Plucked Piezoelectric Bimorphs for Energy Harvesting

  • Michele Pozzi
  • Meiling ZhuEmail author


In this chapter, the plucking technique of frequency up-conversion is introduced, modelled and applied to energy harvesting. The aim of the technique is to bridge the gap between the high-frequency response of piezoelectric energy harvesters and the low-frequency input that is most often available from the ambient environment. After covering the general principle of plucking excitation, the plucking action is modelled analytically as well as with finite element analysis. Finally, the application of plucked piezoelectric bimorphs to a wearable knee-joint harvester (the pizzicato energy harvester) is discussed in some depth to show the potential of the plucking technique of frequency up-conversion.


Energy Harvesting Gait Cycle External Electrode Piezoelectric Energy Harvester Piezoelectric Coupling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors acknowledge the financial support dstl(MoD) and EPSRC (EP/H020764/1) which sponsored this work. M. Pozzi would like to thank his wife Wimonrat for her support during the research work that led him to the pizzicato energy harvester and the modelling of the plucking excitation—M. Pozzi


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Department of Manufacturing and MaterialsCranfield UniversityCranfieldUK

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