Results 31 to 40 of about 36,327 (304)

On-line transformer condition monitoring through diagnostics and anomaly detection [PDF]

open access: yes, 2009
This paper describes the end-to-end components of an on-line system for diagnostics and anomaly detection. The system provides condition monitoring capabilities for two in- service transmission transformers in the UK.
Catterson, V.M.   +3 more
core   +1 more source

Use of spectral kurtosis for improving signal to noise ratio of acoustic emission signal from defective bearings [PDF]

open access: yes, 2014
The use of Acoustic Emission (AE) to monitor the condition of roller bearings in rotating machinery is growing in popularity. This investigation is centred on the application of Spectral Kurtosis (SK) as a denoising tool able to enhance the bearing ...
Cao, Yi   +3 more
core   +1 more source

HYBRID DEEP FAULT DETECTION AND ISOLATION: COMBINING DEEP NEURAL NETWORKS AND SYSTEM PERFORMANCE MODELS

open access: yesInternational Journal of Prognostics and Health Management, 2019
With the increased availability of condition monitoring data on the one hand and the increased complexity of explicit system physics-based models on the other hand, the application of data-driven approaches for fault detection and isolation has recently ...
Manuel Arias Chao   +3 more
doaj   +1 more source

Ares I-X Ground Diagnostic Prototype [PDF]

open access: yes, 2010
The automation of pre-launch diagnostics for launch vehicles offers three potential benefits: improving safety, reducing cost, and reducing launch delays.
Martin, Rodney Alexander   +5 more
core   +2 more sources

Improving Aircraft Engines Prognostics and Health Management via Anticipated Model-Based Validation of Health Indicators [PDF]

open access: yes, 2014
The aircraft engines manufacturing industry is subjected to many dependability constraints from certification authorities and economic background. In particular, the costs induced by unscheduled maintenance and delays and cancellations impose to ensure a
LAMOUREUX, Benjamin   +2 more
core   +6 more sources

Building fault detection data to aid diagnostic algorithm creation and performance testing. [PDF]

open access: yes, 2020
It is estimated that approximately 4-5% of national energy consumption can be saved through corrections to existing commercial building controls infrastructure and resulting improvements to efficiency.
Chen, Yan   +4 more
core   +2 more sources

Diagnostic and Detection Fault Collapsing for Multiple Output Circuits [PDF]

open access: yesDesign, Automation and Test in Europe, 2005
We discuss fault equivalence and dominance relations for multiple output combinational circuits. The conventional definition for equivalence says that "Two faults are equivalent if and only if the corresponding faulty circuits have identical output functions".
Sandireddy, Raja K. K. R.   +1 more
openaire   +2 more sources

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash   +4 more
wiley   +1 more source

The Information-analytical System for Diagnostics of Aircraft Navigation Units [PDF]

open access: yes, 2006
The operation of technical processes requires increasingly advanced supervision and fault diagnostics to improve reliability and safety. This paper gives an introduction to the field of fault detection and diagnostics and has short methods classification.
Prokoshev, Ilya, Suminov, Vyacheslav
core  

An Investigation of Electrical Motor Parameters in a Sensorless Variable Speed Drive for Machine Fault Diagnosis [PDF]

open access: yes, 2016
Motor current signature analysis (MCSA) is regarded as an effective technique for motor and its downstream equipment fault diagnostics. However, limited work has been carried out for motors based on a sensorless variable speed drive (VSD).
Ball, Andrew   +3 more
core   +1 more source

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