NDLI: Reduced-order model for MEMS PZT vibrational energy harvester exhibiting buckling bistability

Content Provider	IET Digital Library
Author	Scerri, J. Grech, I. Gatt, E. Casha, O.
Abstract	Estimating the behaviour of buckling clamped–clamped beams entails solving nonlinear partial differential equations (PDEs). Several techniques are found in the literature that deal with such PDEs; techniques that also take into account initial curvatures and/or imperfections. However, when the system configuration is different from that of one single beam it becomes more involved. In this Letter, a buckling energy harvester is presented. Owing to the nature of its design, a nonlinear differential equation (not a PDE) capable of capturing all the salient characteristics of its behaviour could be developed. The effectiveness of the model is validated using finite element analysis. The energy harvester is designed using the SINTEF piezoVolume process and operated in the d 31 mode. With electrical damping only, the device, designed for validation purposes, achieved a power density of 0.13 mW cm−3 at 3.5 g ms−2 at 560 Hz and produced d 31 open-circuit voltages of 0.6 V.
Starting Page	409
Ending Page	411
Page Count	3
ISSN	00135194
Volume Number	51
e-ISSN	1350911X
Issue Number	Issue 5, Mar (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/51/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.3804
Journal	Electronics Letters
Publisher Date	2015-02-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Buckling Buckling And Instability Buckling Bistability Buckling Clamped-clamped Beam Differential Equation (numerical Analysis) Electrical Damping Energy Harvesting FEA Finite Element Analysis Frequency 560 Hz Function Theory And Analysis Mechanical Engineering MEMS And NEMS Device Technology MEMS PZT Vibrational Energy Harvester Micromechanical And Nanomechanical Device And System Micromechanical Device Micromechanics Nonlinear DE Nonlinear Differential Equation Nonlinear Partial Differential Equation Nonlinear PDE Numerical Analysis Numerical Approximation And Analysis Open Circuit Voltage Partial Differential Equation Power Density Reduced Order Model SINTEF PiezoVolume Process Vibrations Vibrations And Shock Wave Voltage 0.6 V
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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