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 20 for “"Fault isolation"”.
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Interactive maintenance terminal fault isolation program
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.
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Compressed and dynamic fault dictionaries for fault isolation
… issues that have in the past limited the use of fault dictionaries for VLSI fault isolation. Dictionary formats have been analyzed, and a new, more accurate matching algorithm has been developed. Alternative techniques for compressing fault dictionaries have been investigated to address size and …
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Modeling for ship power system emulation
… maximum capabilities in the event of system faults. This is to ensure that the crew has the ability to complete real time tactical missions in the event of battle damage to any localized portions of the electrical distribution system. Fault isolation is a priority component of the U.S. Navy's …
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DC fault protection in HVDC system and the impact on AC frequency response
… duration of power outage in the event of a DC fault. The current definition of maximum loss-of-infeed for an AC network does not consider the duration of the power outage, and the impacts of DC fault protection arrangements which result in different speed of power restoration, on the system …
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Grasp - A Graph-Based SLA Breach Prediction Framework at the Service Level in Neural Inference
… of microservices. Despite their advantages in fault isolation and flexible deployment, microservices often experience unpredictable latency spikes, leading to costly Service Level Agreement (SLA) violations. This thesis introduces a multiscale time-spectrum framework, called GRASP (Graph-based …
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Flexible memory protection for multicore processors
… an access control scheme providing security, fault isolation, and efficient shared memory to any number of threads within a single address space. Lumen uses a new concurrent interval skip list (ISL) to scalably maintain and query a set of memory region descriptors containing permissions …
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Model based fault diagnosis and prognosis of class of linear and nonlinear distributed parameter systems modeled by partial differential equations
… from component failures. An accurate yet faster fault prognosis and resilience can improve system availability and reduce unscheduled downtime. Therefore, in this dissertation, model-based prognosis and resilience control schemes have been developed for online prediction and accommodation of …
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Securing cloud-based data analytics: A practical approach
… cloud by leveraging BFT replication coupled with fault isolation and b. secure data from being leaked by computing directly on encrypted data. For securing computations (a.), we leverage a combination of variable-degree clustering, approximated and offline output comparison, smart deployment, and …
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Fault detection and diagnosis : application in microelectromechanical systems
This thesis presents the development of a fault detection and diagnosis (FDD) procedure capable of capturing, isolating and identifying multiple abrupt parametric faults. The proposed method relies on parameter estimation deployed in a set membership framework. This approach presupposes the …
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Optimal Architectures for Electric Vehicle Fast Charging and Impacts on Grid and Battery Life
… power density, service reliability, and fault isolation. Two optimized DC-DC converter topologies are introduced for EV charging applications. The first is an isolated ultra-wide voltage DC-DC converter to accommodate both 400 V and 800 V EV platforms. The second is a power-dense partial …
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Enhancing Software Security through Code Diversification Verification, Control-flow Restriction, and Automatic Compartmentalization
… a classical technique known as Software Fault Isolation (SFI) on an x86-64 architecture. Prior works attempting to implement SFI on an x86-64 architecture have suffered from supporting a limited number of sandboxes, high context-switch overhead, and requiring extensive modifications to …
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DC-DC converter designs for medium and high voltage direct current systems
DC fault protection is one challenge impeding the development of multi-terminal dc grids. The absence of manufacturing and operational standards has led to many point-to-point HVDC links built at different voltage levels, which creates another challenge. Therefore, the issues of voltage matching …
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Design and analysis of current stress minimalisation controllers in multi-active bridge DC-DC converters.
… bidirectional power flow regulation and DC fault isolation. In that sense this family of DC-DC converters is similar to AC transformers in AC grids and are hence called DC transformers. However, DC transformers are generally less efficient compared to AC transformers, due to the introduction …
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Scanning near-field photon emission microscopy
The resolution of fault isolation techniques, like far-field photon emission microscopy (FFPEM), is grossly inadequate for advanced semiconductor technology nodes beyond 65 nm. The fundamental limit on spatial resolution of FFPEM is approximately half the wavelength of the detected photons. The …
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Control and operation of HVDC connected offshore windfarm with particular emphasis on faults and black start
… this thesis investigates the different fault characteristics of HVDC connected offshore windfarm systems and proposes several fault rides through control and system recovery schemes.;The first topic discussed in this thesis is the offshore AC fault ride through operation. When modular …
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Moderní operační systém bez MMU
Jednotka správy paměti (MMU) je hardwarová komponenta zajišťující zejména překlad virtuálních adres na fyzické a s tím související bezpečné oddělení jádra a procesů. Řada procesorů i v dnešní době však postrádá MMU jednotku. HelenOS je výzkumný operační systém vyvíjený na MFF UK. Jádro tohoto …
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DCT Enabled smart consumer Grid Model
… voltage regulation, reactive power compensation, fault detection and isolation etc. Apart from advantages, DCT required intelligent control algorithm and additional supervisory circuit makes it complicated and expensive. Therefore, in our proposed model we discussed the pros and cons of typical …
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Model-Centric Interdependent Critical Infrastructure System Recovery Analysis and Metrics
This dissertation defines and evaluates new operations management modeling concepts for use with interdependent critical infrastructure system reconfiguration and recovery analysis. The work combines concepts from Graph Trace Analysis (GTA), Object Oriented Analysis and Design (OOAandD), the …
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ΑΡΧΙΤΕΚΤΟΝΙΚΗ ΔΙΑΧΕΙΡΙΣΗΣ ΕΝΟΣ ΟΠΤΙΚΟΥ ΤΟΠΙΚΟΥ ΔΙΚΤΥΟΥ ΠΟΛΛΑΠΛΩΝ ΥΠΗΡΕΣΙΩΝ
… GIVES PROTECTION AGAINST ANY KIND AND NUMBER OF FAULTS IS PRESENTED. ASEQUENCE OF OPERATIONS THROUGH WHICH A NEW SYSTEM CONFIGURATION IS ESTABLISHEDALLOWING THE INFORMATION EXCHANGE BETWEEN ALIVE STATIONS IS INTRODUCED. THE FAULTY ELEMENT IS DETECTED, ISOLATED FROM THE NETWORK AND THE ALIVE NODES …
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ΜΕΛΕΤΗ ΚΑΙ ΑΝΑΠΤΥΞΗ ΜΕΘΟΔΩΝ ΔΙΑΓΝΩΣΗΣ ΒΛΑΒΩΝ ΑΝΑΛΟΓΙΚΩΝ ΗΛΕΚΤΡΟΝΙΚΩΝ ΚΥΚΛΩΜΑΤΩΝΣΕ ΥΠΟΛΟΓΙΣΤΗ
IN THE PRESENT THESIS THE ANALOG FAULT DIAGNOSIS PROBLEM IS INVESTIGATED AND NOVEL THEORETICAL AND PRACTICAL TECHNIQUES ARE PRESENTED. THIS PROBLEM HAS BEEN OF INTEREST DURING THE LAST THIRTY YEARS. THE CIRCUIT THEORISTS' INTEREST WAS INTENSIFIED IN THE LATE OF THE PREVIOUS DECADE RESULTING TO THE …