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首页> 外文会议>Sensors and systems for reliability, safety and affordability >A PIEZOELECTRIC MULTILAYER-STACK ENERGY HARVESTER WITH FORCE AMPLIFICATION FOR DAMAGE DETECTION SENSORS
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A PIEZOELECTRIC MULTILAYER-STACK ENERGY HARVESTER WITH FORCE AMPLIFICATION FOR DAMAGE DETECTION SENSORS

机译：具有损伤检测传感器力放大功能的压电多层能量收集器

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摘要

A piezoelectric lead zirconate titanate (PZT) multilayer-stack flextensional energy harvester (PZT-Stack-FEH) for damage detection sensors was designed and characterized in this paper. The power harvested from ambient vibration in the environment is utilized for the power supply of the damage detection sensor. An elastic flextensional frame for force amplification was optimally designed to transmit more mechanical energy with high efficiency to the PZT-Stack-FEH. Instead of 31-mode single layer piezoelectric component, a 33-mode piezoelectric PZT multilayer stack was employed to increase mechanical-to-electrical energy conversion efficiency. Theoretical analysis and experiments were carried out. The experiment results show that the mechanical-to-electrical energy conversion efficiency of the PZT-Stack-FEH is 19%, 48.6 times more mechanical energy can be transmitted to PZT-Stack-FEH, and 26.5 times more electrical energy can be generated by using the PZT-Stack-FEH than directly applying force to the PZT multilayer stack. The power generation performance of the PZT-Stack-FEH with a proof mass was also studied. Experiment results show that he peak power/acceleration can attain 2400mW/g when the PZT-Stack-FEH is connected with a proof mass of 200 grams and 3280 mW/g with a proof mass of 500 grams.
机译：本文设计和表征了一种用于损伤检测传感器的压电锆钛酸铅钛酸盐（PZT）多层堆叠弯曲能收集器（PZT-Stack-FEH）。从环境中的环境振动中获取的功率用于损坏检测传感器的电源。优化设计了用于力放大的弹性弯曲框架，以将更多的机械能高效地传递到PZT-Stack-FEH。代替31模式单层压电组件，采用了33模式压电PZT多层堆栈来提高机械到电能的转换效率。进行了理论分析和实验。实验结果表明，PZT-Stack-FEH的机械能到电能的转换效率为19％，PZT-Stack-FEH可以传递的机械能要多48.6倍，而PZT-Stack-FEH可以产生26.5倍的电能使用PZT-Stack-FEH，而不是直接向PZT多层堆栈施加力。还研究了带有证明质量的PZT-Stack-FEH的发电性能。实验结果表明，当PZT-Stack-FEH与200克标准质量连接时，峰值功率/加速度可以达到2400mW / g，而500克标准质量连接到3280 mW / g。

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