A phase-stabilized servo elontroller for dual-stage actuators in hard disk drives

被引：51
作者：
Kobayashi, M [1 ]
Nakagawa, S
Nakamura, S
机构：
[1] Hitachi Ltd, Mech Engn Res Lab, Ibaraki 3000013, Japan
[2] Hitachi Ltd, Data Storage Syst Div, Kanagawa 2568510, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 02期
关键词：
decoupled feedback control; dual-stage actuator; hard disk drive; windage;
D O I：
10.1109/TMAG.2003.808938
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A phase-stabilized servo controller was developed based on a Nyquist plot for moving-suspension dual-stage actuators. The controller uses the suspension resonances of a PZT microactuator to compensate for the track misregistration (TMR) due to windage disturbance caused by suspension vibration. Experimental results obtained using a prototype 3.5-in hard disk drive show that the crossover frequency of the open loop is 2.0 kHz, and that the root mean square of the TMR due to windage disturbance is reduced by 23% compared to that of-a conventional notch-based dual-stage controller.
引用
收藏
页码：844 / 850
页数：7
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