Effect of Electric Field on the Magnetic Probe

Li Zhang, Yu-Ru Feng, Tian-Hao Song, Xing-Chang Wei
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Abstract

A novel equivalent circuit model of a magnetic probe is proposed. It not only considers the coupling of the magnetic field under test on the probe output, but also considers the coupling of the environmental electric field on the probe output. The proposed equivalent circuit is verified by numerical and experimental results. A good correlation between the directly simulated/measured probe output and the predicted one is observed. Furthermore, based on the equivalent circuit, a formula is proposed to extract the magnetic and electric fields coupling coefficients. It can be considered as the extension of the available probe calibration method, where only the magnetic coupling coefficient is extracted. All of the examples show the feasibility of the proposed equivalent circuit and calibration formula.
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电场对磁探头的影响
提出了一种新的磁探头等效电路模型。它不仅考虑了被测磁场对探头输出的耦合,还考虑了环境电场对探头输出的耦合。数值和实验结果验证了所提出的等效电路。观察到直接模拟/测量的探头输出与预测输出之间具有良好的相关性。在等效电路的基础上,提出了磁场和电场耦合系数的计算公式。它可以看作是现有探针校准方法的扩展,其中只提取磁耦合系数。算例验证了所提出的等效电路和标定公式的可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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