Proposal of Linear Oscillatory Actuator with Two Movers using Three Coils

Abstract

　Electromagnetic type linear oscillatory actuators are used in many devices because of high controllability and small size. In previous studies, a linear oscillatory actuator with two movers and two coils that effectively generates vibrations in a wide frequency range by impressing same-phase or reverse-phase current, is developed. However, two H bridge circuits are needed for driving the actuator. In this paper, a new actuator with two movers that can drive using a three-phase inverter, are proposed. First, the characteristics of the proposed actuator are clarified by finite element analysis. Finally, there are compare with those of the conventional actuator.