Energy Harvesting with Piezoelectric Element Using Vibroacoustic Coupling Phenomenon

Q2 Physics and Astronomy

Advances in Acoustics and Vibration Pub Date : 2013-12-23 DOI:10.1155/2013/126035

H. Moriyama, Hirotarou Tsuchiya, Y. Oshinoya

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引用次数: 2

Abstract

This paper describes the vibroacoustic coupling between the structural vibrations and internal sound fields of thin structures. In this study, a cylindrical structure with thin end plates is subjected to the harmonic point force at one end plate or both end plates, and a natural frequency of the end plates is selected as the forcing frequency. The resulting vibroacoustic coupling is then analyzed theoretically and experimentally by considering the dynamic behavior of the plates and the acoustic characteristics of the internal sound field as a function of the cylinder length. The length and phase difference between the plate vibrations, which maximize the sound pressure level inside the cavity, are clarified theoretically. The theoretical results are validated experimentally through an excitation experiment using an experimental apparatus that emulates the analytical model. Moreover, the electricity generation experiment verifies that sufficient vibroacoustic coupling can be created for the adopted electricity generating system to be effective as an electric energy-harvesting device.

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利用振动声耦合现象的压电元件能量收集

本文描述了薄结构振动与内部声场之间的振动声耦合。在本研究中，薄端板圆柱形结构在一端板或两端板上承受谐波点力，并选择端板的一个固有频率作为受力频率。然后，通过考虑板的动力特性和内部声场的声学特性作为圆柱体长度的函数，从理论上和实验上分析了由此产生的振声耦合。从理论上阐明了使腔内声压级最大化的板振动之间的长度差和相位差。利用模拟分析模型的实验装置进行了激振实验，验证了理论结果。此外，发电实验验证了所采用的发电系统可以产生足够的振声耦合，从而有效地作为电能收集装置。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Advances in Acoustics and Vibration ACOUSTICS-

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期刊介绍： The aim of Advances in Acoustics and Vibration is to act as a platform for dissemination of innovative and original research and development work in the area of acoustics and vibration. The target audience of the journal comprises both researchers and practitioners. Articles with innovative works of theoretical and/or experimental nature with research and/or application focus can be considered for publication in the journal. Articles submitted for publication in Advances in Acoustics and Vibration must neither have been published previously nor be under consideration elsewhere. Subject areas include (but are not limited to): Active, semi-active, passive and combined active-passive noise and vibration control Acoustic signal processing Aero-acoustics and aviation noise Architectural acoustics Audio acoustics, mechanisms of human hearing, musical acoustics Community and environmental acoustics and vibration Computational acoustics, numerical techniques Condition monitoring, health diagnostics, vibration testing, non-destructive testing Human response to sound and vibration, Occupational noise exposure and control Industrial, machinery, transportation noise and vibration Low, mid, and high frequency noise and vibration Materials for noise and vibration control Measurement and actuation techniques, sensors, actuators Modal analysis, statistical energy analysis, wavelet analysis, inverse methods Non-linear acoustics and vibration Sound and vibration sources, source localisation, sound propagation Underwater and ship acoustics Vibro-acoustics and shock.