Mixed parametric/unstructured LFT modelling for robust controller design

Harald Pfifer, Simon Hecker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


The paper presents a general procedure to approximate a parametric Linear Fractional Representation (LFR) with a reduced order LFR. The error resulting from a multi-dimensional model reduction step is covered by an unstructured uncertainty and the reduced order LFR is further optimized such that the norm of the required unstructured uncertainty is minimized. The effectiveness of the described method is shown on the example of a μ-synthesis controller for a parametric model of the longitudinal motion of a missile.

Original languageEnglish (US)
Title of host publicationProceedings of the 2011 American Control Conference, ACC 2011
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Print)9781457700804
StatePublished - 2011
Externally publishedYes

Publication series

NameProceedings of the American Control Conference
ISSN (Print)0743-1619


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