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 12 of 12 for “"Bang-bang control"”.
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Towards qubit noise spectroscopy by quantum bang-bang control
Quantum bang-bang control is a method of suppressing decoherence in qubits [VKL99, VL98]. To date, mathematically rigorous treatments of quantum bang-bang control offered little intuition. To complement existing approaches and to seek better understanding, I present intuitive pictures to think …
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Study of spray-cooling control for maintaining metallurgical length or surface temperature during speed drop for steel continuous casting
… variables requiring a proper real-time control to meet product quality and operational safety demands. The main focus of the control methods currently used in the steel industry is maintaining steel surface temperature. Most of these control methods are open-loop. The main reason is that …
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Development of a Microscopic Emission Modeling Framework for On-Road Vehicles
… shortcomings, namely; they either produce a bang-bang control system because they use a linear fuel consumption versus power model or they cannot be calibrated using publicly available data and thus require expensive laboratory or field data collection. Consequently, this dissertation …
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Predictive and adaptive extremal control
The time-optimal predictive control strategy for second order relay or bang-bang control systems is investigated along with modifications of this strategy for third order systems. One basis of this strategy is the utilization of a model, a replica of the plant, run in a fast-time mode so as to …
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APPLICATION OF ARTIFICIAL INTELLIGENCE TO STATIC VAR SOURCE CONTROL FOR IMPROVING POWER SYSTEM DAMPING
… of system oscillations from the conventional control of SVC are usually small. Supplementary control is resorted to achieve significant damping. Two kinds of Fuzzy Logic Control (FLC) based SVC controllers are proposed. The first kind of FLC mechanism is based on the power system oscillation …
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Hypersonic flight strategies for supersonic retropropulsion at Mars
… retropropulsion systems at Mars. Optimal control techniques are used to determine hypersonic bank-angle profiles that achieve favorable supersonic retroprolusion ignition states. Bang-bang control in the hypersonic flight regime is shown to be optimal for targeting specific state values at …
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Sensor Craft Control Using Drone Craft with Coulomb Propulsion System
… no propellant. It is suitable to close formation control on the order of dozens of meters. The Coulomb forces are internal forces of the formation and they influence all charged spacecraft at the same time. Highly nonlinear and strongly coupled equations of motion of Coulomb formation makes …
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Hydrodynamics of magnet-coil actuated robotic fish
… identified that the discrete tail beat from the bang bang control creates vortex pairs at each start or stop motion of the caudal fin. Moreover, the wake structure from the shark Aquabot tail beat creates a wake structure similar to live dogfish sharks. Since the design of the Scuba Fish allowed …
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Variable Strategy Model of the Human Operator
Human operators often employ discontinuous or "bang-bang" control strategies when performing large-amplitude acquisition tasks. The current study applies Variable Structure Control (VSC) techniques to model human operator behavior during acquisition tasks. The result is a coupled, multi-input model …
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Modeling Diesel Bus Fuel Consumption and Dynamically Optimizing Bus Scheduling Efficiency
… the model parameters and also produce a bang-bang control system (optimum control entails maximum throttle and braking input). This thesis extends the Virginia Tech Comprehensive Power-Based Fuel Consumption Model (VT-CPFM) to model diesel buses and develops an application for it. A …
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Maximum residence time and reconnaissance of asteroids orbiting the sun within 5 au at less than 10 deg of inclination
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Optimal control methodologies for the optimisation of maintenance scheduling and production in processes using decaying catalysts
In this thesis, optimal control methodologies are developed for solving problems involving the optimisation of maintenance scheduling and production in processes using decaying catalysts. Previously, such problems were solved using a category of methods which involve making decisions of discrete as …