Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"flight controllers"”.
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Safety Assurance of Non-Deterministic Flight Controllers in Aircraft Applications
… The stability proof of direct adaptive controllers require that the plant being controlled has no unstable transmission zeros and has a nonzero high frequency gain. Because most conventional aircraft do not readily meet these requirements, a process known as sensor blending was used. …
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Implementation of a Trusted I/O Processor on a Nascent SoC-FPGA Based Flight Controller for Unmanned Aerial Systems
… a novel solution to enhance the security of the flight controller thereby contributing to a secure and robust UAS. The proposed solution begins by introducing a new technology in the domain of flight controllers and how it can be leveraged to overcome the limitations of current flight …
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Design and control of a compact aerial manipulation system with a Delta-type parallel robot
… addressed with novel mechanical features, modern flight controllers, and optimal trajectory generation. They are primarily designed for versatile indoor pick-and-place tasks where the characteristics of the proposed solution introduce useful kinematic properties. We explore these traits to address …
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Aerial manipulation for indoor applications
… or tight corners, and (ii) achieving stable flight when carrying payloads of unknown mass in the presence of uncertainties. While aerial manipulation has been researched to some extent, few efforts have been made to address both of these challenges simultaneously. First, the dynamics of the …
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Simulating Apollo: Flight Simulation Technology 1945-1975
This dissertation examines how flight simulation technology rapidly evolved in the post-World War II period, enabling new regimes of aircraft and missile flight, and eventually becoming “the very heart and soul of the NASA system” during the Apollo program. At the intersection of automatic control …
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Modeling and Control of Dual-Motored Tail-Sitting Flying Wing Using a Fuzzy Logic Pid Controller
… before transitioning to forward, fixed-wing flight. Current flight controllers used in operation on hybrid VTOL aircraft rely on a control law state machine where given a pre-identified aircraft state, the controller enters a transitioning maneuver that takes the aircraft from a VTOL to fixed …
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Evaluating Runtime Monitoring for Reinforcement Learning-Based Flight Control
<p>Ensuring safety in adaptive flight controls systems is an ongoing challenge in aviation, especially as advancements in artificial intelligence and machine learning (AI/ML) trend upwards. Reinforcement learning is becoming more common in aerospace applications due to the ability to improve these …
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Modeling of a Small-Scale Remote Controllable Helicopter for Simulation and Control Development
… craft in the latter competition. Commercial flight controllers were used in both competitions in order to familiarize team members with this technology. The next step in research at VT focuses on developing an experimental rotorcraft platform to be used for control algorithm testing and …
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Agile flight control techniques for a fixed-wing aircraft
… objectives, the need for agility controlled flight becomes more of a necessity. The ability to navigate through constrained environments as well as quickly maneuver to each mission target is essential. Currently, individual vehicles are developed with a particular mission objective, whether …
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Deep Reinforcement Learning for Multirotor Flight Control: A Comparative Study of Sim-to-Real Training and Real-World Performance
… Deep Reinforcement Learning (DRL) for low-level flight control of multirotor unmanned aerial vehicles (UAVs), focusing on factors that most influence sim-to-real policy transfer. Using the Proximal Policy Optimization (PPO) algorithm, extensive ablation studies evaluated the effects of domain …
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ENABLING THE TEST AND EVALUATION OF AUTONOMOUS FUNCTIONS THROUGH STANDARDIZATION OF UAS INTEGRATION
… from laboratory environments toreal-world flight testing remains limited by regulatory constraints, hardware compatibility challenges, and the absence of standardized interfaces between autonomy software and flight control systems. These limitations are particularly significant for research …
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On Integral Quadratic Constraint Theory and Robust Control of Unmanned Aircraft Systems
… certification of unmanned aircraft system (UAS) flight controllers. We develop two thrusts to this goal: (1) the validation and improvement of an uncertain UAS framework based on integral quadratic constraint (IQC) theory and (2) the development of novel IQC theorems which allow the analysis of …
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Guidance, navigation and control of a small, unmanned blended wing body aircraft
… these research areas make use of off-the-shelf flight controllers, but these are not always the most appropriate foundations for more advanced work as they are inherently sluggish so as to be broadly applicable to a variety of airframes. Subsequently, the Skywalker X8 airframe was modelled, …