GES under point-wise dissipation for time-delay systems

Let f0f_0 be the vector field of the autonomous time-delay system, Lipschitz on bounded sets, with f0(0)=0f_0(0)=0. Let V:XnR0V:\mathcal X^n\to\mathbb R_{\geq0} be a Lyapunov–Krasovskii functional (LKF), and let a,a,a>0\underline a,\overline a,a>0 satisfy, for every ϕXn\phi\in\mathcal X^n,

aϕ(0)2V(ϕ)aϕ2,\underline a|\phi(0)|^2\leq V(\phi)\leq\overline a\|\phi\|^2, D+V(ϕ,f0(ϕ))aϕ(0)2.D^+V(\phi,f_0(\phi))\leq-a|\phi(0)|^2.

GES under point-wise dissipation conjecture. Under these assumptions, the system is GES. The converse is known from the cited theorem, so the conjecture would characterize GES through point-wise dissipation without the additional growth-rate assumption currently required; its resolution is not supplied.

Sources & referencesView supporting material

Primary source

Antoine Chaillet, Iasson Karafyllis, Pierdomenico Pepe and Yuan Wang, “The ISS framework for time-delay systems: a survey”, arXiv:2206.06167 (2022).

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