Results 21 to 30 of about 248,739 (301)

Towards Distributed and Adaptive Detection and Localisation of Network Faults [PDF]

, 2010
We present a statistical probing-approach to distributed fault-detection in networked systems, based on autonomous configuration of algorithm parameters. Statistical modelling is used for detection and localisation of network faults.
Gillblad, Daniel, Steinert, Rebecca
core   +2 more sources

Sensorless control of deep-sea ROVs PMSMs excited by matrix converters [PDF]

, 2005
The paper reports the development of model-based sensorless control methodologies for driving PMSMs using matrix converters. In particular, experimental results show that observer-based state-estimation techniques normally employed for sensorless control
Bhangu, B S, Bingham, Chris, Snary, P, Stone, D A   +3 more
core   +1 more source

Iterative Learning Scheme Based Sensor Fault Estimation for Nonlinear Repetitive System

IEEE Access, 2019
Iterative learning scheme is proposed with the aim to achieve perfect tracking of a prescribed reference trajectory for systems that operate repetitively.
Li Feng, Meng Deng, Ke Zhang, Shuiqing Xu   +3 more
doaj   +1 more source

Estimating Fault Numbers Remaining After Testing [PDF]

2013 IEEE Sixth International Conference on Software Testing, Verification and Validation, 2013
Testing is an essential component of the software development process, but also one which is exceptionally difficult to manage and control. For example, it is well understood that testing techniques are not guaranteed to detect all faults, but more frustrating is that after the application of a testing technique the tester has little or no knowledge of
openaire   +1 more source

An estimation method for sensor faults based on observer in interconnected systems.

PLoS ONE
In this research, a class of nonlinear interconnected systems with sensor faults were investigated and an estimation method was proposed for system sensor faults based on the theory of system state reconstruction.
Yanxiu Sun, Hong Li
doaj   +1 more source

Model Prediction-Based Approach to Fault Tolerant Control with Applications [PDF]

, 2013
— Fault-tolerant control (FTC) is an integral component in industrial processes as it enables the system to continue robust operation under some conditions.
Khalid, Dr. Haris M., Mahmoud, Professor Magdi S.   +1 more
core   +1 more source

Optimal Fault Tolerant Control of Large-Scale Wind Turbines in the Case of the Pitch Actuator Partial Faults

Complexity, 2020
In this paper, an adaptive fault tolerant control strategy is proposed to deal with the three pitch actuator faults in the large-scale wind turbines. Firstly, a simultaneous state and fault estimation was performed through a suitable LMI (linear matrix ...
Younes Ait El Maati, Lhoussain El Bahir
doaj   +1 more source

Thermodynamic Estimation of Transformer Fault Severity

IEEE Transactions on Power Delivery, 2015
Conventional practice for transformer dissolved gas analysis (DGA) is to use concentrations of several fault gases, with or without total dissolved combustible gas, for evaluating apparent fault severity. We suggest a simpler approach based on the normalized energy intensity (NEI), a quantity related directly to fault energy dissipated within the ...
James Dukarm, Fredi Jakob
openaire   +1 more source

Two-Stage Hyperelliptic Kalman Filter-Based Hybrid Fault Observer for Aeroengine Actuator under Multi-Source Uncertainty

Aerospace
An aeroengine faces multi-source uncertainty consisting of aeroengine epistemic uncertainty and the control system stochastic uncertainty during operation.
Yang Wang, Rui-Qian Sun, Lin-Feng Gou
doaj   +1 more source

Sequential Fault-Tolerant Fusion Estimation for Multisensor Time-Varying Systems

Discrete Dynamics in Nature and Society, 2018
In this paper, the impact of the fusion framework on the fault diagnosis process is discussed. The centralized fusion framework makes it difficult to locate and estimate the sensor fault.
Xiaoliang Feng, Lan Wu, Chenglin Wen
doaj   +1 more source