噪声与振动控制2024，Vol.44Issue(2)：27-31,5.DOI:10.3969/j.issn.1006-1355.2024.02.005
多方向振动能量收集装置输出特性分析
Output Characteristic Analysis of Multi-directional Vibration Energy Harvester
摘要
Abstract
Output characteristics of a piezoelectric vibration energy harvester are studied to realize the collection of vibration energy in multiple directions and broad frequency ranges.Firstly,the differential equation of the one-dimensional model of a piezoelectric cantilever beam is established,and the responses of the cantilever beam subjected to external excitation are obtained and analyzed.Then,a finite element model of the vibration energy harvester consisting of multiple piezoelectric cantilever beams is established by means of COMSOL,and the modals,output voltage and output power of the harvester are obtained and analyzed.The results show that the harvester can generate high voltage and power under the excitation in any different directions.Furthermore,the broadband output characteristics of the harvester under the excitation in different directions are discussed.The results show that there are multiple resonant peaks with similar amplitudes in the frequency range of 200-400 Hz..关键词
振动与波/振动能量收集装置/多方向激励/模态分析/输出特性分析/宽频特性Key words
vibration and wave/vibration energy harvester/excitations in multi-directional/modal analysis/output characteristic analysis/broadband characteristics分类
数理科学引用本文复制引用
王伟杰,谢坤,刘博胤,董万静..多方向振动能量收集装置输出特性分析[J].噪声与振动控制,2024,44(2):27-31,5.基金项目
国家自然科学基金资助项目(51909098) （51909098）
