Title :
Tracking control based on extended observer for an uncertain VTOL aircraft
Author :
Zhang, Ruifeng ; Cai, Kai-Yuan
Author_Institution :
Dept. of Autom. Control, Beijing Univ. of Aeronaut. & Astronaut., Beijing, China
Abstract :
This paper presents a nonlinear output-feedback control method to force an uncertain vertical take-off and landing (VTOL) aircraft to asymptotically track a given reference trajectory. The control development is based on an extended observer. The designed observer with augmented structure can not only approximate universally the uncertainties, but also estimate the unknown states. Moreover, two low-dimensional controllers are designed separately to stabilize the two decomposed flight dynamics, and make the overall closed-loop system stable. The theoretical results are confirmed by simulations.
Keywords :
aerospace control; aircraft; feedback; observers; position control; uncertain systems; VTOL; augmented structure; closed loop system; control development; extended observer; flight dynamics; nonlinear output feedback control method; reference trajectory; tracking control; uncertain VTOL aircraft; vertical takeoff and landing; Aerospace control; Aircraft; Atmospheric modeling; Force; Mathematical model; Observers; Uncertainty; extended observer; output-feedback control; vertical take-off and landing aircraft;
Conference_Titel :
Control and Decision Conference (CCDC), 2011 Chinese
Conference_Location :
Mianyang
Print_ISBN :
978-1-4244-8737-0
DOI :
10.1109/CCDC.2011.5968699
