Robust Nonlinear Control of a Jet Tail-sitter UAV in Hovering Flight Phase

Please enable javascript in your browser.

Sarafraz, Yasin | 2010

579 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40635 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Saghafi, Fariborz
Abstract:
In this thesis, the theory of robust control is applied to design a controller for the longitudinal dynamics of a tail-sitter jet engine unmanned aerial vehicle. The engine thrust deflection is considered as the input controller of the system. The aircraft dynamical model is developed based on the assumption of no aerodynamic loads in low speed flight associated with the hovering condition. The controller is primarily designed using both classical and modern control techniques. Then and synthesis approaches are applied to design the robust controller. The results obtained from different approaches are compared. It is shown that the robust controller techniques are more stable and robust against uncertainties and servo saturation than the other techniques in this application
Keywords:
Robust Control ; Unmanned Aircrafts ; UNMANNED AIRCRAFTS ; Hover Flight

No TOC