| 压电俘能器阻抗匹配分析及实验研究 |
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| 引用本文： | 朱宪荣,王红艳,徐蕾. 压电俘能器阻抗匹配分析及实验研究[J]. 压电与声光, 2011, 33(6) |
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| 作者姓名： | 朱宪荣 王红艳 徐蕾 |
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| 作者单位： | 1. 齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔,161006
2. 齐齐哈尔大学计算机与控制工程学院,黑龙江齐齐哈尔,161006 |
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| 摘 要： | 为了研究负载电阻对压电悬臂梁振动俘能性能的影响,使用有限元法对直接与负载相连的悬臂梁压电振子进行压电-电路耦合分析,得到了负载电阻对压电俘能器谐振频率、输出电压和功率的影响关系,并进行实验验证.研究结果表明,随着外接负载电阻的增大,俘能器谐振频率有所增加,从短路谐振频率到开路谐振频率变化范围可达到2 Hz.此外,负载阻值的大小也会影响俘能器的发电能力,负载电阻越大,输出电压越高,但存在匹配电阻使压电俘能器的输出功率达到最大.因此,通过合理选用负载电阻可实现固有频率微调谐和增加发电能力的目的.
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| 关 键 词： | 压电俘能器 悬臂梁 谐振频率 阻抗匹配 |
Analysis and Experiment on Impendence Match of Piezoelectric Energy Harvester |
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| ZHU Xianrong , WANG Hongyan , XU Lei. Analysis and Experiment on Impendence Match of Piezoelectric Energy Harvester[J]. Piezoelectrics & Acoustooptics, 2011, 33(6) |
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| Authors: | ZHU Xianrong WANG Hongyan XU Lei |
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| Affiliation: | ZHU Xianrong1,WANG Hongyan2,XU Lei2 (1.College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihaer 161006,China,2.College of Computer and Control Engineering,China) |
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| Abstract: | In order to study the impact of the load resistance on the performance of the piezoelectric cantilever in energy harvesting,a coupled piezoelectric-circuit finite element model is presented for analyzing the resonance frequency,output voltage and output power of piezoelectric cantilever connected with different load resistance.The analyzing result is verified against the experimental results.It shows that increasing load resistance value can lead to increasing resonance frequency of piezoelectric energy har... |
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| Keywords: | piezoelectric energy harvester cantilever beam resonance frequency impedance match |
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