项目名称: 电大尺寸腔室漫射场电磁环境与电子系统的耦合规律研究
项目编号: No.51277180
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 电工技术
项目作者: 王庆国
作者单位: 中国人民解放军军械工程学院
项目金额: 82万元
中文摘要: 在大型装备和车辆的仪器舱/控制舱、飞机/航天器工作舱、油料箱等复杂电大尺寸腔室中,由于外部射频威胁、特别是高强度辐射场HIRF以及内部电子系统和个人电子设备(PED)的干扰,电磁场在腔室内多次反射,形成传播和极化方向随机的漫射场(diffuse-field),由于谐振现象的强场耦合,严重威胁着灵敏仪器的工作稳定性、装备的战技性能、飞行器的飞行以及车辆安全,甚至造成灾难。漫射场与电子系统的耦合遵从卡方分布,电场测量具有指数形式的概率密度分布函数。本课题利用漫射场统计理论和计算方法、并结合传输线和电磁拓扑理论,通过理论建模、仿真计算和典型电路单元、网络电结构系统的电磁响应实验,研究漫射场与电子系统的相互作用机理、耦合规律和响应预测方法,分析边界条件及其时空变化、腔室装载等对场分布特征和电磁耦合的影响,为提高大型装备、武器系统、车辆或飞行器的安全与可靠性、仪器设备电磁兼容与安全设计提供理论依据。
中文关键词: 电大尺寸腔室;漫射场电磁环境;耦合规律;混响室;传输线网络
英文摘要: Within electrical large enclosures of large dimenssion chambers of weapon system, aircraft/spacecraft, trains or large fuel tanks, there are many threatens from outer RF radiation, especially high intensity radiated field (HIEF), and also from inner elctronic systems and portable electronic devices (PED). Because of multi-path reflections of elctromagnetic wave within enclosures, diffuse-field will be formed with random transporting direction and polarization, and so high intensity field will appear because of resonance. These high intensity field will strongly threaten the working quality of inner equipment, effectiveness of weapons, safety of air planes, spacecraft or trains, and even causes disasters. It has be shown that the coupling of diffuse field and elctronic system follows Chi square distributions and electromagnetic measurement follows the exponential format of possibility density distribution functions. By applying statistical theories of diffuse field and modeling and electromagnetic response experiments of typical network structural system , this project will focus on the research of coupling mechanism of diffuse field and equipment, dependences of diffuse field on boundary variation and loading effect.The project will try to formulate a systematic theory on the coupling process between diffuse fie
英文关键词: electrical large cavity/enclosure;diffused field;coupling process;reverberation chamber;transmission line network