フレキシブルディスク装置におけるヘッド・ディスクインタフェースの安定性解析 : 第5報,ばね連成項の影響

概要

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In order to clarify the destabilizing mechanism of the head to flexible disk interface, we investigate the destabilizing mechanism caused by the coupling effect of the transverse and pitch stiffnesses. The eigenvalue analysis is carried out for two analytical models : the coupled suspension stiffnesses model and the coupled contact stiffnesses model. It is shown that instability of the head-disk coupling system is primarily caused by the instability of the head-suspension system due to the frictional force and the coupling effect of stiffnesses. Thus the unstable region of the head-suspension system due to the coupling effect of suspension stiffnesses is examined in term of the stiffnesses, frictional coefficient and head mass ccenter position. It is found that the natural mode of vibration of the head-disk coupling system is strongly destabilized under the unstable conditions of the head-suspension system, There exists a similar unstable region of the contact stiffness and strong instabilities when the coupling effect of transverse and pitch contact stiffnesses is taken into account. This instability is weak when the unstable natural frequencies of upper and lower head-suspension systems are greatly separated.
一般社団法人日本機械学会の論文
1995-03-25