外径千分尺测量误差占比分析  

Analysis on the Proportion of Measurement Error of Outside Micrometer

作　　者：蒋春晨 高铭晶 田进鑫 申娴 方佳凯 徐守华 JIANG Chunchen;GAO Mingjing;TIAN Jinxin;SHEN Xian;FANG Jiakai;XU Shouhua(Zhongtian Technology Industrial Wire&Cable System Co.,Ltd.,Nantong 226010,Jiangsu,China)

机构地区：[1]中天科技装备电缆有限公司,江苏南通226010

出　　处：《光纤与电缆及其应用技术》2024年第1期37-39,41,共4页Optical Fiber & Electric Cable and Their Applications

摘　　要：为了确保导体电阻率测量准确性,对线缆产品使用性能作出判定,必须减小导体单丝外径测量误差。导体单丝外径千分尺测量误差主要由系统误差和随机误差组成。在千分尺标准要求误差许可内,对系统误差和人为误差的占比情况以及误差出现原因进行了试验研究。研究结果发现,测量误差围绕千分尺系统误差值上下波动,千分尺系统误差占比约72.5%,人为误差占比约27.5%;同时因检验人员测量能力不同,所获测量结果标准偏差存在明显差异。为提升导体单丝外径测量结果准确性,宜选用系统误差较小的外径千分尺,并根据标准要求适当加严误差要求。In order to ensure the accuracy of conductor resistivity measurement and make judgments on the performance of cable products,it is necessary to reduce the measurement error of the outer diameter of single wire.The measurement error of single wire outside micrometer mainly consists of system error and random error.The experimental research is conducted on the proportion of system error and human error,as well as the reasons for the occurrence of errors,within the error tolerance required by the micrometer standard.The research results find that the measurement error fluctuates around the system error value of the micrometer,with the micrometer system error accounting for approximately 72.5% and human error accounting for approximately 27.5%.At the same time,due to the different measurement abilities of the inspectors,there are significant differences in the standard deviation of the measurement results obtained.To improve the accuracy of measuring the outer diameter of single wire,it is advisable to use an outside micrometer with a small system error,and tighten the error requirements appropriately according to standard requirements.

关 键 词：外径千分尺 测量误差 系统误差 人为误差 测量不确定度 

分 类 号：TH711.4[机械工程—测试计量技术及仪器]