Reduction Method of Residual Balancing Error on Auto-Balancer Mechanism

摘要

A reduction method of residual positioning error of balancing balls on an auto-balancer mechanism is proposed. Rotation speed profile control method improves the performance of auto-balancer by providing a constant speed period at a critical speed in the middle of motor acceleration. In order to confirm its effect, equations of motion of the auto-balancer mechanism including balance balls are modeled based on non-stationary vibration model. Time-variant dynamics of the auto-balancer in accelerating the motor is simulated by using MATLAB and the balance balls are confirmed to move toward a balanced position. Furthermore, an experimental study by this method is performed on an optical disc drive with the auto-balancer and vibration amplitude suppression is verified.