On the effectiveness of vibration-based energy harvesting
On the effectiveness of vibration-based energy harvesting
复制标题
DOI：
10.1177/1045389x05054042
复制
发表时间：
2005-10-01
影响因子：
2.7
通讯作者：
Roundy, S
中科院分区：
文献类型：
--
作者：
Roundy, S
近年来，基于振动的能量采集的研究有了很大的增长。大多数研究都集中在一种特定的技术上，通常很难比较基于振动的能量收集的截然不同的设计和方法。这项研究的目的是提供一个通用的理论，可用于比较不同的方法和设计的振动为基础的发电机。根据作者测量的一系列常见振动，给出了最大理论功率密度的估计。估计在50-350赫兹的1-10米/S(2)范围内的振动在0.5到100毫瓦/厘米(3)之间。该理论表明，除了输入振动的参数外，功率输出还取决于系统耦合系数、器件的品质因数、发电机的质量密度以及电气负载使功率传输最大化的程度。建立了一个包含所有这些因素的有效性表达式。一般理论应用于电磁、压电、磁致伸缩和静电传感器技术。最后，将一般理论的预测结果与两种压电式振动器设计的实验结果进行了比较。
There has been a significant increase in the research on vibration-based energy harvesting in recent years. Most research is focused on a particular technology, and it is often difficult to compare widely differing designs and approaches to vibration-based energy harvesting. The aim of this study is to provide a general theory that can be used to compare different approaches and designs for vibration-based generators. Estimates of maximum theoretical power density based on a range of commonly occurring vibrations, measured by the author, are presented. Estimates range from 0.5 to 100 mW/cm(3) for vibrations in the range of 1-10 m/s(2) at 50-350 Hz. The theory indicates that, in addition to the parameters of the input vibrations, power output depends on the system coupling coefficient, the quality factor of the device, the mass density of the generator, and the degree to which the electrical load maximizes power transmission. An expression for effectiveness that incorporates all of these factors is developed. The general theory is applied to electromagnetic, piezoelectric, magnetostrictive, and electrostatic transducer technologies. Finally, predictions from the general theory are compared to experimental results from two piezoelectric vibration generator designs.