Optimal multirate control design for hard disk drive servo systems

被引：17
|
作者：
Chen, RF
Guo, GX
Huang, T
Low, TS
Weerasooriya, S
机构：
[1] Data Storage Inst, Singapore 119260, Singapore
[2] Seagate Technol, Scotts Valley, CA 95066 USA
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1998年 / 34卷 / 04期
关键词：
multirate control; optimization; HDD servo;
D O I：
10.1109/20.706736
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：
This paper presents a multirate digital controller design for HDD servo systems via direct parameter optimization approach. In order to find a satisfactory multirate controller with good transient and steady state performance, a linear quadratic performance index with stability constraints is introduced. The controller parameters are selected based on the HDD servo system transient response data instead of a detailed plant model. The proposed method can improve the performance of LQG multirate servo designs without knowing exact plant parameters or noise model. The effect of controller order on system performance is also studied. For a 4th order system studied, it is found that a 4th order controller is sufficient to achieve the optimal performance.
引用
收藏
页码：1898 / 1900
页数：3
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