Design of piezoelectric energy harvesting devices subjected to broadband random vibrations by applying topology optimization
Design of piezoelectric energy harvesting devices subjected to broadband random vibrations by applying topology optimization
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DOI：
10.1007/s10409-011-0491-3
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发表时间：
2011-09
影响因子：
3.5
通讯作者：
Zheqi Lin;H. Gea;Shutian Liu
中科院分区：
文献类型：
--
作者：
Zheqi Lin;H. Gea;Shutian Liu
在过去的几年里，利用压电能量收集器将环境振动能转化为电能引起了人们的广泛兴趣。本文采用基于拓扑优化的方法来同时确定压电能量收集装置的最佳布局和质量加载的最佳位置。目标函数是在一定振动频率范围内最大化能量收集性能。采用伪激励法（PEM）分析结构平稳随机响应，然后利用伴随法进行灵敏度分析。数值例子证明了所提出方法的有效性。
Converting ambient vibration energy into electrical energy by using piezoelectric energy harvester has attracted a lot of interest in the past few years. In this paper, a topology optimization based method is applied to simultaneously determine the optimal layout of the piezoelectric energy harvesting devices and the optimal position of the mass loading. The objective function is to maximize the energy harvesting performance over a range of vibration frequencies. Pseudo excitation method (PEM) is adopted to analyze structural stationary random responses, and sensitivity analysis is then performed by using the adjoint method. Numerical examples are presented to demonstrate the validity of the proposed approach.