Bogdanov–Takens bifurcation in an oscillator with negative damping and delayed position feedback

Bogdanov–Takens bifurcation in an oscillator with negative damping and delayed position feedback
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Bogdanov – 在具有负阻尼和延迟位置反馈的振荡器中采取分叉

DOI:
10.1016/j.apm.2013.03.034
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发表时间:
2013-09
影响因子:
5
通讯作者:
Song, Yongli
Song, Yongli
中科院分区:
工程技术2区
文献类型:
--
作者:
Jiang, Jiao;Song, Yongli

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本文研究了具有位置反馈的负阻尼谐振子的Bogdanov-Takens分叉。利用中心流形约化和规范型理论,根据零平衡点时延迟反馈项的二阶和三阶导数,可以完整地计算出Bogdanov-Takens点附近的动力学分类。得到的规范形和数值模拟表明,在具有负阻尼和位置延迟反馈的振子中,存在多稳定、异宿轨道、稳定的双同宿轨道、大幅度周期振荡和亚临界Hopf分叉。结果表明,负阻尼和位置延迟反馈会使系统产生更复杂的动态特性。
In this paper, Bogdanov–Takens bifurcation occurring in an oscillator with negative damping and delayed position feedback is investigated. By using center manifold reduction and normal form theory, dynamical classification near Bogdanov–Takens point can be completely figured out in terms of the second and third derivatives of delayed feedback term evaluated at the zero equilibrium. The obtained normal form and numerical simulations show that multistability, heteroclinic orbits, stable double homoclinic orbits, large amplitude periodic oscillation, and subcritical Hopf bifurcation occur in an oscillator with negative damping and delayed position feedback. The results indicate that negative damping and delayed position feedback can make the system produce more complicated dynamics.
DOI: 10.1115/1.3624967
发表时间: 1966-03
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