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arXiv 1807.04237eess.SYcs.SY
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非线性共识网络的Koopman性能分析

Koopman Performance Analysis of Nonlinear Consensus Networks

Lehigh University(利哈伊大学)

Hossein K. Mousavi, Christoforos Somarakis, Qiyu Sun, Nader Motee

AI总结:

本文研究了非线性共识网络的性能,利用Koopman算子理论和谱分析方法,通过分解非线性系统来评估其在图拓扑下的性能,并提出了一种可扩展的计算方法来近似Koopman模式分解的组件。

摘要:

动态系统谱分解是一种研究这些系统基本定性与定量性质及其解的流行方法。在本章中,我们考虑了一类非线性合作协议,这些协议由多个通过无向状态依赖图耦合的智能体组成。我们通过Koopman算子理论及其谱分析的思想,开发了一种系统解的表示方法。我们利用最近关于超几何系统中Hartman定理扩展的结果,建立了原始非线性动力学与线性化动力学之间Koopman谱属性的联系。非线性协议输出能量的期望值,与动态网络中的相干性和鲁棒性概念相关,通过Koopman特征值、特征函数和模式进行评估和表征。性能度量的谱表示使我们能够开发算法方法,以评估该类非线性动态网络在图拓扑下的性能。最后,我们提出了一种可扩展的计算方法,用于近似Koopman模式分解的组件,这是评估非线性动态网络系统性能度量所必需的。

英文摘要:

Spectral decomposition of dynamical systems is a popular methodology to investigate the fundamental qualitative and quantitative properties of these systems and their solutions. In this chapter, we consider a class of nonlinear cooperative protocols, which consist of multiple agents that are coupled together via an undirected state-dependent graph. We develop a representation of the system solution by decomposing the nonlinear system utilizing ideas from the Koopman operator theory and its spectral analysis. We use recent results on the extensions of the well-known Hartman theorem for hyperbolic systems to establish a connection between the original nonlinear dynamics and the linearized dynamics in terms of Koopman spectral properties. The expected value of the output energy of the nonlinear protocol, which is related to the notions of coherence and robustness in dynamical networks, is evaluated and characterized in terms of Koopman eigenvalues, eigenfunctions, and modes. Spectral representation of the performance measure enables us to develop algorithmic methods to assess the performance of this class of nonlinear dynamical networks as a function of their graph topology. Finally, we propose a scalable computational method for approximation of the components of the Koopman mode decomposition, which is necessary to evaluate the systemic performance measure of the nonlinear dynamic network.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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