高速回転するディスク円板を有するヘッドディスクアッセンブリ機構の動的設計法に関する研究(情報機器コンピュータメカニクス2 -機構・制御,IIP2004 情報・知能・精密機器部門講演会)

概要

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Recently, it is important to clarify air flow induced vibration issues for hard disk drives in order to achieve ultra-high magnetic recording density. We studied flow induced flutter vibration of co-rotating two disks by using LDV. We also measured pressure distribution between two disks using a pressure sensor. From the experimental results, we found that the arm which is inserted between two disks suppresses the disk flutter vibration. In addition, it is found that the mean pressure increases and its fluctuation decreases, when the arm is inserted between two disks. Therefore, it is suggested that there is the correlation between the disk flutter vibration and the pressure fluctuation between two disks, and the disk.flutter can be suppressed by inserting the arm or spoiler that decreases the pressure fluctuation between two disks.
2004-03-22