舰船线束串扰的预估

项目名称： 舰船线束串扰的预估

项目编号： No.51209055

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 水利科学与海洋工程学科

项目作者： 孙亚秀

作者单位： 哈尔滨工程大学

项目金额： 25万元

中文摘要： 在舰船有限空间内，不同类型线缆敷设密集，线缆线束间串扰已成为舱室内主要干扰形式，并严重影响舰船的电磁兼容性。本项目针对舰船线缆种类多、数量大、频谱宽等特点，提出"线缆等效"快速串扰分析方法，即将线束中大量线缆按一定规则分组，除干扰线和受扰线外，剩余线缆每组用一根线缆等效，通过优化等效后的线缆参数，在保证一定计算精度的前提下，大大减少分析的线缆数量，从而实现舰船大数量线缆串扰的预估。线缆寄生参数是串扰产生的关键因素，根据舰船静态和动态线缆分布参数及串扰差异大的情况，舰船静态时采用成本低、有一定精度且不用考虑网格疏密和数量的镜像法来提取有绝缘层的非均匀媒质线缆参数。根据舰船动态时线缆间距的不确定性，采用模糊推理法估算导线间距，并使用蒙特卡罗法预估有绝缘层的非均匀媒质线缆寄生参数和串扰的统计特性，真实体现线缆在线束内的几何布置。本项目的顺利完成为舰船在设计初期线缆线束的合理分类扎捆提供理论依据。

中文关键词： 线束串扰；寄生参数；串扰模型；多导体传输线理论；时域有限差分法

英文摘要： Crosstalk of cable bundles has become the main electromagnetic interference and impacted the electromagnetic compatibility in cabin because all kinds of cables are densely layed in finity space. Based on cable characteristic, many kinds, great quantity, broad frequency spectrum, crosstalk analysis difficult, the cable bundle equivalent method is proposed in this project. Comparing the terminal loads with the common mode impedance, the cables are separated into many groups, and each group of cable turns to be an equivalent cable without overlapping with other equivalent cable except interference cable and sensibility cable. The number of cable is far less than that of the complete cable bundle. Simulation estimate of crosstalk ship cables is realized. Crosstalk of cables is given birth to by parasitic parameter. Parasitic parameter and crosstalk is difference between static and dynamic state. According to the image method, inhomogeneous media cable parameter with insulating is derived. The merit of image method is low cost and certain accuracy. Image method mustn't consider grid sparsity and dense and number. The fuzzy inference algorithm is adopted to estimate the distance between cables because the distance between cables is not certain in ship dynamic state. A statistical Prediction model for the parasitic par

英文关键词： crosstalk of cable bundles；parasitic parameters；crosstalk model；multi-conductor transmission line theory；Finite Difference Time Domain