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Power optimization of a conical dielectric elastomer actuator for resonant robotic systems

Research output: Contribution to journalArticle

Original languageEnglish
Article number100619
Number of pages8
JournalExtreme Mechanics Letters
Volume35
Early online date16 Dec 2019
DOIs
DateAccepted/In press - 8 Dec 2019
DateE-pub ahead of print - 16 Dec 2019
DatePublished (current) - 1 Feb 2020

Abstract

Insects utilize resonant actuation to amplify the flapping stroke and improve the energy efficiency. The inherent elasticity in dielectric elastomer actuators (DEAs) offers the advantage over conventional actuators of achieving resonant actuation with no additional elastic elements required. Despite that the resonant actuation of the DEAs have attracted great research interests, no optimization has been done on the output performance of resonating DEAs. In this work, a double cone DEA (DCDEA) configuration is adopted and a numerical model is developed to characterize its dynamic response. An effective power study framework is developed and the power output of the DCDEA is optimized against its pre-stretch ratios and spacer length. To demonstrate the potential exploitation of resonant DEA performance, a bioinspired flapping wing mechanism driven by the optimized DCDEA design is developed with a peak flapping stroke of 31˚ at its resonance of 30 Hz.

    Research areas

  • dielectric elastomer actuator, power optimization, dynamic modelling, resonant actuation, flapping wing robots

Documents

Documents

  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at https://www.sciencedirect.com/science/article/pii/S2352431619302871. Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 2.33 MB, PDF document

    Embargo ends: 1/02/21

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    Licence: CC BY-NC-ND

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