复杂线束在双BCI耦合下的终端响应机理

石旭东; 张和茂; 赵宏旭; 李瑞蒲; 王雪飞

doi:10.13700/j.bh.1001-5965.2020.0336

复杂线束在双BCI耦合下的终端响应机理

doi: 10.13700/j.bh.1001-5965.2020.0336

中国民航大学电子信息与自动化学院, 天津 300300

基金项目:

国家自然科学基金 51377161

航空科学基金 20182667010

中央高校基本科研业务费专项资金 3122018D003

天津市高等学校创新团队培养计划 TD13-5071

详细信息

通讯作者:
赵宏旭, E-mail: zhx2581@163.com

中图分类号: V240.3;V241.9;TM151
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出版历程
- 收稿日期: 2020-07-13
- 录用日期: 2020-10-16
- 网络出版日期: 2021-09-20

Terminal response mechanism of complex wire harness under double BCI coupling

College of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China

Funds:

National Natural Science Foundation of China 51377161

Aeronautical Science Foundation of China 20182667010

the Fundamental Research Funds for the Central Universities 3122018D003

Training Plan for Innovation Teams in Tianjin Colleges and Universities TD13-5071

More Information

Corresponding author: ZHAO Hongxu, E-mail: zhx2581@163.com

摘要

摘要:
高强度辐射场实验室环境下构建困难，应用双大电流注入(BCI)法替代辐照法进行抗扰度研究具有广阔的前景。针对当前双电流钳与线束耦合机理不清晰的问题，建立了双电流钳与线束耦合的精确解析模型。采用先分段后级联的方法对线束进行研究，首先在电流钳与线束的耦合区间建立π型等效电路模型，然后在电流钳与线束的非耦合区间基于传输线理论构建链路参数矩阵，最后将各区间级联为线束终端响应预测模型。基于有限积分法建立数值电磁仿真模型，比较解析模型与数值仿真模型对线束终端响应的预测结果，结果显示：二者对线束终端响应电压的求解结果有较好的一致性，MAPE为17%，进而验证了模型的有效性。应用模型分析电流钳与线束的相对位置对终端响应电压的影响，结果表明：低频段几乎无影响，超过100 MHz，线束终端响应电压的幅值与谐振点发生改变。
- 大电流注入(BCI) /
- 传输线理论 /
- 链路参数 /
- 抗扰度 /
- 级联
Abstract:
It is difficult to construct in a high-intensity radiation field laboratory environment, and the application of dual Bulk Current Injection (BCI) probe instead of irradiation methods for interference immunity research has broad prospects. Aimed at the current unclear coupling mechanism between dual bulk current injection probe and wire harnesses, accurate model of dual bulk current injection probe coupled with wire harness is established. Using the method of segmentation and then cascading, wire harness is studied. First, the equivalent circuit model is established in the coupling zone between the probe and the harness, and then the link parameter matrix is constructed based on the transmission line theory in the uncoupling zone. Finally, it could be cascaded into a wire harness terminal response prediction model. A numerical electromagnetic simulation model is established based on finite integration method, and the prediction results of the prediction model and the numerical simulation model for the wire harness terminal response are compared. The results show that the two have good agreement on the results of the wire harness terminal voltage, and MAPE is 17%, which further verifies the effectiveness of the model. Using the model to analyze the influence of the relative position of the harness and probe on the response voltage of the terminal, the results show that the relative position has no effect in the low frequency band, exceeding 100 MHz, and the amplitude and resonance point of the terminal voltage will change.
- Bulk Current Injection (BCI) /
- transmission line theory /
- link parameter /
- interference immunity /
- cascade

HTML全文

图 1 线束分段示意图

Figure 1. Schematic diagram of wire harness segmentation

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图 2 多线束耦合集总参数电路

Figure 2. Multi-wire-harness coupling lumped parameter circuit

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图 3 耦合区间截面

Figure 3. Cross-section of coupling zone

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图 4 CST模型剖面

Figure 4. Sectional view of CST model

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图 5 线束构型示意图

Figure 5. Schematic diagram of wire harness configuration

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图 6 CST电磁仿真模型

Figure 6. CST electromagnetic simulation model

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图 7 线缆数为1的结果对比

Figure 7. Comparison of results with cable count of 1

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图 8 线缆数为4的结果对比

Figure 8. Comparison of results with cable count of 4

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图 9 线缆数为7的结果对比

Figure 9. Comparison of results with cable count of 7

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图 10 电流钳与线束的相对位置对中心线缆1的影响

Figure 10. Influence of the relative position of current probe and wire harness on central cable number 1

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图 11 电流钳与线束终端距离对中心线缆1的影响

Figure 11. Influence of the distance between current probe and cable terminal on central cable number 1

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表 1 一阶Debye模型参数

Table 1. First-order Debye model parameters

参数	数值
电导率σ/(S·m^-1)	1.3
稳态常数	1
静态常数	375
驰豫时间/ns	0.5

下载: 导出CSV

表 2 电流钳结构参数

Table 2. Structural parameters of current injection probe

参数	数值
r_in/mm	24
r_out/mm	39
r_pin/mm	16
l_c/mm	130
t_c/mm	1
w_c/mm	6
w/mm	50
W/mm	63
N₁	1

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