C-Papers


论文题名
宽带压电振动能量收集器结构设计与实验验证
Title
Design and experiment of wideband piezoelectric vibration energy harvester
作者
邓志强;王翔;郑政;李春来;李欢;伞海生
Institution
[邓志强] 厦门大学萨本栋微米纳米科学技术研究院;[王翔] 厦门大学萨本栋微米纳米科学技术研究院;[伞海生] 厦门大学萨本栋微米纳米科学技术研究院;[郑政] 厦门大学航空航天学院;[李春来] 深圳光启高等理工研究院;[李欢] 深圳光启高等理工研究院
期刊名称
浙江大学学报. 工学版
CN
ISSN
1008-973X
出版日期
2017-11-01
Volume
51
Issue
11
YM
2287-2291
GJZ
振动能量收集; 压电; 可调谐带宽和频率; 非线性效应
Keywords
vibration energy harvesting; piezoelectric; tunable frequency and; wideband; nonlinear stiffness
LWZY
为了收集环境中随机振动的能量,提出谐振频率和带宽皆可调的压电振动能量收集方法.通过调节止挡块的高度,振动能量收集器可以达到自由、碰撞和预紧3种工; 作状态.根据3种工作状态,建立振动数学模型,利用有限元和MATLAB软件仿真振动能量收集器的输出性能.加工L型四悬臂结构的大尺寸原理样机,在1g; 激励加速度下,测试自由、碰撞和预紧3种结构下的电压输出与频率的关系.实验结果与建模仿真结果表明,碰撞振动模式比自由和预紧模式有更好的能量收集效果; ,结构的非线性刚度对能量收集器的谐振频率和带宽有显著影响.
Abstract
A piezoelectric vibration energy harvesting method with tunable; frequency and wideband was proposed in order to harvest the energy of; random vibration from ambient.The vibration energy harvester (VEH)can; work at free,impact,and preload vibration mode by adjusting the height; of mechanical stopper,respectively.The mathematical model was; established corresponding to the three work modes of the VEH.The output; characteristics of VEH was simulated using finite element analysis; software and MATLAB.Large size of prototype with four L-shape; cantilevers was fabricated through experiments.The relationships between; voltage output and frequency were measured under free,impact,and preload; work modes,respectively,with external excitation of a=1.0g.Experimental; results and modeling results show that the impact mode has better energy; harvesting effect than the free and preload mode.The nonlinear stiffness; of the structure has a significant effect on the resonant frequency and; bandwidth of VEH.
Ref
Fund_Code
国家自然科学基金资助项目; 福建省科技计划资助项目
FileName
10.3785/j.issn.1008-973X.2017.11.024

Back to List