Approximating Periodic Solutions of Autonomous Delay Differential Equations

Published

November 30, 2006

Author(s)

David E. Gilsinn

Abstract

Machine tool chatter has been characterized as isolated periodic solutions or limit cycles of delay differential equations. Determining the amplitude and frequency of the limit cycle is sometimes crucial to understanding and controlling the stability of machining operations. In Gilsinn [9] a result was proven that says that, given an approximate periodic solution and frequency of an autonomous delay differential equation that satisfies a certain non-criticality condition, there is an exact periodic solution and frequency in a computable neighborhood of the approximate solution and frequency. The proof required the estimation of a number of parameters and the verification of three inequalities. In this paper the details of the algorithms will be given for estimating the parameters required to verify the inequalities and to compute the final approximation errors. An application will be given to a Van der Pol oscillator with delay in the nonlinear terms. A MATLAB m-file implementing the algorithms discussed in the paper is given in the appendix.

Citation

NIST Interagency/Internal Report (NISTIR) - 7375

Report Number

7375

NIST Pub Series

NIST Interagency/Internal Report (NISTIR)

Pub Type

NIST Pubs

Download Paper

https://doi.org/10.6028/NIST.IR.7375

Keywords

delay differential equations, error bounds' Fredholm alternative, monodromy operator, periodic solutions, Van der Pol equation

Citation

Gilsinn, D. (2006), Approximating Periodic Solutions of Autonomous Delay Differential Equations, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.7375 (Accessed October 13, 2024)