Modeling, characterization and fabrication of vibration energy harvester using Terfenol-D/PZT/Terfenol-D composite transducer
Modeling, characterization and fabrication of vibration energy harvester using Terfenol-D/PZT/Terfenol-D composite transducer
复制标题
使用 Terfenol-D/PZT/Terfenol-D 复合传感器的振动能量收集器的建模、表征和制造
DOI：
10.1016/j.sna.2009.10.002
复制
发表时间：
2009-12-01
影响因子：
4.6
通讯作者：
Zhang, Gaoyong
中科院分区：
文献类型：
--
作者：
Dai, Xianzhi;Wen, Yumei;Zhang, Gaoyong
振动能量采集作为一种为无线传感器和低功率设备供电的手段，已经引起了人们的极大兴趣。介绍了一种利用Terfenol-D/PZT/Terfenol-D层状磁电(ME)换能器将环境机械振动转换为电能的能量采集器。该收割机使用四个磁铁布置在悬臂梁的自由端。磁体在气隙中产生集中的磁通梯度，ME换能器放置在磁体之间的气隙中。当收割机被激励时，磁路相对于ME换能器移动。ME换能器经历磁场变化并产生功率输出。建立了分析该收割机非线性振动和电输出特性的分析模型。制作了样机并进行了测试。实验结果与分析结果吻合较好。该样机在51赫兹的共振频率下产生了2.11 mW的功率，加速度为1g。(C)2009爱思唯尔B.V.保留所有权利。
Vibration energy harvesting has been receiving a considerable amount of interest as a means of powering wireless sensors and low-power devices. In this paper, an energy harvester is presented to convert ambient mechanical vibration into electrical energy employing the Terfenol-D/PZT/Terfenol-D laminate magnetoelectric (ME) transducer. The harvester uses four magnets arranged on the free end of a cantilever beam. The magnets produce a concentrated flux gradient in the air gap, and the ME transducer is placed in the air gap between the magnets. When the harvester is excited, the magnetic circuit moves relative to the ME transducer. The ME transducer undergoes magnetic field variations and produces a power output. An analytical model is developed to analyze the nonlinear vibration and electrical-output performances of the harvester. A prototype is fabricated and tested. The experimental results are in agreement with the analytical results. The prototype produces a power of 2.11 mW for an acceleration of 1 g at resonant frequency of 51 Hz. (C) 2009 Elsevier B.V. All rights reserved.