Abstract
This paper reports a duo-mode vibration structure for increasing usable bandwidth in a micromachined electromagnetic energy harvester. The energy harvester is characterized by using finite element analysis on the vibration frequency and amplitude. Since a spiral diaphragm is much more flexible than a cantilever diaphragm for a given size, a spiral is inserted in to a U-shape cantilever, forming the proposed energy harvester. By designing the coupled structure, not only the resonance frequency is reduced, but also the usable bandwidth is broadened. Experimental results show that the device generates electromotive force of 1.00 and 1.03 mV, 7.66 and 7.43 nW (into 27 ω load) at two resonance frequencies at 211 and 274 Hz, respectively.
Original language | English |
---|---|
Title of host publication | MEMS 2014 - 27th IEEE International Conference on Micro Electro Mechanical Systems |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 382-384 |
Number of pages | 3 |
ISBN (Print) | 9781479935086 |
DOIs | |
State | Published - 2014 |
Event | 27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014 - San Francisco, CA, United States Duration: 26 Jan 2014 → 30 Jan 2014 |
Publication series
Name | Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS) |
---|---|
ISSN (Print) | 1084-6999 |
Conference
Conference | 27th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2014 |
---|---|
Country/Territory | United States |
City | San Francisco, CA |
Period | 26/01/14 → 30/01/14 |