Enhancement of stochastic resonance by noise delay

✍ Scribed by Zhonghuai Hou; Houwen Xin

• Book ID: 104337909
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 98 KB
• Volume: 263
• Category: Article
• ISSN: 0375-9601
• DOI: 10.1016/s0375-9601(99)00748-3

✦ Synopsis

Noise induced coherent oscillations NICO are investigated near a Hopf bifurcation point in the NO q CO catalytic reaction system, while the control parameter is perturbed by Gaussian noise, each random number of which has a duration time t . With the variation of the noise intensity, the NICO-strength shows a maximum characteristic of the occurrence of Ž . stochastic resonance SR . It's rather interesting that when t increases for constant noise intensity, the NICO-strength goes Ž . Ž . through multi-maxima at t , n q 1 r2T n is an positive integer and T the period of of the NICO , indicating the n 0 0 possibility to enhance the strength of SR by suitable duration of noise. In addition, the maximum values at t decays n w Ž . exponentially as exp y t y T r2 rg with g , 3.65.