An optimisation algorithm for designing fixed-structure controllers using the QFT method

Nandakumar, R., Halikias, G. D. and Zolotas, A. (2002) An optimisation algorithm for designing fixed-structure controllers using the QFT method. In: Computer Aided Control System Design, 2002 IEEE International Symposium on, 18th - 22nd September 2002.

3969263_An_optimisation_algorithm_for_designing_fixed-structure_controllers_using_the_QFT_method/links/%5BC.16%5D%20An-Optimization-Algorithm-For-Designing-Fixed-Structure-Controllers-Using-The-QFT-Method-IEEE-ISCACSD.pdf - Whole Document
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Item Type:Conference or Workshop contribution (Paper)
Item Status:Live Archive


We propose a simple optimisation algorithm for designing fixed-structure controllers for highly-uncertain plants. 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 minimise either the asymptotic gain or the cross-over frequency of the open-loop system. Some preliminary results of this work have appeared in Zolotas et al. (1999).

Keywords:asymptotic stability, control system, synthesis, feedback optimisation, robust control, three-term control, PID control, Uncertain systems
Subjects:H Engineering > H660 Control Systems
H Engineering > H100 General Engineering
G Mathematical and Computer Sciences > G120 Applied Mathematics
Divisions:College of Science > School of Engineering
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ID Code:15922
Deposited On:01 Nov 2014 22:10

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