多方式宽频复合能量采集器  

Multi-mode broadband composite energy harvester

作　　者：刘俊杰 喻涛涛 潘卫强 周零志 陈万通 宋芳[2] LIU Junjie;YU Taotao;PAN Weiqiang;ZHOU Lingzhi;CHEN Wantong;SONG Fang(College of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Engineering Training Center,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620 [2]上海工程技术大学工程训练中心,上海201620

出　　处：《传感器与微系统》2025年第1期119-122,126,共5页Transducer and Microsystem Technologies

摘　　要：针对传统压电悬臂梁能量采集器采集方式单一、采集频率范围小、效率低的问题,设计了一种包含杠杆位移放大、压电双晶梁能量采集、电磁能量采集的复合式能量采集器。建立了该能量采集器的理论模型,制作了实验样机,研究了该复合能量采集器分别在单次按压、循环按压、不同激振频率条件下的输出特性。结果表明:该能量采集器可在超低频工作,具有更宽的采集频带,验证了压电电磁复合结构的合理性。单次按压条件下,产生的瞬时峰值电压为-37.6 V;2 Hz循环按压条件下,产生的均方根电压为:16.7 V;激振频率为15 Hz时有最大均方根电压为38.1 V,外接电阻最佳阻值7 kΩ时最大功率为19.36 mW。Aiming at the problems of traditional piezoelectric cantilever beam energy harvester of single acquisition mode,small acquisition frequency range and low efficiency,a composite energy harvester containing lever displacement amplification,piezoelectric bicrystal beam energy harvesting and electromagnetic energy harvesting is designed.The theoretical model of the energy harvester is established,an experimental prototype is fabricated,and the output characteristics of the composite energy harvester are studied under the conditions of single press,cyclic press and different excitation frequencies,respectively.The results show that the energy harvester can operate at ultra-low frequencies and has a wider acquisition frequency band,which verifies the rationality of the piezoelectric electromagnetic composite structure.The instantaneous peak voltage generated under single press condition is-37.6 V;the root mean square voltage generated under 2 Hz cyclic press condition is 16.7 V;the maximum root mean square voltage is 38.1 V at 15 Hz excitation frequency,and the maximum power is 19.36 mW at the optimum resistance value of 7 kΩof external resistor.

关 键 词：宽频 压电双晶梁 复合能量采集器 杠杆位移放大 

分 类 号：TN384[电子电信—物理电子学]