Application of Neural Network System for Track-Following Control of a Dual Stage Hard Disk Drive

摘要

This paper describes track-following control of a dual stage hard disk drive using neural networks. The use of the dual stage actuator in hard disk drive has become a means of achieving increased servo actuator bandwidth. The dual stage actuator presented here uses a voice-coil motor (VCM) as a coarse actuator and a piezoelectric actuator (PZT) as a fine actuator. First, this paper clarifies the classification of the controller architecture for the dual stage actuator. Next, the two types of neural network controller for track-following control of the dual stage hard disk drive are presented and compared. Numerical and experimental results for the track-following control systems of the dual stage hard disk drive show the validity of the proposed control systems.