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Combining sensor monitoring and fault tolerant control to maintain flight control system functionalities

Ossmann, Daniel and Joos, Hans-Dieter (2016) Combining sensor monitoring and fault tolerant control to maintain flight control system functionalities. 20th IFAC Symposium on Automatic Control in Aerospace, 21.-25. Aug. 2016, Sherbrooke, Quebec, Canada.

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Abstract

To maintain nominal flight control system functionalities during fault scenarios, enhancements of the state-of-practise angle of attack and airspeed sensor fault accommodation strategies are presented. The strategy combines a fault detection and diagnosis (FDD) system with a robust fault tolerant control law. The FDD system allows to maintain the nominal flight control law as long as at least one angle of attack and airspeed sensor are available. The FDD system is designed using advanced nullspace computation, optimization, and signal processing techniques. For the scenario of a total airspeed measurement loss, an airspeed independent longitudinal backup control law is designed using global optimization techniques. Using this law avoids the state-of-practise switch to a direct law in which the pilot must control the Elevator positions directly. The results from an extensive industrial validation and veri�cation campaign are reported.

Item URL in elib:https://elib.dlr.de/104942/
Document Type:Conference or Workshop Item (Speech)
Title:Combining sensor monitoring and fault tolerant control to maintain flight control system functionalities
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ossmann, Danieldaniel.ossmann (at) dlr.deUNSPECIFIED
Joos, Hans-DieterDieter.Joos (at) dlr.deUNSPECIFIED
Date:25 August 2016
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:Sensor monitoring, Fault detection, Fault tolerant control, Robust control
Event Title:20th IFAC Symposium on Automatic Control in Aerospace
Event Location:Sherbrooke, Quebec, Canada
Event Type:international Conference
Event Dates:21.-25. Aug. 2016
Organizer:IFAC, International Federation of Automatic Control
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Joos, Hans-Dieter
Deposited On:14 Sep 2016 10:20
Last Modified:31 Jul 2019 20:02

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