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    New technique to quantify chaotic dynamics based on differences between semi-implicit integration schemes

    Butusov, Denis N. and Pesterev, Dmitriy O. and Tutueva, Aleksandra V. and Kaplun, Dmitry I. and Nepomuceno, Erivelton (2021) New technique to quantify chaotic dynamics based on differences between semi-implicit integration schemes. Communications in Nonlinear Science and Numerical Simulation, 92. p. 105467. ISSN 10075704

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    Many novel chaotic systems have recently been identified and numerically studied. Parametric chaotic sets are a valuable tool for determining and classifying oscillation regimes observed in nonlinear systems. Thus, efficient algorithms for the construction of parametric chaotic sets are of interest. This paper discusses the performance of algorithms used for plotting parametric chaotic sets, considering the chaotic Rossler, Newton-Leipnik and Marioka-Shimizu systems as examples. In this study, we compared four different approaches: calculation of largest Lyapunov exponents, statistical analysis of bifurcation diagrams, recurrence plots estimation and introduced the new analysis method based on differences between a couple of numerical models obtained by semi-implicit methods. The proposed technique allows one to distinguish the chaotic and periodic motion in nonlinear systems and does not require any additional procedures such as solutions normalization or the choice of initial divergence value which is certainly its advantage. We evaluated the performance of the algorithms with the two-stage approach. At the first stage, the required simulation time was estimated using the perceptual hash calculation. At the second stage, we examined the performance of the algorithms for plotting parametric chaotic sets with various resolutions. We explicitly demonstrated that the proposed algorithm has the best performance among all considered methods. Its implementation in the simulation and analysis software can speed up the calculations when obtaining high-resolution multi-parametric chaotic sets for complex nonlinear systems.

    Item Type: Article
    Keywords: Chaos; Numerical simulation; Semi-implicit integration; Dynamical analysis; The largest Lyapunov exponent; Bifurcation analysis; Recurrence plot; Parametric chaotic set;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 16818
    Identification Number:
    Depositing User: Erivelton Nepomuceno
    Date Deposited: 09 Jan 2023 12:58
    Journal or Publication Title: Communications in Nonlinear Science and Numerical Simulation
    Publisher: Elsevier
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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