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Design of a New Piezoelectric Energy Harvester Based on Compound Two-Stage Force Amplification Frame
Wen, Shihao1; Xu, Qingsong1; Zi, Bin2
2018-05-15
Source PublicationIEEE SENSORS JOURNAL
ISSN1530-437X
Volume18Issue:10Pages:3989-4000
Abstract

This paper presents the design and verification of a piezoelectric energy harvester with compound two-stage force amplification frame and compact footprint size to achieve high power output for a piezoelectric stack. An improved design of the conventional bridge-type force amplification frame is proposed with compound beam, which is able to maintain the large force amplification ratio while bearing a large loading force. Analytical model is developed based on Euler-Bernoulli beam theory to predict the force amplification ratio of the compound two-stage force amplifier. The architectural parameters are optimally tuned to achieve the largest force amplification ratio, so as to obtain the maximum power output for the piezoelectric stack under other constraints. Simulation study is carried out by finite element analysis to demonstrate the advantage of the proposed compound two-stage force amplifier over conventional design. Moreover, a prototype harvester is fabricated for experimental testing. Results indicate that the proposed harvester features high safety factor, large amplification ratio, and compact size, which can be adopted in practical application for scavenging energy induced by human footstep during walking.

KeywordEnergy Harvesting Piezoelectric Material Mechanical Design Force Amplification Frame
DOI10.1109/JSEN.2018.2820221
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Instruments & Instrumentation ; Physics
WOS SubjectEngineering, Electrical & Electronic ; Instruments & Instrumentation ; Physics, Applied
WOS IDWOS:000430999700010
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
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Citation statistics
Cited Times [WOS]:11   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macau, China
2.School of Mechanical Engineering, Hefei University of Technology, Hefei, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Wen, Shihao,Xu, Qingsong,Zi, Bin. Design of a New Piezoelectric Energy Harvester Based on Compound Two-Stage Force Amplification Frame[J]. IEEE SENSORS JOURNAL,2018,18(10):3989-4000.
APA Wen, Shihao,Xu, Qingsong,&Zi, Bin.(2018).Design of a New Piezoelectric Energy Harvester Based on Compound Two-Stage Force Amplification Frame.IEEE SENSORS JOURNAL,18(10),3989-4000.
MLA Wen, Shihao,et al."Design of a New Piezoelectric Energy Harvester Based on Compound Two-Stage Force Amplification Frame".IEEE SENSORS JOURNAL 18.10(2018):3989-4000.
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