| 平面度误差的不确定度估计方法及取样点数量的确定 |
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| 引用本文： | 魏超,余晓芬.平面度误差的不确定度估计方法及取样点数量的确定[J].航空计测技术,2008,28(6). |
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| 作者姓名： | 魏超 余晓芬 |
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| 作者单位： | [1]安徽省长江计量所,安徽合肥230088 [2]合肥工业大学仪器科学与光电工程学院,安徽合肥230009 |
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| 摘 要： | 主要阐述在工程测量方案设计阶段,如何采用最小二乘法估算被测要素平面度误差的不确定度和如何确定合理的采样点数,即测量设备的单点坐标不确定度已知时,采用理想点坐标估算法,计算不定乘数系数,继而获得被测要素的采样点数量及其最小二乘法平面度误差的测量不确定度.
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| 关 键 词： | 平面度 误差 不确定度 最小二乘法 |
Estimation Method of Uncertainty of Flatness Error and Determination of Quantity of Sampling Points |
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| WEI Chao,YU Xiao-fen.Estimation Method of Uncertainty of Flatness Error and Determination of Quantity of Sampling Points[J].Aviation Metrology & Measurement Technology,2008,28(6). |
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| Authors: | WEI Chao YU Xiao-fen |
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| Institution: | WEI Chao1,YU Xiao-fen2(1. Anhui Changjiang Institute of Metrology,Hefei 230088,China,2. School of Instrument Science , Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | This article focuses on measuring the project design stage to estimate the uncertainty of flatness error by the least-squares fitting and how to determine a reasonable method of sampling points.When the single point coordinate uncertainty is known,adopting the ideal point coordinate estimating method,the volatile multiplier factor is calculated then the quantity of sampling point of the measurand element and the least-square flatness error uncertainty of measurement are obtained. |
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| Keywords: | flatness error uncertainty least square |
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