Utilising Nonlinear Air Damping as a Soft Mechanical Stopper for MEMS Vibration Energy Harvesting

Shao-Tuan Chen, Sijun Du, Emmanuelle Arroyo, Yu Jia, Ashwin A Seshia

Research output: Contribution to journalConference article

Abstract

This paper reports on the theory and experimental verification of utilising air damping as a soft stopper mechanism for piezoelectric vibration energy harvesting to enhance shock resistance. Experiments to characterise device responsiveness under various vibration conditions were performed at different air pressure levels, and a dimensionless model was constructed with nonlinear damping terms included to model PVEH response. The relationship between the quadratic damping coefficient ζ n and air pressure is empirically established, and an optimal pressure level is calculated to trade off harvestable energy and device robustness for specific environmental conditions.
Original languageEnglish
Article number012098
JournalJournal of Physics: Conference Series
Volume773
Issue number1
DOIs
Publication statusPublished - 6 Dec 2016

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