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Issue:
Error analysis on measuring low resistance with DC-Two arms bridge
Author(s):
Wang Youming
,
Zhang Zhili
,
Long Yong
Pages:
154
-
156
Year:
2007
Issue:
1
Journal:
ELECTRONIC MEASUREMENT TECHNOLOGY
Keyword:
凯尔文电桥
;
低电阻
;
误差分析
;
Abstract:
为了避免导线电阻和接线端的接触电阻对直流电桥测量低电阻的测量结果产生较大误差,采用凯尔文直流双臂电桥测量低电阻的阻值.本文介绍了凯尔文直流双臂电桥测量低电阻及其减少附加电阻影响的原理,分析了双臂直流电桥测量低电阻的平衡方程式修正项引入的附加误差,并从桥臂电阻选择及测量方法等方面提出了减小误差的措施.实验结果表明,该测量方法能较好地减少测量误差的影响,是一种实用的测量低电阻阻值的方法.
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