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Proceedings Paper

A magnetically sprung vibration harvester
Author(s): P. Constantinou; P. H. Mellor; P. D. Wilcox
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Paper Abstract

The use of energy harvesting systems is becoming a more prominent research topic in supplying energy to wireless sensor nodes. The paper will present an analytical 'toolbox' for designing and modeling a vibration energy harvester where the moving mass is suspended magnetically. Calculations from the presented model and measurements from a prototype are compared, and the presence of system non-linearities is shown and discussed. The use of the magnetic suspension and its equivalent hardening spring suspension leads to the system's non-linearity, demonstrating a broad band response and 'jump' phenomenon characteristic. The benefits of these are discussed and the system's performance is compared with those from literature, showing similarity.

Paper Details

Date Published: 9 April 2010
PDF: 12 pages
Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 76430T (9 April 2010); doi: 10.1117/12.847528
Show Author Affiliations
P. Constantinou, Univ. of Bristol (United Kingdom)
P. H. Mellor, Univ. of Bristol (United Kingdom)
P. D. Wilcox, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 7643:
Active and Passive Smart Structures and Integrated Systems 2010
Mehrdad N. Ghasemi-Nejhad, Editor(s)

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