Results 31 to 40 of about 8,566 (306)

Data-Driven Fault Diagnostics for Industrial Processes: An Application to Penicillin Fermentation Process

open access: yesIEEE Access, 2021
We consider the problem of fault detection and isolation for the penicillin fermentation process. A penicillin fermentation process is a highly complex and nonlinear dynamic process with batch processing.
Muhammad Asim Abbasi   +5 more
doaj   +1 more source

Tacholess Time Synchronous Averaging for Gear Fault Diagnosis in Wind Turbine Gearboxes Using a Single Accelerometer

open access: yesMachines
Wind power is increasingly seen as a global, sustainable, and eco-friendly energy option. However, one significant obstacle to further wind energy investment is the high failure rate of wind turbines.
Trong-Du Nguyen   +3 more
doaj   +1 more source

Spectrogram Zeros Method for Rolling Bearing Fault Diagnosis Under Variable Rotating Speeds

open access: yesIEEE Access
Diagnosing rolling bearing faults is critical for maintaining machinery reliability, as these components are essential in reducing friction in rotating systems.
Trong-Du Nguyen   +3 more
doaj   +1 more source

Prony Method Estimation as a New Approach for Surge Comparison Testing in Turn Insulation Diagnostics for Three Phase Stator Windings

open access: yesMachines, 2023
This article presents an evaluation of Prony method estimation and its implementation considerations for surge comparison test application in turn insulation diagnostics for three-phase stator windings.
Luis Alonso Trujillo Guajardo   +5 more
doaj   +1 more source

System fault diagnostics using fault tree analysis [PDF]

open access: yesProceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2007
Over the last 50 years, advances in technology have led to an increase in the complexity and sophistication of systems. More complex systems can be harder to maintain and the root cause of a fault more difficult to isolate. Downtime resultin from a system failure can be dangerous or expensive, depending on the type of system.
E. E. Hurdle   +2 more
openaire   +1 more source

Two Stage Helical Gearbox Fault Detection and Diagnosis based on Continuous Wavelet Transformation of Time Synchronous Averaged Vibration Signals [PDF]

open access: yes, 2012
Vibration signals from a gearbox are usually very noisy which makes it difficult to find reliable symptoms of a fault in a multistage gearbox. This paper explores the use of time synchronous average (TSA) to suppress the noise and Continue Wavelet ...
Gu, Fengshou   +8 more
core   +1 more source

Improvements in the Wavelet Transform and Its Variations: Concepts and Applications in Diagnosing Gearbox in Non-Stationary Conditions

open access: yesApplied Sciences
Wavelet transform is a powerful time-frequency-based analysis method often used in gear fault diagnostics. The development of wavelet transform is closely linked to the improvement of resolution.
Trong-Du Nguyen, Phong-Dien Nguyen
doaj   +1 more source

A One-Versus-All Class Binarization Strategy for Bearing Diagnostics of Concurrent Defects

open access: yesSensors, 2014
In bearing diagnostics using a data-driven modeling approach, a concern is the need for data from all possible scenarios to build a practical model for all operating conditions.
Selina S. Y. Ng   +2 more
doaj   +1 more source

Fault Diagnosis of Induction Motor Based on a Novel Intelligent Framework and Transient Current Signals [PDF]

open access: yes, 2013
This paper deals with fault diagnosis of induction motor containing common faults by using a novel intelligent framework and transient stator current signals. This framework consists of a Fourier-Bessel (FB) expansion for analyzing the transient signals,
Tran, V.T.   +8 more
core   +1 more source

Condition monitoring of PARR-1 rotating machines by vibration analysis technique [PDF]

open access: yesNuclear Technology and Radiation Protection, 2014
Vibration analysis is a key tool for preventive maintenance involving the trending and analysis of machinery performance parameters to detect and identify developing problems before failure and extensive damage can occur.
Qadir Javed   +3 more
doaj   +1 more source

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