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 22 for “"optimal control strategy"”.
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Development of a Model and Optimal Control Strategy for the Cal Poly Central Plant and Thermal Energy Storage System
… Thermal Energy Storage for use in determining an optimal operating control strategy. The model was developed using a transient systems simulation program (TRNSYS) that includes plant performance and manufacturer data for the primary system components, which are comprised of pumps, chillers, …
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Modeling and Control of a Multibody Hinge-BargeWave Energy Converter
… by a three-body hinge-barge WEC using an optimal control strategy, which computes the optimal loads applied by the PTOs driven by the relative motion between the bodies. The optimal control is formulated in the time domain, and computes the PTO loads in a coordinated way, so that the total …
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Modeling and Control of Batch Pulsed Top-spray Fluidized bed Granulation
… computational fluid dynamic (CFD) study and control strategy development. For the experimental study, the influence variables of pulsed frequency, binder spray rate and atomization pressure of a batch top-spray fluidized bed granulation process were studied using the Box-Behnken experimental …
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A synthesis of quality and process control
An improved quality control model is suggested in this thesis. The improved quality control model is derived by treating the quality control problem as a process control problem. The quality control model is developed by formulating a process control model in terms of product quality parameters and …
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Advanced Modeling and Control Strategies for Charging Electric Vehicle Batteries
… thesis presents an advanced modeling and control strategy for charging electric vehicle (EV) batteries. The purpose of modeling the battery incorporating the optimal control mechanism is developing a fast-charging system for EVs. The thesis starts with a literature survey to find out the …
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Simulation and control of dynamic directed self-assembly of nanostructures
… is now shifting towards non-periodic structures. Control of various interaction force fields (electrostatic, Van der Waals, etc.) between the nanoparticles and external controls can result in the formation of nanostructures with desired geometry. The aim is to design the nanoparticles and the …
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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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Control of power converter for grid integration of renewable energy conversion and STATCOM systems
… integration. This thesis investigates advanced control technology for grid integration control of renewable energy sources and STATCOM systems. First, the conventional control mechanism of power converters applied in renewable energy conversion and STATCOM systems is studied. Through both …
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Real time hardware implementation of power converters for grid integration of distributed generation and statcom systems
… and security. This thesis investigates advanced control technology for grid integration of renewable energy sources and STATCOM systems by verifying them on real time hardware experiments using two different systems: d SPACE and OPAL RT. Three controls: conventional, direct vector control and the …
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Control of cooperative unmanned aerial vehicles
This thesis addresses the problems of design and control of small cooperative unmanned autonomous quadrotor aerial vehicles. A new approach is proposed, for the modeling of the system’s dynamics using linearized Piecewise AffineModels. The Piecewise Affine dynamic–models cover a large part of the …
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Modeling and optimization of energy storage system for microgrid
… of plant including system and environmental controls. The proposed model includes the circulation pumps and the HVAC system that regulates the environment of the VRB enclosure. In this paper, the VRB model is extended to include the ESS environmental controls to provide a model that provides …
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Control strategies for exothermic batch and fed-batch processes A sub-optimal strategy is developed which combines fast response with a chosen control signal safety margin. Design procedures are described and results compared with conventional control.
… considerable scope for improving the temperature control of exothermic processes. In this thesis, a sub-optimal control strategy is developed through utilizing the dynamic, simulation tool. This scheme is built around easily obtained knowledge of the system and still retains flexibility. It can be …
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Hydrodynamic excitation force estimation and forecasting for wave energy applications
… Wave Energy Converters (WECs) in large arrays or optimal control of WECs. The majority of WEC optimal control strategies require knowledge of the previous, current, and future excitation force acting on the device. However, for the WEC case, the excitation force is an unmeasurable quantity and, …
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Investigation of a heat pump reversible in an organic Rankine cycle and its application in the building sector
… the performance of the HP/ORC unit with an optimal control and with a wide range of inputs. Chapter five studies the reversible unit in the case of the building application based on advanced dynamic models. The global model combines validated sub-models: the reversible unit, the solar roof, …
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Analysis and operations in complex networked systems: From urban infrastructure to epidemics
… ii) infectious disease propagation dynamics and control in population contact networks. Under each topic, one or several studies are performed with different focuses to reveal insights on varies aspects of the real-world networked systems, and provide decision-making frameworks to operational …
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Development and evaluation of postural control models for lifting motions and balance control
… novel motion simulation model using fuzzy logic control is presented. This model was motivated by the fact that humans use linguistic terms to guide their behaviors while fuzzy logic provides mathematical representations of linguistic terms. Specifically in this model, fuzzy logic was used to …
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Theoretical modelling of temperature and rainfall inuence on Schistosoma species population dynamics
… Africa. Also, to investigate time-dependent control strategies, so as to ascertain the best cost-e ectiveness optimal control strategy for schis- tosomiasis eradication/control. In this study, a deterministic schistosomiasis climate-based model was developed using di erential equations. The …
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Experimental Study on Improving the Waterflooding Potential in Different Heavy Oil-Solvent Systems
… the voidage replacement ratio (VRR) control, etc., have been studied to take full advantage of the nature energies in heavy oil waterflooding processes. However, few researchers have directly studied the pressure control strategies to improve the waterflooding potential in heavy oil …
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Modeling CO₂ leakage from geological storage formation and reducing the associated risk
… to heterogeneity of the aquifer. We develop an optimal control strategy of the injection/extraction rates to maximize the utilization efficiency. We further propose an optimal well pattern orientation strategy. Results show that the approach nearly compensates the reduction of utilization …
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Modelling and control of an articulated underground mining vehicle
… and discussed. Lastly, two localization and control methods are given and evaluated. The first method is an open-loop nonlinear optimal control strategy with periodic position resetting and the second method is a pathtracking controller. AFRIKAANS : Automatisering van die laai-, vervoer- en …
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