Validation of a flexible causality treatment for transient analysis of nonlinearly loaded structures
Validation of a flexible causality treatment for transient analysis of nonlinearly loaded structures
复制标题
非线性加载结构瞬态分析的灵活因果关系处理的验证
DOI：
10.1109/isemc.2015.7256210
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
C. Schuster
中科院分区：
文献类型：
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作者：
Cheng Yang;H. Bruns;Peiguo Liu;C. Schuster
本文研究了集总单元作用下分布三维结构的瞬态分析。重点介绍了利用带限频率响应的电磁/电路联合仿真。首先，通过模拟或测量，在感兴趣的光谱范围内研究被动结构。然后，从截断的频谱中提取因果脉冲响应。对于因果校正，我们提出了一种灵活的处理方法，即使用指数函数进行谱外推。最后，通过将因果脉冲响应合并到EM/电路仿真中来验证该方法。采用基于因果卷积方法的时间推进方法对单个和多个非线性加载实例进行了分析。计算结果与实测结果和商用仿真结果吻合较好。
In this paper we study the transient analysis of distributed three dimensional structures loaded by lumped elements. Emphasis is put on the combined electromagnetic (EM)/circuit simulation by making use of band-limited frequency responses. First passive structures are investigated within the spectrum of interest, either by simulation or measurements. Then, causal impulse responses are extracted from the truncated spectrum. For the causality correction, we present a flexible treatment by using exponential functions for the spectrum extrapolation. Finally, the approach is verified by incorporating the causal impulse responses into an EM/circuit simulation. Single and multiple nonlinearly loaded examples are analyzed by means of a time marching procedure based on the causal convolution approach. The results show a good agreement with measurements and the results provided by commercial simulators.