# Representation and Stability Analysis of PDE-ODE Coupled Systems

Das, A and Shivakumar, S and Weiland, S and Peet, M Representation and Stability Analysis of PDE-ODE Coupled Systems. (Unpublished)

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## Abstract

In this work, we present a scalable Linear Matrix Inequality (LMI) based framework to verify the stability of a set of linear Partial Differential Equations (PDEs) in one spatial dimension coupled with a set of Ordinary Differential Equations (ODEs) via input-output based interconnection. Our approach extends the newly developed state space representation and stability analysis of coupled PDEs that allows parametrizing the Lyapunov function on $L_2$ with multipliers and integral operators using polynomial kernels of semi-separable class. In particular, under arbitrary well-posed boundary conditions, we define the linear operator inequalities on $\mathbb{R}^n \times L_2$ and cast the stability condition as a feasibility problem constrained by LMIs. In this framework, no discretization or approximation is required to verify the stability conditions of PDE-ODE coupled systems. The developed algorithm has been implemented in MATLAB where the stability of example PDE-ODE coupled systems are verified.

Item Type: Article math.OC math.OC UNSPECIFIED Div F > Control Cron Job 15 Oct 2020 03:36 15 Dec 2020 02:08