A U-shaped actuation system for dual-stage actuators used in hard disk drives

被引：0
|
作者：
Kenji Suzuki
Eiji Soga
Shinsuke Nakagawa
Toshihiko Shimizu
机构：
[1] Hitachi,Hitachi Research Laboratory
[2] Ltd.,Hitachi Research Laboratory
[3] Hitachi Global Storage Technologies Japan,undefined
[4] Ltd.,undefined
[5] Hitachi,undefined
[6] Ltd.,undefined
来源：
Microsystem Technologies | 2012年 / 18卷
关键词：
Actuation System; Hard Disk Drive; Notch Filter; Voice Coil Motor; Actuation Method;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, we propose an actuation system, called U-shaped actuation, for dual-stage actuator to suppress the arm mode flutter. We manufactured an actuator using this actuation method and measured the frequency response. We found that the frequency response had an in-phase arm mode frequency and that there was little difference between each head at arm sway and suspension sway mode. Next, we designed a controller and compared its sensitivity function with that of conventional actuation. By applying stabilizing control to the in-phase arm mode, NRRO of the arm flutter of the outer and inner arms was suppressed by 10.9 and 13.2 %, respectively.
引用
收藏
页码：1543 / 1547
页数：4
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