Yazar "Kalyon, Muammer" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Öğe
    Altitude-hold flight control system design for longitudinal motion
    (İstanbul Ticaret Üniversitesi, 2021) Öz, Ahmet Hulusi; Kalyon, Muammer
    This article proposes the conventional implementation of a “Altitude-Hold Controller” for a high speed hypothetical aircraft. The static stability, which is called as Stability Augmentation System (SAS), is studied for the system. The stability conditions are analyzed and suitable controller design is developed over the longitudinal motion. The controller is designed by linearizing the longitudinal equation of motions and it is studied for performance issue. The controller design is optimized in order to get a good approximation for the overall flight system. The Root-Locus method is used to get the controller coefficients. The controller is divided into two sections which are; the inner loop that deals with the pitching motion parameters and the outer loop that deals with the altitude reference, flight-path angle on the vertical motion of the aircraft. The simulations, analysis and results are developed in MATLAB/Simulink program. The final results are discovered and expressed over the MATLAB/Simulink.
  • Küçük Resim
    Öğe
    Estimating dominant parameters of aircraft linear dynamical model via least square method
    (İstanbul Ticaret Üniversitesi, 2021) Şahin, Mehmet; Kalyon, Muammer
    Parameter estimation methods are used to create mathematical models for systems with input and output. In this article, the least squares method (LS) for aircraft is proposed. This method is used to write a realistic equation of the mathematical relationship between physical quantities that vary depending on each other. The parameters of the transfer functions formed as a result of the aircraft mathematical model were estimated with the LS method. Thus, the algorithm of the LS method was created and the results obtained in the MATLAB/Simulink program were shared. As a result of the estimated transfer functions, some aerodynamic coefficients are estimated. In addition, the Integral Square Error (ISE) table has been extracted to see the approximation of the LS method to the real data. this table is also created for transfer functions and aerodynamic parameters. Thus, the error rate of the method was observed.
  • Küçük Resim
    Öğe
    Nonlinear control of power coefficients in wind turbines
    (İstanbul Ticaret Üniversitesi, 2019) Kalyon, Muammer; Badjie, Alieu Khama
    Wind speed above rated value causes high power and generator over speed. This leads to overloading and breakdown of the generator. As a result, control is required to maintain the desired generated electrical power. Many papers use the blade pitch angle, which is highly non-linear as control input to achieve this goal. In this paper, the power coefficient is used for the first time as the control input due to its simplicity, noting that power coefficient is a linear coefficient of the rotor power. A non-linear controller called Sliding mode is used to command the power coefficient to regulate the rotor speed to the desired value. The actual pitch angle for every wind speed is determined by designing some algorithms which are used with the power coefficient from the controller. The simulation results show that this control strategy is able to regulate the generator power by setting the rotor speed to its desired value. Another non-linear controller called feedback linearization is also used to compare its results to the sliding mode controller. This is to show that other controllers can also be used. The simulation results of the two controllers are indistinguishable.