A HAMMERSTEIN-BASED DYNAMIC-MODEL FOR HYSTERESIS PHENOMENON

The Hammerstein configuration, which includes a nonlinear static block followed by a linear dynamic block, is applied to model the rate-depe ndent and temperature-dependent hysteresis phenomenon, The nonlinear s tatic block is realized by a modified Preisach model, which includes b oth the irreversible and reversible components of magnetization, The l inear dynamic block is realized by a low-pass filter, which takes into account the rate-dependent effects of hysteresis. Temperature depende ncies are incorporated into the model by fitting the model parameters as piecewise-linear functions of temperature, A procedure is described for the extraction of a single set of model parameters over the frequ ency, amplitude, and temperature ranges of interest. The theory is ver ified experimentally.