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Influence of the core saturation on the dynamic performance of the magnetostrictive actuator

Kowalski K., Nowak L., Knypiński Ł., Idziak P.

Archives of Electrical Engineering

2017

Vol. 66, nr 3

523--531

The paper considers the influence of core saturation on the dynamics of magnetostrictive fast-acting actuator. The field-circuit mathematical model of the dynamic operation of the capacitor-actuator system is applied. Two kinds of magnetostrictive core nonlinearity are taken into account. It has been proved that the saturation of the B-H curve practically does not affect the current, and capacitor voltage waveforms, but significantly affects a core elongation waveform. The computed results are compared with experimental ones.