Energy harvesting from human motion and bridge vibrations: An evaluation of current nonlinear energy harvesting solutions
Energy harvesting from human motion and bridge vibrations: An evaluation of current nonlinear energy harvesting solutions
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DOI：
10.1177/1045389x12473379
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发表时间：
2013-08-01
影响因子：
2.7
通讯作者：
Sims, Neil D.
中科院分区：
文献类型：
--
作者：
Green, Peter L.;Papatheou, Evangelos;Sims, Neil D.
最近关于从环境振动源获取电能的大量研究都集中在通过故意引入动态非线性来改善器件性能上。除此之外，认识到这些动能来源中的大多数本质上都是随机的，这导致了许多研究集中在能量收集器对随机振动(通常是高斯白噪声)的响应上。这与早期的研究不同，在早期的研究中，假设环境振动源是正弦的。本研究的目的是采用当前的非线性能量收集解，并数值分析其在两种真实环境振源下的有效性：人的行走运动和悬索桥跨中的振动。这项研究表明，通过在能量收集机中引入非线性可以实现的潜在改进对它们所受到的环境激励类型很敏感。此外，还强调了对开发低频能量收割机进行更多研究的必要性。
A large quantity of recent research into the harvesting of electrical energy from ambient vibration sources has been focused on the improvement of device performance via the deliberate introduction of dynamic nonlinearities. In addition to this, the realisation that most of these kinetic energy sources are stochastic in nature has led to many studies focusing on the response of energy harvesters to random vibrations (often Gaussian white noise). This differs from early studies in which it was assumed that ambient vibration sources were sinusoidal. The aim of the present study is to take current nonlinear energy harvesting solutions and to numerically analyse their effectiveness when two real ambient vibration sources are used: human walking motion and the oscillation of the midspan of a suspension bridge. This study shows that the potential improvements that can be realised through the introduction of nonlinearities into energy harvesters are sensitive to the type of ambient excitation to which they are subjected. Additionally, the need for more research into the development of low-frequency energy harvesters is emphasised.