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Fault detection on an aircraft and development of a contingency control strategy
2008 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this work the possibility of developing a contingency control strategy for certain faults in a UAV without using additional hardware is studied. First, controllers for achieving basic flying regimens are determined, that combined with a nonlinear model of the UAV establish a realistic simulation platform. Then, the problem of detection and identification of faults in the ailerons and rudder of the aircraft is tackled. The unknown input observer is used in a proposed variation of the dedicated observer. Finally a contingency system that reconfigures the controller in the case of a fault is developed. Under computer simulation, the system proved to successfully detect and identify usual faults in aircraft actuators under nominal flight conditions. Moreover, the reconfiguration of the controllers allows the UAV to perform basic maneuvers like regaining a straight level flight and perform a turn even in the presence of severe faults.

Place, publisher, year, edition, pages
2008.
Keyword [en]
Technology, FDI, fault tolerant systems, actuator failures, UAV, unknown, input observer
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-49429ISRN: LTU-PB-EX--08/075--SELocal ID: 6c2c03b8-d712-4c12-9284-bda2ea831fa0OAI: oai:DiVA.org:ltu-49429DiVA: diva2:1022776
Subject / course
Student thesis, at least 30 credits
Educational program
Space Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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Type fulltextMimetype application/pdf

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf