Magnetostrictive shunt for vibration control and isolation: model, characteristics and similarities with piezoelectric shunt

This paper addresses the use of magnetostrictive (MS) shunt for vibration control and isolation. The mathematical treatment and the analytical formulas obtained are compared to those related to piezoelectric shunt, showing that they present the same form, implying the possibility of using the shunt optimisation formulas and control techniques developed for piezoelectric shunt in the context of MS shunt. Furthermore, the paper evidences the aspects which make the two types of shunt different when considering practical applications, also highlighting their effect on the controlled system and the main implications on the feasibility of the MS shunt. The theoretical results were validated by means of an experimental campaign in which MS shunt was employed to the aim of vibration isolation.