Frequency response characteristics of IPMC sensors with current/voltage measurements

Kentaro Takagi; Norihiro Kamamichi; Boyko Stoimenov; Kinji Asaka; Toshiharu Mukai; Zhi-Wei Luo

doi:10.1117/12.776189

10 April 2008 Frequency response characteristics of IPMC sensors with current/voltage measurements

Kentaro Takagi, Norihiro Kamamichi, Boyko Stoimenov, Kinji Asaka, Toshiharu Mukai, Zhi-Wei Luo

Proceedings Volume 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008; 692724 (2008) https://doi.org/10.1117/12.776189
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

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.

Citation Download Citation

Kentaro Takagi, Norihiro Kamamichi, Boyko Stoimenov, Kinji Asaka, Toshiharu Mukai, and Zhi-Wei Luo "Frequency response characteristics of IPMC sensors with current/voltage measurements", Proc. SPIE 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008, 692724 (10 April 2008); https://doi.org/10.1117/12.776189

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