复杂环境电磁干扰的解耦控制方法研究  

Study of decoupling control method for complex environmental electromagnetic inference

作　　者：薛花[1] 王育飞[1] 

机构地区：[1]上海电力学院电力工程系,上海200090

出　　处：《电机与控制学报》2013年第7期76-80,86,共6页Electric Machines and Control

基　　金：国家自然科学基金(51007053);上海市教育委员会科研创新项目(12YZ136);上海高校选拔培养优秀青年教师科研专项基金(sdl10022);上海市重点科技攻关计划项目(10110502100;11510500800);上海市教委重点学科建设项目(J51303)

摘　　要：针对非线性电磁干扰的分析与预测精度不高的问题,结合最小二乘模式综合策略,提出一种任意阵列散射干扰的精确计算与优化设计方法。针对电磁部件本身的互耦干扰和部件外部放射源产生的耦合干扰,基于极值分解,采用改进的最小均方二乘方法,应用模式综合策略,与矩量法相结合,实现近距干扰时变情形下被测信号幅值、相位的精确计算,有效抑制由非线性耦合干扰引起的检测误差。该方法从数值分析角度,设计了全局稳定的预测算法,解决了敏感电气元件的电磁兼容问题,能量耦合小于-100dBm,具有形式简单、计算精确、存储量小、鲁棒性好的特点。基于dSPACE的实验结果证明了该方法的正确性和有效性。Aiming at inaccurary in analysis and prediction of nonlinear electromagnetic interference, combined with least squares synthesis techniques, a numerical optimization algorithm that takes account of mutual coupling among inner elements and interactions with outside scatterers was proposed. To achieve this, a modified linear least squares method （LLM） based on polar decomposition was developed. The no- vel LLM combined with moments-based scheme was applied to optimize the radiation pattern of arbitrary arrays in the operational environment, and repress the array gain and phase tracking error caused by elec- tromagnetic compatibility based constraints. This leads to a simple control structure, energy coupling less than-lOOdBm and enhances the robustness of the electrical system. The reasonability and validity is testified by the experimental results based on dSPACE.

关 键 词：极值分解 最小二乘法 电磁兼容 模式综合 能量耦合 

分 类 号：TN82[电子电信—信息与通信工程]