Fuzzy Logic Guidance of Formation Flight

Kumbasar, Sarper
Tekinalp, Ozan
In this paper, fuzzy logic control method is used to control the formation flight of fixed wing aircraft in leader-follower form. A two loop control structure is used. In the inner loop, aircraft flight is controlled using the State Dependent Riccati Equation (SDRE) method. In the outer loop, fuzzy logic control approach is used to control the formation guidance. The success of the approach is demonstrated through simulations.


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Tekinalp, Ozan (2013-08-22)
A dual loop nonlinear State Dependent Riccati Equation (SDRE) control method is developed for the flight control of an unmanned aircraft. The outer loop addresses the attitude and altitude kinematics, while the inner loop handles the translational and rotational equations of motion. The control strategy utilizes a tracking control problem. The mismatch due to the SDC factorization of the inner loop is handled with a nonlinear compensator again derived from the tracking control formulation. The quadratic opt...
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Akçayöz, Eray; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2008)
In this work, an active flow control method is studied numerically by using a synthetic jet over a NACA 0015 airfoil. Unsteady, turbulent flows over the NACA 0015 airfoil are computed using a Navier-Stokes solver. The Spalart-Allmaras turbulence model is employed in all computations. Unsteady flow solutions are computed in parallel using Parallel Virtual Machine library routines in a computer cluster. The synthetic jet is implemented to the flow solver as a boundary condition. Response Surface Methodology i...
Mathematical model development of the anti torque system of a notar helicopter
Bakır, Hüseyin Murat; Yavrucuk, İlkay; Department of Aerospace Engineering (2008)
The anti-torque mechanism of a NOTAR helicopter is a complex system including vertical tail and pressurized tail boom which provides air ejection used for both circulation control around the boom and creating directed jet air at the end of the boom. This thesis targets the modeling of this mechanism and integrating it to a helicopter simulation model. Flight tests are performed on the MD 600N helicopter to verify the results. Finally, the simulation is compared with flight test data.
Measurements of dynamic stability derivatives using direct forced oscillation technique
Alemdaroglu, N; Iyigun, I; Altun, M; Quagliotti, F; Guglieri, G (2001-08-30)
The subject of the experimental investigation presented in this paper is to measure the dynamic stability derivatives of a generic combat aircraft model in the Ankara Wind Tunnel by using the direct forced oscillation technique. The model, used for the tests is the AGARD, Standard Dynamic Model (SDM). The aerodynamic loads acting on the model are measured with a five component internal strain gauge balance placed inside the oscillating model. The paper presents the experimental set-up used to create the osc...
Structured H-Infinity controller design and analysis for highly maneuverable jet aircraft
Özkan, Salih Volkan; Tekinalp, Ozan; Department of Aerospace Engineering (2022-2-10)
Robust control technique is utilized to develop flight control laws for highly maneuverable aircraft. A structured H-Infinity controller is used to optimize the gains of the proposed control algorithm. For this purpose systune algorithm available in Matlab is employed to successfully obtain the controller gains satisfying selected design requirements. Designed control laws are evaluated according to these requirements and validation of the methodology is presented.
Citation Formats
S. Kumbasar and O. Tekinalp, “Fuzzy Logic Guidance of Formation Flight,” 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55578.