Results 21 to 30 of about 7,327 (245)

Mechanical Compound Fault Analysis Method Based on Shift Invariant Dictionary Learning and Improved FastICA Algorithm

open access: yesMachines, 2021
For mechanical compound fault, it is of great significance to employ the vibration signal of a single-channel compound fault to analyze and realize the separation of multiple fault sources, which is essentially the problem of single-channel blind source ...
Haodong Yuan, Nailong Wu, Xinyuan Chen
doaj   +1 more source

Analysis of rotor winding interturn short circuits affected by the initial dynamic eccentricity in large synchronous condensers

open access: yesIET Electric Power Applications, 2022
To investigate the effect of initial dynamic eccentricity on the rotor winding turn‐to‐turn short circuit (RWISC) in a large synchronous condenser, this paper uses the study object of a 300 MVar dual water intercooler condenser. Firstly, the air gap flux
Minghan Ma   +5 more
doaj   +1 more source

A Deep Multi-Label Learning Framework for the Intelligent Fault Diagnosis of Machines

open access: yesIEEE Access, 2020
Deep learning has been applied in intelligent fault diagnosis of machines since it trains deep neural networks to simultaneously learn features and recognize faults.
Jianjun Shen   +4 more
doaj   +1 more source

Compound Faults Feature Extraction for Rolling Bearings Based on Parallel Dual-Q-Factors and the Improved Maximum Correlated Kurtosis Deconvolution

open access: yesApplied Sciences, 2019
Vibration analysis is one of the main effective ways for rolling bearing fault diagnosis, and a challenge is how to accurately separate the inner and outer race fault features from noisy compound faults signals.
Lingli Cui   +4 more
doaj   +1 more source

A New Method of Wheelset Bearing Fault Diagnosis

open access: yesEntropy, 2022
During the movement of rail trains, trains are often subjected to harsh operating conditions such as variable speed and heavy loads. It is therefore vital to find a solution for the issue of rolling bearing malfunction diagnostics in such circumstances ...
Runtao Sun   +3 more
doaj   +1 more source

Application of Deep Neural Network in Gearbox Compound Fault Diagnosis

open access: yesEnergies, 2023
Gearbox fault diagnosis is vital to ensure the efficient operation of rotating machinery, and most gearbox faults in industrial production occur in the form of compound faults. To realize the diagnosis of compound faults in gearboxes at different speeds,
Xiangfeng Zhang   +3 more
doaj   +1 more source

Compound Fault Diagnosis Method of Modular Multilevel Converter Based on Improved Capsule Network

open access: yesIEEE Access, 2022
When submodule (SM) compound fault occurs in the Modular multilevel converter (MMC), the time-domain waveform characteristics of output current and internal circuiting current of MMC are not obvious, especially on the condition of high-level MMC.
Longzhang Ke, Yi Liu, Yi Yang
doaj   +1 more source

Compound Fault Diagnosis of Aero-Engine Rolling Element Bearing Based on CCA Blind Extraction

open access: yesIEEE Access, 2021
Fault diagnosis of aero-engine spindle bearing is a critical technique of engine prognostics and health management. As is known that the diagnosis of compound fault of aero-engine spindle bearing is very difficult and easily affected by other vibration ...
Wei-Tao Zhang   +3 more
doaj   +1 more source

Sparsity-Oriented Nonconvex Nonseparable Regularization for Rolling Bearing Compound Fault under Noisy Environment

open access: yesShock and Vibration, 2020
Rolling bearing is widely used in rotating machinery and, at the same time, it is easy to be damaged due to harsh operating environments and conditions. As a result, rolling bearing is critical to the safe operation of the machinery devices.
Xiaocheng Li   +2 more
doaj   +1 more source

Research on the Sparse Representation for Gearbox Compound Fault Features Using Wavelet Bases

open access: yesShock and Vibration, 2015
The research on gearbox fault diagnosis has been gaining increasing attention in recent years, especially on single fault diagnosis. In engineering practices, there is always more than one fault in the gearbox, which is demonstrated as compound fault ...
Chunyan Luo   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy