DESIGN AND CONSTRUCTION OF A RESONANT MAGNETOSTRICTIVE MOTOR

A resonant magnetostrictive motor was built and tested. Its stator mod ules are made of a ring and two Terfenol-D linear actuators. Two reson ant modes of the modules (a translation mode and a flexure mode) are c oupled in order to produce elliptical vibrations which are used to tra nsmit motion to two rotors by friction. A low rotating speed of 100 de grees/s, and a tol que of about 2 Nm were reached. Our goal was to sho w that Terfenol-D can be used for making high torque motors and that r esonance can be beneficial for that purpose and for improving efficien cy.