导体直流电阻比对试验结果统计与分析

Statistics and Analysis of DC Resistance Comparison Test Results of Conductors

比对试验活动为检验检测结果的可比性提供了一个有效的途径,通过比对试验,可以客观准确地反映参加的检验检测机构的检测水平。运用稳健分析法的迭代算法A计算稳健平均值和稳健标准差,以最终稳健平均值作为指定值,最终稳健标准差作为能力评定标准差,用Z值结果评价各试验结果的可接受性。以稳健平均值和稳健标准差作为结果评定的指定值和能力评定标准差,可以抵消不对称离群分布带来的影响,更能真实评价检验结果。

The comparison test provides an effective way for the comparability of inspection and detection results.Through the comparison test,the detection level of participating inspection and testing institutions can be objectively and accurately reflected.The iterative algorithm a of robust analysis method is used to calculate the robust mean value and robust standard deviation.The final robust average value is taken as the specified value,and the final robust standard deviation is used as the standard deviation of ability evaluation.The acceptability of test results is evaluated by Z value results.Using robust mean and robust standard deviation as the specified value of result evaluation and standard deviation of ability evaluation can offset the influence of asymmetric outlier distribution and evaluate the test results more truly.