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arXiv 1007.2804nlin.CD
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时滞系统阵列的全局相位同步

Global phase synchronization in an array of time-delay systems

R. Suresh, D. V. Senthilkumar, M. Lakshmanan, J. Kurths

摘要:

研究了具有复杂拓扑结构的非相位相干混沌吸引子的单向耦合Mackey-Glass时滞系统线性阵列的全局相位同步。特别是,我们表明,在阵列中形成GPS的所有耦合的时间延迟系统的动态组织是通过作为耦合强度的函数的顺序同步来实现的。此外,阵列中相对于主顺序同步集群的异步集群在它们实现与主集群的同步之前组织它们自己以形成集群。我们已经证实了这些结果,通过估计瞬时相位,包括相位差,平均相位,平均频率,频率比和它们的差异,从适当的相位相干吸引子后,使用原始的非相位相干吸引子的非线性变换。结果进一步证实了使用其他两个独立的方法的基础上递归分析和本地化集的概念,从原来的非相位相干吸引子直接没有明确引入的措施的相位。

英文摘要:

We report the identification of global phase synchronization (GPS) in a linear array of unidirectionally coupled Mackey-Glass time-delay systems exhibiting highly non-phase-coherent chaotic attractors with complex topological structure. In particular, we show that the dynamical organization of all the coupled time-delay systems in the array to form GPS is achieved by sequential synchronization as a function of the coupling strength. Further, the asynchronous ones in the array with respect to the main sequentially synchronized cluster organize themselves to form clusters before they achieve synchronization with the main cluster. We have confirmed these results by estimating instantaneous phases including phase difference, average phase, average frequency, frequency ratio and their differences from suitably transformed phase coherent attractors after using a nonlinear transformation of the original non-phase-coherent attractors. The results are further corroborated using two other independent approaches based on recurrence analysis and the concept of localized sets from the original non-phase-coherent attractors directly without explicitly introducing the measure of phase.

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