Time constant analysis of micromotors for virtual reality helmets

Abstract

This paper focuses on the study of an ultra-micro permanent magnet stepper motor with automatic adjustment of interpupillary distance for VR helmets. To precisely adjust the rotation of the motor, the control requirements for the motor are very important, which also makes the time constant of the micro permanent magnet stepper motor of great significance. Starting from the voltage, torque balance equations and thermal balance equations, the paper analyzes and compares the electrical time constant, mechanical time constant, electromechanical time constant and thermal time constant of the micro permanent magnet claw-pole stepper motor in basic theory. Different specifications of micro permanent magnet claw-pole stepper motors were used to obtain some relationships between time constant and motor performance, which provided reference for the design and control research of micro permanent-magnet claw-pole stepper motors.