飞机机载线缆的串扰耦合研究  

Research on crosstalk coupling of aircraft airborne cables

作　　者：张和茂 王生 薛晏 王旭[2] ZHANG Hemao;WANG Sheng;XUE Yan;WANG Xu(College of Mechanical and Electrical Engineering Shanxi Datong University,Datong 037000,China;Aircraft Maintenance and Engineering Co.,Ltd.,Beijing 100621,China)

机构地区：[1]山西大同大学机电工程学院,山西大同037000 [2]北京飞机维修工程有限公司,北京100621

出　　处：《电气应用》2025年第3期111-116,共6页Electrotechnical Application

基　　金：山西大同大学基础青年科研基金项目(2022Q40)。

摘　　要：串扰是典型的传导干扰形式之一,为保证线缆传输信号的质量,机载线缆广泛采用不同端接工艺,保证其传输信号的完整性。依据机载线缆的敷设工艺与电磁抗扰度测试标准实验要求,构建了含有端接工艺的理论解析模型与三维数值仿真模型。基于仿真模型,研究不同端接方式以及端接引线长度对串扰等电磁干扰的屏蔽效果。结果表明,双端接地的屏蔽效果显著,单端接地有一定的容性耦合抑制能力,且端接引线越长,对感性耦合的抑制能力越弱。Crosstalk is a common form of conducted interference,and various termination processes are widely employed to ensure the integrity of transmitted signals in order to guarantee their quality.Theoretical analytical models and three-dimensional numerical simulation models incorporating termination processes have been developed based on the laying process of airborne cables and the standard experimental requirements for electromagnetic immunity testing.Based on these simulation models,investigations have been conducted on the shielding effects of different termination modes and terminal lengths on electromagnetic interference such as crosstalk.The results show that the shielding effect of double-terminal grounding is obvious,and the single-terminal grounding has a certain capacitive coupling inhibition ability,and the longer the terminal lead,the weaker the inductive coupling inhibition ability.

关 键 词：机载线缆 屏蔽层 串扰 CST仿真 

分 类 号：TN9[电子电信—信息与通信工程]