SERVO SIGNAL QUALITY AND DUAL-STAGE ACTUATOR SYSTEM FOR MICRON TRACKWIDTH

被引：2
|
作者：
AKAGI, K [1 ]
OTSUKI, H [1 ]
YAMAGUCHI, T [1 ]
MORI, K [1 ]
机构：
[1] HITACHI LTD,MECH ENGN RES LAB,TSUCHIURA,IBARAKI 300,JAPAN
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 134卷 / 2-3期
关键词：
D O I：
10.1016/0304-8853(94)00152-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An algorithm to design servo systems for future magnetic disk drives has been developed. An optimal relationship between the trackwidth and the servo bandwidth of a magnetic disk drive which minimizes the limit signal S/N ratio is proposed which takes into account position signal noise and mechanical vibrations. The idea of required accuracy distribution is introduced. A dual-stage actuator with a single-input single-output (SISO) system is used to confirm the calculated results. This paper describes a method for obtaining the desired servo signal quality and introduces a relationship between trackwidth and servo performance that can make it possible to design head positioning systems for trackwidths under one micron.
引用
收藏
页码：242 / 247
页数：6
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