Robust control applications

Scherer, Carsten, Bernussou, Jacques, Arzelier, Denis and Postlethwaite, Ian (2006) Robust control applications. In: 5th IFAC SYmposium on Robust Control Design, 5-7 July 2006, Toulouse, France.

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Official URL: http://dx.doi.org/10.3182/20060705-3-FR-2907.00122

Abstract

This plenary presentation will demonstrate the growing importance of robust control theory by describing its application to some non-trivial practical control problems. The talk will begin with a description of the design and flight test of a new batch of Hȡ controllers for the Bell 205 helicopter. At the heart of each controller is an Hȡ loop-shaping controller, augmented with a hand-tuned reference filter to improve tracking performance and to reduce a perceived phase lag which pilots had complained of previously. Flight testing revealed that, with such an architecture, it was relatively easy to get Level 1 handling qualities ratings in low aggression manoeuvres. Further fine tuning resulted in Level 1 qualities for high aggression manoeuvres and one controller performed to Level 1 standard in all manoeuvres tested. The second half of the talk will consider how robust control techniques can be used to design anti-windup compensators to counter problems associated with saturating actuators, such as pilot-induced oscillations in aircraft and stability/robust performance problems in state-of-the-art hard-disk drive servo systems. The paper is written in two parts: Part 1 considers helicopter control and Part 2 addresses saturation problems in high-performance head-positioning servo systems in high-density hard-disk drives.

Item Type: Conference or Workshop Item (Paper)
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics and Information Sciences
Depositing User: Sarah Howells
Date Deposited: 19 Nov 2012 14:42
Last Modified: 10 Aug 2015 11:35
URI: http://nrl.northumbria.ac.uk/id/eprint/10304

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