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 43 for “"Detection And Isolation"”.
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FAULT DETECTION AND ISOLATION FOR WIND TURBINE DYNAMIC SYSTEMS
This work presents two fault detection and isolation (FDI) approaches for wind turbine systems (WTS). Firstly, a non-linear mathematical model for wind turbine (WT) dynamics is developed. Based on the developed WTS mathematical model, a robust fault detection observer is designed to estimate system …
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Concurrent detection and isolation of cellular and molecular biomarkers
<p>Detection of cancer markers such as protein biomolecules and cancer cells in bodily fluids is of great importance in early diagnosis, prognosis as well as evaluation of therapy efficacy. Numerous devices have been developed for detecting either cellular or molecular targets, however there has …
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Model-based fault detection and isolation techniques for wind turbines
… of this thesis is to design model-based fault detection and isolation techniques for a large-scale wind turbine. A mathematical model of the 5MW wind turbine was developed; the model was sufficiently detailed to be used for simulation purposes. The stages of the modelling procedure were to …
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Fault detection and isolation in switched linear systems and applications
This thesis proposes a fault detection and isolation (FDI) method for switched linear systems. The method builds on a class of FDI filters for linear time-invariant (LTI) systems based on reduced-order observers. If certain conditions are satisfied, then it is possible to apply these filters to …
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Observer-based fault detection and isolation for motor drive inverters
… Observer-based methods can be used for fault detection and isolation for switched linear systems. A state observer is constructed based on the physical system. Changes in the observer error are monitored to detect specific types of faults. This thesis uses the mathematical basis to offer a …
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Failure detection and isolation for the Space Shuttle Main Engine
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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Detection and Isolation of Prey Capture Events in Animal-Borne Images
Understanding the foraging habits and prey availability for a species is crucial. Prey availability is crucial to a species' survival and sustainability of the food pyramid. Identifying the type of prey consumed also allows ecologists to determine the energy received, while the duration and extent …
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INTELLIGENT FAULT DETECTION AND ISOLATION FOR PROTON EXCHANGE MEMBRANE FUEL CELL SYSTEMS
This work presents a new approach for detecting and isolating faults in nonlinear processes using independent neural network models. In this approach, an independent neural network is used to model the proton exchange membrane fuel cell nonlinear systems using a multi-input multi-output structure. …
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Algorithmic Optimization of Sensor Placement on Civil Structures for Fault Detection and Isolation
<p>Damage detection and isolation (DDI) is a task that can be divided into two major portions. Damage detection constitutes the first part of the problem, where the goal is to determine when a structural anomaly has occurred. Once an anomaly has been detected, algorithms must be employed to …
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Fault detection and isolation via continuous time statistics = Detección y Diagnóstico de fallos mediante estadísticos en tiempo continuo
… diferentes a partir de estadísticos diferentes, dando lugar así a distintos esquemas de detección y diagnóstico, que serán caracterizados desde el punto de vista de su conveniencia para la detección de distintos tipos de fallos. La regla de Bayes, de uso habitual en clasificación de patrones, es …
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Parameter Identification And Fault Detection For Reliable Control Of Permanent Magnet Motors
… of this dissertation is to develop new fault detection, identification, estimation and control algorithms that will be used to detect winding stator fault, identify the motor parameters and optimally control machine during faulty condition. Quality or proposed algorithms for Fault detection, …
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Observer based fault detection filters for three-phase inverters and statcoms
… benefits in terms of size, weight, performance, and feasibility to various electrical systems. However, with increasing penetration of power electronics circuits in safety- and mission-critical systems, the reliability of the power electronics is becoming an issue of increasing concern. To …
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Fault detection, isolation, and recovery for autonomous parafoils
… This aerial delivery method provides a safety and logistical advantage over traditional ground- or helicopter-based payload transportation methods. The occurrence of a fault during a flight can severely degrade vehicle performance, effectively nullifying the value of the guided system, or …
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Estimation and fault diagnosis for vehicle energy systems
… by a desire to achieve reduced carbon emissions and maintenance costs, along with an increase in efficiency and performance, electrification has become a major trend in modern vehicles. This increase in electrification is accompanied by an increase in thermal power dissipated due to electrical …
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The importance of selecting the optimal number of principal components for fault detection using principal component analysis
Fault detection and isolation are the two fundamental building blocks of process monitoring. Accurate and efficient process monitoring increases plant availability and utilization. Principal component analysis is one of the statistical techniques that are used for fault detection. Determination of …
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ΑΝΤΙΓΟΝΙΚΗ ΜΕΛΕΤΗ. ΤΥΠΟΠΟΙΗΣΗ ΚΑΙ ΑΝΟΣΟΕΝΖΥΜΑΤΙΚΟΣ ΕΛΕΓΧΟΣ ΕΙΔΙΚΩΝ ΑΝΤΙΣΩΜΑΤΩΝ ΕΝΑΝΤΙ ΤΩΝ ΤΥΠΩΝ 1 ΚΑΙ 2 ΤΟΥ ΙΟΥ ΤΟΥ ΑΠΛΟΥ ΕΡΠΗΤΑ (HSV)
STUDY ON THE ANTIGEN PRODUCTION OF HSV-1/733 AND HSV-2/734 FROM INFECTED CELL CULTURES, THE PRODUCTION OF MONOSPECIFIC ANTISERA, THE DETECTION AND ISOLATION OF SPECIFIC ANTIGENS FOR THE TWO TYPES OF VIRUS. TYPING OF 40 ISOLATES FROM DIFFERENT HERPETIC LESIONS OF PATIENTS. THE TYPING OF THESE …
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Application of Dirichlet Distribution for Polytopic Model Estimation
… is often used in the areas of automatic control and fault detection and isolation (FDI). It is an alternative to the multiple model approach which explicitly allows for interpolation among local models. This thesis proposes a novel approach to PM estimation by modeling the set of PM weights as a …
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Spacecraft computing systems with high-level specifications and FPGAs
… custom software is specified, written, compiled, and executed by the microprocessors. The current process leads to a dedicated group of software engineers to design and create spacecraft software. This process is expensive and error-prone. Errors that occur during the translation of subsystem …
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