Results 11 to 20 of about 3,091,102 (249)

Fault severity diagnosis of rolling element bearings based on kurtogram and envelope analysis [PDF]

open access: yes, 2014
Faults in rolling element bearing are among the main causes of breakdown in rotating machines. Vibration is an effective technique for machine condition monitoring.
Gu, Fengshou   +6 more
core   +5 more sources

Photovoltaic Array Fault Diagnosis and Localization Method Based on Modulated Photocurrent and Machine Learning

open access: yesSensors
Photovoltaic arrays are exposed to outdoor conditions year-round, leading to degradation, cracks, open circuits, and other faults. Hence, the establishment of an effective fault diagnosis system for photovoltaic arrays is of paramount importance. However,
Yebo Tao, Tingting Yu, Jiayi Yang
doaj   +2 more sources

Blade Rub-Impact Fault Identification Using Autoencoder-Based Nonlinear Function Approximation and a Deep Neural Network. [PDF]

open access: yesSensors (Basel), 2020
A blade rub-impact fault is one of the complex and frequently appearing faults in turbines. Due to their nonlinear and nonstationary nature, complex signal analysis techniques, which are expensive in terms of computation time, are required to extract ...
Prosvirin AE, Piltan F, Kim JM.
europepmc   +2 more sources

Least order fault and model detection using multi-models [PDF]

open access: yes, 2009
Multi-model based fault detection is often a viable alternative to various multi-model based state estimation techniques using banks of Kalman filters.
A. Varga, Varga, Andreas
core   +1 more source

Fault estimation and fault-tolerant control for discrete-time dynamic systems [PDF]

open access: yes, 2015
In this paper, a novel discrete-time estimator is proposed, which is employed for simultaneous estimation of system states, and actuator/sensor faults in a discrete-time dynamic system.
Gao, Zhiwei
core   +1 more source

Real-time fault diagnosis and fault-tolerant control [PDF]

open access: yes, 2015
This "Special Section on Real-Time Fault Diagnosis and Fault-Tolerant Control" of the IEEE Transactions on Industrial Electronics is motivated to provide a forum for academic and industrial communities to report recent theoretic/application results in ...
Cecati, Carlo   +2 more
core   +1 more source

Application of a Combined Active Control and Fault Detection Scheme to an Active Composite Flexible Structure. [PDF]

open access: yes, 2006
In this paper, the problem of increasing reliability of active control procedure is considered. Indeed, a design method of rejection perturbation in presence of potentially faults, on a flexible structure with integrated piezo-ceramics, is presented. The
VERGÉ, Michel   +3 more
core   +1 more source

Fault Data Detection of Traffic Detector Based on Wavelet Packet in the Residual Subspace Associated with PCA

open access: yesApplied Sciences, 2019
To improve the accuracy and efficiency of fault data identification of traffic detectors is crucial in order to decrease the probability of unexpected failures of the intelligent transportation system (ITS).
Xiaolu Li   +3 more
doaj   +1 more source

Identification Method for Pulse Wave Resulted From Fault Transient of Overhead Transmission Line

open access: yesIEEE Access, 2023
This paper presents a simple and effective method to extract the identification quantity of transient pulse waveform produced by the overhead transmission line short-circuit fault.
Yue Yu   +4 more
doaj   +1 more source

Study on a Novel Fault Damage Degree Identification Method Using High-Order Differential Mathematical Morphology Gradient Spectrum Entropy

open access: yesEntropy, 2018
A damage degree identification method based on high-order difference mathematical morphology gradient spectrum entropy (HMGSEDI) is proposed in this paper to solve the problem that fault signal of rolling bearings are weak and difficult to be ...
Huimin Zhao   +5 more
doaj   +1 more source

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