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Energy-based hysteresis model for magnetostrictive transducers

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3 Author(s)
Calkins, F.T. ; Phantom Works Flight/Configuration Technol., Boeing Co., Seattle, WA, USA ; Smith, R.C. ; Flatau, A.B.

This paper addresses the modeling of hysteresis in magnetostrictive transducers in the context of control applications that require an accurate characterization of the relation between input currents and strains output by the transducer. This relation typically exhibits significant nonlinearities and hysteresis because of inherent properties of magnetostrictive materials. The characterization considered here is based on the Jiles-Atherton mean field model for ferromagnetic hysteresis in combination with a quadratic moment rotation model for magnetostriction. As demonstrated by comparison with experimental data, the magnetization model very adequately quantifies both major and minor loops under various operating conditions. The combined model can then be used to accurately characterize output strains at moderate drive levels. The advantages of this model lie in the small number (six) of required parameters and its flexibility under a variety of operating conditions

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Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 2 )