Fault Detection
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Recent papers in Fault Detection
This paper presents an effective algorithm to locate Single Line to Ground (SLG) fault at a transmission line. Post fault voltages and currents from both substation terminals were used as the input parameters to the algorithm. Discrete... more
The papers published in these proceedings are presented in the Third International Seminar on Maintenance, Condition Monitoring and Diagnostics, to be arranged in Oulu, Finland, in 29th – 30th September, 2010. Arranged by the University... more
The reliable condition monitoring of machines and the early detection of faults play an important role in condition-based maintenance. Information on the condition of machines is needed in different forms but finally it has to be in as... more
This paper describes the use of the extended Park's vector approach (EPVA) for diagnosing the occurrence of stator winding faults in operating three-phase synchronous and asynchronous motors. The major theoretical principles related with... more
SEMATECH has sponsored a “Test Method Evaluation” study to understand the trade-offs among the most common test methodologies used in the industry. This paper presents the results of the failure analysis portion of that project. The... more
In this paper, a methodology for the development of fault-tolerant adders based on the radix 2 signed digit (SD) representation is presented. The use of a number representation characterized by a carry propagation confined to neighbor... more
An evolutionary-based procedure for designing adaptive filters based on second-generation wavelet (lifting scheme) packet decomposition for industrial fault detection is presented. The proposed procedure is validated by an experimental... more
AbstractIn this paper a nonlinear observer which synthe-sizes sliding mode techniques and neural state space models is proposed and is applied for robust fault diagnosis in a class of nonlinear systems. The sliding mode term is utilized... more
Direct current (dc) microgrids have gained significant interest in research due to dc generation/storage technologies—such as photovoltaics (PV) and batteries—increasing performance and reducing in cost. However, proper protection and... more
Stable smelter operation is critical for successful production of base metals from particulate ore. This work studies the operation of an industrial direct current electric arc furnace that operates as a smelter in a large-scale... more
ABSTRACT Classical views on testing and their associated testing models are not dealing with the question of fault repairing but only focus on fault detection. Diagnosis consists of determining the nature of a detected fault, of locating... more
A comprehensive physics-based model of the helicopter rotor in forward flight is used to analyze the impact of selected faults on rotor system behavior. The rotor model is based on finite elements in space and time. The helicopter rotor... more
This paper presents an observer-based method for induction machine stator inter-turn short-circuit fault detection and identification. The mathematical model of induction machine with inter-turn short-circuit fault is developed. A high... more
Test case prioritization techniques have been shown to improve regression-testing activities by increasing the rate of fault detection, thus allowing testers to fix faults earlier. The current techniques, mostly code coverage- based,... more
This paper presents the development of neural- network-based controller of space vector modulation (ANN-SVPWM) for low-cost voltage-source inverters. This ANN-SVPWM controller completely covers the undermodulation and overmodulation modes... more