The resonance behavior in the fractional harmonic oscillator with time delay and fluctuating mass
The resonance behavior in the fractional harmonic oscillator with time delay and fluctuating mass
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具有时滞和脉动质量的分数阶谐振子的谐振行为
DOI:
10.1016/j.physa.2019.123731
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发表时间:
2020-05
期刊:
影响因子:
--
通讯作者:
H. Eugene Stanley
中科院分区:
文献类型:
--
作者:
Tian Yan;Yu Tao;He Guitian;Zhong Linfeng;H. Eugene Stanley
We study stochastic resonance (SR) in a fractional harmonic oscillator with time delay and mass fluctuation. Using a moment equation, we derive the exact analytical expression of the output amplitude and find that fluctuations in the output amplitude are nonmonotonic. Using numerical simulations we verify the accuracy of the analytical result. We find (i) that the evolution of output amplitude versus the frequency of the external periodic force exhibits One-Peak SR and Two-Peaks SR, resonance region and resonance form largely depend on the noise correlation rate and noise intensity, (ii) that the evolution of output amplitude versus the noise intensity exhibits One-Peak SR and the increasing time delay lower the critical driving frequency, and (iii) that the evolution of output amplitude versus feedback gain performs diverse resonance forms, the increasing time delay widens the region for occurrence of SR and diversifies the resonance form.
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