International Journal of Control Science and Engineering, no.2, pp.181-188, 2012 (Refereed Journals of Other Institutions)
In this paper, an aircraft roll control system based on autopilot operating conditions is modeled and simulated
using Matlab/Simulink. The modeling phase begins with the derivation of required mathematical model to describe the
lateral directional motion of an aircraft. Then, Linear Quadratic Regulator (LQR), Fuzzy Logic Controller (FLC) and
Self-Tuning Fuzzy Logic Controller (STFLC) are applied for controlling the roll angle of the modeled aircraft system.
Simulation results of roll controllers are presented in time domain and the results obtained with STFLC are compared with
the results of FLC and LQR. Finally, the performances of roll control systems are analysed in order to decide which control
method gives better performance with respect to the desired roll angle. According to simulation results, it is shown that
STFLC deliver better performance than FLC and LQR.