Eight parametric resonances in a multi-frequency wideband MEMS piezoelectric vibration energy harvester
AffiliationUniversity of Cambridge; University of Chester
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AbstractThis paper presents a multi-order parametric resonant MEMS piezoelectric disk membrane, for the purpose of broadening the operational frequency bandwidth of a vibration energy harvester by employing the nonlinearity-induced bandwidth broadening associated with this phenomenon as well as the multi-frequency response associated with the higher orders. The fundamental mode -3dB bandwidth at 2.0 g recorded 55 Hz, while the first parametric resonant peak exhibited 365 Hz and the -3dB of the first 8 orders accumulated to 604 Hz. The membrane parametric resonator also experimentally demonstrated over 3-folds improvement in power density compared to a conventional direct resonator (cantilever), when subjected to band-limited white noise.
CitationJia, Y., Du, S., & Seshia, A. A. (2016, 24-28 Jan. 2016). Eight parametric resonances in a multi-frequency wideband MEMS piezoelectric vibration energy harvester. 2016 IEEE 29th International Conference on Micro Electro Mechanical Systems (MEMS 2016)
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