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Modern Flight Control System Design and Evaluation
Vlk, Jan ; Holzapfel, Florian (oponent) ; Rzucidlo, Pawel (oponent) ; Mathan, Santosh (oponent) ; Chudý, Peter (vedoucí práce)
This thesis addresses the research on modern methods in automatic Flight Control System design and evaluation, as seen from the perspective of state-of-the-art and future utilization on Unmanned Aerial Systems. The thesis introduces a Flight Control System design process with a special emphasis on the Model-Based Design approach. An integral part of this process is the creation of the aircraft's mathematical model employed in the flight control laws synthesis and the composition of a simulation framework for the evaluation of the automatic Flight Control System's stability and performance. The core of this thesis is aimed at flight control laws synthesis built around a unique blend of optimal and adaptive control theory. The researched flight control laws originating from the proposed design process were integrated into an experimental digital Flight Control System. The final chapter of the thesis introduces the evaluation of the designed automatic Flight Control System and is divided into three phases. The first phase contains the Robustness Evaluation, which investigates the stability and robustness of the designed control system within the frequency domain. The second phase is the controller's Performance Evaluation employing computer simulations using created mathematical models in the time domain. As for the final phase, the designed Flight Control System is integrated into an experimental aircraft platform, serving as a testbed for future Unmanned Aerial Systems, and subjected to a series of flight tests.
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Automatic Flight Control System Design for a Jet Aircraft
Krasňanský, Milan ; Vlk, Jan (oponent) ; Chudý, Peter (vedoucí práce)
This bachelor's thesis deals with the modelling of flight characteristics of a jet airplane and subsequent design and implementation of an automatic flight control system. Its goal was to implement a model of a jet airplane based on publicly available aerodynamic data of F-16 aircraft and use this model as a platform for the design and implementation of an automatic flight control system based on the non-linear dynamic inversion with a focus on controlling the pitch angle of an airplane by setting a desired value of the angle of attack. Conducted tests of the created system proved the ability of the control system to reach and maintain the desired angle of attack.
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Development of Autopilot and Flight Director Modes inside a Simulink Environment
Novák, Jiří ; Matoušek, Radomil (oponent) ; Nechvátal, Luděk (vedoucí práce)
This thesis is focused on the development of a simulation environment in Matlab/Simulink for a selected aircraft. The position and orientation of the aircraft moving in the air is described by six-degrees-of-freedom equations of motion. The system of translational, rotational and kinematic equations forms a set of nine nonlinear first order differential equations. These equations can be linearized around an equilibrium point referred to as a steady--state flight condition. The simulation environment contains a developed flight control system based on PID controllers. A basic autopilot is capable of holding pitch attitude and roll angle. Flight director modes including altitude hold, heading select, vertical speed mode, flight level change mode, altitude capture mode and navigational mode based on a nonlinear guidance law are presented. A Pareto optimality based optimization tuning process is developed to optimally tune the regulators. The simulation is graphically represented in FlightGear open source software.
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Modern Flight Control System Design and Evaluation
Vlk, Jan ; Holzapfel, Florian (oponent) ; Rzucidlo, Pawel (oponent) ; Mathan, Santosh (oponent) ; Chudý, Peter (vedoucí práce)
This thesis addresses the research on modern methods in automatic Flight Control System design and evaluation, as seen from the perspective of state-of-the-art and future utilization on Unmanned Aerial Systems. The thesis introduces a Flight Control System design process with a special emphasis on the Model-Based Design approach. An integral part of this process is the creation of the aircraft's mathematical model employed in the flight control laws synthesis and the composition of a simulation framework for the evaluation of the automatic Flight Control System's stability and performance. The core of this thesis is aimed at flight control laws synthesis built around a unique blend of optimal and adaptive control theory. The researched flight control laws originating from the proposed design process were integrated into an experimental digital Flight Control System. The final chapter of the thesis introduces the evaluation of the designed automatic Flight Control System and is divided into three phases. The first phase contains the Robustness Evaluation, which investigates the stability and robustness of the designed control system within the frequency domain. The second phase is the controller's Performance Evaluation employing computer simulations using created mathematical models in the time domain. As for the final phase, the designed Flight Control System is integrated into an experimental aircraft platform, serving as a testbed for future Unmanned Aerial Systems, and subjected to a series of flight tests.
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Development of Autopilot and Flight Director Modes inside a Simulink Environment
Novák, Jiří ; Matoušek, Radomil (oponent) ; Nechvátal, Luděk (vedoucí práce)
This thesis is focused on the development of a simulation environment in Matlab/Simulink for a selected aircraft. The position and orientation of the aircraft moving in the air is described by six-degrees-of-freedom equations of motion. The system of translational, rotational and kinematic equations forms a set of nine nonlinear first order differential equations. These equations can be linearized around an equilibrium point referred to as a steady--state flight condition. The simulation environment contains a developed flight control system based on PID controllers. A basic autopilot is capable of holding pitch attitude and roll angle. Flight director modes including altitude hold, heading select, vertical speed mode, flight level change mode, altitude capture mode and navigational mode based on a nonlinear guidance law are presented. A Pareto optimality based optimization tuning process is developed to optimally tune the regulators. The simulation is graphically represented in FlightGear open source software.
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|
|
Automatic Flight Control System Design for a Jet Aircraft
Krasňanský, Milan ; Vlk, Jan (oponent) ; Chudý, Peter (vedoucí práce)
This bachelor's thesis deals with the modelling of flight characteristics of a jet airplane and subsequent design and implementation of an automatic flight control system. Its goal was to implement a model of a jet airplane based on publicly available aerodynamic data of F-16 aircraft and use this model as a platform for the design and implementation of an automatic flight control system based on the non-linear dynamic inversion with a focus on controlling the pitch angle of an airplane by setting a desired value of the angle of attack. Conducted tests of the created system proved the ability of the control system to reach and maintain the desired angle of attack.
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