回收环境中的振动能量并转化为电能在近几年受到广泛重视。论文研究了一类回收环境中微振动能量的压电装置,优化设计了分布式压电悬臂梁结构,实验对比分析了不同连接方式、外部激励幅值、频率和集中质量对微振动能量回收效率产生影响。实验结果证实了优化后的分布式能量回收装置提高了宽带低频的现实振动环境中电量收集效率,具有工程应用价值。
In recent years, research on recycling vibration energy from the environment and converting it into electric energy has been widely focused. In this paper, a kind of piezoelectric device which could recycle micro vibration energy from environment has been studied, where a distributed piezoelectric cantilever structure has been designed and optimized. Effects from different connection modes, different amplitude, frequency of external excitation signal and different lumped mass on the energy harvesting efficiency have been tested and analyzed. The experimental results proved that the optimized distributed piezoelectric cantilever structure could effectively improve the energy harvesting efficiency in vibration environment of broadband low frequency, and showed the value of engineering application.