基于频响函数测量脉冲磁场屏蔽效能的新方法

Measurement for shielding effectiveness of pulsed magnetic field based on frequency response function

摘要:

脉冲磁场屏蔽效能测量是在时域通过对脉冲波形进行测量并按峰值衰减量确定的。从连续波频率响应出发，研究了一种基于频率响应函数构建系统模型，并根据建立的模型计算屏蔽体脉冲磁场屏蔽效能的方法。对该方法的可行性进行了实验分析，结果表明，该方法测量结果与时域测量结果吻合得较好，从而为脉冲磁场屏蔽效能的测量提供了新的测试手段。

Abstract:

In order to assess pulse wave shielding effectiveness of shielding room from the traditional Continuous Wave(CW) test results，a frequency response function method was proposed. Taking the measurement of shielding effectiveness for pulsed magnetic field as an example，experiments and analysis were carried out to verify the effects of the above-mentioned approach. The result showed that the estimated pulse inside shielding enclosure was close to the real measured waveforms. This technology provides an effective mean for the conversion of CW measurement results to pulsed field shielding effectiveness.