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Defragilization in optimal design and its application to fixed structure LQ controller design
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
2001 (English)In: IEEE Transactions on Control Systems Technology, ISSN 1063-6536, E-ISSN 1558-0865, Vol. 9, no 4, p. 590-598Article in journal (Refereed) Published
Abstract [en]

In this work, we present a general methodology to address the recently debated fragility issue in optimization-based modern control systems design. Based on this methodology we have developed a defragilization procedure which is applied to fixed structure linear quadratic (LQ) control design. Issues regarding computational efficiency of the procedure and the relationship between controller fragility and controller parameterization are discussed via two examples taken from practical applications. The first example is based on a rotary cement kiln control application and the latter example on a wing flutter control application. The procedure could also be used in design problems with specifications which are related to controller nonfragility requirements, e.g., so as to allow some degree of controller online tuning.

Place, publisher, year, edition, pages
2001. Vol. 9, no 4, p. 590-598
National Category
Control Engineering
Research subject
Control Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-5433DOI: 10.1109/87.930969Local ID: 3882f680-91fa-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-5433DiVA, id: diva2:978307
Note

Validerad; 2001; 20061222 (ysko)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-02-06Bibliographically approved

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fulltext(181 kB)15 downloads
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