Robust Flare Control Design Using Structured H∞ Synthesis: a Civilian Aircraft Landing Challenge

D. Navarro-Tapia, P. Simplicio, A. Iannelli, A. Marcos

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

19 Citations (Scopus)
295 Downloads (Pure)


This paper addresses the flare design of a civilian aircraft within the benchmark proposed by Onera and Airbus to enhanced the robustness and capabilities of autoland control systems. The flare segment must perform soft landings within a desired range of touchdown points on the runway in the presence of parametric uncertainties, strong wind turbulences and ground effects. In this paper, a structured H∞ approach using the standard H∞ formulation is explored for the vertical speed controller. In addition, some strategies to improve the robustness of the autoland control system against some critical parameters are described. Finally, the longitudinal performance and robustness of the control system are examined through nonlinear nominal simulations and Monte-Carlo analysis.
Original languageEnglish
Title of host publicationProceedings of the 20th IFAC World Congress, 9 July 2017 - 14 July 2017
PublisherElsevier Inc.
Number of pages6
Publication statusE-pub ahead of print - 18 Oct 2017
Event20th IFAC World Congress - Toulouse, France
Duration: 9 Jul 201714 Jul 2017

Publication series

NameIFAC Papers Online
ISSN (Print)1474-6670
ISSN (Electronic)2405-8963


Conference20th IFAC World Congress
Internet address


  • LFT modeling
  • robust performance
  • sensitivity analysis
  • aircraft landing challange


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