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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1409.6358math.OC
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带控制的动态模态分解

Dynamic mode decomposition with control

Joshua L. Proctor, Steven L. Brunton, J. Nathan Kutz

摘要:

我们开发了一种新的方法,它扩展了动态模式分解(DMD),将控制的效果,以提取低阶模型,从高维,复杂的系统。DMD发现时空相干模式,将局部线性分析与非线性算子理论相结合,并提供与压缩感知兼容的无方程架构。在驱动系统中,DMD不能产生输入输出模型,而且动力学和模态会被外部强迫破坏。我们的新方法,动态模式分解与控制(DMDc),利用DMD的所有优点,并提供了额外的创新,能够消除潜在的动态和驱动的影响之间的歧义,从而产生准确的输入输出模型。该方法是数据驱动的,因为它不需要基本控制方程的知识,只需要来自历史、实验或黑盒模拟的状态和驱动数据的快照。我们证明了高维动力系统的方法,包括一个模型与大规模疫苗接种(驱动)的传染病数据的分析。

英文摘要:

We develop a new method which extends Dynamic Mode Decomposition (DMD) to incorporate the effect of control to extract low-order models from high-dimensional, complex systems. DMD finds spatial-temporal coherent modes, connects local-linear analysis to nonlinear operator theory, and provides an equation-free architecture which is compatible with compressive sensing. In actuated systems, DMD is incapable of producing an input-output model; moreover, the dynamics and the modes will be corrupted by external forcing. Our new method, Dynamic Mode Decomposition with control (DMDc), capitalizes on all of the advantages of DMD and provides the additional innovation of being able to disambiguate between the underlying dynamics and the effects of actuation, resulting in accurate input-output models. The method is data-driven in that it does not require knowledge of the underlying governing equations, only snapshots of state and actuation data from historical, experimental, or black-box simulations. We demonstrate the method on high-dimensional dynamical systems, including a model with relevance to the analysis of infectious disease data with mass vaccination (actuation).

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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