替代法测量改装表内阻的误差分析

doi:10.14139/j.cnki.cn22-1228.2024.01.008

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摘要

本文旨在探讨电表改装实验中，用替代法测量表头内阻时，电源电压的取值对改装表内阻测量的影响。通过理论计算和实验探究的方法，发现较大电源电压导致测量误差增加的本质原因是保护电阻在整个电路的电阻中占比太高。本文的研究结果为提高替代法测量电阻的精度提供改进方向。

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	刁宇轩
	邹宸钰
	王嘉睿
	谢晓梅
	熊水兵
	杨利建

关键词: 替代法改装表内阻不确定度电表灵敏度

Abstract:

The purpose is to discuss the influence of the value of the power supply voltage on the measurement of the internal resistance of the modified meter when the replacement method is used to measure the internal resistance of the meter in the experiment of the meter modification． Through theoretical calculation and experimental research，we found that the essential reason for the increase in measurement error caused by large power supply voltage is that the protection resistance accounts for too high a proportion of the resistance of the whole circuit．The research results of this paper provide an improvement direction for improving the accuracy of resistance measurement by substitution method．

Key words: substitution method internal resistance of refitted ammeter uncertainty sensitivity

出版日期: 2024-02-25 发布日期: 2024-02-25 整期出版日期: 2024-02-25

ZTFLH:

O 4-33

引用本文:

刁宇轩, 邹宸钰, 王嘉睿, 谢晓梅, 熊水兵, 杨利建 . 替代法测量改装表内阻的误差分析 [J]. 大学物理实验, 2024, 37(1): 37-40.
DIAO Yuxuan, ZOU Chenyu, WANG Jiarui, XIE Xiaomei, XIONG Shuibing, YANG Lijian . Error Analysis of Measuringthe Internal Ｒesistance of Ｒefitted Ammeter by Substitution Method . Physical Experiment of College, 2024, 37(1): 37-40.

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http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2024.01.008 或 http://dawushiyan.jlict.edu.cn/CN/Y2024/V37/I1/37

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