S-Shaped Nonlinearity in Electrical Resistance of Electroactive Supercoiled Polymer Artificial Muscle

Kazuya TADA; Masaki KAKU

doi:10.1587/transele.2019ECS6013

IEICE Transactions on Electronics

Online ISSN : 1745-1353
Print ISSN : 0916-8524

Regular Section

S-Shaped Nonlinearity in Electrical Resistance of Electroactive Supercoiled Polymer Artificial Muscle

Kazuya TADA, Masaki KAKU

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Keywords: actuator, supercoiled polymer artificial muscle, twisted and coiled polymer actuator, electrical resistance, mathematical model

JOURNAL FREE ACCESS

2020 Volume E103.C Issue 2 Pages 59-61

DOI https://doi.org/10.1587/transele.2019ECS6013

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Abstract

S-shaped nonlinearity is found in the electrical resistance-length relationship in an electroactive supercoiled polymer artificial muscle. The modulation of the electrical resistance is mainly caused by the change in the contact condition of coils in the artificial muscle upon deformation. A mathematical model based on logistic function fairly reproduces the experimental data of electrical resistance-length relationship.

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