耦合电磁干扰问题的最小二乘方法

针对电磁部件本身的互耦干扰和外部放射源产生的耦合干扰,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解决敏感电气元件的电磁兼容问题,设计全局稳定的预测算法,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.

Least Squares Method of Coupling Electromagnetic Inference

The main purpose of this paper is to develop a numerical optimization algorithm that takes account of mutual coupling among inner elements and interactions with outside scatterers. To achieve this, a modified linear least squares method (LSM) is developed. The novel LSM combined with moments-based scheme is applied to optimize the radiation pattern of arbitrary arrays in the operational environment, and represses the array gain and phase tracking error caused by electromagnetic compatibility based constraints. This leads to a simple control structure and enhances the robustness of the electrical system. The reasonability and validity is verified by the experimental results based on dSPACE.