基于压电振子的振动能量捕获行为研究  

Research on Vibration Energy Harvesting Based on Piezoelectric Cantilever Beams

作　　者：邓冠前[1] 陈仲生[1] 陶利民[1] 张玉光[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《压电与声光》2009年第6期939-942,共4页Piezoelectrics & Acoustooptics

基　　金：武器装备预研基金资助项目;国防基础科研基金资助项目;国家自然科学基金资助项目(50805142)

摘　　要：压电振子是实现振动能量捕获的重要基础,它的结构参数对其发电量和固有频率产生直接影响,需要进行优化设计。该文针对悬臂梁压电振子结构,采用ANSYS有限元建模方法,进行了静力学及模态仿真分析。研究了压电振子的各参数和质量块对其发电量、固有频率的影响规律,设计并搭建了实验台进行实验研究。实验结果验证了仿真分析的正确性,为压电振子的优化设计提供了依据。Piezoelectric cantilever beams is of important basis to vibration energy harvesting and the structure parameters greatly affect its electric output and resonant frequencies,so it is needed to be designed optimally. In this paper,the static and mode analysis of piezoelectric cantilever beams are presented by the finite element analysis method of ANSYS. The effect of the parameters of piezoelectric cantilever beams and the mass block on the electric outputs and the natural resonant frequencies are studied. An experimental set-up is designed and built. The experimental result is qualitatively consistent with that of the simulation. It provides a basis for the optimal designing of piezoelectric cantilever beams.

关 键 词：压电陶瓷 振动能量捕获 悬臂梁 有限元分析 

分 类 号：TN384[电子电信—物理电子学] TH113[机械工程—机械设计及理论]