摘要
压电能量回收装置离不开能量提取电路,传统标准电路的能量提取效率不高,而采用同步切换开关的能量提取电路能有效提高了能量提取效率。该文提出采用粘性材料作为自适应机械开关结构的移动电极,它不需额外的电子器件,且可自适应悬臂梁的位移幅值,获得更高功率。分别采用正弦激励和噪声激励对粘性材料的参数进行了分析。结果表明,激励不同时,粘性材料的参数选择也不同,同时还证明了自适应机械开关的性能。
The piezoelectric energy harvesting device relies on the energy extraction circuit,the energy extraction efficiency of traditional standard circuit is not high,and the synchronous switch circuit can effectively improve the energy extraction efficiency.In this paper,the use of viscous material as the moving electrode of adaptive mechanical switch structure is proposed.It does not require additional electronic devices and can adapt to the displacement amplitude of the cantilever beam to harvest higher power.The sinusoidal excitation and noise excitation are used to analyze the parameters of the viscous material.The results show that when the excitation is different,the parameter selection of the viscous material is also different,which also proves the performance of the adaptive mechanical switch.
作者
黄瑶
秦刚
刘伟群
HUANG Yao;QIN Gang;LIU Weiqun(Mechanical Engineering College,Southwest Jiaotong University,Chengdu 610031,China)
出处
《压电与声光》
CAS
北大核心
2020年第5期704-707,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(51875488,51875488)。
关键词
能量提取电路
粘性材料
自适应机械开关
能量提取效率
参数优化
energy extraction circuit
viscous material
adaptive mechanical switch
energy extraction efficiency
parameter optimization
