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Title: Design of optimal robust fixed-structure controllers using the quantitative feedback theory approach
Authors: Halikias, G.D.
Zolotas, Argyrios C.
Nandakumar, R.
Keywords: Robust control
Quantitative feedback theory
Loop-shaping
Optimization
Hydraulic actuator
Issue Date: 2007
Publisher: © IMechE / Professional Engineering Publishing
Citation: HALIKIAS, G.D., ZOLOTAS, A.C. and NANDAKUMAR, R., 2007. Design of optimal robust fixed-structure controllers using the quantitative feedback theory approach. Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 221(4), pp. 697-716.
Abstract: A simple optimization algorithm is proposed for designing fixed-structure controllers for highly uncertain systems. The method can be used to automate the loop-shaping step of the quantitative feedback theory (QFT) design procedure and guarantees robust stability and performance to the feedback loop for all parameters in the plant's uncertainty set. To avoid over-designing the system, the algorithm can be used to minimize either the asymptotic gain, the open-loop crossover frequency or the 3 dB bandwidth of the closed-loop system (nominal or worst case). The proposed algorithm is illustrated with a design example involving a hydraulic actuator, carried out within a computer aided design (CAD) environment ('StdQFT' toolbox) which has been developed by the authors. Some preliminary results of this work appeared in 2002.
Description: This article has been published in the journal, Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering [© PEP]. The definitive version is available at: http://dx.doi.org/10.1243/09596518JSCE305
Version: Published
DOI: 10.1243/09596518JSCE305
URI: https://dspace.lboro.ac.uk/2134/4520
ISSN: 0959-6518
Appears in Collections:Published Articles (Electronic, Electrical and Systems Engineering)
Published Articles (Control Systems Group)

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