摘 要:运用贝塞尔公式进行 A 类不确定度评定时,通常包含了重复性和分辨力引入的不确定度分量。文章以 FLUKE 5700 为标准,将 Agilent 34401 作为被校准仪表,对其进行不确定度评定,并讲述了重复性引入的不确定度与分辨力引入的不确定度之间的关系。以此为基础,进一步讨论了重复性引入不确定度的读数方法,以及多功能、多量程数字式仪表如何确定分辨力引入的不确定度。
关键词:重复性;分辨力;数字式仪表;A 类不确定度
DOI:10.19850/j.cnki.2096-4706.2021.24.043
中图分类号:TH701 文献标识码:A 文章编号:2096-4706(2021)24-0169-04
Analysis on Uncertainty Introduced by Repeatability and Resolution
LI Yinlong, HAN Shuai, YANG Yu, LIU Changhai
(People’s Liberation Army 63893, Luoyang 471000, China)
Abstract: When the Bessel formula is used to evaluate the type A uncertainty, the uncertainty components introduced by the repeatability and resolution are usually included. This paper takes FLUKE 5700 as the standard, and uses the Agilent 34401 as the calibrated instrument which is evaluated its uncertainty, and describes the relationship between the uncertainty introduced by repeatability and the uncertainty introduced by resolution. Based on this, the numerical reading method of the uncertainty introduced by repeatability and how the multi-function or multi-range digital meters determine the uncertainty introduced by resolution are further discussed.
Keywords: repeatability; resolution; digital instrument; type A uncertainty
参考文献:
[1] 姚尧,田郁郁,王志鹏,等 . 可燃气体报警器示值误差测量结果的不确定度评定 [J]. 低温与特气,2018,36(4):40-42.
[2] 孙立军,党士忠,张涛,等 . 流量计性能受流量稳定性影响实验 [J]. 天津大学学报(自然科学与工程技术版),2018,51(4): 422-432.
[3] 倪育才 . 实用测量不确定度评定 [M]. 北京:中国计量出版社,2010.
[4] 黎清容,宋婧 . 实验室测量系统的准确度评价方法 [J]. 广东建材,2021,37(7):42-44.
[5] 罗雪梅,张淑芳,夏继军,等 . 对分辨力与分辨率用法之浅见 [J]. 编辑学报,2012,24(S1):26-27.
[6] 卫兵,卿燕玲,傅贞,等 . 脉冲高电压幅值测量的不确定度分析 [J]. 强激光与粒子束,2009,21(10):1561-1565.
作者简介:李银龙(1983.09—),男,汉族,河南平顶山人,助理工程师,本科,研究方向:电抗技术。