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http://dx.doi.org/10.3795/KSME-A.2004.28.6.717

System Analysis and Design for Vibration-Based Power Generation using Piezoelectric Materials  

Keum, Myoung-Hun (서강대학교 대학원 기계공학과)
Kim, Kyung-Ho (서강대학교 대학원 기계공학)
Lee, Seung-Yep (서강대학교 기계공학과)
Ko, Byoung-Sik (한국시뮬레이션 기술(주)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.6, 2004 , pp. 717-725 More about this Journal
Abstract
A power generation systems are proposed to convert ambient mechanical vibration into electrical energy using cantilever-type piezoelectric materials. The vibration-based power device can be used for self-powered systems without batteries. This paper presents the theoretical analysis for the coupled equations of piezoelectric and structural motions and investigates the dynamic characteristics of the self-power system using transfer function method. The theoretical model is verified by the finite element analysis of the resonance frequency, the dynamic response of the structure and the sensor sensibility. Experimental results measured using a prototype system agree with the theoretical predictions. The system is shown to produce 34.5 ㎼ in average. Finally, we perform the optimal design for system variables to maximize output power.
Keywords
Ambient Energy; Electric Energy; Energy Converter; Micro Power Generation; System Analysis; Optimal Design; Piezoelectric Materials; Vibration Energy;
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