@article{MAKHILLIJSSCEA202013328782,
    title = {LQR Controller and Optimal Estimation-Observer Design Applied for Pitch Aircraft B747},
    journal = {International Journal of System Signal Control and Engineering Application},
    volume = {13},
    number = {3},
    pages = {53-58},
    year = {2020},
    issn = {1997-5422},
    doi = {ijssceapp.2020.53.58},
    url = {https://makhillpublications.co/view-article.php?issn=1997-5422&doi=ijssceapp.2020.53.58},
    author = {Labane,Laouer and},
    keywords = {flight control,aircraft,longitudinal stability,LQR control,Aircraft motion,observer design,control design using pole placement.},
    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.}
    }