传统不确定度评定方法在l型皮托管静管风速测量中的适用性分析

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI:10.1109/ICEMI46757.2019.9101564

Wei Ming-ming, L. Xiaogang, Miao Jie, Zou Li, Wen Chunhua, Liang Changchun, Xu Shan

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引用次数: 0

摘要

《指南》中使用皮托管进行风速测量不确定度评定对测量不确定度表达法(GUM)的适用性还有待验证。首先，利用GUM和蒙特卡罗方法(MCM)对皮托管风速测量值的不确定度进行了评定。然后，通过JCGM 101:2008 GUM补编1给出的方法验证了GUM方法的适用性，得出了GUM方法仍然适用于皮托管风速测量不确定度评定的结论。最后，将GUM方法与MCM方法进行比较，GUM方法对风速测量结果概率分布的波动性和分散性的影响程度分别为-0.31%~0.33%和-0.48%~0.26%。由于对风速实测值的影响程度相对较小，因此在应用时可以根据实际情况决定是否修正。

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Applicability analysis of traditional uncertainty evaluation method for wind speed measurement with L-shaped pitot static tube

The applicability of wind speed measurement uncertainty evaluation with the pitot tube for the Guide to the expression of uncertainty in measurement (GUM) method is yet to be validated. Firstly, the uncertainty of the measured value of wind speed by the pitot tube is evaluated by GUM and Monte Carlo method (MCM). Then, the applicability of GUM method is verified by the method given in JCGM 101:2008 GUM supplement1, and it is concluded that the GUM method is still applicable to the evaluation of uncertainty in the wind speed measurement of pitot tube. Finally, comparing the GUM method with MCM, the influence degree of the GUM method on the volatility and dispersion of the probability distribution of wind speed measurement result is -0.31%~0.33% and -0.48%~0.26%, respectively. Since the degree of influence is small to the measured value of wind speed relatively, it is possible to determine whether to correct it according to the actual situation when applying.

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2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)

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