A distributed parametric model of shape memory alloy-based resonant frequency tunable cantilevered PZT energy harvester with tip mass

This paper presents an analytical model of piezoelectric vibration energy harvester consists of shape memory alloy (SMA) plate which can tune the resonant frequency. As the energy harvester should be tuned to excitation frequency to drive the maximum power, the temperature of SMA is varied to tune t...

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Bibliographic Details
Published in:ISSS journal of micro and smart systems 2019-06, Vol.8 (1), p.13-24
Main Authors: Vasundhara, M. G., Senthilkumar, M., Kalavathi, G. K.
Format: Article
Language:English
Subjects:
Engineering
Nanotechnology and Microengineering
Original Article
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Summary:This paper presents an analytical model of piezoelectric vibration energy harvester consists of shape memory alloy (SMA) plate which can tune the resonant frequency. As the energy harvester should be tuned to excitation frequency to drive the maximum power, the temperature of SMA is varied to tune the natural frequency of the composite beam. In addition to SMA, it also consists of the piezoelectric layer, substructure layer, and tip mass. Using Euler–Bernoulli beam assumption, equations for the frequency response of voltage, current, and power outputs with temperature are obtained. From the parametric study, it is observed that the tuning of natural frequency is 25–26%, for the first three modes of vibration in short- and open-circuit conditions.
ISSN:2509-7989
2509-7997
DOI:10.1007/s41683-019-00034-0