THE COHERENCE RESONANCE IN VAN DER POL SYSTEM INDUCED BY NOISE RECYCLING

被引：4
作者：
Li, X. Y. [1 ]
Yang, J. H. [2 ]
Liu, X. B. [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Peoples R China
[2] China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Peoples R China
来源：
FLUCTUATION AND NOISE LETTERS | 2012年 / 11卷 / 02期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Noise recycling; Van der Pol system; coherence resonance; STOCHASTIC RESONANCE;
D O I：
10.1142/S0219477512500022
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
The phenomenon of coherence resonance (CR) in a delayed noisy Van der Pol system with supercritical Hopf bifurcation, which is influenced by a recycled noise, is numerically studied. Different from the traditional CR theory, in this paper, the characteristics of CR is affected by the time delay in the input noise. Namely, the CR is weakened or enhanced by the time delay feedback. Moreover, we find that several characteristics of this particular system vary periodically and its period has some certain relation with the natural frequency. By using the results given by the paper, we can control the noise-induced motion by modulating the time delay in noise.
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页数：14
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