Natural phase space reconstruction-based broad learning system for short-term wind speed prediction: Case studies of an offshore wind farm

X Xu, S Hu, P Shi, H Shao, R Li, Z Li - Energy, 2023 - Elsevier
Accurate prediction of wind speed can not only help to develop strategies for wind turbine
operation, but also reduce impact on power systems when wind energy is integrated into the …

An incorrect data detection method for big data cleaning of machinery condition monitoring

X Xu, Y Lei, Z Li - IEEE Transactions on Industrial Electronics, 2019 - ieeexplore.ieee.org
The presence of incorrect data leads to the decrease of condition-monitoring big data quality.
As a result, unreliable or misleading results are probably obtained by analyzing these poor-…

A spatio-temporal forecasting model using optimally weighted graph convolutional network and gated recurrent unit for wind speed of different sites distributed in an …

X Xu, S Hu, H Shao, P Shi, R Li, D Li - Energy, 2023 - Elsevier
Accurate wind speed forecasting plays an essential role in scheduling wind power generation.
Currently, most existing models predict wind speed just based on temporal features and …

Repetitive transient extraction for machinery fault diagnosis using multiscale fractional order entropy infogram

X Xu, Z Qiao, Y Lei - Mechanical Systems and Signal Processing, 2018 - Elsevier
The presence of repetitive transients in vibration signals is a typical symptom of local faults
of rotating machinery. Infogram was developed to extract the repetitive transients from …

Caputo-Fabrizio fractional order derivative stochastic resonance enhanced by ADOF and its application in fault diagnosis of wind turbine drivetrain

X Xu, B Li, Z Qiao, P Shi, H Shao, R Li - Renewable Energy, 2023 - Elsevier
Fault diagnosis of wind turbine drivetrains is vital to maintain the reliability of wind turbines
and stochastic resonance (SR) is regarded as a powerful method to amplify the fault-induced …

Fault transfer diagnosis of rolling bearings across multiple working conditions via subdomain adaptation and improved vision transformer network

P Liang, Z Yu, B Wang, X Xu, J Tian - Advanced Engineering Informatics, 2023 - Elsevier
Due to often working in the environment of variable speeds and loads, it is an enormous
challenge to achieve high-accuracy fault diagnosis (FD) of rolling bearings (RB) via existing …

An underdamped stochastic resonance method with stable-state matching for incipient fault diagnosis of rolling element bearings

Y Lei, Z Qiao, X Xu, J Lin, S Niu - Mechanical Systems and Signal …, 2017 - Elsevier
Most traditional overdamped monostable, bistable and even tristable stochastic resonance (SR)
methods have three shortcomings in weak characteristic extraction: (1) their potential …

TSN: A novel intelligent fault diagnosis method for bearing with small samples under variable working conditions

P Shi, S Wu, X Xu, B Zhang, P Liang, Z Qiao - Reliability Engineering & …, 2023 - Elsevier
Traditional deep learning methods rely on big data heavily, which makes bearing fault
diagnosis with small samples under variable working conditions a tricky problem. The extremely …

An intelligent fault diagnosis method enhanced by noise injection for machinery

C Yang, Z Qiao, R Zhu, X Xu, Z Lai… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Machinery generally operates under severe and complex conditions, and therefore, the
monitoring signals acquired from machinery would inevitably be accompanied by various types …

Myths and attitudes that sustain smoking in China

…, JM Samet, J Wang, C Mei, X Xu… - Journal of health …, 2008 - Taylor & Francis
<p>China is a particularly critical country for global tobacco control. It has the world's largest
number of smokers and is a prize target for the multinational tobacco companies. This article …