2インチフロッピーディスク装置の安定性ならびにディスク・スタビライザーの最適設計に関する研究

概要

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This paper presents a study on the stability of the 2" floppy disk drive. A design method of the disk stabilizer that makes the rotating disk stable is presented. The stabilizer and the read/write head are both modeled by translational springs with high stiffness. The air-film stiffness within the disk cover is determined from the flow rate of the air inside the cover, based on the Navier-Stokes equations. The solution is obtained by applying the Galerkin method to the governing equations, with the use of the multimodal expansion approximation. Numerical results show that the rotating 2" floppy disk is unstable at 3600 rpm without the stabilizer. It is also shown that the stability of rotating disk is strongly dependent on the shape of the stabilizer attached to the disk surface. A stabilizer that contacts the disk at four points is developed and shown to be quite effective in stabilizing the 2" disk rotating at 3600 rpm.
一般社団法人日本機械学会の論文
1990-12-25