基于驻极体材料的机械天线式低频通信系统仿真研究  

Simulation and Analysis of Mechanical Antenna Low Frequency Communication System Based on Electret Material

作　　者：崔勇[1] 王琛[1] 宋晓[1] CUI Yong;WANG Chen;SONG Xiao(School of Automation Science and Electrical Engineering,Beihang University,Beijing 100191)

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191

出　　处：《自动化学报》2021年第6期1335-1342,共8页Acta Automatica Sinica

基　　金：“十三五”军委装备发展预研领域基金(61405180302);国家自然科学基金(51707006);北京市自然科学基金(4192033)资助。

摘　　要：在海洋信息网络体系日益重要的现在,水下航行器越来越得到世界各国的重视,无论是在民用还是在军用上,都扮演着重要的角色.与水下航行器的通信主要采用的是能以较小的损耗深入海水的低频通信技术,而目前已有的低频通信系统发射台规模庞大,天线占地广、天线暴露、目标明显、战时生存能力差,极易被摧毁且难于短期修复,且所需功耗巨大.鉴于此,本文提出了一种基于复合聚合物驻极体纳米材料的机械天线式低频通信方法,从理论上研究了其产生的低频通信信号及计算公式,定量分析了其在正常工作时的功率损耗和在不同介质中的衰减,且在有限元分析软件中建立了相关模型进行仿真研究,并通过理论解析模型和多物理场有限元模型的双重仿真结果的一致性,以及仿真计算结果与机械天线样机的实测结果的对比,验证了所提方法的可行性.Nowadays,the marine information network system is becoming more and more important.Underwater vehicles are getting more and more attention from all over the world,which plays an important role in civil and military applications.Communication with underwater vehicles mainly uses low-frequency communication technology to penetrate seawater with less loss.At present,the low-frequency communication system has several disadvantages such as large scale,wide antenna coverage,exposed and obvious target,poor survivability in wartime,which is easy to be destroyed and difficult to repair in a short time,and requires huge power consumption.In view of this,a mechanical antenna low-frequency communication method is proposed based on composite polymer electret nanomaterials,analysis of the low-frequency communication signal and its calculation formula is made in theory,and the power loss and attenuation in different media are analyzed quantitatively.Finally,the relevant model is established in the finite element analysis software to carry out the simulation.The feasibility of the proposed method is verified by the consistency of the simulation results of the theoretical analysis model and the multi physical field finite element model,and the comparison between the simulation results and the measured results of the mechanical antenna prototype.

关 键 词：海洋信息 水下航行器 低频通信 机械天线 驻极体 仿真建模 

分 类 号：U674.941[交通运输工程—船舶及航道工程] TN925[交通运输工程—船舶与海洋工程]