磁気ディスク装置のシーク制御のための構造系と制御系の統合化設計

概要

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This paper proposed an integrated design of structural/control systems for head positioning control in hard disk drives. The purpose of the head positioning control in hard disk drives is to move the magnetic head suspension onto the desired track quickly and to keep it on track precisely against various disturbances and plant uncertainty. In the design of a structure system, the equation of motion is derived by using finite element method, and the target resonance peak are removed to a desirable resonance peak by structural dynamic modification in order to avoid control bandwidth. In the design of a control system, we apply H^∞ control to the head suspension positioning of hard disk drives. Further, to obtain a good transient response, we adopt the two-degree-of-freedom control scheme. The effect of the proposed method is illustrated by numerical examples.
2004-02-28