[1]张丙伟,赵才军.平行板传输线法校准表面电流探头[J].东南大学学报(自然科学版),2011,41(4):723-728.[doi:10.3969/j.issn.1001-0505.2011.04.013]
 Zhang Bingwei,Zhao Caijun.Calibration of surface current probe using parallel plate transmission line[J].Journal of Southeast University (Natural Science Edition),2011,41(4):723-728.[doi:10.3969/j.issn.1001-0505.2011.04.013]
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平行板传输线法校准表面电流探头()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第4期
页码:
723-728
栏目:
电气工程
出版日期:
2011-07-20

文章信息/Info

Title:
Calibration of surface current probe using parallel plate transmission line
作者:
张丙伟赵才军
(东南大学机械工程学院,南京 211189)
Author(s):
Zhang BingweiZhao Caijun
(School of Mechanical Engineering, Southeast University, Nanjing 211189, China)
关键词:
平行板传输线表面电流探头校准传输阻抗
Keywords:
parallel plate transmission line surface current probe calibration transfer impedance
分类号:
TM930
DOI:
10.3969/j.issn.1001-0505.2011.04.013
摘要:
为测量金属结构件表面的传导电流,设计了耦合面为平面结构的电流探头.根据传输线理论设计并制作了平行板传输线校准装置,以获取探头的传输阻抗曲线.使用矢量网络分析仪测量探头放入前后装置输入端的电压驻波比均小于1.3.建立了电流探头信号检测的等效电路模型,并由此推导出传输阻抗的计算公式,测试值曲线与计算式得出的趋势吻合.从装置板宽和板长2个方向对传输阻抗测量结果的有效性进行了实验验证.结果表明,边缘效应会影响传输阻抗的测量结果; 不满足“1/3准则”的区域不适于传输阻抗的测量.通过测试合理确定校准区域,以有效进行表面电流探头传输阻抗的测量.
Abstract:
A surface current probe with flat structure of contacting surface was designed and manufactured, which can be used to measure conductive current that flows on metal structure surface. In order to obtain the transfer impedance values of the probe, a parallel plate transmission line device was designed based on the transmission line theory, and then constructed. The measured VSWR(voltage standing wave ratio) with or without probe placed in the line by vector network analyzer is less than 1. 3. An equivalent circuit model for the signal detection system of the current probe was established, from which the calculation formula of transfer impedance was derived. The curve shapes of measurement values of transfer impedance have a good agreement with the trend gained by the formula. The validity of the measurement results was verified experimentally in both width and length directions of the device. Experimental results show that the measured values of transfer impedance are influenced by fringe effects, and the transfer impedance cannot be measured in the region where the 1/3 criteria condition is not met. Therefore effective calibration area can be found by way of experiments, where useful transfer impedance values of surface current probe are obtained.

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备注/Memo

备注/Memo:
作者简介:张丙伟(1980—),男,博士生,bwiiz@yahoo.com.cn.
引文格式: 张丙伟,赵才军.平行板传输线法校准表面电流探头[J].东南大学学报:自然科学版,2011,41(4):723-728.[doi:10.3969/j.issn.1001-0505.2011.04.013]
更新日期/Last Update: 2011-07-20