天津:中国汽车技术研究中心,2002:190-201.
[8] 谢少锋. 测量系统及其分析方法综述与分析[J]. 电子质量,2001(12):18-19.
[9] Geometrical Product Specifications(GPS)-Acceptance and reverification tests for coordinate measuring machines-Part 1:Vocabulary:ISO 10360-1:2000[S].2000.
[10] 齐皇仲,叶怀储,陈欢,等. 微小深度尺寸测量系统的误差与测量不确定度分析[J].中国测试,2013,39(z2):116-117.
[11] 叶德培. 测量不确定度理解评定与应用[M]. 北京:中国质检出版社,2013:26-27.
