混响室搅拌器位置优化的数值分析  

Numerical Analysis of Stirrer Position Optimization in a Reverberation Chamber

作　　者：崔耀中[1] 魏光辉[1] 范丽思[1] 万浩江[1] 刘小强[1] 

机构地区：[1]军械工程学院强电磁场环境模拟与防护技术国防科技重点实验室,石家庄050003

出　　处：《电讯技术》2010年第6期114-117,共4页Telecommunication Engineering

基　　金：国防科技重点实验室基金资助项目(9140C87030310JB3402)~~

摘　　要：为研究混响室搅拌器位置对测试区域场均匀性影响,采用基于矩量法的电磁仿真软件FEKO对混响室仿真模型进行数值计算,通过与遗传算法相结合对混响室搅拌器位置进行优化,得到了搅拌器位置的最优解以及相应的表征混响室测试区域场均匀性的电场标准偏差值。研究表明:搅拌器位置影响测试区域场均匀性,当搅拌器位置处于最优配置时,测试区域各轴向电场标准偏差较初始状态分别下降了47.4%、20.1%、57.1%,总标准偏差下降了44.0%,测试区域场均匀性较优化前有所提高,提高了混响室用于电磁兼容测试时的准确度。In order to analyse the effect of stirrer position on field uniformity in a reverberation champ, r, the simulation model is constructed with FEKO based on moments method（MOM）. The method of combining genetic algorithm（GA） with MOM is used to analyse and optimize the reverberation chamber. The optimal position of stirrer and the standard deviation of the electric field in the reverberation chamber are obtained. The optimal results show that compared with initial standard deviation, the field deviation of every axis decreases by 47.4%, 20.1%, 57.1%, respectively, and the whole - deviation decreases by 44.0 %. The field uniformity is improved in the work space of the reverberation chamber by optimization, and the accuracy of electromagnetic compatibility （EMC） testing in a chamber is improved.

关 键 词：电磁兼容测试 混响室 搅拌器位置 遗传算法 矩量法 场均匀性 

分 类 号：TN011[电子电信—物理电子学] O441[理学—电磁学]