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 18 of 18 for “"Automatic Tuning"”.
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AUTOMATIC TUNING OF PROCESS CONTROLLERS : PRACTICAL APPROACHES
This thesis focuses on practical tuning approaches for PID controllers - the most widely used controller in the process industry. Through analysis and approximation, analytical tuning formulas based on gain margin and phase margin are derived. These analytical formulas are particularly useful in …
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Automatic Tuning Algorithms and Statistical Circuit Design
… topics are investigated the first of which is automatic tuning algorithms for active filters. Here the problem is that in order to meet response specifications these filters usually must be tuned or adjusted, preferably by computer automation if the production level is high. Three generalized …
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Automatic Tuning of PID Controllers Based on Asymmetric Relay Feedback
… to obtain better models and hence better tuning, without making the autotuner more complicated or time consuming.Some processes demand more accurate modeling and tuning to obtain con-trollers of sufficient performance. The proposed autotuner can classify these processes from the …
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Intelligent runtime tuning of parallel applications with control points
The tuning of parallel programs on large distributed-memory machines today is usually a costly, and often extensive, manual process. Automatic tuning techniques can help reduce this manual burden. This dissertation investigates the utility of a new class of automatic tuning methods for large-scale …
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Exploiting structure for scalable software verification
… as well as an opportunity for businesses. Automatic software bug-finding and verification tools have a potential to completely revolutionize the software engineering industry by improving reliability and decreasing development costs. Since software analysis is in general undecidable, …
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The art of parameterless evolutionary algorithms
… relevant parameters must be carefully tuned. The tuning of operators and parameters is often manual and time consuming. The focus of this dissertation is on automatic tuning of operators and parameters. This dissertation presents methodologies for automating the tuning of the population size …
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Model-based spectral inference in noisy physical time series: applications in laser linewidth estimation and precision magnetometry
… approach with Expectation – Maximization-based automatic tuning of model parameters. These methods illustrate how incorporating physical system knowledge into sta- tistical inference enhances the accuracy and robustness of spectral estimation in low-SNR and dynamically filtered regimes. …
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Data-Driven Pipeline for Learning Discrete behavioural Models of Cyber-Physical Systems
… learning algorithm of choice. This enables automatic tuning of discretization and learning hyperparameters through non-convex optimization, eliminating the need for manual intervention. The method is evaluated on two simulated datasets and a real-world one. The strengths and limitations of …
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Attitude control on manifolds via optimization and contractions with automatic gain tuning
… these approaches are generally complex or lack automatic, user-friendly ways to tune them. The goal of this dissertation is to develop simple geometric attitude controllers that are globally, exponentially stable and can be automatically tuned. By simple, we mean that the controllers are …
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Optimisation of a Modern Numerical Library: a Bottom-Up Approach
… new algorithms for key operations, and build an automatic tuning module to further improve performance. At the graph level, which consists of multiple operations, I present the idea of using graph as common Intermediate Representation to enable interoperability on other computation frameworks and …
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Data-driven methods for design of model predictive controllers
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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Tools for Autonomous Process Control
… of basic process features, selection and tuning of on-line controller, monitoring of the on-line control performance, and fault diagnosis. Implementation aspects and software architectures of an autonomous single loop controller are also discussed. In particular, sequential control using …
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Design and Control of Versatile High-Speed and Large-Range Atomic Force Microscopes
… associated with experiment setup and controller tuning, and (iv) introduce custom design modifications resulting in affordable AFMs for engineering education. These new capabilities are primarily enabled with the development of new sub- systems. The key components include nano-positioners, …
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Integrated Tunable LC Higher-Order Microwave Filters for Interference Mitigation
… BiCMOS technology. Along with center frequency tuning, the filter achieves first ever reported 3-dB bandwidth tuning from 2% to 25%, representing 120 MHz to 1.5 GHz of bandwidth at 6 GHz. A new set of design equations were developed for the 4th-order parallel synthesis of BPF. A practical …
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Advanced PID Control Optimisation and System Identification for Multivariable Glass Furnace Processes by Genetic Algorithms
… optimum and illustrated the effectiveness. An automatic tuning of decentralised discrete PID controllers for multivariable processes, based on SGAs, was proposed. The main improvement of the proposed technique is the ability to enhance the control robustness and to optimise discrete PID …
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Methods of system identification, parameter estimation and optimisation applied to problems of modelling and control in engineering and physiology
… optimisation problems, the design, experimental tuning and performance evaluation of nonlinear control systems has much in common with the use of optimisation techniques within the model development process and it is therefore helpful to consider these two areas together. The work described in …
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Relay Feedback and Multivariable Control
… of relay feedback and multivariable control. Tuning of individual loops in an existing multivariable control system is discussed. It is shown that a specific relay feedback experiment can be used to obtain process information suitable for performance improvement in a loop, without any prior …