非线性压电电磁复合式俘能器的结构设计
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国家“八六三”计划基金资助项目(SS2013AA011104)

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Design of a New Nonlinear Hybrid Piezoelectric and Electromagnetic Energy Harvester
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    摘要:

    非线性技术可使压电式能量采集获得较宽的振动频率和较高的输出电压,该文基于非线性振动研究提出了一种新型的非线性压电电磁复合式俘能器,将非线性压电电磁复合式俘能系统等效为含有非线性刚度的质量弹簧阻尼振动系统,推导出俘能器的总输出平均功率公式。在0.6 g简谐激励下,磁铁间距为2.5 mm,3 mm,4 mm时,对非线性压电电磁复合式俘能器进行了实验测试,结果表明,随着磁铁间距的减小,引力增大,非线性俘能器的谐振频率降低,3 dB带宽升高。

    Abstract:

    As nonlinear technology allows piezoelectric energy harvesting to obtain a wider vibration frequency and a higher output voltage, this paper proposed a new nonlinear hybrid piezoelectric and electromagnetic energy harvester based on nonlinear vibration. The new nonlinear hybrid piezoelectric and electromagnetic energy harvester could be equivalent to a qualityspringdamper vibration system with nonlinear stiffness, the total average output power of the energy harvester was deduced. In 0.6 g harmonic excitation, the distance between magnets was 2.5 mm, 3 mm,4 mm, the nonlinear hybrid piezoelectric and electromagnetic energy harvester was measured. The results showed that as the distance between magnets decreased with increasing gravity, the resonant frequency of the nonlinear energy harvester was reduced, and the 3 dB bandwidth increased.

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武丽森,刘海鹏,张广义.非线性压电电磁复合式俘能器的结构设计[J].压电与声光,2016,38(4):570-574. WU Lisen, LI Haipeng, ZHANG Guangyi. Design of a New Nonlinear Hybrid Piezoelectric and Electromagnetic Energy Harvester[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2016-08-03
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