摘要
针对现有机理建模算法普遍存在计算电磁脉冲过于复杂的问题,探索基于实验统计的电磁脉冲响应预测新方法,使用开关电源进行雷击浪涌注入实验,并记录不同注入电压下的输入输出数据。依据系统辨识理论选用ARX模型对开关电源进行建模,并利用最小二乘算法对模型参数进行辨识。通过所建模型预测不同幅值浪涌激励的响应并与实验结果对比,发现该模型能准确预测脉冲响应,验证了系统辨识建模的有效性,并且计算过程得到简化,为电磁防护工程应用提供新的参考方法。
The ubiquity problems that the process computing electromagnetic pulse response by the existing mechanism modeling algorithms is too complex.In order to study the new methods of predicting electromagnetic pulse response based on experiment data,the switch voltage power is used to carry on the lightning surge experiment,recording the input and output data of different amplitude lightning voltage.The model of the switch voltage power is built by ARX model based on least square algorithm estimating its parameters.Comparing the predicting response of different amplitude lightning surge voltages with the experiment results,it discovers that the model can predict the response pulse correctly and approve the effective of system identification modeling,simplify computing process,and it offers a reference method for electromagnetic protection engineering application.
出处
《国外电子测量技术》
2011年第9期36-39,共4页
Foreign Electronic Measurement Technology
关键词
电磁脉冲
雷击浪涌
系统辨识
ARX模型
最小二乘算法
electromagnetic pulse
lightning surge
system identification
ARX model
least square algorithm
