Authors : Labane Chrif, Zemalache Meguenni Kadda and Laouer Mohammed
Abstract: Today’s aircraft designs rely heavily on automatic control system to monitor and control many of aircraft’s subsystem. The development of this research is to model a pitch, roll and sideslip controller based on design an autopilot that controls the pitch of an aircraft. The Linear Quadratic Controller is developed for controlling the pitch angle, roll angle and sideslip angle of an aircraft system. Simulation results for the response of pitch roll and sideslip controller are presented in time domain. Finally, the performances of pitch control systems are investigated and analyzed based on common criteria of impulse response in order to identify which control strategy delivers better performance with respect to the desired pitch angle. It is found from simulation, LQR controller give the best performance. In this article, we apply the linear observer without physical sensor to control the pitch angle of an aircraft B747 in which external reactions are done. A linear observer constructs to consolidate the angles of the movements of the aircraft in the mode of the longitudinal and lateral flight. This linear observer is based on the techniques of pole placement has been shown by the results of simulation.
Labane Chrif, Zemalache Meguenni Kadda and Laouer Mohammed, 2020. LQR Controller and Optimal Estimation-Observer Design Applied for Pitch Aircraft B747. International Journal of Signal System Control and Engineering Application, 13: 53-58.