نتایج جستجو برای: incipient faults

تعداد نتایج: 28455  

Journal: :JAMA: The Journal of the American Medical Association 1895

River confluence is a common feature of most irrigation and drainage channels and river systems, where tributary conflicts the main channel. In these section, rapid changes in velocity and discharge, sediment distribution and flow turbulent result in a deep confluence scour, a bar point in the separation zone at downstream of junction corner  and finally vortex flow. Thus, the main goal of this...

Journal: :Sensors 2021

In this paper, a novel and flexible solution for fault prediction based on data collected from Supervisory Control Data Acquisition (SCADA) system is presented. Generic fault/status offered by means of driven approach self-organizing map (SOM) the definition an original Key Performance Indicator (KPI). The model has been assessed park three photovoltaic (PV) plants with installed capacity up to...

Journal: :International journal of advances in scientific research and engineering 2021

Vibration monitoring is the most widely used condition technique, where machine's vibrations are analyzed to determine incipient faults. The early detection of a fault has many advantages as detecting simple before causes too complicated problems. Every machine contains mechanical parts that emit vibration. These can be monitored and recorded reference signal, displaying it using different stra...

Journal: :Appl. Soft Comput. 2006
Niranjan Roy Ranjan Ganguli

The problem of denoising damage indicator signals for improved operational health monitoring of systems is addressed by applying soft computing methods to design filters. Since measured data in operational settings is contaminated with noise and outliers, pattern recognition algorithms for fault detection and isolation can give false alarms. A direct approach to improving the fault detection an...

Journal: :IEEE Access 2023

To effectively recognize the incipient potential faults caused by degradation of multiple components in DC-DC converters, a fault diagnosis method that involves multi-dimensional feature fusion and sensitive extraction is proposed. Firstly, time-domain statistical characteristics normal samples are extracted. The KL divergence normalized kurtosis intrinsic mode functions (IMFs) between them cal...

Journal: :Health promotion international 2002
Eila Laukkanen Sirpa Shemeikka Irma-Leena Notkola Heli Koivumaa-Honkanen Aulikki Nissinen

This study aimed to investigate whether behavioural or emotional problems in adolescents detected by their teachers are signs of a common psychosocial maladjustment and of the beginning of social marginalization. Altogether, 171 pupils (15 years of age) from the eastern part of Finland participated in the survey. Behavioural and emotional problems and academic achievements were assessed separat...

Journal: :Schizophrenia bulletin 2007
Jean Addington Kristin S Cadenhead Tyrone D Cannon Barbara Cornblatt Thomas H McGlashan Diana O Perkins Larry J Seidman Ming Tsuang Elaine F Walker Scott W Woods Robert Heinssen

This article presents the rationale, design, and preliminary findings of the North American Prodrome Longitudinal Study (NAPLS), a collaborative, multisite investigation into the earliest phase of psychotic illness. We describe how 8 independently conceived research projects were integrated methodologically, how diagnostic reliability was achieved across sites on the Structured Interview for Pr...

Journal: :E3S web of conferences 2021

The chiller plays an important role for providing comfort environment. Once, the incipient faults are missed, they may develop to be fatal and further lead equipment damage casualties. Nevertheless, fault in running process of easily neglected noise. Moreover, variables have dynamic characteristics, each variable is correlated with other process, a certain interrelated at different times. To ta...

Journal: :Basin Research 2021

Potential field data, reprocessed regional 2D seismic reflection profiles and 3D tied to wells were used study the late Devonian-Permian development of Nordkapp Basin in Barents Sea. The composite basin can be subdivided into northeastern, central southwestern segments that developed above a basement contains elements Timanian Caledonian regimes. transition between structures is positioned belo...

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