...模态级数法；展望 [gap=1110]Key words：power system；angle stability；voltage stability；relationship；modal series method；prospect 中图分类号： TM71 文献标识码：A 文章编号： 1674-3415(2012)12-0041-08 ..
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Currently, the Normal Form theory and the Modal Series method in vector fields are the basic tools to study the dynamic characteristic of nonlinear power systems.
目前,研究这类非线性的理论依据主要有正规形理论和模态级数法。
参考来源 - 电力系统低频振荡非线性模态分析方法及分析软件开发·2,447,543篇论文数据，部分数据来源于NoteExpress
Based on the theory of modal superposition and power series expansion, a modal superposition method for the sensitivity analysis of FRF is proposed in this paper.
基于模态展开和幂级数展开原理，提出了一种频响函数灵敏度分析的模态展开法。
By simulating the track irregularities with trigonometric series method, the train-bridge coupling vibration equations are established based on the combined modal of train formation and the bridge.
利用三角级数法模拟了轨道的不平顺，采用列车编组和桥梁组合的模型，建立了车桥耦合振动方程。
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