基于测量不确定度的测量过程特性分析

Analysis of Measurement Process Characteristics Based on Measurement Uncertainty

为了合理评估测量过程,应全面掌握过程特性,分析因测量不确定度产生的合格概率和误判风险及其影响。结合测量管理体系对测量过程的要求进行定量分析,给出不同测量能力指数下合格概率的精确数值和计算实例,为测量过程的符合性判定提供参考。计算结果表明,当测量结果位于合格区间上、下限附近时,误判概率增大,应采取相应措施降低风险,满足测量要求。

In order to reasonably evaluate the measurement process,the qualified probability and misjudgment risk caused by measurement uncertainty and their impact should be analyzed.The accurate values and calculation examples of qualified probability under different measurement capability indexes are given,which can provide reference for the compliance judgment of measurement process.The calculation results show that when the measurement results are near the upper and lower limits of conformance interval,the probability of misjudgment increases,and corrective action should be taken to reduce the risk to meet the measurement requirements.