Design of Intersample Response in a Hard Disk Control System
Design of Intersample Response in a Hard Disk Control System作者机构：Graduate School of Engineering University of Hyogo Himeji 671-2201 Japan
出 版 物：《Journal of Mechanics Engineering and Automation》 (机械工程与自动化（英文版）)
年 卷 期：2012年第2卷第7期
页 面：405-410页
学科分类：0810[工学-信息与通信工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 0835[工学-软件工程] 0802[工学-机械工程] 081002[工学-信号与信息处理] 080201[工学-机械制造及其自动化]
主 题：Multirate control system single-rate control system hard disk drive state-space representation intersample response sample response pole assignment.
摘 要：The present paper discusses a design method for the head position in a Hard Disk Drive （HDD） control system. In the HDD control system, the sampling interval of the head position is constrained because of the hardware specifications, but the hold interval of the control input is not constrained. In the present study, a multirate control system is designed, in which the sampling and the hold intervals are not equal. A multirate control law, which stabilizes a closed-loop system, is extended using newly introduced parameters such that the sample response of the plant output is maintained. Furthermore, intersample ripples in the steady state are eliminated using the new design parameters, which can be selected independently of the sample response. As a result, the intersample response can be improved independently of the sample response. The proposed method is applied to a benchmark problem of an HDD system, and its effectiveness is demonstrated.
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