NDLI: A comparison of multirate robust track-following control synthesis techniques for dual-stage and multi-sensing servo systems in hard disk drives

Content Provider	IEEE Xplore Digital Library
Author	Xinghui Huang Nagamune, R. Horowitz, R.
Copyright Year	2006
Description	Author affiliation: Seagate Technol., Pittsburgh, PA (Xinghui Huang)
Abstract	This paper presents the design and analysis of multirate robust track-following controllers for a dual-stage servo system with a MEMS microactuator (MA) and an instrumented suspension. Two major categories of controller design methodologies are considered. The first is based on sequential single-input single-output (SISO) design techniques, and includes the sensitivity decoupling (SD) method and the PQ method. High rate inner loop damping control is implemented followed by a low rate outer loop controller. The second category is based on multirate, multi-input multi-output (MIMO) design techniques, including mixed $H_{2}/H_{infin},$ mixed $H_{2}/_{mu}$ and robust $H_{2}$ synthesis. In this case, a set of controllers are designed all at once by explicitly considering plant uncertainty and hence robust stability. Comparisons are made between these design techniques in terms of nominal $H_{2}$ performance, robust stability, and robust performance. The advantages and disadvantages of each of these methods are discussed, as well as the guidelines for practical implementation
Sponsorship	American Automatic Control Council IFAC
File Size	375933
File Format	PDF
ISBN	1424402093
e-ISBN	1424402107
DOI	10.1109/ACC.2006.1656395
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Robust control Control system synthesis Servomechanisms Hard disks Robust stability Control systems Micromechanical devices Microactuators Instruments Design methodology
Content Type	Text
Resource Type	Article

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