Open AccessWork done by a periodical external force on an overdamped harmonic oscillator with frequency fluctuation and energetic stochastic resonance
Author(s) -
Liangying Zhang,
Cao Li,
Di Wu
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.190502
Subject(s) - stochastic resonance , physics , asymmetry , harmonic oscillator , harmonic , noise (video) , multiplicative function , work (physics) , resonance (particle physics) , sign (mathematics) , multiplicative noise , statistical physics , monotonic function , quantum electrodynamics , condensed matter physics , quantum mechanics , mathematical analysis , mathematics , signal transfer function , digital signal processing , artificial intelligence , computer science , electrical engineering , image (mathematics) , engineering , analog signal
Characterization of the work done by a periodic external force on an overdamped harmonic oscillator with frequency fluctuation is studied. Results indicate that the instantaneous power with periodic variations of time shows asymmetry. It is also revealed that the work done by a periodic external force on the system in one period with the variation of multiplicative noise intensity exhibits non-monotonic behavior. Whether the system shows the coexistence of energetic stochastic resonance and suppression or not is determined by the sign of the correlation coefficient between the multiplicative noise and the additive noise.