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 11 of 11 for “"optimal switching"”.
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Piezoelectric buckling actuators : form reduction, bidirectional control, and optimal switching
… Through the use of phase-plane analysis, an optimal switching control law is described. Prototypes of single and dual buckling actuator mechanisms are shown, and experimental performance is presented.
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ARBITRAGE STRATEGIES IN PERPETUAL FUTURES AND STOCK INDEX FUTURES
… entropy-regularized rewards, transforming the optimal switching structure into a standard control setting. An interpretable learning algorithm is developed, and a policy improvement theorem is established. Simulations and empirical results demonstrate the effectiveness of the proposed RL …
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A pure-jump market-making model for high-frequency trading
… we formulate the market maker's decisions as an optimal switching problem. Moreover, the risk of overtrading has been taken into consideration by allowing each order to have different size, and the market maker can make use of market orders, which are treated as impulse control, to get rid of …
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Real-time optimal control of autonomous switched systems
This thesis provides a real-time algorithmic optimal control framework for autonomous switched systems. Traditional optimal control approaches for autonomous switched systems are open-loop in nature. Therefore, the switching times of the system can not be adjusted or adapted when the system …
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Robust Control for Hybrid, Nonlinear Systems
… theories of stopping-time nonlinear systems and switching-control nonlinear systems. We formulate a robust optimal stopping-time control problem for a state-space nonlinear system and give the connection between various notions of lower value function for the associated game (and storage function …
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RESONANT: Reinforcement Learning Based Moving Target Defense for Detecting Credit Card Fraud
… learning (DRL), termed RESONANT to identify the optimal switching points to another ML classifier for credit card fraud detection. It identifies optimal moments to strategically switch between different ML-based defense models (i.e., classifiers) to invalidate any adversarial progress and always …
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Contraceptive histories: a comparative analysis of switching behaviour in five East African countries
… can be largely attributable to limited immediate switching of contraception following discontinuation. Despite this universal observation, the key indicators of immediate switching are largely country-specific, which suggests differences in the way family planning programmes are implemented in …
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A control theoretic approach to mitigate viral escape in HIV
… and allow preliminary control analysis for switching treatments. After introducing the biological background and models, we formulate the problem of treatment scheduling to mitigate viral escape in HIV. The goal of this therapy schedule is to minimize the total viral load for the period of …
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State-Trajectory Analysis and Control of LLC Resonant Converters
… the LLC is required to operate at a high switching frequency. Thus the driving of the synchronous rectifier (SR) poses a design challenge as well. To analyze the fast dynamic characteristic, a graphic state-plane technique has been adopted for a class of resonant converters. In this work, …
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Dynamic regulation of bacterial metabolic pathways using autonomous, pathway-independent control strategies
… are expressed, such as to build biomass before switching on growth-limiting production pathways, or accumulating intermediates to drive the reaction of a promiscuous enzyme along a certain branch. In this thesis, we propose enzyme control strategies that are independent of any biosynthetic …
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Some optimal visiting problems: from a single player to a mean-field type model
In an optimal visiting problem, we want to control a trajectory that has to pass as close as possible to a collection of target points or regions. We introduce a hybrid control-based approach for the classic problem where the trajectory can switch between a group of discrete states related to the …