Influence of eddy currents on the dynamics of the magnetostrictive actuator for plasma gun valve drive

In the paper, the influence of eddy current induced in the magnetostrictive core on the dynamics of fast-acting actuator applied as a driving device for valve of plasma gun is considered. The field-circuit mathematical model of the dynamic operation of the system capacitor-actuator has been applied. Two kinds of the core non-linearity have been taken into account. It has been proved that eddy currents have an essential effect on the actuator dynamics.