Recent developments in model-based fault detection and diagnostics of gas pipelines under transient conditions

MM Syed, TA Lemma, SK Vandrangi, TN Ofei - Journal of Natural Gas …, 2020 - Elsevier
Gas pipelines are prone to faults due to aging, corrosion, and external factors. Undetected
faults can result in injuries, damage to properties, and environmental contamination. Several …

[HTML][HTML] Leakage detection in water distribution networks via 1D CNN deep autoencoder for multivariate SCADA data

HM Tornyeviadzi, R Seidu - Engineering Applications of Artificial …, 2023 - Elsevier
Leakages are undesirable events in water distribution networks (WDNs) with mostly
unknown incident time making it extremely difficult to accurately label leaks in distribution …

[HTML][HTML] Consistency index-based sensor fault detection system for nuclear power plant emergency situations using an LSTM network

J Choi, SJ Lee - Sensors, 2020 - mdpi.com
A nuclear power plant (NPP) consists of an enormous number of components with complex
interconnections. Various techniques to detect sensor errors have been developed to …

Actuator fault estimation based on a proportional-integral observer with nonquadratic Lyapunov functions

J Guzman, FR López-Estrada… - … Journal of Systems …, 2021 - Taylor & Francis
This work proposes a proportional-integral fault estimation observer for nonlinear systems
by means of convex structures. Unlike the traditional approaches that consider quadratic …

Selective weighted multi-scale morphological filter for fault feature extraction of rolling bearings

J Yu, C Xiao, T Hu, Y Gao - ISA transactions, 2023 - Elsevier
Morphological filtering shows effectiveness in vibration signal analysis because of its
simplicity and efficiency. Considering that different structural elements have different effects …

Leak detection and location of flanged pipes: An integrated approach of principle component analysis and guided wave mode

X Diao, Z Chi, J Jiang, A Mebarki, L Ni, Z Wang, Y Hao - Safety Science, 2020 - Elsevier
As flanged pipes have a crucial role in oil and gas transportation, accidental leaks and their
detection are of great importance, and represent a great concern in safety management of …

[HTML][HTML] A comprehensive fault diagnosis method for rolling bearings based on refined composite multiscale dispersion entropy and fast ensemble empirical mode …

W Zhang, J Zhou - Entropy, 2019 - mdpi.com
This study presents a comprehensive fault diagnosis method for rolling bearings. The
method includes two parts: the fault detection and the fault classification. In the stage of fault …

[HTML][HTML] Leak detection in gas mixture pipelines under transient conditions using Hammerstein model and adaptive thresholds

SM Mujtaba, TA Lemma, SAA Taqvi, TN Ofei… - Processes, 2020 - mdpi.com
Conventional leak detection techniques require improvements to detect small leakage (<
10%) in gas mixture pipelines under transient conditions. The current study is aimed to …

[HTML][HTML] AIN-based MEMS (micro-electro-mechanical system) hydrophone sensors for IoT water leakage detection system

WK Phua, SM Rabeek, B Han, E Njihof, TT Huang… - Water, 2020 - mdpi.com
There is an urgent need for industrial Internet of things (IoT) solutions to deploy a smart
hydrophone sensor grid to monitor pipeline health and to provide an accurate prediction in …

[HTML][HTML] Fault feature extraction of hydraulic pumps based on symplectic geometry mode decomposition and power spectral entropy

Z Zheng, G Xin - Entropy, 2019 - mdpi.com
Aiming at fault feature extraction of a hydraulic pump signal, a new method based on
symplectic geometry mode decomposition (SGMD) and power spectral entropy (PSE) is …