Longitudinal and lateral UAV fixed-wing Robust Controller with Optimal Estimation-Kalman Filter

Rakotoarimanana Johary Anodith, Ratsimba Mamy Nirina, Ramafiarisona Hajasoa Malalatiana


This paper aim is to present a comparative study between Linear Quadratic Regulator (LQR), Linear Quadratic Gaussian (LQG) and nonlinear controllers for pitch control of an Aircraft. Due to a good stability margin and strong robustness LQR has been selected. LQG was chosen because is able to overcome external disturbances. Kalman Filter controller was also introduced to the Aircraft flight control. Further, we designed an autopilot that controls the pitch angle of the Aicraft. In the end, the control laws are simulated in Matlab/Simulink. The results obtained are compared to see which method is faster, more reliable and more robust.


UAV, Robust COntrol , LQR, LQG, Kalman Filter

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Yash Manian, A Paper Review on Aircraft Control using LQR and LQG Controllers with Optimal Estimation-Kalman Filter Design, November 2016

Robert C. Nelson.1998. Flight Stability and Automatic Control. University of Notre Dame.

Ranjan Vepa, Flight Dynamics, Simulation, and Control of Aircraft: For Rigid and Flexible Aircraft.CRC Press, 2023

Wong, K.C, 2006, UAV Design Activities in a University Environment.. University of Sydney.

Da-Wei Gu Petko H. Petkov Mihail M. Konstantinov.2013. Robust Control Design with MATLAB

Andrew J. Keane, Andras Sobester, James P. Scanlan, Small Unmanned Fixed-Wing Aircraft Design. A Practical Approach - Wiley.2017

Reed Siefert Christiansen (2004). Design of an Autopilot for Small Unmanned Aerial Vehicle Brigham Young University.

R.Vepa, Nonlinear Control of Robots and Unmanned Aerial Vehicles,CRC Press, 2017.

R. M. Murray Control and Dynamical Systems. California Institute of Technology, 11 January 2006

DOI: http://dx.doi.org/10.52155/ijpsat.v43.2.6054


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