A Thermodynamically Consistent Port-Hamiltonian Model for Dielectric Elastomer Membrane Actuators and Generators

Authors

Abstract

This paper presents a port-Hamiltonian modeling formulation for a Dielectric Elastomer membrane. The model relates electrical and mechanical inputs to corresponding conjugate outputs, allowing to simulate the membrane transducer in actuation and energy harvesting application. Starting from a nonlinear, physics-based model developed in the authors’ previous works, a suitable function is initially proposed to quantify the overall electro-mechanical energy in the system. Subsequently, a complete description in terms of Hamiltonian, dissipation function, and system matrices is provided. The port-Hamiltonian formalism permits to assess the thermodynamic consistency of the model, making it a reliable tool for the prediction of energetic performance in dynamic applications. Furthermore, it opens up the possibility of applying powerful nonlinear analysis and design tools.

Keywords

Dielectric Elastomers; Dielectric Electro-Active Polymers; Mechatronics; Cone Membrane; Physical models; Port-Hamiltonian; Passivity

Citation

Journal: IFAC-PapersOnLine
Year: 2017
Volume: 50
Issue: 1
Pages: 4855–4862
Publisher: Elsevier BV
DOI: 10.1016/j.ifacol.2017.08.974
Note: 20th IFAC World Congress

BibTeX

@article{Rizzello_2017,
  title={{A Thermodynamically Consistent Port-Hamiltonian Model for Dielectric Elastomer Membrane Actuators and Generators}},
  volume={50},
  ISSN={2405-8963},
  DOI={10.1016/j.ifacol.2017.08.974},
  number={1},
  journal={IFAC-PapersOnLine},
  publisher={Elsevier BV},
  author={Rizzello, G. and Naso, D. and Seelecke, S.},
  year={2017},
  pages={4855--4862}
}

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References

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