论文标题
旋转摆链中的同步结构
Synchronization structures in the chain of rotating pendulums
论文作者
论文摘要
耦合非线性振荡器合奏的集体行为是现代非线性动力学中最有趣,最重要的问题之一。在本文中,我们在局部耦合的相同的摆型元素链中研究旋转动力学,特别是时空结构,这些元素描述了相锁环系统的行为,分布式的Josephson连接,耦合电气机等。考虑到链中的控制参数是:分散的强度,coupling和coupling强度和数量。在正在考虑的系统中,实现的模式在频率上是同步的,并且同步(相位)或异步(异步)相相。在低耗散情况下,理论上发现了同相同步旋转状态不稳定性区域边界,并确定导致其稳定性丧失的分叉。对任意长度的链进行了分析。揭示了各种相位外同步旋转模式类型的存在:相位在相和群集内同步方案中完全异步。建立了从一种类型的离子同步模式到另一种类型的过渡的规律。已经发现,在某些耦合参数值下,可以使用稳定的同相和异相同步模式的共存。已经发现,对于任意的链长,可能的稳定相位模式的数量始终比链元素编号少一个。分析结果通过数值模拟证实。
The collective behavior of the ensembles of coupled nonlinear oscillator is one of the most interesting and important problems in modern nonlinear dynamics. In this paper, we study rotational dynamics, in particular space-time structures, in locally coupled identical pendulum-type elements chains that describe the behavior of phase-locked-loop systems, distributed Josephson junctions, coupled electrical machines, etc. The control parameters in the considered chains are: dissipation, coupling strength, and number of elements. In the system under consideration, the realized modes are synchronous in frequency and synchronous (in-phase) or asynchronous (out-of-phase) in phase. In the low dissipation case, the in-phase synchronous rotational regime instability region boundaries are theoretically found and the bifurcations leading to the loss of its stability are determined. The analysis was carried out for chains of arbitrary length. The existence of various out-of-phase synchronous rotational modes types is revealed: completely asynchronous in phases and the cluster in-phase synchronization regime. Regularities of transitions from one type of out-of-phase synchronous mode to another are established. It was found that at certain coupling parameter values, the coexistence of stable in-phase and out-of-phase synchronous modes is possible. It was found that for arbitrary chain length, the number of possible stable out-of-phase modes is always one less than the chain elements number. Analytical results are confirmed by numerical simulations.