Delayed feedback as a means of control of noise-induced motion

Details Delayed feedback as a means of control of noise-induced motion Delayed feedback as a means of control of noise-induced motion

2003-09-09

arxiv.org/abs/cond-mat/0309226v2

Phys. Rev. Lett. 93, 010601 (2004)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures. In the replacement file Fig. 2 and Fig. 4(b),(d) were amended. The reason is numerical error found, that a

Scientific paper

10.1103/PhysRevLett.93.010601

Time--delayed feedback is exploited for controlling noise--induced motion in coherence resonance oscillators. Namely, under the proper choice of time delay, one can either increase or decrease the regularity of motion. It is shown that in an excitable system, delayed feedback can stabilize the frequency of oscillations against variation of noise strength. Also, for fixed noise intensity, the phenomenon of entrainment of the basic oscillation period by the delayed feedback occurs. This allows one to steer the timescales of noise-induced motion by changing the time delay.

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