Control Loss Recovery Autopilot Design for Fixed-Wing Aircraft

Akyurek S., KÜRKÇÜ B., Kaynak U., Kasnakoglu C.

6th IFAC Symposium on System Structure and Control (SSSC), İstanbul, Turkey, 22 - 24 June 2016, vol.49, pp.117-123 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 49
  • Doi Number: 10.1016/j.ifacol.2016.07.509
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.117-123
  • Keywords: Loop-shaping, loss of control, surface jam, power loss, autopilot design, numerical simulation
  • Hacettepe University Affiliated: Yes


In this paper a loop-shaping design approach is investigated for distressed fixed-wing aircraft experiencing control loss due to surface or power failure. An accurate nonlinear model of the aircraft dynamics is utilized to obtain a target aircraft behavior in the emergency situation, for which a loop-shaping controller is designed to balance performance and robustness, and to decouple different command channels. A rudder servoactuator jam scenario is presented as an example where it is seen that the autopilot recovers level flight and responds well to fly-by-wire commands from the operator. (C) 2016 IFAC (International Federation or Antomatic Control) Hosting by Elsevier Ltd. All rights reserved.