Method for Constructing Periodic Solutions of Nonlinear Differential Equations

Pub Date : 2024-09-11 DOI:10.1134/s0012266124050021
V. M. Budanov
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Abstract

We justify an analytical method for constructing periodic solutions of nonlinear systems of ordinary differential equations of polynomial type. Periodic solutions are constructed in the form of Fourier series in which the coefficients are polynomials depending on a parameter, which is not assumed to be small. Two examples are considered: the van der Pol equation and the Lorenz system.

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构建非线性微分方程周期解的方法
摘要 我们论证了一种构建多项式类型非线性常微分方程系统周期解的分析方法。周期解是以傅里叶级数的形式构造的,其中的系数是取决于一个参数的多项式,而这个参数并不假定很小。我们考虑了两个例子:范德尔波尔方程和洛伦兹系统。
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