Evaluations of the risk fault-induced water inrush hazard is an important issue for mining engineering applications. According to characteristics seam floor during advancing, a mechanical model fault activation built obtain equations normal stress and shear on surface fault, as well mechanics criterion activation. Furthermore, using FLAC3D numerical software, variation under two different advan...

Generic Network Location Service provides a Location Service system based on DHT technology, which is storing device location records in nodes within a Chord DHT. Location records are consisting of network device identification keys as attributes, which are used to create replicas of additional location records through established hashing mechanisms. Specifically, we first discuss the design of...

prompt detection and diagnosis of faults in industrial systems areessential to minimize the production losses, increase the safety of the operatorand the equipment. several techniques are available in the literature to achievethese objectives. this paper presents fuzzy based control and fault detection for a6/4 switched reluctance motor. the fuzzy logic control performs like a classicalproporti...

In analog integrated circuits, process variations result in physical parameter variations. Simulated performance values must then be considered with their tolerance intervals. Consequently, contrarily to digital circuits where the outputs are either ’0’ or ’1’ such that we can decide without ambiguity whether a fault is detectable or not, for analog circuits fault detectability is still a vague...

The design & development of a fuzzy logic controller using UPFCs to damp out the oscillations in FACTS based integrated multi-machine power system when faults takes place at different buses (one fault at a time) is presented in this paper. The multi-machine system consists of 3 generators, 3 transformers, 9 buses, 4 loads & 2UPFCs. 3 Simulink models are developed with & without the hybrid contr...

Web Services for Automated Fault Analysis (WS-AFA) in Electrical Power System are described in this paper. WS-AFA is a new Information Technology solution for automated investigation and analysis of fault and disturbance records obtained from Digital Fault Recorders (DFRs) or other Intelligent Electronic Devices (IEDs) in substations. The paper describes the overall system architecture as well ...

This paper discusses the results of an experimental study aimed at evaluating influence vertical ground motion component on seismic performance unreinforced brick-masonry buildings. The research was motivated by post-earthquake observations significant structural damage in vicinity fault, where horizontal and motions are often strong synchronized. Vertical accelerations can fluctuate gravity lo...

A video transmission system based on combined source coding and multilevel modulation is proposed. For the proposed system, graceful degradation for noisy channels is obtained by nding good index maps between the quantized source coder parameters and the amplitude levels of a multilevel QAM signal constellation. The index maps are designed both for good neighbor properties and for power eecient...

Fault detection and process monitoring using principal component analysis (PCA) have been studied intensively and applied to industrial processes. PCA is used to deene an orthogonal partition of the measurement space into two orthogonal subspaces: a principal component sub-space (PCS), and a residual subspace (RS). In this paper, each process fault is also described by a subspace and the fundam...

this paper addresses the design of an observer-based fault diagnosis scheme, which is applied to some of the sensors and actuators of a wind turbine benchmark model. the methodology is based on a modified sliding mode observer (smo) that allows accurate reconstruction of multiple sensor or actuator faults occurring simultaneously. the faults are reconstructed using the equivalent output error i...