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arXiv 2006.14201eess.SYcs.SY
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非线性系统的凸增量耗散性分析——扩展版

Convex Incremental Dissipativity Analysis of Nonlinear Systems - Extended version

Chris Verhoek, Patrick J. W. Koelewijn, Sofie Haesaert, Roland Tóth

AI总结:

针对现有非线性系统耗散性分析仅局限于平衡点附近区域的问题,提出基于矩阵不等式、借助二次存储与供给函数的凸增量耗散性分析方法,关联三类耗散性概念并实现多种性能指标的增量扩展。

摘要:

在实际应用中,可高效计算的非线性系统稳定性与性能分析变得愈发重要。耗散性可统一表征稳定性与性能,但现有结论仅局限于这些非线性系统的平衡点附近区域。基于系统轨迹收敛性的增量框架打破了这一限制。本文研究了增量框架下非线性系统的稳定性与性能刻画如何与耗散性相关联,以及超出$\boldsymbol{\text{ℒ}}_2$-增益概念的通用性能刻画如何在该框架下被理解。本文提出了一种基于矩阵不等式的非线性系统凸增量耗散性分析方法,该方法借助二次存储函数与供给函数实现。所提出的耗散性分析将增量耗散性、微分耗散性与通用耗散性的概念关联起来。研究表明,通过微分耗散性,可保证非线性系统的增量耗散性与通用耗散性。这些结论还实现了非线性系统的$\text{ℒ}_2$-增益、广义$\text{ℋ}_2$-范数、$\text{ℒ}_\text{∞}$-增益以及无源性的增量扩展。

英文摘要:

Efficiently computable stability and performance analysis of nonlinear systems becomes increasingly more important in practical applications. Dissipativity can express stability and performance jointly, but existing results are limited to the regions around the equilibrium points of these nonlinear systems. The incremental framework, based on the convergence of the system trajectories, removes this limitation. We investigate how stability and performance characterizations of nonlinear systems in the incremental framework are linked to dissipativity, and how general performance characterization beyond the $\mathcal{L}_2$-gain concept can be understood in this framework. This paper presents a matrix inequalities-based convex incremental dissipativity analysis for nonlinear systems via quadratic storage and supply functions. The proposed dissipativity analysis links the notions of incremental, differential, and general dissipativity. We show that through differential dissipativity, incremental and general dissipativity of the nonlinear system can be guaranteed. These results also lead to the incremental extensions of the $\mathcal{L}_2$-gain, the generalized $\mathcal{H}_2$-norm, the $\mathcal{L}_\infty$-gain, and passivity of nonlinear 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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