H2 control for head positioning in axial and radial dimensions for self-servo track writing

被引：13

作者：

Du, Chunling ^{[1
]}

Xie, Lihua ^{[2
]}

Teoh, Jul Nee ^{[2
]}

Guo, Guoxiao ^{[1
]}

机构：

[1] ASTAR, DSI, Singapore 117608, Singapore

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY | 2008年 / 16卷 / 01期

关键词：

2-D systems; hard disk drives (HDDs); 2-D H-2 control; self-servo track writing (SSTW); servo control; stabilization;

D O I：

10.1109/TCST.2007.903106

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The self-servo track writing (SSTW) process for hard disk drives (HDDs) consists of axial (or time) and radial (or track) dimensions and is described by using a 2-D model. Within the 2-D system framework, the error propagation containment problem of the SSTW is formulated as a 2-D stabilization problem, and the position error minimization problem is formulated as a 2-D H-2 control problem. The adopted 2-D controller is designed with the easily implemented linear matrix inequality (LMI) approach. With the stored error information of the preceding track, the 2-D control scheme is realizable. The simulation results demonstrate that the error propagation is prevented by the 2-D control scheme and the positioning accuracy is remarkably improved by the 2-D H-2 control scheme. Also, servo performance is evaluated with the 1-D controller in time dimension, obtained from the designed 2-D controller.

引用

页码：177 / 181

页数：5

共 37 条

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