附加液体质量的压电俘能器俘能特性研究
Study on Energy Harvesting Characteristics of Piezoelectric Energy Harvester with Additional Liquid Mass
胡帅钊 1聂国才 1张忠伟 1邵明玉 1马驰骋1
作者信息
- 1. 山东理工大学 交通与车辆工程学院,山东 淄博 255049
- 折叠
摘要
压电俘能器能将振动能转化为电能,为低功耗的电子设备供电.为了拓宽压电俘能器的有效频率带宽、降低系统的谐振频率,提出一种附加液体质量的压电俘能器.以压电效应为指导,建立压电俘能器的力学模型和机电耦合模型,分析附加液体质量的压电俘能器的动力学特性,并基于理论模型、仿真分析及试验验证3方面展开研究.通过制作实物样机,搭建振动实验平台,对压电俘能器的俘能特性进行了实验测试.实验结果表明,与传统式悬臂梁式压电俘能器相比,该结构5种模式下压电俘能器的谐振频率降低,输出电压增加.利用AC-DC整流滤波电路对压电俘能器产生的电能进行整流滤波,验证了压电俘能器产生电能的可用性.
Abstract
The piezoelectric energy harvesters can convert the vibration energy into the electric energy and supply power for the low-power electronic equipment.In order to broaden the effective frequency band width of the piezoe-lectric energy harvester and reduce the resonant frequency of the system,a piezoelectric energy harvester with addi-tional liguid mass is proposed in this paper.Guided by the piezoelectric effect,the mechanical model and electrome-chanical coupling model of piezoelectric energy harvester are established,and the dynamic characteristics of piezoe-lectric energy harvester with additional liquid mass are analyzed,and the study is carried out based on the theoretical model,simulation analysis and experimental verification.By making a prototype and building a vibration experiment platform,the energy harvesting characteristics of piezoelectric energy harvester are tested experimentally,The ex-perimental results show that compared with the traditional cantilever piezoelectric energy harvester,the resonant freguency of the piezoeleetric energy harvester with five modes of the structure is signilicantly reduced,and the out-put voltage is increased.The AC-DC rectifier filter circuit is used to rectify and filter the electricity generated by the piezoelectric energy harvester,and the availability of the electric energy generated by the piezoelectric energy har-vester is verified.
关键词
俘能器/试验测试/液体质量/谐振频率/低频Key words
energy harvester:experimental testing/quality of liguid/resonant frequency/low frequency引用本文复制引用
基金项目
国家自然科学基金资助项目(11702162)
国家自然科学基金资助项目(11902182)
山东省自然科学基金面上资助项目(ZR2020MA057)
淄博市校城融合基金资助项目(2019ZBXC288)
出版年
2024
NETL
NSTL
万方数据