Nonuniform multi-rate sampled-data H∞ following control of HDDs

被引:5
作者
Ohno, K [1 ]
Hara, S [1 ]
机构
[1] Fujitsu Labs Ltd, Autonomous Syst Lab, Kanagawa, Japan
来源
ACC: PROCEEDINGS OF THE 2005 AMERICAN CONTROL CONFERENCE, VOLS 1-7 | 2005年
关键词
D O I
10.1109/ACC.2005.1470469
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper is concerned with the use of the sampled-data H-infinity servo controller with generalized hold for the track-following control of hard disk drives (HDDs). Conventional input multi-rate control normally utilizes a fast zero order hold that is uniformly time-divided piecewise constant function. However, there is no need to assume such an uniformity in hold duration. Elimination of this assumption increases the design degree-of-freedom. In this paper, we propose to invoke the sampled-data H-infinity servo control theory to have an optimal piecewise continuous hold function. The derived function is used as a basis of our proposed nonuniformly time-divided piecewise constant function, which is introduced to implement it on standard systems with digital-to-analogue conversion devices. We conducted a set of simulations as well as experiments, and confirmed that the proposed method can improve the control performance.
引用
收藏
页码:3229 / 3234
页数:6
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