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Electro-Active Polymer Based Soft Tactile Interface for Wearable Devices
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- Authors
- Seongcheol Mun, Sungryul Yun, Saekwang Nam, Seung Koo Park, Suntak Park, Bong Je Park, Jeong Mook Lim, Ki-Uk Kyung
- Issue Date
- 2018-02
- Citation
- IEEE Transactions on Haptics, v.11, no.1, pp.15-21
- ISSN
- 1939-1412
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- This paper reports soft actuator based tactile stimulation interfaces applicable to wearable devices. The soft actuator is prepared by multi-layered accumulation of thin electro-active polymer (EAP) films. The multi-layered actuator is designed to produce electrically-induced convex protrusive deformation, which can be dynamically programmable for wide range of tactile stimuli. The maximum vertical protrusion is 650μm} and the output force is up to 255 mN. The soft actuators are embedded into the fingertip part of a glove and front part of a forearm band, respectively. We have conducted two kinds of experiments with 15 subjects. Perceived magnitudes of actuator's protrusion and vibrotactile intensity were measured with frequency of 1 Hz and 191 Hz, respectively. Analysis of the user tests shows participants perceive variation of protrusion height at the finger pad and modulation of vibration intensity through the proposed soft actuator based tactile interface.
- KSP Keywords
- 55 Mn, Electro active polymer(EAP), Multi-layered actuator, Output force, Protrusion height, Soft actuator, Tactile interface, Tactile stimulation, Tactile stimuli, User tests, Vibration intensity