C-1-4 サンプル点間応答を考慮した最大出力許容集合によるハードディスク装置のシーク終了判定

Abstract

The heads of HDD must be controlled at the center of each track within an allowable tracking-error-bound to read and write data safely. Thus, track-seeking process should finish only when the heads completely converge to the bound. Although the heads eventually converge to the bound after sufficient time because of the stable dynamics, it is important for the reduction of the access time to judge the end of the track-seeking as early as possible. In this paper, we propose a new method to determine the end of track seeking by using the maximal output admissible set considering an inter-sampling response. The effectiveness of the proposed method is shown by simulations.