Vibration minimized access control for disk drives

被引：40

作者：

Mizoshita, Y. ^{[1
]}

Hasegawa, S. ^{[1
]}

Takaishi, K. ^{[1
]}

机构：

[1] Fujitsu Ltd, Atsugi, Japan

来源：

IEEE Transactions on Magnetics | 1996年 / 32卷 / 3 /2期

关键词：

Actuators - Bandwidth - Closed loop control systems - Hard disk storage - Harmonic generation - Magnetic heads - Position control - Resonance - Tracking (position) - Transfer functions - Vibrations (mechanical);

D O I：

10.1109/20.492867

中图分类号：

学科分类号：

摘要：

A new access control method called SMART (Structural Vibration Minimized Acceleration Trajectory) has been developed for hard disk drives. The access formula is derived from minimum-jerk cost function. The closed loop of access mode is based on velocity control and the target velocity to keep minimum-jerk is easily calculated in function of position by DSP controller. With SMART control, the high harmonics of the actuator acceleration are suppressed in comparison with conventional control. Residual vibration after the access operation and spacing fluctuation of the head slider are both greatly decreased.

引用

页码：1793 / 1798