Results 21 to 30 of about 81,076 (316)

Fault Detection in Ball Bearings

CoRR, 2022
Ball bearing joints are a critical component in all rotating machinery, and detecting and locating faults in these joints is a significant problem in industry and research. Intelligent fault detection (IFD) is the process of applying machine learning and other statistical methods to monitor the health states of machines.
Joshua Pickard, Sarah Moll
openaire   +2 more sources

General computational approach for optimal fault detection

, 2009
We propose a new computational approach to solve the optimal fault detection problem in the most general setting. The proposed procedure is free of any technical assumptions and is applicable to both proper and non-proper systems.
Andras Varga, Varga, Andreas
core   +1 more source

Pilot protection based on the quasi-directional element of LCL-tuned half-wavelength transmission line

International Journal of Electrical Power & Energy Systems
To create HWTL characteristics, the electrical distance of AC transmission lines is compensated to half the power frequency wavelength by utilizing tuned circuits.
Yutao Tang, Hongchun Shu, Yue Dai, Yu Zhang, Yiming Han   +4 more
doaj   +1 more source

Comparative Analysis of Real-Time Fault Detection Methods Based on Certain Artificial Intelligent Algorithms for a Hydrogen–Oxygen Rocket Engine

Aerospace, 2022
The real-time fault detection and diagnosis algorithm of a liquid rocket engine is the basis of online reconfiguration of guidance and the control system of a launch vehicle, which is directly related to the success or failure of space mission.
Peihao Huang, Tao Wang, Lin Ding, Huhuang Yu, Yong Tang, Dianle Zhou   +5 more
doaj   +1 more source

Encoders and fault detection

2003 European Control Conference (ECC), 2003
Monitoring large-scale systems is of fundamental importance in modern infrastructures. Many of these large-scale systems are complex interconnections of sub-components which interact by means of communication channels with limited bandwidth. Therefore the information must be encoded in order to be transmitted.
openaire   +2 more sources

New computational paradigms in solving fault detection and isolation problems

, 2012
Several fault detection and isolation problems are formulated for linear time-invariant systems with additive faults and general existence conditions of their solutions are given.
Varga, Andreas
core   +1 more source

Induction machine fault detection enhancement using a stator current high resolution spectrum [PDF]

, 2012
Fault detection in squirrel cage induction machines based on stator current spectrum has been widely investigated. Several high resolution spectral estimation techniques have been developed and used to detect induction machine abnormal operating ...
CHARPENTIER, Jean-Frederic, Vincent Choqueuse, EL BOUCHIKHI, El Houssin, BENBOUZID, Mohamed, Choqueuse, Vincent, V., Mohamed Benbouzid, El Houssin El Bouchikhi, Jean Frederic Charpentier, CHOQUEUSE, Vincent   +8 more
core   +1 more source

Adaptability analysis of distance protection in flexible low frequency ac outgoing transmission line of wind power system

Results in Engineering
The extension of offshore wind power to medium and far seas has promoted the development of flexible low-frequency AC transmission (FLFAC) technology. However, the fault responses of the power electronic interface-type power sources (wind turbines and ...
Yue Dai, Hongchun Shu, Yutao Tang, Haoming Liu   +3 more
doaj   +1 more source

On parametric solution of fault detection problems

, 2011
We discuss the solution of the fault detection problem in presence of parametric uncertainties. The basic approach is an extension of the nullspace method for constant systems to the case of linear parameter varying (LPV) models.
Andras Varga, Varga, A.
core   +1 more source

An adaptive reclosing scheme for flexible DC grid based on residual voltage S-transformation

Scientific Reports
When a fault occurs on a line, it is necessary to quickly isolate the fault to improve the safety and reliability of the transmission system. Due to the lack of effective ability to identify the nature of faults, the traditional automatic reclosing ...
Yue Dai, Hongchun Shu, Na An, Yutao Tang, Yiming Han   +4 more
doaj   +1 more source