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 20 of 43 for “"Hardware-In-The-Loop (HIL)"”.
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Autonomous landing system for a UAV
This thesis is part of an ongoing research conducted at the Naval Postgraduate School to achieve the autonomous shipboard landing of Unmanned Aerial Vehicles (UAV). Two main problems are addressed in this thesis. The first is to establish communication between the UAV's ground station and the …
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Fault tolerant control for an electric power steering system
Electric power steering (EPS) systems are rapidly replacing existing traditional hydraulic power steering systems due to fuel and cost savings. The reliability of a column mounted EPS is improved by adding an alternate control scheme that is tolerant to a torque sensor failure (FTC). To accomplish …
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Computer modeling of captive-carry missile simulator experiments
The increasing number, diversity and sophistication of anti-ship cruise missiles around the world in the past thirty years have led to sophisticated countermeasures. The Naval Research Laboratory has developed hardware in the loop (HIL) missile simulator technology to assess the effectiveness of …
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Advancements in resonant and current source gate driving techniques for fast switching Wide Band Gap (WBG) Metal Oxide Field Effect Transistors (MOSFETs)
Traditional methods for driving the Metal Oxide Field Effect Transistor, like the Voltage Source Gate Driver (VSGD), prove to be inefficient for high-frequency operation, especially in applications where Wide-Bandgap devices are used. This is because of their losses and poor control over the …
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Progetto e realizzazione del sistema di gestione autonoma del volo e controllo in remoto per un velivolo UAV ad ala rotante
This PhD thesis presents the results, achieved at the Aerospace Engineering Department Laboratories of the University of Bologna, concerning the development of a small scale Rotary wing UAVs (RUAVs). In the first part of the work, a mission simulation environment for rotary wing UAVs was developed, …
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Overcoming electro-thermal barriers to achieve extreme performance power conversion for more electric aircraft
The National Aeronautics and Space Administration (NASA), in addition to an increasing number of privately funded ventures, has demonstrated growing interest in more electric aircraft (MEA) - flight vehicles where propulsion is partially or totally supplied by electric motors. While hybrid or …
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Beyond Visual Line of Sight Drone Simulator with User-defined Risk Layers
As Beyond Visual Line of Sight (BVLOS) operations become increasingly prevalent across a range of UAV applications, the need for reliable tools to support safe mission planning and dynamic risk assessment is growing. This work introduces a web-based simulation framework for BVLOS flight planning …
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Nonlinear Controller Design and Implementation for a Magnetic Levitation System
<p>In this study, an approach is presented to nonlinear control of a magnetic levitation system using artificial neural networks (ANNs). Two neural networks, the multi-layer perceptron (MLP) and the single multiplicative neuron (SMN), are investigated in this work. A novel form of ANN, namely, …
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Electric-drive vehicle emulation using advanced test bench
<p>"Vehicle electrification is considered to be the most promising approach toward addressing the concerns on climate change, sustainability, and rapid depletion of fossil fuel resources. As a result electric-drive vehicle (EDV) technology is becoming the subject of many research studies, from …
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UAV Formation Flight Utilizing a Low Cost, Open Source Configuration
<p>The control of multiple unmanned aerial vehicles (UAVs) in a swarm or cooperative team scenario has been a topic of great interest for well over a decade, growing steadily with the advancements in UAV technologies. In the academic community, a majority of the studies conducted rely on simulation …
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Developing a HIL-Based Software Platform for Testing Electric and Hybrid Vehicle Powertrains
<p>The objective of this thesis is to present a dynamometer test stand with hardware in the loop (HIL) testing capabilities for the evaluation of electric and hybrid vehicle powertrains under realistic driving conditions. The traction inverter and dc/dc converter are two crucial subsystems of the …
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Dynamic modeling and hardware in the loop testing of chemical processes
This thesis presents a framework for hardware-in-the-loop (HIL) testing of chemical plants. HIL testing is a widespread tool used in industry and academia to bridge the gap between computer simulations and physical experimentation. It provides many advantages to the standard development path of …
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Modeling and Control of a Six-Switch Single-Phase Inverter
… High expectations coupled with extreme cost cutting to compete with traditional technologies make converter design difficult. As power electronics mature more opportunities arise for entry into this lucrative area. An excellent understanding of converter dynamics is crucial in producing a well …
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GNSS-based Spacecraft Formation Flying Simulation and Ionospheric Remote Sensing Applications
The Global Navigation Satellite System (GNSS) is significantly advantageous to absolute and relative navigation for spacecraft formation flying. Ionospheric remote sensing, such as Total Electron Content (TEC) measurements or ionospheric irregularity studies are important potential Low Earth Orbit …
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Develop a Supercapacitor Real Time Model for PHIL Simulation
… cells and fuel cells, can rarely meet all of the dynamic behavior of variable loads, which results in load performance limitations. Therefore, energy storage devices, like batteries and supercapacitors, are introduced into the system to ensure quality power is provided under a wide range of …
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Influence of Architecture Design on the Performance and Fuel Efficiency of Hydraulic Hybrid Transmissions
… effective alternative to electric hybrids for increasing the fuel efficiency of on-road vehicles. To further the state-of-the-art this work investigates how architecture design influences the performance, fuel efficiency, and controllability of hydraulic hybrid transmissions. To that end a …
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Improved qualification and algorithms for illinisat-2 attitude determination and control
The University of Illinois has developed the IlliniSat-2 CubeSat bus, a generic scalable and modular design, utilizing commercially available off the shelf (COTS) parts. The Attitude Determination and Control System (ADCS) of the bus is purely magnetic, relying on magnetometers for determination …
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Análise de estabilidade para inversores LCL conectados à rede elétrica baseada em expressões analíticas e estimativas de impedâncias no domínio síncrono DQ
The diversification in the energy matrix has been driving the emergence of new forms of electricity generation, often integrated into the grid through the inverter. The control of this device is usually designed without considering the impact of the connection with the grid. One approach to assess …
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Laboratory implementation of unified power flow controller hardware-in-loop simulation
<p>"One of the most promising network controllers for the bulk power system is the family of power electronics-based controllers, known as "flexible AC transmission system" (FACTS) devices. FACTS devices work by modifying power flow in individual lines of the power grid, maintaining voltage …
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A New Fuzzy Based Stability Index Using Predictive Vehicle Modeling and GPS Data
The use of global positioning systems, or GPS, as a means of logistical organization for fleet vehicles has become more widespread in recent years. The system has the ability to track vehicle location, report on diagnostic trouble codes, and keep tabs on maintenance schedules. This helps to improve …
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