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http://dx.doi.org/10.5050/KSNVE.2013.23.6.546

Mathematical Model for a Mode-sequence Reversed Two-degrees-of-freedom Piezoelectric Vibration Energy Harvester  

Lee, Sowon (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Yoon Young (School of Mechanical and Aerospace Engineering, Seoul National University)
Kim, Jae Eun (School of Mechanical and Automotive Engineering, Catholic University of Daegu)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.23, no.6, 2013 , pp. 546-552 More about this Journal
Abstract
A cantilevered piezoelectric energy harvester(PEH) and an auxiliary mass-spring unit can be integrated into a novel two-degrees-of-freedom PEH where its lowest eigenmode is not an in-phase modes but an out-of-phase mode. This typical behavior was shown to enhance output power considerably compared with its stand-alone counterpart. The objective of this study is to newly develop a continuum-based mathematical model suitable for efficient analysis of the mode-sequence reversed PEH. Once such a mathematical model is available, various physical behaviors can be analytically investigated for better designs. After a new mathematical model is developed, its validity is checked by using ANSYS results, in terms of resonant frequency, open-circuit voltage, and output power with a specified external resistance.
Keywords
Piezoelectric Vibration Energy Harvesting; Mode Sequence Reversion; Mathematical Model; Frequency-tuned mass-spring Unit;
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Times Cited By KSCI : 1  (Citation Analysis)
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