Hopf Bifurcations of a Stochastic Fractional-Order Van der Pol System

Hopf Bifurcations of a Stochastic Fractional-Order Van der Pol System
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随机分数阶 Van der Pol 系统的 Hopf 分岔

DOI:
10.1155/2014/835482
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发表时间:
2014-06
影响因子:
--
通讯作者:
Yang Lixin
Yang Lixin
中科院分区:
--
文献类型:
--
作者:
Liu Xiaojun;Hong Ling;Yang Lixin

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研究了具有随机参数的分数阶货车der Pol(VDP)系统的Hopf分支.首先,将Chebyshev多项式逼近应用于随机分数阶系统的研究。该方法将随机系统等效化为确定性系统,然后用数值方法求解随机系统的响应。然后,根据Hopf分岔的存在条件,通过理论分析得到了分岔的临界参数值。最后,通过数值仿真验证了理论分析的正确性.
The Hopf bifurcation of a fractional-order Van der Pol (VDP for short) system with a random parameter is investigated. Firstly, the Chebyshev polynomial approximation is applied to study the stochastic fractional-order system. Based on the method, the stochastic system is reduced to the equivalent deterministic one, and then the responses of the stochastic system can be obtained by numerical methods. Then, according to the existence conditions of Hopf bifurcation, the critical parameter value of the bifurcation is obtained by theoretical analysis. Then, numerical simulations are carried out to verify the theoretical results.
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