Theoretical study of the electromechanical efficiency of a loaded tubular dielectric elastomer actuator

B. Rechenbach, M. Willatzen, B. Lassen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

The electromechanical efficiency of a loaded tubular dielectric elastomer actuator (DEA) is investigated theoretically.In previous studies, the external system, on which the DEA performs mechanical work, is implemented implicitly by prescribing the stroke of the DEA in a closed operation cycle. Here, a more generic approach, modelling the external system by a frequency-dependent mechanical impedance which exerts a certain force on the DEA depending on its deformation, is chosen. It admits studying the dependence of the electromechanical efficiency of the DEA on the external system. A closed operation cycle is realized by exciting the DEA electrically by a sinusoidal voltage around a bias voltage.A detailed parametric study shows that the electromechanical efficiency is highly dependent on the frequency, amplitude, and bias of the excitation voltage and the mechanical impedance of the external system as well. Efficiencies of up to 93% can be observed for the Danfoss PolyPower tubular DEA if the mechanical impedance of the external system is adjusted to the mechanical impedance of the DEA or vice versa.The study shows that a tubular DEA can be dimensioned and operated such that it performs most efficiently for a given application. © 2015.
OriginalsprogEngelsk
TidsskriftApplied Mathematical Modelling
Vol/bind40
Udgave nummer2
Sider (fra-til)1232-1246
ISSN0307-904X
DOI
StatusUdgivet - 2016

Citer dette

@article{6c5d4855e5fb4e6fa2ac5f5a5407a878,
title = "Theoretical study of the electromechanical efficiency of a loaded tubular dielectric elastomer actuator",
abstract = "The electromechanical efficiency of a loaded tubular dielectric elastomer actuator (DEA) is investigated theoretically.In previous studies, the external system, on which the DEA performs mechanical work, is implemented implicitly by prescribing the stroke of the DEA in a closed operation cycle. Here, a more generic approach, modelling the external system by a frequency-dependent mechanical impedance which exerts a certain force on the DEA depending on its deformation, is chosen. It admits studying the dependence of the electromechanical efficiency of the DEA on the external system. A closed operation cycle is realized by exciting the DEA electrically by a sinusoidal voltage around a bias voltage.A detailed parametric study shows that the electromechanical efficiency is highly dependent on the frequency, amplitude, and bias of the excitation voltage and the mechanical impedance of the external system as well. Efficiencies of up to 93{\%} can be observed for the Danfoss PolyPower tubular DEA if the mechanical impedance of the external system is adjusted to the mechanical impedance of the DEA or vice versa.The study shows that a tubular DEA can be dimensioned and operated such that it performs most efficiently for a given application. {\circledC} 2015.",
author = "B. Rechenbach and M. Willatzen and B. Lassen",
note = "Cited By :1 Export Date: 22 March 2017 CODEN: AMMOD",
year = "2016",
doi = "10.1016/j.apm.2015.06.029",
language = "English",
volume = "40",
pages = "1232--1246",
journal = "Applied Mathematical Modelling",
issn = "0307-904X",
publisher = "Elsevier",
number = "2",

}

Theoretical study of the electromechanical efficiency of a loaded tubular dielectric elastomer actuator. / Rechenbach, B.; Willatzen, M.; Lassen, B.

I: Applied Mathematical Modelling, Bind 40, Nr. 2, 2016, s. 1232-1246.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Theoretical study of the electromechanical efficiency of a loaded tubular dielectric elastomer actuator

AU - Rechenbach, B.

AU - Willatzen, M.

AU - Lassen, B.

N1 - Cited By :1 Export Date: 22 March 2017 CODEN: AMMOD

PY - 2016

Y1 - 2016

N2 - The electromechanical efficiency of a loaded tubular dielectric elastomer actuator (DEA) is investigated theoretically.In previous studies, the external system, on which the DEA performs mechanical work, is implemented implicitly by prescribing the stroke of the DEA in a closed operation cycle. Here, a more generic approach, modelling the external system by a frequency-dependent mechanical impedance which exerts a certain force on the DEA depending on its deformation, is chosen. It admits studying the dependence of the electromechanical efficiency of the DEA on the external system. A closed operation cycle is realized by exciting the DEA electrically by a sinusoidal voltage around a bias voltage.A detailed parametric study shows that the electromechanical efficiency is highly dependent on the frequency, amplitude, and bias of the excitation voltage and the mechanical impedance of the external system as well. Efficiencies of up to 93% can be observed for the Danfoss PolyPower tubular DEA if the mechanical impedance of the external system is adjusted to the mechanical impedance of the DEA or vice versa.The study shows that a tubular DEA can be dimensioned and operated such that it performs most efficiently for a given application. © 2015.

AB - The electromechanical efficiency of a loaded tubular dielectric elastomer actuator (DEA) is investigated theoretically.In previous studies, the external system, on which the DEA performs mechanical work, is implemented implicitly by prescribing the stroke of the DEA in a closed operation cycle. Here, a more generic approach, modelling the external system by a frequency-dependent mechanical impedance which exerts a certain force on the DEA depending on its deformation, is chosen. It admits studying the dependence of the electromechanical efficiency of the DEA on the external system. A closed operation cycle is realized by exciting the DEA electrically by a sinusoidal voltage around a bias voltage.A detailed parametric study shows that the electromechanical efficiency is highly dependent on the frequency, amplitude, and bias of the excitation voltage and the mechanical impedance of the external system as well. Efficiencies of up to 93% can be observed for the Danfoss PolyPower tubular DEA if the mechanical impedance of the external system is adjusted to the mechanical impedance of the DEA or vice versa.The study shows that a tubular DEA can be dimensioned and operated such that it performs most efficiently for a given application. © 2015.

U2 - 10.1016/j.apm.2015.06.029

DO - 10.1016/j.apm.2015.06.029

M3 - Journal article

VL - 40

SP - 1232

EP - 1246

JO - Applied Mathematical Modelling

JF - Applied Mathematical Modelling

SN - 0307-904X

IS - 2

ER -