万向型压电换能器发电性能理论分析与实验  

Power Generation Performance Theoretical Analysis and Experiment of Universal Piezoelectric Transducer

作　　者：刘祥建[1] 陈仁文[2] LIU Xiang-jian;CHEN Ren-wen(School of Mechanical and Electrical Engineering,Jinling Institute of Technology,Jiangsu Nanjing 211169,China;State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astro-nautics,Jiangsu Nanjing 210016,China)

机构地区：[1]金陵科技学院机电工程学院,江苏南京211169 [2]南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京210016

出　　处：《机械设计与制造》2021年第10期38-41,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51675265,51305183)。

摘　　要：为实现对不同方向振动源振动能量的收集,对一种万向型压电换能器的发电性能进行了理论分析与实验测试。理论分析表明,万向型压电换能器的发电性能受到压电梁夹角的影响,在其多方向发电能力方面,随着外界激励方向的变化,产生的电能呈波浪起伏状变化,换能器对不同方向振动源的激励具有较好的适应性。进一步的实验测试验证了万向型压电换能器的多方向发电能力,且在压电梁夹角为π/2时,最大输出功率达到约1.3 mW,最小输出功率约为0.6 mW。With the aim to harvest vibration energy of vibration sources with different vibration directions,the power generation performance of a universal piezoelectric transducer was studied.The theoretical study shows that the power generation performance of the universal piezoelectric transducer will be influenced by the piezoelectric beam angle change.Moreover,in terms of the multidirectional power generation performance of the universal piezoelectric transducer,the electric energy generated by the transducer will be different when the external excitation direction changes.The experimental study shows that the maximum output power of the universal piezoelectric transducer reaches about 1.3 mW and the minimum output power is about 0.6 mW when the piezoelectric beam angle isπ/2.The results show that the universal piezoelectric transducer can generate higher power in different excitation directions and has better adaptability to the excitation of vibration sources in different directions.

关 键 词：万向 压电换能器 发电性能 压电梁 振动 输出功率 

分 类 号：TN384[电子电信—物理电子学] TH113[机械工程—机械设计及理论]