太赫兹科学与电子信息学报, 2016, 14 (1): 108, 网络出版: 2016-03-24  

一种提高脉冲电流测量准确度的方法

An improvement method on pulse current measurement accuracy
作者单位
中国工程物理研究院计量测试中心,四川绵阳 621999
摘要
对脉冲电流的测量,现用设备由数字示波器和电流探头组成,此测量装置的误差限为±1%,对误差限有较高要求的脉冲电流测量,该测量装置存在局限性。本文在上述测量设备的基础上,分析并找出常用方法产生误差的主要来源;为减小误差分量,提出了一种提高脉冲电流测量准确度的方法,即直流电流替代法;并详细阐述了直流电流替代法的工作原理和方法,对改进方法和常用方法进行不确定度分析比较。实验结果表明,改进方法可操作性强,能明显提高电流测量的准确度。
Abstract
The pulse current measuring equipment consists of digital oscilloscope and current probe, with the error limit of 1%. This error limit shows some defects when the measurement of the pulse current requires higher accuracy. The major sources of error is found out based on the aforementioned equipment in this paper,and an advanced method is put forward,which can decrease the component of error. In this advanced method, the pulse current is replaced by direct current(short for RDC). In addition,the working principle and method of RDC are illustrated in detail. Through the comparative analysis on the uncertainty with the former method, the proposed method has better operability and higher accuracy.

陈曙光, 邓国荣, 谭金玉, 何鹏. 一种提高脉冲电流测量准确度的方法[J]. 太赫兹科学与电子信息学报, 2016, 14(1): 108. CHEN Shuguang, DENG Guorong, TAN Jinyu, HE Peng. An improvement method on pulse current measurement accuracy[J]. Journal of terahertz science and electronic information technology, 2016, 14(1): 108.

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