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arXiv 2102.02522eess.SYcs.SYmath.DS
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Koopman算子动力学模型:学习、分析与控制

Koopman Operator Dynamical Models: Learning, Analysis and Control

Petar Bevanda, Stefan Sosnowski, Sandra Hirche

摘要:

Koopman算子允许通过(全局)线性表示来处理非线性系统。一般来说,算子是无限维的,需要有限的近似,没有总体框架。虽然有原则的方法来学习这种有限近似,他们在许多情况下被忽视的青睐,往往不适定和非结构化的方法。此外,库普曼算子理论与已知的系统理论和动力系统概念有着长期的联系,这些概念并没有得到普遍的认可。鉴于前者和后者的现实,这项工作的目的是弥合各种概念之间的差距,无论是理论和易于处理的实现。首先,我们回顾了Koopman算子动力学模型的数据驱动表示(非结构化和结构化),对各种现有方法进行了分类,并突出了它们的差异。此外,我们提供了简明的洞察范式的关系,系统理论的概念和分析的前景,使用范式建模控制系统。此外,我们概述了目前的挑战和评论未来的前景。

英文摘要:

The Koopman operator allows for handling nonlinear systems through a (globally) linear representation. In general, the operator is infinite-dimensional - necessitating finite approximations - for which there is no overarching framework. Although there are principled ways of learning such finite approximations, they are in many instances overlooked in favor of, often ill-posed and unstructured methods. Also, Koopman operator theory has long-standing connections to known system-theoretic and dynamical system notions that are not universally recognized. Given the former and latter realities, this work aims to bridge the gap between various concepts regarding both theory and tractable realizations. Firstly, we review data-driven representations (both unstructured and structured) for Koopman operator dynamical models, categorizing various existing methodologies and highlighting their differences. Furthermore, we provide concise insight into the paradigm's relation to system-theoretic notions and analyze the prospect of using the paradigm for modeling control systems. Additionally, we outline the current challenges and comment on future perspectives.

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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