PARAMETER-IDENTIFICATION OF THE COMPLETE-MOVING-HYSTERESIS MODEL USING MAJOR LOOP DATA

The complete-moving-hysteresis (CMH) model computes both the reversibl e and the irreversible components of the magnetization and the relatio nship between these components. An important question associated with a given model is the corresponding identification strategy which provi des a method to experimentally obtain the parameters of the model. In order to be experimentally applicable, such an identification strategy has to be robust in the presence of experimental error. This paper pr esents a complete parametric identification strategy for the CMH model that is applicable to a wide range of recording materials. The method is robust in the presence of experimental errors and requires the mea surement of the major loop, the major remanence loop, the virgin magne tization curve and the virgin remanence magnetization curve only. The method is experimentally verified on various commercial recording medi a. It is found that the model and the identification strategy are in e xcellent agreement with measured higher-order asymmetrical reversal cu rves for commercial samples with markedly different characteristics. T he limitations of the identification strategy are discussed. A general ized Preisach function for the CMH model is suggested that is applicab le to soft magnetic materials, as well.