Enhancing energy harvesting by coupling monostable oscillators

被引：8
|
作者：
Pena Rossello, Julian I. [1 ,2 ]
Wio, Horacio S. [3 ,4 ]
Deza, Roberto R. [1 ,2 ]
Haenggi, Peter [5 ,6 ]
机构：
[1] UNMdP, Inst Invest Fis Mar del Plata IFIMAR, Dean Funes 3350,B7602AYL, Mar Del Plata, Buenos Aires, Argentina
[2] UNMdP, FCEyN, CONICET, Dean Funes 3350,B7602AYL, Mar Del Plata, Buenos Aires, Argentina
[3] UC, Inst Fis Cantabria IFCA, Avda Castros S-N, Santander 39005, Spain
[4] CSIC, Avda Castros S-N, Santander 39005, Spain
[5] Univ Augsburg, Inst Phys, Univ Str 1, D-86135 Augsburg, Germany
[6] Nanosyst Initiat Munich, Schellingstr 4, D-80799 Munich, Germany
来源：
EUROPEAN PHYSICAL JOURNAL B | 2017年 / 90卷 / 02期
关键词：
STOCHASTIC RESONANCE; SPATIOTEMPORAL SYNCHRONIZATION; EQUILIBRIUM; SYSTEMS; NOISE;
D O I：
10.1140/epjb/e2017-70703-x
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The performance of a ring of linearly coupled, monostable nonlinear oscillators is optimized towards its goal of acting as energy harvester - through piezoelectric transduction - of mesoscopic fluctuations, which are modeled as Ornstein-Uhlenbeck noises. For a single oscillator, the maximum output voltage and overall efficiency are attained for a soft piecewise-linear potential (providing a weak attractive constant force) but they are still fairly large for a harmonic potential. When several harmonic springs are linearly and bidirectionally coupled to form a ring, it is found that counter-phase coupling can largely improve the performance while in-phase coupling worsens it. Moreover, it turns out that few (two or three) coupled units perform better than more.
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页数：5
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