耦合方式与初始条件结构对分数阶双稳态振子环形网络同步的影响

在由分数阶双稳态振子通过最近邻耦合构成的环形网络中研究了振子的同步与耦合方式以及初始条件结构的关系.通过选择初始条件结构、耦合方式和强度,可以控制网络呈现振幅死亡同步态、振幅死亡非同步态、混沌同步态和混沌非同步态等多种动力学行为.参数平面区域ε3-ε2内的最大条件Lyapunov指数和最大Lyapunov指数的等高线进一步表明,y与z方向的耦合竞争对网络的动力学行为的影响结果敏感地依赖于网络的初始条件结构.

Effect of coupling modes and initial structures on the synchronization of a ring network with fractional order bistable oscillators

A ring network with fractional-order bistable oscillators is proposed, and the relationship between synchronization and parameters, such as coupling modes and the initial structural conditions, etc., is investigated. Based on the bistable characteristics of P-R oscillator, the effects of the coupling strength and the structures in initial conditions on the dynamic behaviors of the ring network are investigated by analyzing the largest conditional Lyapunov exponents, the largest Lyapunov exponents and the bifurcation diagrams, etc. Further investigation reveals that the ring network can be controlled to form chaotic synchronization, chaotic non-synchronization, synchronous amplitude death, synchronous non-amplitude death, etc. by changing the initial conditions and the coupling strength. Furthermore, the contours of the largest conditional Lyapunov exponents and the largest Lyapunov exponents also show how the dynamic behaviors of the network are influenced by the competition between couplings along directions of y and z, strongly relies on the initial structural conditions of network.
Keywords：initial conditionsamplitude deathbistable states