Design and simulation of Voice Coil Motor for the micro-electric load simulator

The advance of high-frequency response and micro-torque electric actuator motivates the study on high performance motor for load simulator. A novel high-precision swing-arm Voice Coil Motor (VCM) has been proposed in this paper. The research investigates the feasibility of this new structure applied to the VCM. Abiding by the equivalent rotary inertia idea, mechanical structure and magnetic field interactive design have been implemented with the electromagnetic simulation software-Ansoft´s Maxwell. An iterative optimal design process is then proposed to maximize the force constant of the VCM and to minimize the inertia of the rotor. Simulation results are given to illustrate that the proposed design procedure can preliminarily achieve a satisfactory performance.