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 56 for “"Systems control"”.
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Hybrid System of Systems Control : the TOKAMAK scenario
The basic definition of System-of-Systems (SoS) is that of a large-scale integration of many independent, self-contained systems having the common aim of satisfying a global need. Under this perspective, lots of systems of systems can be found in several fields where a common final goal drives …
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Networked Predictive Control Systems: Control Scheme and Robust Stability
Networked predictive control is a new research method for Networked Control Systems (NCS), which is able to handle network-induced problems such as time-delay, data dropouts, packets disorders, etc. while stabilizing the closed-loop system. This work is an extension and complement of networked …
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State switching in multi-stable systems: control and optimisation.
… thesis studies state-switching in multistable systems, so that they can switch from inefficient operating states to a more efficient one, in order to achieve performance enhancement in real-life engineering systems. Multistable systems have more than one stable state under a set of parameters …
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Optical networking equipment manufacturing
… strategy, and a new approach to manufacturing systems control. Celestica is developing a set of standards for ONE manufacturing that will support the rapid development of the new skills required for this industry. This work outlines the standards and explores the specific issues related to …
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Nonholonomic Feedback Control Among Moving Obstacles
<p>A feedback controller is developed for navigating a nonholonomic vehicle in an area with multiple stationary and possibly moving obstacles. Among other applications the developed algorithms can be used for automatic parking of a passenger car in a parking lot with complex configuration or a …
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Program Partitioning and Synchronization on Multiprocessor Systems (Parallel, Computer Architecture, Compiler)
… identified in solving problems on multiprocessor systems: control structure, program partitioning, scheduling, synchronization, and memory access. The solutions of these problems determine the performance and efficiency of future multiprocessor machines.
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Stabilizing the ball on beam system with analog feedback
… stabilized to demonstrate the capabilities of control systems. This demonstration system is intended for use in control theory classes such as 6.011 Introduction to Communication, Control, and Signal Processing, 6.302 Feedback Systems, and 6.003 Signals and Systems. Control of this unstable …
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Investigation of two-component signaling systems in Pseudomonas aeruginosa and their roles in the mucus barrier
… which this occurs is via two-component signaling systems, which are typically comprised of a membrane-bound histidine kinase that senses external cues signals, and a cognate cytoplasmic response regulator that triggers changes in gene expression. The importance of these systems is highlighted by …
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Cybernetics, AI and Modernisation in Contemporary China
… the lens of cybernetics, a discipline centred on systems control and engineering that has fundamentally influenced governance structures and bureaucratic authority. Moving beyond the existing analyses of China’s development that emphasize economic reforms or organisational capabilities, this …
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Comparative analysis of robust design methods
… improve the quality of products, processes and systems. Control factors are those system parameters that can be easily controlled and manipulated. Noise factors are those system parameters that are difficult and/or costly to control and are presumed uncontrollable. Robust parameter design …
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High bandwidth rotary fast tool servos and a hybrid rotary/linear electromagnetic actuator
… tools are developed for precision mechanical systems, power and signal electronic systems, control systems, normal-stress electromagnetic actuators, and the dynamics of the combined systems. A fast tool servo (FTS) is a high-speed auxiliary servo axis that is added to a diamond turning machine …
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Multivariate Singular Spectrum Analysis: A Principled, Practical, and Performant Solution for Time Series Imputation and Forecasting
… across many domains, including cyber-physical systems, finance, retail, healthcare to name a few. A common goal across all of these domains is accurate imputation and forecasting of multivariate time series in the presence of noisy and/or missing data. Given the growing need to embed predictive …
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Physical, Mechanical and Chemical Aging of Polyurea Nanocomposites
Two component polyurea systems, on one hand, are gaining popularity as corrosion and abrasion resistant coatings and linings while on the other hand there are a few polyurea compositions being used as barrier against blast and ballistic threats to protect nation's critical infrastructure. Physical …
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A two step predictor-corrector method for voltage collapse point estimation
… it is very computationally expensive for large systems. This work aims to speed up the predictor-corrector process by using a VSI called P-index. An initial prediction is made, corrected using a continuation technique, and then updated after correction. The results are relatively accurate and it …
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Improved computations of the voltage collapse point using the P-index
Online voltage stability assessment of power system is important to ensure reliability and security. Over the years, many voltage monitoring indices have been documented in the literature. These indices are designed to quantify proximity to voltage collapse. However, they all have inaccuracies when …
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Performance comparison between Dual-blinder and a Phasor-based Out of Step detection functions using hardware in the loop test
When an Out of Step (OOS) event occurs between two connected areas in the power system, the two areas should be separated before the OOS results in generation loss, equipment damage, and eventually a total black-out. This separation is achieved via the OOS function that implemented at specific …
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Optimal Control of Weakly Forced Nonlinear Oscillators
<p>Optimal control of nonlinear oscillatory systems poses numerous theoretical and computational challenges. Motivated by applications in neuroscience, we develop tools and methods to synthesize optimal controls for nonlinear oscillators described by reduced order dynamical systems. Control of …
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New methods for the protection of embedded generators against the loss of utility networks.
… Alternative Transients Program (ATP). Various control and measurement devices were built using the Transient Analysis of Control Systems (TACS) part of ATP. After extensive investigation it was decided that the problem was ideal for an Artificial Neural Network (ANN) solution. Further research …
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Optimal modulation and topology design of modular multilevel converter for grid integration of solar photovoltaic systems
… it still needs improvements for medium-voltage systems and grid integration of distributed energy resources. The contribution of this thesis is twofold. First, modulation techniques are designed to reduce switching frequency through novel advanced submodule sorting algorithms, which provide a …
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Managing business change projects: a social practice perspective
… engineering paradigm of objective rationality, systems control and universally-applicable structured methods underpinning conventional ‘best practice’ approaches to managing business change projects. The call is for better understanding of the reality of business change projects as experienced …
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