Hecker, Simon and Varga, Andras and Magni, Jean-Francios (2004) Enhanced LFR-toolbox for MATLAB and LFT-based gain scheduling. In: Proc. of ODAS 2004, pp. 80-89. 6th ONERA-DLR Aerospace Symposium, 2004-06-22 - 2004-06-23, Berlin (Germany).
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Abstract
We describe recent developments and enhancements of the LFR-Toolbox for MATLAB for building LFT-based uncertainty models and for LFT-based gain scheduling. A major development is the new LFT-object definition supporting a large class of uncertainty descriptions: continuous- and discrete-time uncertain models, regular and singular parametric expressions, more general uncertainty blocks (nonlinear, time-varying, etc.). By associating names to uncertainty blocks the reusability of generated LFT-models and the user friendliness of manipulation of LFR-descriptions have been highly increased. Significant enhancements of the computational efficiency and of numerical accuracy have been achieved by employing efficient and numerically robust Fortran implementations of order reduction tools via mex-function interfaces. The new enhancements in conjunction with improved symbolical preprocessing lead generally to a faster generation of LFT-models with significantly lower orders. Scheduled gains can be viewed as LFT-objects. Two techniques for designing such gains are presented. Analysis tools are also considered.
Item URL in elib: | https://elib.dlr.de/12064/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Paper) | ||||||||||||
Additional Information: | LIDO-Berichtsjahr=2004, | ||||||||||||
Title: | Enhanced LFR-toolbox for MATLAB and LFT-based gain scheduling | ||||||||||||
Authors: |
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Date: | June 2004 | ||||||||||||
Journal or Publication Title: | Proc. of ODAS 2004 | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Page Range: | pp. 80-89 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | linear fractional transformation(LFT), scheduled control, MATLAB toolbox | ||||||||||||
Event Title: | 6th ONERA-DLR Aerospace Symposium | ||||||||||||
Event Location: | Berlin (Germany) | ||||||||||||
Event Type: | Other | ||||||||||||
Event Dates: | 2004-06-22 - 2004-06-23 | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Aeronautics | ||||||||||||
HGF - Program Themes: | Aircraft Research (old) | ||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||
DLR - Research theme (Project): | L - Flexible Aircraft (old) | ||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||
Institutes and Institutions: | Institute of Robotics and Mechatronics (until 2012) > System Dynamics and Control (former Control Design Engineering) | ||||||||||||
Deposited By: | DLR-Beauftragter, elib | ||||||||||||
Deposited On: | 31 Jan 2006 | ||||||||||||
Last Modified: | 31 Jul 2019 19:15 |
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