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arXiv 1908.02233math.DScs.LG
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具有控制的动态系统的Koopman表示

Koopman Representations of Dynamic Systems with Control

Pacific Northwest National Laboratory(太平洋西北国家实验室)

Craig Bakker, Steven Rosenthal, Kathleen E. Nowak

摘要:

动力系统的最优控制策略的设计和分析由于状态变量的非线性相关性而变得复杂。Koopman算子已经被用来简化动力系统的分析,通过将系统的流映射到动态是线性的(并且可能是无限的)的可观测空间上。本文研究受控动力系统的一致Koopman表示。我们介绍了Koopman表示的动态一致性的概念,并分析了几个现有的和建议的表示派生的动力系统,可观的,和Koopman运营商的必要约束。我们的主要结果是一个混合制定独立和联合观察的状态和控制输入。这种提法承认一个相对较大的空间的动力系统相比,早期的配方,同时保持独立的状态和控制输入的Koopman运营商。更一般地说,这项工作提供了一个分析框架,以评估和排名建议的简化控制动力系统的一般Koopman表示。

英文摘要:

The design and analysis of optimal control policies for dynamical systems can be complicated by nonlinear dependence in the state variables. Koopman operators have been used to simplify the analysis of dynamical systems by mapping the flow of the system onto a space of observables where the dynamics are linear (and possibly infinte). This paper focuses on the development of consistent Koopman representations for controlled dynamical system. We introduce the concept of dynamical consistency for Koopman representations and analyze several existing and proposed representations deriving necessary constraints on the dynamical system, observables, and Koopman operators. Our main result is a hybrid formulation which independently and jointly observes the state and control inputs. This formulation admits a relatively large space of dynamical systems compared to earlier formulations while keeping the Koopman operator independent of the state and control inputs. More generally, this work provides an analysis framework to evaluate and rank proposed simplifications to the general Koopman representation for controlled dynamical systems.

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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