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JOURNALS // Vestnik Samarskogo Universiteta. Estestvenno-Nauchnaya Seriya // Archive

Vestnik SamU. Estestvenno-Nauchnaya Ser., 2019 Volume 25, Issue 1, Pages 97–103 (Mi vsgu591)

Mathematical Modelling

The predictor-corrector method for modelling of nonlinear oscillators

V. V. Zaytseva, E. Yu. Fedyuninb

a Samara National Research University, 34, Moskovskoye shosse, Samara, 443086, Russian Federation
b Joint Stock Company Space Rocket Centre Progress, 18, Zemetsa street, Samara, 443009, Russian Federation

Abstract: In the work physically reasonable algorithm of numerical modeling of nonlinear oscillatory and self-oscillatory systems are offered. The algorithm is based on discrete in time model of the linear oscillator. Nonlinearity is considered by the introduction to the oscillator of additional communications by the structural analysis of an initial system. For approximation of a temporary derivative in nonlinear communications it is offered to use the scheme of the prediction and correction. In spite of the fact that theoretically the algorithm has the second order of accuracy, within the numerical experiment with Van der Pol oscillator it shows better results, than a standard method of the second order — the Heun’s method.

Keywords: oscillatory and self-oscillatory systems, nonlinearity, finite difference scheme, prediction and correction, spectrum of self-oscillations.

UDC: 519.622

Received: 23.12.2018
Accepted: 18.01.2019

DOI: 10.18287/2541-7525-2019-25-1-97-103



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