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Comments on “A Revisit to the Gain and Phase Margins ofLinear Quadratic Regulators”
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
2001 (English)In: IEEE Transactions on Automatic Control, ISSN 0018-9286, E-ISSN 1558-2523, Vol. 46, no 9, p. 1508-1509Article in journal (Refereed) Published
Abstract [en]

In the above paper, an example is given, showing that the LQ controller gives an arbitrary small gain margin with respect to variations of the open-loop plant. As a remedy, a dynamic-state feedback is proposed which is claimed to give an arbitrary large gain margin. This is incorrect. In fact, the proposed dynamic state feedback controller does not even stabilize the nominal system.

Place, publisher, year, edition, pages
New York: IEEE , 2001. Vol. 46, no 9, p. 1508-1509
Keywords [en]
Linear control systems, Cascade control systems, Closed loop control systems, Polynomials, State feedback, System stability
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:hh:diva-3412DOI: 10.1109/9.948488Scopus ID: 2-s2.0-0035439811OAI: oai:DiVA.org:hh-3412DiVA, id: diva2:296798
Note
©2001 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.Available from: 2010-02-18 Created: 2009-12-01 Last updated: 2018-03-23Bibliographically approved

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Holmberg, Ulf

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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More styles
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  • de-DE
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