Preliminary Study on Self-Sensing Method for Ion-Conductive Polymer Metal Composite (IPMC) Actuator Based on Current Detection

2013 ◽  
Vol 461 ◽  
pp. 967-971
Author(s):  
Shang Rong Li ◽  
Zhen Dong Dai ◽  
Min Yu

This paper presents a preliminary idea for sensing the deformation of ion-conductive polymer metal composite (IPMC) actuator based on current detection. This method is based on the principle that the impedance of the IPMC actuator is correlated to its bending curvature. Experimental results on the relationship between actuating voltage, current and deformation are presented. It is shown that there are phase differences among these three variables. And it is further shown that within a certain range of deformation, there is a correlation between the impedance and the deformation. The findings suggest it is possible to design a novel way to detect the output feedback of IPMC actuator.

2008 ◽  
Vol 56 ◽  
pp. 111-115 ◽  
Author(s):  
Byung Geun Ko ◽  
Hyok Chon Kwon ◽  
Song Jun Lee

This paper describes a novel method of self-sensing Ion-conductive Polymer Metal Composite (IPMC) actuator. Unlike the previous self-sensing technique, the proposed principle is based on the electric charge of the IPMC itself, which is correlated with its curvature. At the normal state, IPMC is electrically charged, and the amount varies according to the status of IPMC. While it is operated as an actuator, it also gives position information in the form of the electric charge amount, which is utilized for fast and accurate position control. In order to get the bending status of the actuator, the instantaneous voltage of IPMC is measured during the open state for input signal. The uncomplicated system is constructed to verify if the developed method is effective for the selfsensing actuator and evaluated by the experimental basis. The way to actuate the IPMC with selfsensing is a supplying discrete signal as an input, and it is also evaluated experimentally. This research also represents relatively simple structure for both actuation and sensing, which is very important factor to be implemented as a controller circuit for various applications.


2017 ◽  
Vol 80 (4) ◽  
pp. 205-214
Author(s):  
Jin Kawakita ◽  
Toyohiro Chikyow

2013 ◽  
Vol 64 (12) ◽  
pp. 685-686
Author(s):  
Jin KAWAKITA ◽  
Barbara HORVATH ◽  
Toyohiro CHIKYOW

Author(s):  
Kiwon Park ◽  
Myung-Keun Yoon

Ionic Polymer-Metal Composite (IPMC) consists of an ion conductive membrane plated by metallic electrodes on both surfaces. When it bends, a voltage is generated between two electrodes. Since IPMC is flexible and thin, it can be easily mounted on the various surfaces of a body. Moreover, IPMC can produce output voltages without attenuation under large deflections. The present study investigates a sensor system using IPMC to effectively detect the bending angles applied on IPMC sensor. The paper evaluates existing R and C circuit models of IPMC and selects the best model for the detection of angles. The circuit models describe the relationship between input bending angles and output voltages. The identification of R and C values was performed by minimizing the error between the real output voltages and the simulated output voltages from the circuit models of IPMC sensor. Then the output signal of a sensor was fed into the inverse model of the identified model to reproduce the bending angles. In order to support the validation of the model, the output voltages from an arbitrary bending motion were also applied to the selected inverse model, which successfully reproduced the arbitrary bending motion. On-going work includes investigation of the selected circuit model to better understand the dynamics of the sensor as well as the relationships between electric and physical parameters of the sensor.


2019 ◽  
Vol 793 ◽  
pp. 53-57 ◽  
Author(s):  
Man Wang

The Mechanical parameters of elastic modulus about the preparation technology of BaTiO3/IPMC (Ionic Polymer Metal Composite) were studied. In order to get the relationship between the elastic modulus and the different content of BaTiO3/IPMC the Mori-Tanaka method based on Eshelby equivalent inclusion theory was used. In order to verify the correctness of the model, Solution casting method was used to prepare different content of BaTiO3/IPMC (100:1,100:3,100:5,100:7). The elastic modulus of IPMC was texted by tensile testing and the bending test of cantilever. The result shows that: The elastic modulus of IPMC film increased by 6.3% ~ 84.7% with addition of BaTiO3. It was proved that the reinforced fillers could greatly improve the elasticity modulus of IPMC.


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