电子万能试验机力值计量比对总结报告

实验室间计量比对是质量控制管理中比较常见的方法，在质量控制管理中扮演着重要的角色，同时也是控制和衡量各实验室间校准能力的重要手段。计量比对工作由主导实验室负责实施，按照预先规定的条件，测量传递标准。通过分析测量结果的量值，确定各实验室测量结果与参考值的一致程度，分析各实验室的量值与参考值在合理的不确定度范围内的符合程度，从而判断该实验室的测量能力。本文以电子万能试验机力值计量比对为例，阐述了传递标准稳定性考核、传递标准参考值的确定、采用归一化偏差对参比实验室的测量结果进行一致性评判等过程。

Verification of PEMS Measurement Accuracy Based on Light-duty Vehicle Emission Testing System

Abstract: For the requirements of the portable emission measurement system (PEMS) measurement accuracy for limits and measurement methods for emissions from light-duty vehicles（CHINA 6）,based on the light-duty vehicle emission test system in steady-state conditions and WLTC conditions for PEMS gaseous pollutants, mass flow rate , particle number (PN) verify accuracy of measurement. The results showed that the relative measurement errors of CO, CO2, NOx, fuel consumption and mass flow rate were -5.49%、2.53%、10.55%、2.09% and -2.79%. The relative measurement errors of CO、CO2、NOx、fuel consumption and PN under WLTC condition were 6.67%、2.54%、12.96%、2.37% and-16.08%，which meeting the requirements of the regulations.