The identification of discrete Preisach model based on IPMC

Ion-exchange polymer metal composite(IPMC) is one kind of electroactive polymer(EAP) material, which is also called artificial muscle. Like most smart materials, such as piezoelectric, shape memory alloys (SMA), hysteresis also exits in IPMC. Based on the property of classic Preisach model, a discrete Preisach model, which was simulated using MATLAB, verified two properties, wiping-out property and congruency property, of the classic Preisach model. We discuss different identification signals, and give a novel signal which is effective for IPMC. The results of identification using the novel signal are fitable to solve the values of density function of Preisach, and we finally obtain all positive values of density function.