外径千分尺测量误差占比分析
Analysis on the Proportion of Measurement Error of Outside Micrometer
蒋春晨 1高铭晶 1田进鑫 1申娴 1方佳凯 1徐守华1
作者信息
- 1. 中天科技装备电缆有限公司,江苏南通 226010
- 折叠
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.
Abstract
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Key words
outside micrometer/measurement error/system error/human error/measurement uncertainty引用本文复制引用
出版年
2024
NETL
NSTL
万方数据