Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity
This paper presents an electret-based MEMS energy harvester synergizing the advantages of multi-modal structure and impact mechanism for broad operating bandwidth. The device with a volume of 295 mm3 comprises an electret-based primary subsystem for power generation and an electrode-free auxiliary s...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/142333 |
| _version_ | 1824454777785810944 |
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| author | Tao, Kai Tang, Lihua Wu, Jin Lye, Sun Woh Chang, Honglong Miao, Jianmin |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Tao, Kai Tang, Lihua Wu, Jin Lye, Sun Woh Chang, Honglong Miao, Jianmin |
| author_sort | Tao, Kai |
| collection | NTU |
| description | This paper presents an electret-based MEMS energy harvester synergizing the advantages of multi-modal structure and impact mechanism for broad operating bandwidth. The device with a volume of 295 mm3 comprises an electret-based primary subsystem for power generation and an electrode-free auxiliary subsystem for frequency tuning. The tiny auxiliary subsystem helps to induce close resonances with comparable outputs at low excitations, as well as introduces impact-based nonlinearity to drive the first resonant peak upward and further approach the second one at elevated excitations. The experimental results demonstrate that at an excitation of 12.8 m/$\text{s}^{2}$ , the 3-dB bandwidth of the first peak is increased from 20.4 to 60.4 Hz and a low frequency ratio of 1.15 between the two peaks is achieved. The two degree-of-freedom resonant structure with impact-based nonlinearity is systematically investigated through an equivalent circuit representation. An electrical equivalent circuit model of the proposed device with impact mechanism is derived. The circuit simulation confirms the nonlinear behavior of the system, and reveals the mechanism of peak shifting and bandwidth enhancing dynamics. |
| first_indexed | 2025-02-19T03:27:43Z |
| format | Journal Article |
| id | ntu-10356/142333 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:27:43Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1423332020-06-19T04:54:04Z Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity Tao, Kai Tang, Lihua Wu, Jin Lye, Sun Woh Chang, Honglong Miao, Jianmin School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering 2DOF Multimodal This paper presents an electret-based MEMS energy harvester synergizing the advantages of multi-modal structure and impact mechanism for broad operating bandwidth. The device with a volume of 295 mm3 comprises an electret-based primary subsystem for power generation and an electrode-free auxiliary subsystem for frequency tuning. The tiny auxiliary subsystem helps to induce close resonances with comparable outputs at low excitations, as well as introduces impact-based nonlinearity to drive the first resonant peak upward and further approach the second one at elevated excitations. The experimental results demonstrate that at an excitation of 12.8 m/$\text{s}^{2}$ , the 3-dB bandwidth of the first peak is increased from 20.4 to 60.4 Hz and a low frequency ratio of 1.15 between the two peaks is achieved. The two degree-of-freedom resonant structure with impact-based nonlinearity is systematically investigated through an equivalent circuit representation. An electrical equivalent circuit model of the proposed device with impact mechanism is derived. The circuit simulation confirms the nonlinear behavior of the system, and reveals the mechanism of peak shifting and bandwidth enhancing dynamics. 2020-06-19T04:54:04Z 2020-06-19T04:54:04Z 2018 Journal Article Tao, K., Tang, L., Wu, J., Lye, S. W., Chang, H., & Miao, J. (2018). Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity. Journal of Microelectromechanical Systems, 27(2), 276-288. doi:10.1109/JMEMS.2018.2792686 1057-7157 https://hdl.handle.net/10356/142333 10.1109/JMEMS.2018.2792686 2-s2.0-85041670179 2 27 276 288 en Journal of Microelectromechanical Systems © 2018 IEEE. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering 2DOF Multimodal Tao, Kai Tang, Lihua Wu, Jin Lye, Sun Woh Chang, Honglong Miao, Jianmin Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity |
| title | Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity |
| title_full | Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity |
| title_fullStr | Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity |
| title_full_unstemmed | Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity |
| title_short | Investigation of multimodal electret-based MEMS energy harvester with impact-induced nonlinearity |
| title_sort | investigation of multimodal electret based mems energy harvester with impact induced nonlinearity |
| topic | Engineering::Mechanical engineering 2DOF Multimodal |
| url | https://hdl.handle.net/10356/142333 |
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