蒲公英状压电振动能量收集装置宽频带设计

发布时间：2018-08-20 17:59

【摘要】：研究了蒲公英状压电振动能量收集装置的宽频带设计,以解决环境振源振动频率多变的问题。建立了蒲公英状压电振动能量收集装置谐振频率的理论模型并进行了数值模拟,结果表明,该能量收集装置的谐振频率并不是可以任意拓展的。为验证理论分析的正确性,进行了蒲公英状压电振动能量收集装置的频率响应实验,得到的实验结果与理论分析基本吻合,说明了本文理论分析的可靠性。最后对宽频带的蒲公英状压电振动能量收集装置进行了发电性能测试实验,结果表明,通过对蒲公英状压电振动能量收集装置的宽频带设计,其在20～34Hz有较大的功率输出,且最大输出功率达到了约2.3mW。本文的设计有效地拓宽了该装置的谐振频率范围,易于实现与环境振源的匹配而获得较高的能量收集能力。
[Abstract]:The wide band design of dandelion piezoelectric vibration energy collection device is studied in order to solve the problem of variable vibration frequency of environmental vibration source. The theoretical model of resonant frequency of dandelion piezoelectric vibration energy collection device is established and numerical simulation is carried out. The results show that the resonant frequency of the energy collection device can not be expanded arbitrarily. In order to verify the correctness of the theoretical analysis, the frequency response experiment of the dandelion piezoelectric vibration energy collection device is carried out. The experimental results are in good agreement with the theoretical analysis, which shows the reliability of the theoretical analysis in this paper. Finally, the power generation performance of the dandelion piezoelectric vibration energy collection device is tested. The results show that the dandelion piezoelectric vibration energy collection device has a large power output in 20~34Hz by the broadband design of the dandelion piezoelectric vibration energy collection device. The maximum output power is about 2.3 MW. The design of this paper effectively broadens the resonance frequency range of the device, and it is easy to match with the ambient vibration source to obtain higher energy collection ability.
【作者单位】：金陵科技学院机电工程学院;南京航空航天大学机械结构力学及控制国家重点实验室;淮阴工学院机械工程学院;
【基金】：国家自然科学基金资助项目(No.51305183) 江苏省“青蓝工程”资助项目金陵科技学院博士科研启动基金资助项目(No.jit-b-201412)
【分类号】：TM619

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