测量标准因素判定(x)控制图异常导致标准核查不通过的分析

依据GB/T27025-2008《检测和校准实验室能力的通用要求》,计量技术机构应开展测量标准核查,休哈特控制图是标准核查工作的主要方法.本文简要介绍了基于休哈特控制图理论的标准核查方法,对测量标准因素引起的三种控制图异常进行了深入讨论,对异常原因进行了追溯,分析了测量标准可能存在的问题,并给出了排除失控因素的建议.

Analysis of Standard Verification Failure Caused by Abnormal (x) Control Chart of Measurement Standard Factors

According to GB/T 27025-2008 " General Requirements for the Capability of Testing and Calibration Laboratories",metrology technical institutions should carry out measurement standard verification,and the Shewhart control chart is the main method of standard verification. This article briefly introduces the standard verification method based on the Shewhart control chart theory,discusses in depth the three control chart abnormalities caused by the measurement standard factors,traces the cause of the abnormality,analyzes the possible problems of the measurement standard,and gives Suggestions for excluding out-of-control factors have been made.