Energy-based hysteresis model for magnetostrictive transducers

with:a quadratic moment rotation model for magnetostriction. This paper add resses the modeling of hysteresis in magnetostrictive transducers in the co ntext of control applications that require an accurate characterization of the relation between input currents and strains output by the transducer, T his relation typically exhibits significant nonlinearities and hysteresis b ecause of inherent properties of magnetostrictive materials. The characteri zation considered here is based on the Jiles-Atherton mean field-model for ferromagnetic hysteresis in combination As demonstrated by comparison with experimental data, the magnetization model very adequately quantifies both major and minor loops under various operating conditions. The combined mode l can then be used to accurately characterize output strains at moderate dr ive levels. The advantages of this model lie in the small number (six) of r equired parameters and its flexibility under a variety of operating conditi ons.