摘要
为了研究涡激振动压电能量收集特性,根据压电理论和尾流振子模型建立二维涡激振动的压电能量收集数学模型,对一个圆柱加双压电臂的能量收集装置进行计算分析。结果表明:输出电压随着负载电阻的增大而增大,最大输出功率存在一个最佳匹配电阻。之后开展压电能量收集风洞实验,理论分析结果与实验结果吻合,验证了理论模型的正确性。该模型对进一步设计和优化涡激振动能量收集装置有参考价值。
In order to study vortex-induced vibration of piezoelectric energy harvesting characteristics,a two-dimensional mathematical model about piezoelectric energy harvesting was established based on the theory of piezoelectric and wake oscillator model. An energy harvesting device of a cylinder with double piezoelectric cantilever beam was calculated and analyzed.The results show that the output voltage increases with the increase of load resistance. The maximum output power has an optimum matching resistance. Then the wind tunnel experiment of piezoelectric energy harvesting was conducted. It is demonstrated that the experimental results are consistent with the calculation results and the correctness of the proposed theoretical model is verified. The proposed model provides reference to further design and optimization of vortex-induced vibration energy harvesting system.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2017年第9期104-107,共4页
Journal of Chongqing Jiaotong University(Natural Science)
基金
福建省科技厅重点资助项目(2014H0010)
关键词
机电工程
能量收集
尾流振子模型
VIV
圆柱
electromechanical engineering
energy harvesting
wake oscillator model
vortex-induced vibration
cylinder
