Delay control of coherence resonance in type-I excitable dynamics

被引：27

作者：

Aust, R. ^{[1
]}

Hoevel, P. ^{[1
]}

Hizanidis, J. ^{[1
,2
]}

Schoell, E. ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Theoret Phys, D-10623 Berlin, Germany

[2] Univ Athens, Dept Informat & Telecommun, Opt Commun Lab, Athens 15784, Greece

来源：

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS | 2010年 / 187卷 / 01期

关键词：

NOISE-INDUCED OSCILLATIONS; FEEDBACK-CONTROL; SYSTEMS; BIFURCATION; SPIKING; LASERS;

D O I：

10.1140/epjst/e2010-01272-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider a simple paradigmatic system of type-I excitability subject to noise and time-delayed feedback. This system is governed by a global bifurcation, namely a saddle-node bifurcation on a limit cycle. In the absence of noise, delay can induce complex dynamics including multiple stable and unstable periodic orbits. Random fluctuations result in coherence resonance in dependence on the noise strength. We show that this effect can be enhanced by delayed feedback control with suitably chosen feedback strength and time delay.

引用

页码：77 / 85

页数：9

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