Discrete Robust Anti-Windup to Improve a Novel Dual-Stage Large-Span Track-Seek/Following Method

Herrmann, Guido, Hredzak, Branislav, Turner, Matthew, Postlethwaite, Ian and Guo, Guoxiao (2008) Discrete Robust Anti-Windup to Improve a Novel Dual-Stage Large-Span Track-Seek/Following Method. IEEE Transactions on Control Systems Technology, 16 (6). pp. 1342-1351. ISSN 1063-6536

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Official URL: http://dx.doi.org/10.1109/TCST.2008.917876

Abstract

An application of an advanced anti-windup compensation
scheme to a recently developed large-span track-seeking and
track-following method for dual-stage actuator systems in hard disk drives (HDDs) is presented. In the original dual-stage servo control approach, micro-actuator saturation was addressed using the Circle Criterion to guide the controller design. However, such an approach does not allow the fine-tuning of seeking and settling speeds and also limits the class of linear controllers for the secondary loop due to the Circle Criterion. Anti-windup compensation removes many of these limitations and improves settling duration, disturbance rejection, recovery from saturation in the secondary actuator loop, and design flexibility. A general anti-windup (AW) compensator is presented in discrete time bringing together a number of AW concepts and results previously given in continuous time. Robustness is taken into account and performance requirements are expressed via frequency weights.

Item Type: Article
Subjects: H400 Aerospace Engineering
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: Sarah Howells
Date Deposited: 25 Apr 2012 14:37
Last Modified: 10 Aug 2015 11:31
URI: http://nrl.northumbria.ac.uk/id/eprint/6466

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