Determination of the area of exponential attraction in one-dimensional finite-time systems using meshless collocation

Giesl, Peter and McMichen, James (2018) Determination of the area of exponential attraction in one-dimensional finite-time systems using meshless collocation. Discrete and Continuous Dynamical Systems - Series B. ISSN 1531-3492

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Abstract

We consider a non-autonomous ordinary differential equation over a finite time interval [T1; T2]. The area of exponential attraction consists of solutions such that the distance to adjacent solutions exponentially contracts from T1 to T2. One can use a contraction metric to determine an area of exponential attraction and to provide a bound on the rate of attraction. In this paper, we will give the first method to algorithmically construct a contraction metric for finite-time systems in one spatial dimension. We will show the existence of a contraction metric, given by a function which satisfies a second-order partial differential equation with boundary conditions. We then use meshless collocation to approximately solve this equation, and show that the resulting approximation itself defines a contraction metric, if the collocation points are sufficiently dense. We give error estimates and apply the method to an example.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QA Mathematics
Depositing User: Billy Wichaidit
Date Deposited: 15 Nov 2017 10:11
Last Modified: 16 Apr 2018 08:44
URI: http://sro.sussex.ac.uk/id/eprint/71249

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