基于遗传算法的混响室桨叶夹角优化数值分析  

Numerical Analysis of the Angle Between the Oars in a Reverberation Chamber Based on Genetic Algorithm

作　　者：崔耀中[1] 魏光辉[1] 范丽思[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,河北石家庄050003

出　　处：《河北大学学报（自然科学版）》2010年第5期449-453,共5页Journal of Hebei University(Natural Science Edition)

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

摘　　要：采用电磁仿真软件FEKO对混响室仿真模型进行数值分析,以表征混响室测试区域场均匀性的电场标准偏差值为目标函数,结合遗传算法对混响室搅拌器桨叶夹角进行优化,得到了桨叶夹角的最优解以及相应的测试区域的电场标准偏差值.研究表明,桨叶夹角处于最优配置时,测试区域各轴向电场标准偏差较初始状态分别下降了23.5%,28.8%,73.0%,总标准偏差下降了44.1%,说明通过优化改善了测试区域的场均匀性,提高了混响室用于电磁兼容测试时的准确度.In order to improve the field uniformity in the work space of a reverberation chamber,the simulation model was constructed and analyzed with FEKO based on moments method（MOM）.By taking the field deviation of every axis and whole-deviation for objectives,the method of combining genetic algorithm（GA） with moment method was used to analyze and optimize the reverberation chamber.By using this method,the effect of the angle between the oars on the field uniformity in the work space was investigated.The optimal angles,the standard deviation of the electric field in a reverberation chamber were all obtained.Compared with initial standard deviation,the optimal results showed that the standard deviation of the electric field of every axis decreased by 23.5%,28.8%,73.0%,and the whole standard deviation decreased by 44.1%,the field uniformity was improved in the work space of a reverberation chamber by optimization,and the accuracy of electromagnetic compatibility（EMC） testing in a chamber was improved.

关 键 词：混响室 搅拌器 桨叶夹角 遗传算法 场均匀性 

分 类 号：TN011[电子电信—物理电子学] O441[理学—电磁学]