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Proceedings Paper

A method to estimate the deformation and the absorbed current of an IPMC actuator
Author(s): Claudia Bonomo; Luigi Fortuna; Pietro Giannone; Salvatore Graziani; Salvatore Strazzeri
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Paper Abstract

Based on a previous paper presented at EAPAD Conference on 2005 and supported by the European Community by the research project ISAMCO (Ionic polymer metal composite as Sensors and Actuators for Motion COntrol, 2004-2006) inside the sixth Framework Program, the proposed paper goes on describing the results about the characterization of IPMC materials as motion actuators, obtained by using an improved infrared-based system designed, realized and characterised to this aim. The system was required to detect both the IPMC absorbed current and its consequent deflection, under the effect of the applied voltage. The deflection is detected by the IR system, that uses a differential configuration in order to reduce non-linearity, peculiar to IR devices. The measurement system is used to identify and then validate a model, proposed to describe the IPMC actuator behaviour in a wide range of operating conditions. The model was obtained by adopting a grey box approach. By acquiring the signals involved: the applied voltage, the absorbed current and the IPMC displacement, for different inputs such as pulses, sinusoidal waves (with varying frequency and amplitude) and noise, and by post-processing these signals, all the parameters relative to the IPMC actuator were identified and several tests were performed in order to compare the behaviour of the actuator as predicted by the model with the experimental one. The obtained results show a very good accordance between the simulated and the real actuator response, hence represent a good validation of the proposed model.

Paper Details

Date Published: 22 March 2006
PDF: 12 pages
Proc. SPIE 6168, Smart Structures and Materials 2006: Electroactive Polymer Actuators and Devices (EAPAD), 61681W (22 March 2006); doi: 10.1117/12.638242
Show Author Affiliations
Claudia Bonomo, Univ. degli Studi di Catania-Viale (Italy)
Luigi Fortuna, Univ. degli Studi di Catania-Viale (Italy)
Pietro Giannone, Univ. degli Studi di Catania-Viale (Italy)
Salvatore Graziani, Univ. degli Studi di Catania-Viale (Italy)
Salvatore Strazzeri, Univ. degli Studi di Catania-Viale (Italy)

Published in SPIE Proceedings Vol. 6168:
Smart Structures and Materials 2006: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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