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 24 for “"Real Time Optimization"”.
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Real-Time Optimization for Large Scale Nonlinear Processes
Efficient numerical methods for the real-time solution of optimal control problems arising in nonlinear model predictive control (NMPC) are presented, and their contraction properties are investigated theoretically. The practical applicability of the methods is demonstrated in an experimental …
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Model free real-time optimization for vapor compression systems
… system model is available. An alternative set of optimization approaches use system measurements. This thesis focuses on one such approach, extremum seeking control, which uses performance index measurements to determine optimal system settings. Forgoing system model knowledge and relying …
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Dynamic Modeling and Model-Free Real-Time Optimization for Cold Climate Heat Pump Systems
… on model-free control strategies for real-time efficiency optimization for several configurations of cold-climate ASHP, by use of Extremum Seeking Control (ESC). By utilizing periodic dither inputs for online gradient estimation, ESC bears significant robustness against process …
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Real-Time Optimization Based Power Flow Controller for Energy Consumption and Emissions Reduction in a Parallel HEV
… depend on the energy management strategy. An optimization based power flow controller is presented in this thesis to find the appropriate power split between the Internal Combustion Engine (ICE) and the electric motor to reduce the energy consumption and emissions. However, emissions were not …
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Real-time trajectory optimization and air traffic control simulation for noise abatement approach procedures
… This thesis presents an adaptive onboard real-time optimization algorithm and an Air Traffic Control simulation model that can minimize the aircraft approach noise and meet air traffic control targets and restrictions. The adaptive real-time optimization algorithm uses dynamic programming, …
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Computational analysis of real-time convex optimization for control systems
… analysis is fundamental for certification of all real-time control software. Nevertheless, analysis of on-line optimization for control has received little attention to date. On-line software must pass rigorous standards in reliability, requiring that any embedded optimization algorithm possess …
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Real-time trajectory optimization for excavators by power maximization
… to move soil towards task oriented goals. The real-time optimization, which used methods from extremum seeking control, was implemented in simulation and then on a small scale simulation rig which validated the method. It was shown that power maximization as a strategy of trajectory adaptation …
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Optimal Energy Management of a SAGD Microgrid Participating in a Volatile Electricity Market
… net present value (NPV) by utilizing a dynamic real-time optimization (D-RTO) approach. The optimization is discretized into a moving horizon that is updated and solved at each time step. The updates are provided by an EMS forecaster using Bayesian DLM and timeseries ARIMA forecast models. The …
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Integration of Extremum Seeking and Model Predictive Control for Discrete Time Systems
This thesis considers a time-varying extremum seeking control algorithm that adjusts set-points provided to a model predictive controller for a vapour compression system. While perturbation-based extremum seeking methods have been known for some time, they suffer from slow convergence rates---a …
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Dynamic response and maneuvering strategies of a hybrid autonomous underwater vehicle in hovering
… (MPC) is a technique that consists of the real-time optimization of a nonlinear dynamic system model, with the ability to handle constraints and nonlinearities. In this work, several variations of simulated and experimental MPC-based controllers are investigated. The primary challenge in …
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Variable Precision Tandem Analog-to-Digital Converter (ADC)
… of change), in order to best follow the input in real time. It uses Flash and Successive Approximation (SAR) conversion techniques in sequence.</p> <p>As part of the design, the concept of "total real-time optimization" is explored, where any delay at all is treated as an error (Error = Delay * …
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Distributed Newton-Seeking for Resource Allocation
Real-time optimization (RTO) is a category of closed-loop process control techniques that is focused on the improvement of process performance. To develop effective strategies, models of the systems are usually required. To circumvent this issue, model-free techniques such as Extremum-seeking …
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EMG-Based Human-in-the-Loop Bayesian Optimization to Assist Hip-Centric Activities
… using surface EMG-based human-in-the-loop optimization, cutting tuning time from hours to minutes while preserving assistance quality. We show that processed EMG provides a reliable objective for rapid personalization, enabling convergence within typical clinical sessions. The research …
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Synthesis of Local Thermo-Physical Models Using Genetic Programming
… complement them to accelerate computation for real-time optimization and control. Human-centered strategies for development of these models are based on approximation of theoretical models. Genetic Programming (GP) system can extract knowledge from the given data in the form of symbolic …
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Real-time operations planning and control of high-frequency transit
… adopting data collection devices that enable real-time monitoring of vehicle locations and demand, but existing models and current practice limit the utility of this information. This research develops new concepts, frameworks, and models for real-time optimization of operations, utilizing …
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Automated microreactor system for reaction development and online optimization of chemical processes
… efficiency and the accuracy of these reaction optimization investigations through the use of an automated microreactor system. Previous studies have illustrated the benefits of silicon microreactors for the study of chemical reactions. Such advantages include the small reactor volume and the …
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Evaluating the Impact of GPU Frequency Tuning and Power Capping on Performance and Efficiency
… efficiency, especially for architecture-specific optimizations. Additionally, the ex- periments demonstrate that the Ampere architecture (A100) offers more precise control over power-performance trade-offs compared to its predecessors, highlighting the evolution of power management capabilities in …
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Toward time-predictable execution of multi-task real-time systems
Guaranteeing time-predictable execution in real-time systems involves the management of not only processors but also other supportive components such as cache memory, network on chip (NoC), memory controllers. These three components are designed to improve the system computational throughput …
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Quality of service optimization of multimedia traffic in mobile networks
… data, image transmission, video, as well as multimedia services consisting of a combination of these. With the air interface being the bottleneck in mobile networks, recent enhancing technologies such as the High Speed Downlink Packet Access (HSDPA), incorporate major changes to the radio access …
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Real-Time and Data-Driven Operation Optimization and Knowledge Discovery for an Enterprise Information System
… </p><p>This thesis research is focused on real-time optimization and knowledge discovery that addresses workflow optimization, resource allocation, as well as data-driven predictions of process-execution times, order fulfillment, and enterprise service-level performance. In contrast to …
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