Modelling and analysis of a novel E-shape piezoelectric vibration energy harvester with dynamic magnifier

被引：6
作者：
Cao, Yongyong [1 ]
Zheng, Yuqiao [1 ]
Mei, Xutao [2 ]
Dong, Fugang [1 ]
Xu, Rong [1 ]
Shi, Chenglong [1 ]
Zhang, Pengcheng [1 ]
Wei, Kongyuan [1 ]
Li, Yabing [3 ]
机构：
[1] Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Peoples R China
[2] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan
[3] Lanzhou Univ Technol, Sch Econ & Management, Lanzhou 730050, Peoples R China
来源：
MECHANICS RESEARCH COMMUNICATIONS | 2024年 / 137卷
关键词：
Piezoelectric energy harvesting; Dynamic magnifier; Dynamic model; Novel E -shape; Low -frequency environment; LOW-FREQUENCY; PARAMETER; DRIVEN; IMPACT; MEMS;
D O I：
10.1016/j.mechrescom.2024.104257
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
An important issue in conventional harvesters is that the output performance is limited to small strains and narrow bandwidth. To address these issues, a novel E -shape harvester with dynamic magnifier is devised to magnify the base vibration and enhance electric energy in low -frequency complicated environment. In this study, a novel electromechanical coupling dynamic model is established by considering the characteristics of the Eshape structure. Meanwhile, the analytical expressions of the eigenfunction and resonance frequency of the developed model are presented. The effect of system parameters on the power output are investigated and discussed. Results indicate that the electric energy can be significantly enhanced and the vibration amplitude can be magnified using properly design structural parameters. The proposed harvester with dynamic magnifier is a simple and effective approach for enhancing energy harvesting near a target operating frequency.
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页数：8
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