一种宽频压电能量收集装置的建模与实验研究  

Modeling and experiment of a piezoelectric energy harvester with wide operation bandwidth

作　　者：刘少刚[1] 程千驹 赵丹[1] 冯立锋 

机构地区：[1]哈尔滨工程大学机电工程学院,哈尔滨150001

出　　处：《振动与冲击》2016年第24期27-32,50,共7页Journal of Vibration and Shock

基　　金：国防技术基础科研基金资助项目(Z192013B001)

摘　　要：为拓宽振动压电能量收集装置工作频带宽度,提出一种新型两自由度分段线性能量收集结构,同时为便于未来对该装置进一步的关键参数优化与微小型设计,提出该结构的理论模型并给出解析解结果,通过对实验样机加工与实验平台搭建得到所提出装置发电性能实验结果。对比理论值与实验值表明,所提出装置在第一共振区间与第二共振区间的工作频带宽度分别为2.2 Hz与4.5 Hz,总频带宽度达到6.7 Hz,与相对应两自由度线性系统比较,其拓宽效果达到4.78倍。在误差允许范围内,装置发电性能解析解结果与实验值基本保持一致,所提出装置能够有效拓宽发电工作频带宽度。A novel two-degree-of-freedom piecewise-linear piezoelectric energy harvester was proposed to achieve wide operation frequency bandwidth. The theoretical model was established and the analytical solutions were obtained for further optimized design and microminiaturization fabricating of the proposed device. Through the prototype fabricating and the experiment platform building,the experiment results were obtained. The analytical results and experiment results show that the operation frequency bandwidths of the proposed device in the first resonance region and in the second resonance region were 2. 2 Hz and 4. 5 Hz,respectively. The total bandwidth is 6. 7 Hz,which reaches as 4. 78 times as the corresponding linear system. Within the margin of error,the analytical solutions are close to the experiment results,and the proposed device can extend the bandwidth of the operation frequency efficiently.

关 键 词：分段线性 两自由度 拓宽频带 压电 能量收集 

分 类 号：TB123[理学—工程力学] TN384[理学—力学]