Optimal Hermitian Wavelet Filtering and Envelope Spectrum Based Bearing Defect Diagnosis
نویسندگان
چکیده
منابع مشابه
Multi-Scale Hermitian Wavelet Order Envelope Spectrum Based Bearing Fault Detection and Diagnosis
The multi-scale Hermitian wavelet order envelope spectrum based bearing fault detection and diagnosis method under run-up condition is presented in this paper. This new approach based on the fusion of the computed order tracking, Hermitian wavelet transform and envelope spectrum is used for detection defects in roller element bearings. Firstly, Non-stationary vibration signal under run-up condi...
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The bearing characteristic frequencies (BCF) contain very little energy, and are usually overwhelmed by noise and higher levels of macro-structural vibrations. They are difficult to find in their frequency spectra when using the common technique of fast fourier transforms (FFT). Therefore, Envelope Detection (ED) has always been used with FFT to identify faults occurring at the BCF. However, th...
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The methodology of vibration based condition monitoring technology has been developing at a rapid stage in the recent years suiting to the maintenance of sophisticated and complicated machines. The ability of wavelet analysis to efficiently detect non-stationary, non-periodic, transient features of the vibration signal makes it a demanding tool for condition monitoring. In this paper, the vibra...
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In recent years, improvement has been achieved in vibration signal processing, using wavelet analysis for condition monitoring and fault diagnosis. The use of wavelet analysis has proven to be efficient to detect faults in vibration signals with nonstationary, transient characteristics/ components. An experimental data set is used to compare the diagnostic capability of the fast Fourier transfo...
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Tang Hong-bin, Wu Yun-xin , Liao Zhi-qi 1,First College of Mechanical and Electrical Engineering,Central South University, Changsha,China, [email protected] 1,First Author College of Automobile and Mechanical Engineering, Changsha University of Science and Technologyy,Changsha, China, [email protected] *2,Corresponding College of Automobile and Mechanical Engineering, Central South University, Chan...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2020
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/1626/1/012149