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Flight Control Law Design for a Civil Aircraft using Robust Dynamic Inversion

Bennani, S. and Looye, G. (1998) Flight Control Law Design for a Civil Aircraft using Robust Dynamic Inversion. IEEE/SMC-CESA98, Tunesien, April 1998.

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Abstract

A Robust Dynamic Inversion (RDI) flight control law is designed for a large civil aircraft. Classical Dynamic Inversion (CDI) consists of a nonlinear part that linearizes the nominal system dynamics, and a linear part, basically PID control, that imposes the desired closed-loop dynamics. However, CDI controllers have very poor robustness properties since they rely on exact availability of the system dynamics. It is well-known that within the Structured Singular Value (SSV), or µ-framework one can explicitly deal with systems subject to uncertainties. This holds for both, the analysis as well as for the synthesis problem. It is shown that µ-synthesis in combination with Dynamic Inversion (DI) provides robust control solutions that are also gain-scheduled. We first design a CDI controller. The exact robustness deterioration is quantified by a parameter sensitivity study using µ-analysis and nonlinear simulations. Next, an RDI controller is designed. The achieved robustness improvements are demonstrated using µ-analysis and nonlinear simulations.

Item URL in elib:https://elib.dlr.de/3457/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Flight Control Law Design for a Civil Aircraft using Robust Dynamic Inversion
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bennani, S.Delft University of TechnologyUNSPECIFIED
Looye, G.UNSPECIFIEDUNSPECIFIED
Date:1998
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:1
Page Range:pp. 998-1004
Status:Published
Keywords:flight control law design, nonlinear control, dynamic inversion,
Event Title:IEEE/SMC-CESA98, Tunesien, April 1998
Organizer:CESA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics (until 2012) > Institut für Robotik und Systemdynamik
Deposited By: DLR-Beauftragter, elib
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 16:26

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