Modelling and experimental characterization of an energy harvester with bi-stable compliance characteristics
Modelling and experimental characterization of an energy harvester with bi-stable compliance characteristics
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DOI：
10.1177/0959651811403093
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发表时间：
2011-06-01
影响因子：
1.6
通讯作者：
Barton, D. A. W.
中科院分区：
文献类型：
--
作者：
Cammarano, A.;Burrow, S. G.;Barton, D. A. W.
本文提出了一种新型的振动能量采集器的设计。该设计使用高磁导率磁性材料，这带来了两个关键优势。首先，它在机械域和电学域之间提供强耦合，从而实现有效的能量转换。第二，它使器件具有双稳态顺应特性，这使采集器具有宽带频率响应。一个显式的分析模型，开发使用的实验数据和有限元建模相结合，以准确地将磁力。然后，使用实验台的动态测试的模型进行了验证。的双稳态振荡器的动态响应的主要特点是突出和讨论的能量收集的背景下的好处。最后，评论之间的关系的复杂的行为所产生的双稳态顺应性的特性和增加电耦合的好处。
This paper presents a novel design for a vibrational energy harvester. The design uses high permeability magnetic materials which brings about two key advantages. First, it gives strong coupling between the mechanical and electrical domains, thus enabling effective energy conversion. Second, it gives the device a bi-stable compliance characteristic, which gives the harvester a broad-band frequency response. An explicit analytical model is developed using a combination of experimental data and finite element modelling in order to accurately incorporate the magnetic forces. The model is then validated using dynamic tests of the experimental rig. The main features of the dynamic response of the bi-stable oscillator are highlighted and benefits discussed in the context of energy harvesting. Finally, comments are made on the relationship between the complicated behaviour resulting from the bi-stable compliance characteristic and the benefits of increased electrical coupling.