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Advanced Uncertainty Modeling and Robustness Analysis for the Basic Flight Control System of a Modern Jet Trainer

Herrnberger, M. und Heller, M. und Paul, R. und Hecker, Simon und Sachs, G. (2007) Advanced Uncertainty Modeling and Robustness Analysis for the Basic Flight Control System of a Modern Jet Trainer. In: Proceedings of AIAA Guidance, Navigation and Control Conference. AIAA 2007, South Carolina, USA.

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[Abstract] Due to the continuously increasing design requirements on modern aircraft the robustness properties of their flight control systems against multiple model uncertainty becomes a more and more important issue for flight control system certification and flight clearance, particulary in the case of an unstabel aerodynamic basic design. Most classical approches (like stability margins in the Nichols Chart) only provide incomplete information about the qualitative and quantitative degree of robustness. Therefore, an innovative approach for robustness analysis of the primary control laws of a modern jet trainer will be presented here which uses the structured singular value (SSV) and a physically motivated parametric uncertainty model. The methodology is applied to both the longitudinal and lateral basic controller and shows a direct and exact way from the definition of parametric uncertainties to an uncertain system model suitable for -analysis. Particularly, the introduction of a trim point uncertainty emphasizes the davanced character of this analysis method by incorporating the dependence of the control loop parameters (plant and controller gains) on the current trim point into the uncertainty model. Consequently the analysis of the controller can be accomplished for entire regions of the flight envelope in a single robustness test. Therefore, the proposed approach demonstrates the possibility of substituting the conventional proceedures for proving controller robustness by a more efficient methodology.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Advanced Uncertainty Modeling and Robustness Analysis for the Basic Flight Control System of a Modern Jet Trainer
AutorenInstitution oder E-Mail-Adresse der Autoren
Herrnberger, M.Technische Universität München, Munich, Germany
Heller, M.EADS Military Air Systems, Munich, Germany
Paul, R.EADS Military Air Systems, Munich, Germany
Sachs, G.Technische Universität München, Munich, Germany
Erschienen in:Proceedings of AIAA Guidance, Navigation and Control Conference
Referierte Publikation:Ja
In ISI Web of Science:Nein
Veranstaltungstitel:AIAA 2007
Veranstaltungsort:South Carolina, USA
Veranstaltungsart:internationale Konferenz
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Systeme & Kabine
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Robotik und Mechatronik > Systemdynamik und Regelungstechnik (war Entwurfsorientierte Regelungstechnik)
Hinterlegt von: Monika Klauer
Hinterlegt am:12 Sep 2007
Letzte Änderung:12 Dez 2013 20:27

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