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arXiv 2011.11083math.DS
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具有双极限环的二维Hamilton系统的双频拟周期扰动

On two-frequency quasi-periodic perturbations of systems close to two-dimensional Hamiltonian ones with a double limit cycle

O. S. Kostromina

摘要:

研究了当相应的受扰自治系统具有双极限环时,双频拟周期扰动对接近于任意非线性二维Hamilton系统的影响问题.它的解对于非线性振动的同步理论和动力系统的分岔理论都有重要意义。在未扰动系统的固有频率与准周期扰动频率可互换的情况下,发生共振。平均系统的推导,使人们有可能确定的结构的共振区,也就是说,描述的行为的解决方案在附近的个人共振水平。这些系统的研究允许确定可能的分叉时产生的共振水平偏离未扰动系统的水平,这会产生一个双极限环在扰动自治系统。将所得理论结果应用于研究一个双频拟周期扰动的双曲型方程,并通过数值计算加以说明。

英文摘要:

The problem of the effect of two-frequency quasi-periodic perturbations on systems close to arbitrary nonlinear two-dimensional Hamiltonian ones is studied in the case when the corresponding perturbed autonomous systems have a double limit cycle. Its solution is important both for the theory of synchronization of nonlinear oscillations and for the theory of bifurcations of dynamical systems. In the case of commensurability of the natural frequency of the unperturbed system with frequencies of quasi-periodic perturbation, resonance occurs. Averaged systems are derived that make it possible to ascertain the structure of the resonance zone, that is, to describe the behavior of solutions in the neighborhood of individual resonance levels. The study of these systems allows determining possible bifurcations arising when the resonance level deviates from the level of the unperturbed system, which generates a double limit cycle in a perturbed autonomous system. The theoretical results obtained are applied in the study of a two-frequency quasi-periodic perturbed pendulum-type equation and are illustrated by numerical computations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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