DocumentCode
486775
Title
Quantitative Feedback Theory (QFT) and Robust Control
Author
Doyle, John C.
Author_Institution
Honeywell SRC and Caltech
fYear
1986
fDate
18-20 June 1986
Firstpage
1691
Lastpage
1698
Abstract
QFT, a theory developed by Horowitz [H3], is claimed by its advocates to provide a complete and general treatment of feedback design for highly uncertain multi-input-output (MIMO) systems. This paper reviews QFT and shows that while the philosophy behind QFT is attractive, the claims for the theory are unjustified. In particular, counterexamples are given for the main theorem of QFT on which the claims are based. This is in spite of the severe assumptions (no rhp zeros and fixed relative degree) that QFT requires on the plant model.
Keywords
Bandwidth; Control systems; Control theory; Force feedback; Frequency response; Hydrogen; Noise level; Phase noise; Robust control; Uncertainty;
fLanguage
English
Publisher
ieee
Conference_Titel
American Control Conference, 1986
Conference_Location
Seattle, WA, USA
Type
conf
Filename
4789202
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