伏安法测电阻实验中量程转换对测量精度的影响

doi:10.14139/j.cnki.cn22-1228.2022.05.027

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摘要

在伏安法测电阻的实验中，测量电阻伏安特性曲线时需要多次测量。为了充分利用电流表的测量精度，需要转换电流表量程，但与此同时电流表的内阻也随之改变。如何考虑量程改变带来的误差是本实验的一个重要问题。文章通过引入分段修正函数对测量数据进行处理，从而自洽地考虑了量程转换时电流表内阻改变对数据处理的影响，使数据处理方法更加合理，所得结果更加精确。

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	梅诗雨
	刘瑞琪
	吴超浩
	赵　颖

关键词: 伏安法测电阻量程转换分段修正函数

Abstract:

In the experiment of measuring resistance by voltammetry ,it is usually to measure the voltammetriccharacteristic curve of resistance.ln order to make full use of the measuring accuracy of the ammeter,it isusually necessary to change the ammeter range.However,the internal resistance of the ammeter also changes.How to consider the error caused by ammeter range change is an important problem in this experiment.Aoiecewise correction function is introduced to overcome this problem.Accordingly the influence of the change otammeter resistance on the measurement accuracy is considered self-consistently, which makes the dataorocessing method more reasonable.

Key words: measuring resistance by voltammetry changing the ammeter range piecewise correction function

出版日期: 2022-10-25 发布日期: 2022-10-25 整期出版日期: 2022-10-25

ZTFLH:

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引用本文:

梅诗雨, 刘瑞琪, 吴超浩, 赵　颖. 伏安法测电阻实验中量程转换对测量精度的影响 [J]. 大学物理实验, 2022, 35(5): 121-124.
MEI Shiyu, LIU Ruiqi, WU Chaohao , ZHAO Ying. Influence of Range Conversion on Measurement Accuracyin Measuring Resistance by Voltammetry . Physical Experiment of College, 2022, 35(5): 121-124.

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http://dawushiyan.jlict.edu.cn/CN/10.14139/j.cnki.cn22-1228.2022.05.027 或 http://dawushiyan.jlict.edu.cn/CN/Y2022/V35/I5/121

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