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A Self Sensing Actuator using Ion Polymer Metal Composite
Kyoung Kwan Ahn(안경관),Jong Il Yoon(윤종일),Dinh Quang Truong(딩광청),Doan Ngoc Chi Nam(돤옥치남) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
This paper presents a self sensing actuator using a smart material, ion polymer metal composite. An ion polymer metal composite (IPMC) is an electro-active polymer (EAP) that bends in response to a small electrical field as a result of mobility of cations in the polymer network and vice versa. A typical IPMC sheet is constructed with a thin ionic polymer membrane and two metal electrode layers out side. Based on the advanced characteristics of IPMC, actuating and sensing abilities, a self sensing IPMC actuator is setup in this study. In order to realize the self sensing behavior, a simple method to estimate the IPMC bending curvature under a supplied voltage is proposed as a combination of voltages measured at some IPMC points and a representative vector. This suggested method is evaluated by means of tests and real bending curvature measured by a CCD laser displacement sensor.