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Lyapunov Stability Analysis of a String Equation Coupled With an Ordinary Differential System

机译:带有常微分系统的弦方程的Lyapunov稳定性分析

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摘要

This paper considers the stability problem of a linear time invariant system in feedback with a string equation. A new Lyapunov functional is proposed using augmented states that enriches and encompasses the classical functionals of the literature. It results in tractable stability conditions expressed in terms of linear matrix inequalities. This methodology follows from the application of the Bessel inequality to the projections over the Legendre polynomials. Numerical examples illustrate the potential of our approach through three scenario: a stable ODE perturbed by the PDE, an unstable open-loop ODE, and an unstable closed-loop ODE stabilized by the PDE.
机译:本文考虑了线性时不变系统在带弦方程反馈中的稳定性问题。提出了一种新的Lyapunov函数,它使用了增强的状态来丰富并包含文献的经典功能。它导致以线性矩阵不等式表示的易处理的稳定性条件。这种方法是根据将贝塞尔不等式应用于勒让德多项式的投影而得出的。数值示例通过三种情况说明了我们的方法的潜力:受PDE干扰的稳定ODE,不稳定的开环ODE和受PDE稳定的不稳定闭环ODE。

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