Multi-channel time-domain rapid measurement and signal calculation method for electromagnetic interference
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摘要: 针对复杂电磁环境和复杂大型系统电磁干扰测量参数、测量点位及测量工况多的特点，采用传统扫频式频域测量方法具有代价高、耗时长等现实问题，提出了一种低频电磁干扰的多通道时域快速测量与信号计算方法，并研制出低频电磁干扰多通道时域快速测量系统，实验验证表明提出的测量、计算方法和研制出的测量系统可以准确得到复杂电磁环境和大型系统的低频电磁干扰特性，且测量速度快、成本低。Abstract: In view of the characteristics of many electromagnetic interference measurement parameters, measurement points and measurement conditions in complex electromagnetic environment and large-scale systems, the traditional sweeping frequency-domain measurement method has practical problems such as high cost and being time-consuming. This paper proposes a multi-channel time-domain rapid measurement and signal calculation method for low-frequency electromagnetic interference, and a multi-channel time-domain rapid measurement system for low-frequency electromagnetic interference is developed. The experimental results show that the proposed measurement, calculation method and the developed measurement system can accurately obtain the low frequency electromagnetic interference characteristics of complex electromagnetic environment and large-scale system, and the measurement speed is fast and the cost is low.
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图 2 考虑测量带宽的频谱计算方法流程图
Figure 2. Flow chart of spectrum calculation method considering measurement bandwidth
图 3 电磁干扰多通道时域快速测量系统组成
Figure 3. Electromagnetic interference multi-channel time domain rapid measurement system
图 4 测量系统验证结果
Figure 4. Verification results of electromagnetic interference measurement system
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