Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous Noise
Stochastic resonance (SR) and stochastic multiresonance (SMR) phenomena as a function of the underdamping and overdamping coefficients in bistable system with asymmetric dichotomous noise are investigated numerically. By the efficient numerical simulation of the asymmetric dichotomous noise and the...
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Wiley
2014-01-01
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| Series: | Discrete Dynamics in Nature and Society |
| Online Access: | http://dx.doi.org/10.1155/2014/850361 |
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| author | Juan Wu Yong Xu |
| author_facet | Juan Wu Yong Xu |
| author_sort | Juan Wu |
| collection | DOAJ |
| description | Stochastic resonance (SR) and stochastic multiresonance (SMR) phenomena as a function of the underdamping and overdamping coefficients in bistable system with asymmetric dichotomous noise are investigated numerically. By the efficient numerical simulation of the asymmetric dichotomous noise and the fourth-order Runge-Kutta algorithm, we calculate the system responses, the averaged power spectrum, and the signal-noise-ratio (SNR) that can be a measure of the existence of SR and SMR phenomenon. And the effects of damping coefficients on the three characteristics are analyzed. Firstly, it is found that the periodic asymmetric distribution of the particle’s hopping between two potential wells in the system response is gradually weakened as underdamping coefficient is increased to overdamping coefficient. And it also displays the periodic asymmetric distribution under the circumstance of overdamping coefficient. Then the averaged power spectrum exhibits multiple sharp peaks, and the highest peak increases and decreases for underdamping coefficient which is added to overdamping coefficient. Finally, SNR versus the damping coefficient for the system parameters and the noise parameters are acquired and they show multiple peaks and valleys, which illustrates the obvious SMR phenomena in bistable system with asymmetric dichotomous noise. |
| format | Article |
| id | doaj-art-df1985d36f3a4e758460b0d87f2d0f43 |
| institution | DOAJ |
| issn | 1026-0226 1607-887X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Discrete Dynamics in Nature and Society |
| spelling | doaj-art-df1985d36f3a4e758460b0d87f2d0f432025-08-20T03:21:05ZengWileyDiscrete Dynamics in Nature and Society1026-02261607-887X2014-01-01201410.1155/2014/850361850361Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous NoiseJuan Wu0Yong Xu1School of Mathematics & Information Science, Beifang University for Nationalities, Yinchuan 750021, ChinaDepartment of Applied Mathematics, Northwestern Polytechnical University, Xi’an 710072, ChinaStochastic resonance (SR) and stochastic multiresonance (SMR) phenomena as a function of the underdamping and overdamping coefficients in bistable system with asymmetric dichotomous noise are investigated numerically. By the efficient numerical simulation of the asymmetric dichotomous noise and the fourth-order Runge-Kutta algorithm, we calculate the system responses, the averaged power spectrum, and the signal-noise-ratio (SNR) that can be a measure of the existence of SR and SMR phenomenon. And the effects of damping coefficients on the three characteristics are analyzed. Firstly, it is found that the periodic asymmetric distribution of the particle’s hopping between two potential wells in the system response is gradually weakened as underdamping coefficient is increased to overdamping coefficient. And it also displays the periodic asymmetric distribution under the circumstance of overdamping coefficient. Then the averaged power spectrum exhibits multiple sharp peaks, and the highest peak increases and decreases for underdamping coefficient which is added to overdamping coefficient. Finally, SNR versus the damping coefficient for the system parameters and the noise parameters are acquired and they show multiple peaks and valleys, which illustrates the obvious SMR phenomena in bistable system with asymmetric dichotomous noise.http://dx.doi.org/10.1155/2014/850361 |
| spellingShingle | Juan Wu Yong Xu Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous Noise Discrete Dynamics in Nature and Society |
| title | Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous Noise |
| title_full | Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous Noise |
| title_fullStr | Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous Noise |
| title_full_unstemmed | Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous Noise |
| title_short | Damping Coefficient Induces Stochastic Multiresonance in Bistable System with Asymmetric Dichotomous Noise |
| title_sort | damping coefficient induces stochastic multiresonance in bistable system with asymmetric dichotomous noise |
| url | http://dx.doi.org/10.1155/2014/850361 |
| work_keys_str_mv | AT juanwu dampingcoefficientinducesstochasticmultiresonanceinbistablesystemwithasymmetricdichotomousnoise AT yongxu dampingcoefficientinducesstochasticmultiresonanceinbistablesystemwithasymmetricdichotomousnoise |