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Experimentally verified model of electrostatic energy harvester with internal impacts

Truong, Binh Duc; Le, Cuong Phu; Halvorsen, Einar
Journal article
Accepted version
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2015HalvorsenExperimentally (496.6Kb)
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http://hdl.handle.net/11250/2564739
Utgivelsesdato
2015
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  • Institutt for mikrosystemer [442]
  • Publikasjoner fra CRIStin [2658]
Originalversjon
IEEE International Conference on Micro Electro Mechanical Systems. 2015, (February), 1125-1128.   10.1109/MEMSYS.2015.7051162
Sammendrag
This paper presents experimentally verified progress on modeling of MEMS electrostatic energy harvesters with internal impacts on transducing end-stops. The two-mechanical-degrees-of-freedom device dynamics are described by a set of ordinary differential equations which can be represented by an equivalent circuit and solved numerically in the time domain using a circuit simulator. The model accounts for the electromechanical nonlinearities, nonlinear damping upon impact at strong accelerations and the nonlinear squeezed-film damping force of the in-plane gap-closing transducer functioning as end-stop. The comparison between simulation and experimental results shows that these effects are crucial and gives good agreement for phenomenological damping parameters. This is a significant step towards accurate modeling of this complex system and is an important prerequisite to improve performance under displacement-limited operation.
Tidsskrift
IEEE International Conference on Micro Electro Mechanical Systems

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