电子设备电磁敏感性仿真分析及优化设计方法  

Simulation Analysis and Optimization for the Electromagnetic Susceptibility of Electronic Devices

作　　者：张爱民[1] 张蕾[1] 张杭[2] 陈德桂[2] 

机构地区：[1]西安交通大学电子与信息工程学院,西安710049 [2]西安交通大学电气工程学院,西安710049

出　　处：《西安交通大学学报》2010年第8期5-9,共5页Journal of Xi'an Jiaotong University

摘　　要：提出了将高频电磁干扰环境中的电子设备作为整体来进行电磁敏感性仿真分析和优化设计的总体思路和分析方法.对于外部区域,改进已有的电磁散射的数值计算方法,在机壳表面采用四边形的片元模型代替已有算法中的三角形片元模型,重新定义电子设备外部区域面上的基函数,并根据机壳表面的对称关系对算法进行优化,减少了外部感应电流的运算时间.对于内部区域,利用基于微粒群优化算法的递归动态神经网络建立电子设备内部电路对于干扰的高频仿真模型,提出对于内部电路参数进行优化设计的方法.所建立的神经网络模型解决了以往电子设备在电磁敏感性仿真分析和优化设计过程中,仿真模型存在的计算量和存储量大的问题.优化设计方法改变了以往寻优过程中穷尽式搜索的方式.The overall thought and methodology of the simulation analysis and optimization for the electromagnetic susceptibility（EMS）of electronic devices in the industrial environment are proposed on account of high frequency electromagnetic interference.The existing numerical calculation method in electromagnetic scattering for external subdomains is modified,where the calculation time for external induced currents is reduced by replacing the original planar triangular surface patch modeling with the quadrilateral surface patch modeling on the enclosure surface.The basis functions on the external subdomain surface of electronic devices are redefined,and the algorithm is optimized based on symmetrical relation of the enclosure surface.For the internal subdomain,the dynamic recurrent neural network based on particle swarm optimization algorithm is employed to establish a high frequency simulation model of the interference for the internal circuit of electronic device.An optimization method for parameters of internal circuits is given based on the model.The problem of huge amount of calculations and storages in existing simulation models of EMS is avoided by the proposed neural model,and the conventional exhaustive search during optimization process is changed by the proposed optimization method.

关 键 词：电子设备 高频电磁干扰 基函数 神经网络 优化设计 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置] TN70[自动化与计算机技术—控制科学与工程]