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Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion
This paper investigates a piezoelectric energy harvester that consists of a piezoelectric cantilever and a tip mass for horizontal rotational motion. Rotational motion results in centrifugal force, which causes the axial load on the beam and alters the resonant frequency of the system. The piezoelec...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070642/ https://www.ncbi.nlm.nih.gov/pubmed/32098324 http://dx.doi.org/10.3390/s20041206 |
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author | Su, Wei-Jiun Lin, Jia-Han Li, Wei-Chang |
author_facet | Su, Wei-Jiun Lin, Jia-Han Li, Wei-Chang |
author_sort | Su, Wei-Jiun |
collection | PubMed |
description | This paper investigates a piezoelectric energy harvester that consists of a piezoelectric cantilever and a tip mass for horizontal rotational motion. Rotational motion results in centrifugal force, which causes the axial load on the beam and alters the resonant frequency of the system. The piezoelectric energy harvester is installed on a rotational hub in three orientations—inward, outward, and tilted configurations—to examine their influence on the performance of the harvester. The theoretical model of the piezoelectric energy harvester is developed to explain the dynamics of the system and experiments are conducted to validate the model. Theoretical and experimental studies are presented with various tilt angles and distances between the harvester and the rotating center. The results show that the installation distance and the tilt angle can be used to adjust the resonant frequency of the system to match the excitation frequency. |
format | Online Article Text |
id | pubmed-7070642 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70706422020-03-19 Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion Su, Wei-Jiun Lin, Jia-Han Li, Wei-Chang Sensors (Basel) Article This paper investigates a piezoelectric energy harvester that consists of a piezoelectric cantilever and a tip mass for horizontal rotational motion. Rotational motion results in centrifugal force, which causes the axial load on the beam and alters the resonant frequency of the system. The piezoelectric energy harvester is installed on a rotational hub in three orientations—inward, outward, and tilted configurations—to examine their influence on the performance of the harvester. The theoretical model of the piezoelectric energy harvester is developed to explain the dynamics of the system and experiments are conducted to validate the model. Theoretical and experimental studies are presented with various tilt angles and distances between the harvester and the rotating center. The results show that the installation distance and the tilt angle can be used to adjust the resonant frequency of the system to match the excitation frequency. MDPI 2020-02-22 /pmc/articles/PMC7070642/ /pubmed/32098324 http://dx.doi.org/10.3390/s20041206 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Su, Wei-Jiun Lin, Jia-Han Li, Wei-Chang Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion |
title | Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion |
title_full | Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion |
title_fullStr | Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion |
title_full_unstemmed | Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion |
title_short | Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion |
title_sort | analysis of a cantilevered piezoelectric energy harvester in different orientations for rotational motion |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070642/ https://www.ncbi.nlm.nih.gov/pubmed/32098324 http://dx.doi.org/10.3390/s20041206 |
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