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The mathematical model and frequency characteristics of giant magnetostrictive actuator

Stachowiak D.

Poznan University of Technology Academic Journals. Electrical Engineering

2010

No. 63

127-136

In the last 30 years, discovery of Terfenol-D has led to development of magnetostrictive actuators. In the paper the mathematical model of magnetostrictive actuator is presented. The model is suitable to describe relation between the input magnetic field, the magnetization in the magnetostrictive rod, the output displacement, magnetostriction and the strain of magnetostriction actuator. Frequency characteristics of giant magnetostrictive actuator are obtained. The selected results of calculations are compared and discussed.