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Proceedings Paper

Frequency response characteristics of IPMC sensors with current/voltage measurements
Author(s): Kentaro Takagi; Norihiro Kamamichi; Boyko Stoimenov; Kinji Asaka; Toshiharu Mukai; Zhi-Wei Luo
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Paper Abstract

This paper discusses a model of IPMC sensors and the characteristics of the frequency responses. There are two different methods of measurements, the current sensing and the voltage sensing, which exhibit completely different frequency responses each other. A simple model based on Onsager's equation is shown in order to explain the experimental results of the current sensing. The voltage sensing model is derived by the equivalent transform of the voltage and the current sources. In contrast to the constant gain of the charge response, the characteristics of the voltage response are directly related to the impedance dynamics. In the experiments, the frequency responses of the charge/current sensing and the voltage sensing for two species of counter ion are measured. The ratio of the obtained frequency responses and the measured impedance are also compared to validate the voltage sensing model. Though the theoretical prediction of the sensor coefficient does not match the experimental one, the structure of the model agrees with the experimental data.

Paper Details

Date Published: 10 April 2008
PDF: 10 pages
Proc. SPIE 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008, 692724 (10 April 2008); doi: 10.1117/12.776189
Show Author Affiliations
Kentaro Takagi, Nagoya Univ. (Japan)
RIKEN (Japan)
Norihiro Kamamichi, Tokyo Denki Univ. (Japan)
RIKEN (Japan)
Boyko Stoimenov, RIKEN (Japan)
Kinji Asaka, AIST (Japan)
RIKEN (Japan)
Toshiharu Mukai, RIKEN (Japan)
Zhi-Wei Luo, Kobe Univ. (Japan)
RIKEN (Japan)

Published in SPIE Proceedings Vol. 6927:
Electroactive Polymer Actuators and Devices (EAPAD) 2008
Yoseph Bar-Cohen, Editor(s)

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