Magnetically-Coupled Cantilevers with Antiphase Bistable Behavior for Kinetic Energy Harvesting

This work deals with bistable devices for vibration energy harvesting. We have addressed this subject through MEMS cantilevers and the use of two facing magnets, with opposed magnetization, in order to obtain the desired double-well potential energy function. However the fabrication on MEMS devices...

Full description

Saved in:
Bibliographic Details
Published in:Procedia engineering 2012, Vol.47, p.1065-1068
Main Authors: Andó, B., Baglio, S., Latorre, L., Maiorca, F., Nouet, P., Trigona, C.
Format: Article
Language:English
Subjects:
Energy harvesting
magnetically-coupled cantilevers
nonlinear behavior
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work deals with bistable devices for vibration energy harvesting. We have addressed this subject through MEMS cantilevers and the use of two facing magnets, with opposed magnetization, in order to obtain the desired double-well potential energy function. However the fabrication on MEMS devices of micromagnets placed very close one each other and having non-parallel magnetization is seriously challenging: parallel magnetization would be greatly preferable. Based on this latter consideration, new device architecture is presented here: two parallel cantilevers, with a magnet on each tip, are used. The two magnets are equally oriented and therefore provide repulsive forces that in turn induce antisymmetric bistable behaviors in the two cantilevers. The system has been analytically modeled and an experimental prototype has been realized and tested obtaining very promising results.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2012.09.334