Experimental Verification of Linear Oscillatory Actuator with Switchable Degree-of-Freedom Using Electropermanent Magnet

Abstract

　This paper proposes a linear oscillatory actuator (LOA) that can switch its degree of freedom (DOF) for the purpose of achieving a wider bandwidth. Electropermanent magnet (EPM) is utilized as an energy-saving solution to switch the DOF by absorbing and desorbing secondary mass with primary mass. Finite element analysis and measurement using a prototype clarify the effectiveness of the proposed LOA.