Design of a motion energy harvester based on compliant mechanisms

a bi-stable frequency up-converter generator

Conference Paper (2019)
Authors

T.W.A. Blad (TU Delft - Mechatronic Systems Design)

D. Machekposhti (TU Delft - Mechatronic Systems Design)

J. L. Herder (TU Delft - Mechatronic Systems Design)

N. Tolou (TU Delft - Mechatronic Systems Design)

Research Group
Mechatronic Systems Design
To reference this document use:
https://doi.org/10.1007/978-3-030-20131-9_160
More Info
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Publication Year
2019
Language
English
Research Group
Mechatronic Systems Design
Pages (from-to)
1619-1626
ISBN (print)
978-3-030-20130-2
ISBN (electronic)
978-3-030-20131-9
DOI:
https://doi.org/10.1007/978-3-030-20131-9_160

Abstract

This work presents a novel design, model and prototype of a motion energy harvester based on bi-stability and frequency up-conversion. The Parametric Frequency up-converter Generator (PFupCG). The PFupCG was designed to harvest energy under conditions where the amplitude of the driving motion is larger than the internal displacement limit. Instead of an impact member, the PFupCG uses a compliant suspension mechanism that combines a bi-stable characteristic with a strong stiffening behavior as a result of geometric effects. This resulted in a prototype of the PFupCG with an internal-to-applied motion amplitude ratio of 0.2. A case study was carried out where the PFupCG was analyzed by simulation and experiment for vibration conditions representative of human walking motion (2Hz, 25 mm).

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