Analysis on electric power consumption characteristics of cylindrical linear oscillatory actuator with Halbach permanent magnet array mover under electromechanical resonance frequency

Abstract

This paper deals with electric power consumption characteristics of cylindrical linear oscillatory actuator with Halbach permanent magnet array mover under electromechanical resonance frequency. The control parameters such as back-emf constant, torque constant, resistance, and inductance are obtained from characteristic equations and experimental results. Then, the voltage equation and mechanical motion equation after deriving control parameters are proposed by impedance modeling considering mechanical component, and theoretical resonance frequency is predicted by impedance modeling. Finally, dynamic simulation and experimental results are presented for drive characteristics such as current, power factor, and displacement according to the various values of frequency, and this paper find that the current and electric power consumed in linear actuator have the minimum value at the resonance frequency. ？ 2011 American Institute of Physics.