Title :
Two time-scale dynamic missile autopilot based on quadratic observer
Author :
Devaud, E. ; Siguerdidjane, H.
Author_Institution :
Service Autom., Ecole Super. d´Electricite, Gif-sur-Yvette, France
fDate :
Aug. 31 1999-Sept. 3 1999
Abstract :
In this paper, we are interested in missile autopilot design. Our objective is to seek the approaches which significantly enhance the ability of a control engineer to deal with practical nonlinear control problem. For this purpose, two nonlinear methods are considered: "approximate feedback" and "approximate dynamic feedback" with two time-scale separation. Both methodologies are applied in order to overcome the difficulties caused by the non minimum phase phenomenon of the missile. For the sake of realism, the implementation of our controller includes a nonlinear observer. Simulation results, as well as low complexity of the control law are shown to be better by employing the second method.
Keywords :
control system synthesis; feedback; missile control; nonlinear control systems; observers; approximate dynamic feedback method; approximate feedback method; control law complexity; missile autopilot design; missile nonminimum phase phenomenon; nonlinear control problem; quadratic observer; time-scale dynamic missile autopilot; time-scale separation; Acceleration; Actuators; Aerodynamics; Mathematical model; Missiles; Observers; Robustness; Nonlinear control; approximate feedback linearization; autopilot; missile;
Conference_Titel :
Control Conference (ECC), 1999 European
Conference_Location :
Karlsruhe
Print_ISBN :
978-3-9524173-5-5