磁気ヘッドポジショナの高精度追従位置決め制御に関する研究 : 第1報, 主共振安定化フィードバックの提案と同相位置決め機構との比較 : 機械力学,計測,自動制御

概要

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This paper describes two types of head positioning mechanism of hard disk drive comparatively. One is a conventional swing-arm positioning mechanism with a minor-loop analog feedback controller that stabilizes the primary out-of-phase vibration mode. An observer circuit estimates a velocity of the vibration mode from VCM voltage and current. Estimated velocity of the vibration mode is fed back to stabilize the vibration mode. The other one is the in-phase positioning mechanism that has a sub-actuator for track following. A swing arm head positioning mechanism that has both of main-and sub-actuator was manufactured to confirm the effectiveness of the minor-loop feedback and in-phase positioning mechanism. Characteristics of two positioning mechanisms are shown with simulation and experimental results.
社団法人日本機械学会の論文
2001-04-25