Bursting mechanism in a time-delayed oscillator with slowly varying external forcing

Bursting mechanism in a time-delayed oscillator with slowly varying external forcing
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具有缓慢变化的外力的时滞振荡器的爆发机制

DOI:
10.1016/j.cnsns.2013.08.010
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发表时间:
2014-04
期刊:
Communications in Nonlinear Science & Numerical Simulation
影响因子:
--
通讯作者:
Bi, Qinsheng
Bi, Qinsheng
中科院分区:
其他
文献类型:
--
作者:
Yu, Yue;Tang, Hongji;Han, Xiujing;Bi, Qinsheng

文献摘要

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本文研究了具有时滞反馈的Duffing振子中复杂爆发模式的产生。当周期强迫变化缓慢时,我们给出了对称的折叠-折叠爆发和对称的Hopf-Hopf爆发。分析了系统在时滞反馈和周期强迫作用下的分岔和动力学行为。我们计算了系统的折叠分支和Hopf分支的条件,以及与外部强迫和时滞相关的稳定性。我们还确定了两个制度的突发依赖于延迟本身的大小和时间延迟耦合的强度模型。结果表明,时滞系统中的突发事件的动力学行为与无时滞系统中的突发事件的动力学行为有很大的不同。特别地,延迟可以用作调谐参数以调制对应于不同类型的突发的动态。此外,我们使用转换相空间分析来探索延迟爆发行为的演化细节。最后通过数值模拟验证了本文研究的有效性.
This paper investigates the generation of complex bursting patterns in the Duffing oscillator with time-delayed feedback. We present the bursting patterns, including symmetric fold–fold bursting and symmetric Hopf–Hopf bursting when periodic forcing changes slowly. We make an analysis of the system bifurcations and dynamics as a function of the delayed feedback and the periodic forcing. We calculate the conditions of fold bifurcation and Hopf bifurcation as well as its stability related to external forcing and delay. We also identify two regimes of bursting depending on the magnitude of the delay itself and the strength of time delayed coupling in the model. Our results show that the dynamics of bursters in delayed system are quite different from those in systems without any delay. In particular, delay can be used as a tuning parameter to modulate dynamics of bursting corresponding to the different type. Furthermore, we use transformed phase space analysis to explore the evolution details of the delayed bursting behavior. Also some numerical simulations are included to illustrate the validity of our study.
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