Dynamic transduction characterization of magnetostrictive actuators

The development of an analysis approach for formulation of transduction or input - output representations for magnetostrictive actuators is presented. The transduction model is developed through application of an impedance modeling approach which includes the mechanical dynamics and the electro-magneto-mechanical interaction of the actuator device. Experimental behavior correlation is also presented. The transduction model allows for in-depth investigation of the frequency-dependent behaviors of the magnetostrictive actuator such as energy conversion factor, output stroke, and force.