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arXiv 1809.04833nlin.AOcond-mat.dis-nnnlin.CD
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非自主驱动诱导全同振子网络的稳定性

Nonautonomous driving induces stability in network of identical oscillators

Maxime Lucas, Duccio Fanelli, Aneta Stefanovska

摘要:

非自主驱动的振荡器已被证明扩大阿诺德舌头在参数空间,但鲜为人知的是类似的效果,一个网络的振荡器。为了检验这一假设,即确定性非自治扰动是一个很好的候选人稳定复杂的动态,我们考虑一个网络的同相振荡器驱动的振荡器具有缓慢的时变频率。我们调查这一非自治系统的同步解决方案的短期和长期稳定性。对于有吸引力的耦合,我们表明,该区域的稳定增长的幅度的频率调制的增加,通过一个间歇性的同步制度的诞生。对于排斥耦合,我们提出了一种控制策略,通过稍微改变网络拓扑结构来稳定动态。我们还展示了如何在不改变拓扑结构的情况下,驱动频率的时变性本身可以稳定动态。作为分析的副产品,我们观察到类似嵌合体的状态。我们的结论是,时间变异性引起的稳定性现象也存在于网络中,加强了这样一种想法,即这是相当现实的情况下,生活系统在面对持续的扰动,以保持其功能。

英文摘要:

Nonautonomous driving of an oscillator has been shown to enlarge the Arnold tongue in parameter space, but little is known about the analogous effect for a network of oscillators. To test the hypothesis that deterministic nonautonomous perturbation is a good candidate for stabilising complex dynamics, we consider a network of identical phase oscillators driven by an oscillator with a slowly time-varying frequency. We investigate both the short- and long-term stability of the synchronous solutions of this nonautonomous system. For attractive couplings we show that the region of stability grows as the amplitude of the frequency modulation is increased, through the birth of an intermittent synchronisation regime. For repulsive couplings, we propose a control strategy to stabilise the dynamics by altering very slightly the network topology. We also show how, without changing the topology, time-variability in the driving frequency can itself stabilise the dynamics. As a by-product of the analysis, we observe chimera-like states. We conclude that time-variability-induced stability phenomena are also present in networks, reinforcing the idea that this is quite realistic scenario for living systems to use in maintaining their functioning in the face of ongoing perturbations.

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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