Auxetic Power Amplification Mechanism for Low Frequency Vibration Energy Harvesting

在过去的十年里，能量收集已经成为世界范围内一个爆炸性的研究领域，因为它有望开发出包括无线传感器网络在内的自供电系统。在过去的几年里，几个专门的世界级研究小组、专门的国际会议出现了紧急情况，包括英国在内的政府研究资助机构和行业利益相关者进行了大量投资。然而，到目前为止，仍有几个关键障碍阻碍了这项技术的实际应用。例如，目前，大多数基于振动的能量收集器被设计为工作在共振频率或接近共振频率。不幸的是，在大多数实际情况下，环境振动远低于共振频率和频率变化，或者在很大范围的频率范围内完全随机。在谐振频率之外，收获的能量显著减少。这些问题的解决带来了科学挑战，需要高度创新的解决方案。这个EPSRC资助的博士生将通过研究宽带低频振动能量采集来应对这一挑战，通过一些创新方法，如频率上转换和新颖的能量收集器设计。该项目的研究成果将使工业能够将开发的新型能量收集器用于自给动力系统，如结构健康监测应用。

In the last decade, energy harvesting has been an exploding research field in the worldwide by promising of self-powered systems, including wireless sensor networks. The last few years have seen the emergency of several dedicated world class research groups, dedicated international conferences, heavily investments by government research funding bodies, including the UK, and industrial stakeholders. Nevertheless, several critical roadblocks remain that have so far prevented the technology from practical applications. For example, currently, most vibration-based energy harvesters are designed to work at or near resonance frequency. Unfortunately, in the most majority of practical scenarios, ambient vibration is well below the resonant frequency and frequency-varying or totally random over a wide range frequency. The energy harvested reduces significantly outside the resonant frequency. The resolution of these presents scientific challenges, requiring highly innovative solutions.This EPSRC funded PhD studentship will address this challenge by researching into broadband vibration energy harvesting for low frequencies via a number of innovative approaches, such as frequency-up conversion and novel energy harvester designs. The research outcome of the project will be able for industry to use the developed novel energy harvester for self-powered systems, such as structural health monitoring applications.