Effect of potential shape and excitation spectrum on power harvested from ambient vibration

In recent years, there have been experimental developments in energy harvesting from ambient vibrations in small-scale sensing. The ultimate goal is to replace batteries in these sensors. Linear systems have a narrow bandwidth, but ambient vibrations occur over a potentially broad range of frequencies. Nonlinear systems-in particular, bistable systems have a wide bandwidth. The objective of this thesis is to understand the dependence of power harvested on the shape of the potential-in the transition from linear to bistable. A single degree-of-freedom mathematical model was developed and simulated in MATLAB over varying operating conditions and potential function parameters. The findings from this thesis support experimental results that nonlinearity improves the amount of power that is harvested.

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Mechanical Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2015

Author dc:creator

• Chan, Jasmine H. (Jasmine Hei)

Advisor dc:contributor.advisor

• Konstantin Turitsyn.

• Mechanical Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/98958

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/98958