机载多芯屏蔽线束的传导敏感度研究

doi:10.16180/j.cnki.issn1007-7820.2025.05.013

电子科技 ›› 2025, Vol. 38 ›› Issue (5): 89-94.doi: 10.16180/j.cnki.issn1007-7820.2025.05.013

• • 上一篇

机载多芯屏蔽线束的传导敏感度研究

郗松岳¹, 徐琦², 李继成¹, 李天傲², 刘亮³, 路宏敏²()

1.西安西测测试技术股份有限公司,陕西西安 710065
2.西安电子科技大学电子工程学院,陕西西安 710071
3.西安航天精密机电研究所,陕西西安 710100

收稿日期:2024-02-15 修回日期:2024-03-17 出版日期:2025-05-15 发布日期:2025-05-14
通讯作者: 路宏敏 E-mail:hmlu@mail.xidian.edu.cn
作者简介:郗松岳(1991-),男,工程师。研究方向:电磁兼容性测试与分析。
徐琦(1998-),男,硕士研究生。研究方向:电磁兼容、射频电路。
基金资助:
国防基础科研类项目(MKF20230377)

Research on Conducted Susceptibility of Airborne Multicore Shielded Wire

XI Songyue¹, XU Qi², LI Jicheng¹, LI Tianao², LIU Liang³, LU Hongmin²()

1. Xi'an XICE Test Technology Co.Ltd., Xi'an 710065,China
2. School of Electronic Engineering,Xidian University,Xi'an 710071,China
3. Xi'an Aerospace Precision Electromechanical Institute,Xi'an 710100,China

Received:2024-02-15 Revised:2024-03-17 Online:2025-05-15 Published:2025-05-14
Contact: LU Hongmin E-mail:hmlu@mail.xidian.edu.cn
Supported by:
National Defense Basic Research Projects(MKF20230377)

摘要/Abstract

摘要：

随着航空电子系统不断复杂化,多芯屏蔽线束在复杂电磁环境中的传导敏感度问题影响着机载设备的可靠性。针对多芯屏蔽线束的传导敏感度问题,文中研究了不同芯线数量的线束其单端接地与双端接地的屏蔽效果,提出了一种结合实验测试与数据拟合的协同方法。基于已有传导敏感度测量系统,在10 kHz~0.4 GHz频率范围内对双芯、四芯、八芯线束的感应电流进行测试与分析。结果表明,多芯线束中单根芯线的敏感度电平随芯线数量增加而降低。频率小于300 MHz的双端接地线束屏蔽效果优于单端接地,八芯线束的单芯感应电流仅为单芯线束的10%~40%,为机载多芯屏蔽线束的设计与工程应用提供了重要参考。

关键词: 机载设备, 多芯线束, 传导敏感度, 接地, 协同方法, 电磁兼容性, 感应电流, 传输线理论

Abstract:

With the increasing complexity of avionics systems, the problem of the conducted susceptibility of multi-core shielded wire harnesses in complex electromagnetic environments affects the reliability of airborne equipment. In view of the conducted susceptibility problem of multi-core shielded wire harnesses, this study investigates the shielding effects of single-ended grounding and double-ended grounding for wire harnesses with different numbers of core wires, and proposes a collaborative method combining experimental testing and data fitting. Based on the existing conducted susceptibility measurement system, the induced currents of two-core, four-core, and eight-core wire harnesses are tested and analyzed within the frequency range of 10 kHz to 0.4 GHz. The results show that the susceptibility level of a single core wire in a multi-core wire harness decreases as the number of core wires increases. For double-ended grounded wire harnesses, the shielding effect is better than that of single-ended grounded ones when the frequency is less than 300 MHz. The induced current of a single core in an eight-core wire harness is only 10% to 40% of that in a single-core wire harness, which provides an important reference for the design and engineering application of airborne multi-core shielded wire harnesses.

Key words: airborne equipment, multi core wire harness, conductivity sensitivity, grounding, collaborative approach, EMC, induced current, transmission line theory

中图分类号:

TN97

郗松岳, 徐琦, 李继成, 李天傲, 刘亮, 路宏敏. 机载多芯屏蔽线束的传导敏感度研究[J]. 电子科技, 2025, 38(5): 89-94.

XI Songyue, XU Qi, LI Jicheng, LI Tianao, LIU Liang, LU Hongmin. Research on Conducted Susceptibility of Airborne Multicore Shielded Wire[J]. Electronic Science and Technology, 2025, 38(5): 89-94.

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序号	电缆名称	芯线规格	芯线数量	连接器类型	长度/m
1	01TR-29TR	AWG22	2芯	M16-3 连接器	6
2	02TR-36FR	AWG22	4芯	M16-3 连接器	6
3	03TR-47JR	AWG24	8芯	M16-3 连接器	6
4	04UR-02UW	AWG20	1芯	M16-3 连接器	6

序号	实验线缆	实验设置	采集数据
1	单芯屏蔽线束	电流由A端注入, A、B端均不接地	芯线电流
2	2芯屏蔽线束 4芯屏蔽线束 8芯屏蔽线束	电流由A端注入,B端监测, A、B端连接器接地	芯线电流
3	2芯屏蔽线束 4芯屏蔽线束 8芯屏蔽线束	电流由A端注入,B端监测, A端不接地,B端连接器接地	芯线电流

线束名称	频点频率	感应电流
04UR-02UW	500 kHz	91.60 mA
	1.5 MHz	18.67 mA
	2.5 MHz	11.23 mA
	3.5 MHz	8.59 mA
	4.0 MHz	6.24 mA
01TR-29TR	500 kHz	38.91 mA
	1.5 MHz	14.02 mA
	2.5 MHz	10.93 mA
	3.5 MHz	8.37 mA
	4.0 MHz	5.59 mA
02TR-36FR	500 kHz	21.67 mA
	1.5 MHz	7.46 mA
	2.5 MHz	5.63 mA
	3.5 MHz	4.23 mA
	4.0 MHz	2.73 mA
03TR-47JR	500 kHz	16.72 mA
	1.5 MHz	7.20 mA
	2.5 MHz	5.18 mA
	3.5 MHz	3.83 mA
	4.0 MHz	2.59 mA

机载多芯屏蔽线束的传导敏感度研究

Research on Conducted Susceptibility of Airborne Multicore Shielded Wire

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