NONLINEAR DYNAMIC CHARACTERISTICS CAUSED BY HYSTERESIS OF THE GIANT MAGNETOSTRICTIVE TRANSDUCER
超磁致伸缩换能器的磁滞非线性动力学仿真

Based on the assumptions of the output displacement of the giant magnetostrictive material, a nonlinear dynamic model for the giant magnetostrictive transducer is built, in which the output mandril is used as the main parameter and the nonlinear hysteresis inside the giant magnetostrictive material and the prestressed spring characteristics are considered at the same time. The Simulink system is used in the dynamic simulation process of the giant magnetostrictive transducer system. The dynamic simulation results indicate that the transducer system is in a stable period movement with non-linear hysteresis characteristics. The numerical results obtained in this paper agree well with the experiment results in literature. The results also show that the square term in the relation for the nonlinear spring is the main factor that influences the transducer system model.