A new fault detection approach based on parity relation and stationary wavelet transform

2004 ◽  
Author(s):  
Hao Ye ◽  
Guizeng Wang ◽  
S.X. Ding
Keyword(s):  
Wavelet Transform ◽  
Fault Detection ◽  
Stationary Wavelet Transform ◽  
Detection Approach ◽  
Parity Relation

Adaptive fault detection of the bearing in wind turbine generators using parameterless empirical wavelet transform and margin factor

2019 ◽  
Vol 25 (6) ◽  
pp. 1263-1278 ◽  
Author(s):  
Wei Teng ◽  
Wei Wang ◽  
Haixing Ma ◽  
Yibing Liu ◽  
Zhiyong Ma ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Fault Detection ◽  
Wind Turbines ◽  
Vibration Signal ◽  
Scale Space ◽  
Operating Conditions ◽  
Turbine Generators ◽  
Detection Approach ◽  
Empirical Wavelet Transform ◽  
Fault Information

Wind turbines revolve in difficult operating conditions due to stochastic loads and produce massive vibration signals, which cause obstacles in detecting potential fault information. To overcome this, an adaptive fault detection approach is presented in this paper on the basis of parameterless empirical wavelet transform (PEWT) and the margin factor. PEWT can decompose the vibration signal into a series of empirical modes (EMs) through splitting its Fourier spectrum, using the scale space method and adaptively constructing an orthogonal wavelet filter bank. The margin factor is utilized as a key metric for automatically selecting the EM which is sensitive to the potential faults. The method presented in this paper will improve the efficiency and accuracy of fault information for the condition monitoring of wind turbines.

Quadratic‐wavelet‐transform‐based fault detection approach for temperature sensor

2018 ◽  
Vol 14 (1) ◽  
pp. 148-156 ◽  
Author(s):  
Xiaojia Han ◽  
Aidong Xu ◽  
Kai Wang ◽  
Haifeng Guo ◽  
Ning Zhang ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Fault Detection ◽  
Temperature Sensor ◽  
Detection Approach

Stationary wavelet transform for fault detection in rotating machinery

2007 ◽  
Author(s):  
Serhat Seker ◽  
Erinc Karatoprak ◽  
A. H. Kayran ◽  
Tayfun Senguler
Keyword(s):  
Wavelet Transform ◽  
Fault Detection ◽  
Rotating Machinery ◽  
Stationary Wavelet Transform
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