フレキシブルディスク装置におけるディスクーヘッド系の不安定振動 : 第1報,実験的解析

概要

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Head assembly vibrations in flexible disk drive units (FDD) are discussed in this paper. The head assembly on a disk encounters unstable vibration in FDD which induce read and write malfunctions and decrease the life expectancy of the head assembly. In this study, vibrations are experimentally analyzed using an FDD unit modified to rotate at a variable speed. The unstable vibrations of the disk are measured by a photonic sensor. It was found that the heads vibrate in a pitching mode, while the disk vibrates in a wave propagation mode toward the head, and the both modes are couples. It was also found that instability occurs only in a certain speed range of speed, and that the frequency of the unstable vibrations increases as the rotational speed increases.
社団法人日本機械学会の論文
1989-08-25