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针对目前国内外较少研究电磁脉冲在供电线缆、通讯线缆和数据线缆等构成的各种传输网络及其重要电子终端设备中的传导耦合规律、效应评估的现状,以典型人体-金属模型(BMM)静电放电(ESD)电磁脉冲(EMP)作为注入源,对静电放电电磁脉冲在线缆网络中的传导耦合规律进行了仿真和实验研究。建立了树形结构和环形结构线缆网络的电磁拓扑仿真模型,并运用电磁拓扑理论中的BLT超矩阵方程,采用将网络传递函数和时域卷积相结合的计算方法,得到了各结点瞬态响应的仿真结果。搭建了静电放电电磁脉冲实验平台,对理论建模仿真结果进行了实验验证,实验结果与仿真结果具有较高的一致性,从而验证了理论方法的有效性。研究结果表明,线缆网络中某一端口的脉冲响应不仅与网络结构有关,而且受到网络中线缆长度、负载阻抗等变化的影响。
In view of the current domestic and international research on conduction coupling law and effect evaluation of electromagnetic pulse in various transmission networks composed of power supply cables, communication cables and data cables and their important electronic terminal devices, the typical human-metal Model (BMM) Electrostatic discharge (ESD) electromagnetic pulse (EMP) is used as an injection source to simulate and experimentally study the conduction and coupling rule of electrostatic discharge electromagnetic pulse in the cable network. The electromagnetic topology simulation model of tree structure and ring structure cable network is established. By using the BLT matrix equation in electromagnetic topology theory and the calculation method combining network transfer function and time domain convolution, Transient Response Simulation Results. Electrostatic discharge electromagnetic pulse experimental platform was set up, the theoretical modeling and simulation results were verified by experiments, the experimental results and simulation results have high consistency, and thus verify the effectiveness of the theoretical method. The results show that the impulse response of a certain port in the cable network is not only related to the network structure but also affected by the change of cable length and load impedance in the network.