末端质量块对层合悬臂梁d_(15)模式压电俘能器性能的影响  

Effect of the Tip Mass on d_(15) Mode Piezoelectric Energy Harvester with Laminated Cantilever Structure

作　　者：郑学军[1] 梅靖羚 张勇[1] 张智雄[1] 费明祥 

机构地区：[1]湘潭大学材料与光电物理学院,湖南湘潭411005

出　　处：《湘潭大学自然科学学报》2014年第2期21-25,共5页Natural Science Journal of Xiangtan University

基　　金：教育部长江学者和创新团队发展计划(IRT1080);国家自然科学基金项目(51272158);长江学者奖励计划([2009]17);上海市纳米专项(11nm0502600)

摘　　要：设计并制作了末端有质量块和无质量块的层合悬臂梁剪切模式(d15)PZT-51压电俘能器.测量了其在不同负载下峰-峰值电压、输出功率和电流随频率变化曲线,以及负载为RL=1.0MΩ的瞬时电压和振动激励电压与输出峰-峰值电压关系曲线.结果表明,通过末端加质量块可以降低俘能器的共振频率,提高输出电压、功率和电流,从而改善俘能器的性能.随着振动激励电压的增大,悬臂梁压电俘能器的峰-峰值电压也随着增大.所设计的末端质量块层合悬臂梁d15模式PZT-51压电俘能器,有望应用于俘获环境中的低频振动能.The d15 mode PZT-51 laminated cantilever structure piezoelectric energy harvesters （PEHs） with and without a tip mass were fabricated,and the electrical properties at various load resistances,the transient voltage-time curves and the vibration excitation voltage dependence curve of peak-to-peak voltage in RL =1.0 MΩ were measured and compared systematically.The performances of PEHs are improved by adding the tip mass such as low resonant frequency and high output electrical properties,and the peak-to-peak voltage of the PEHs increase with the increasing of vibration excitation voltage.The results indicate that laminated cantilever structure d15 mode PZT-51 PEH with tip mass has potential applications for capturing the low frequency vibrational energy from environment.

关 键 词：d15模式 层合悬臂梁 压电俘能器 峰值电压 

分 类 号：TN384[电子电信—物理电子学] TM282[一般工业技术—材料科学与工程]