Full Content is available to subscribers

Subscribe/Learn More  >

Distributed Parameter Modelling and Experimental Validation of a Piezoelectric Bimorph Cantilever Energy Harvester

[+] Author Affiliations
Sajid Rafique, P. Bonello

University of Manchester, Manchester, UK

Paper No. SMASIS2009-1264, pp. 71-81; 11 pages
  • ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 1: Active Materials, Mechanics and Behavior; Modeling, Simulation and Control
  • Oxnard, California, USA, September 21–23, 2009
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-4896-8 | eISBN: 978-0-7918-3857-0
  • Copyright © 2009 by ASME


Recent developments in low-power portable applications have accelerated research in the field of energy harvesting from ambient sources. Piezoelectric energy harvesters have remarkable potential to convert unused ambient vibrations into useful electrical energy that can subsequently provide power to low-power electronic systems for an infinite life span. This paper concerns the derivation of the mathematical model of a bimorph piezoelectric cantilever beam with distributed inertia, and its experimental validation. Previous research on such a component included a tip mass, which reduced the influence of the distributed inertia of the beam and restricted effective operation to low frequencies. The present research excludes the tip mass. The effects of backward electrical coupling on the mechanical properties of the harvester are investigated, particularly the dependence of the induced additional stiffness and damping on the electrical load and the piezoelectric properties. Both the model and the experimental results showed that the natural frequencies and the response amplitude of the harvester exhibited considerable shifts due to the electrical coupling, indicating change in stiffness and damping. The mechanical coupling effects on the electrical parameters (voltage, current and power output) are also analyzed.

Copyright © 2009 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In