Investigation of the friction-induced vibration of a novel four-way reversing valve using spectral kurtosis and number of peaks spectrum

2022 ◽  
Vol 166 ◽  
pp. 108425
Author(s):  
Huan Wang ◽  
Zhounian Lai ◽  
Dazhuan Wu ◽  
Kepeng Zhang ◽  
Mingchao Zheng
Keyword(s):  
Spectral Kurtosis ◽  
Friction Induced Vibration

COMPOUND FAULT DIAGNOSIS OF BEARINGS USING AN IMPROVED SPECTRAL KURTOSIS BY MAXIMUM CORRELATION KURTOSIS DECONVOLUTION (MCKD).

2020 ◽  
Vol 9 (8) ◽  
pp. 66-72
Keyword(s):  
Fault Diagnosis ◽  
Resonance Frequency ◽  
Background Noise ◽  
Maximum Correlation ◽  
Vibration Signals ◽  
Filter Length ◽  
Frequency Bands ◽  
Noise Interference ◽  
Spectral Kurtosis

This paper discusses the use of Maximum Correlation kurtosis deconvolution (MCKD) method as a pre-processor in fast spectral kurtosis (FSK) method in order to find the compound fault characteristics of the bearing, by enhancing the vibration signals. FSK only extracts the resonance bands which have maximum kurtosis value, but sometimes it might possible that faults occur in the resonance bands which has low kurtosis value, also the faulty signals missed due to noise interference. In order to overcome these limitations FSK used with MCKD, MCKD extracts various faults present in different resonance frequency bands; also detect the weak impact component, as MCKD also dealt with strong background noise. By obtaining the MCKD parameters like, filter length & deconvolution period, we can extract the compound fault feature characteristics.

Application of Spectral Kurtosis on vibration signals for the detection of cavitation in centrifugal pumps

2021 ◽  
Vol 182 ◽  
pp. 108289
Author(s):  
G. Mousmoulis ◽  
C. Yiakopoulos ◽  
G. Aggidis ◽  
I. Antoniadis ◽  
I. Anagnostopoulos
Keyword(s):  
Centrifugal Pumps ◽  
Vibration Signals ◽  
Spectral Kurtosis

Experimental and numerical studies of friction-induced vibration and noise and the effects of groove-textured surfaces

2014 ◽  
Vol 46 (2) ◽  
pp. 191-208 ◽  
Author(s):  
D.W. Wang ◽  
J.L. Mo ◽  
H. Ouyang ◽  
G.X. Chen ◽  
M.H. Zhu ◽  
...  
Keyword(s):  
Textured Surfaces ◽  
Numerical Studies ◽  
Friction Induced Vibration

scholarly journals Vibration analysis based on the spectrum kurtosis for adjustment and monitoring of ball bearing radial clearance

2018 ◽  
Vol 211 ◽  
pp. 06006 ◽  
Author(s):  
Anthimos Georgiadis ◽  
Xiaoyun Gong ◽  
Nicolas Meier
Keyword(s):  
Signal Analysis ◽  
Vibration Signal ◽  
Radial Clearance ◽  
Spectral Kurtosis ◽  
Vibration Data ◽  
Bearing Clearance ◽  
Bearing Condition Monitoring ◽  
Bearing Vibration ◽  
Vibration Signal Analysis

Vibration signal analysis is a common tool to detect bearing condition. Effective methods of vibration signal analysis should extract useful information for bearing condition monitoring and fault diagnosis. Spectral kurtosis (SK) represents one valuable tool for these purposes. The aim of this paper is to study the relationship between bearing clearance and bearing vibration frequencies based on SK method. It also reveals the effect of the bearing clearance on the bearing vibration characteristic frequencies This enables adjustment of bearing clearance in situ, which could significantly affect the performance of the bearings. Furthermore, the application of the proposed method using SK on the measured data offers useful information for predicting bearing clearance change. Bearing vibration data recorded at various clearance settings on a floating and a fixed bearing mounted on a shaft are the basis of this study

Noise reduction for desert seismic data using spectral kurtosis adaptive bandpass filter

2018 ◽  
Vol 67 (1) ◽  
pp. 123-131 ◽  
Author(s):  
Haitao Ma ◽  
Zebin Qian ◽  
Yue Li ◽  
Hongbo Lin ◽  
Dan Shao ◽  
...  
Keyword(s):  
Noise Reduction ◽  
Seismic Data ◽  
Bandpass Filter ◽  
Spectral Kurtosis

A novel FPGA-based system for real-time calculation of the Spectral Kurtosis: A prospective application to harmonic detection

Measurement ◽  
2016 ◽  
Vol 86 ◽  
pp. 101-113 ◽  
Author(s):  
Ángel Quirós-Olozábal ◽  
Juan-José González-de-la-Rosa ◽  
María-Ángeles Cifredo-Chacón ◽  
José-María Sierra-Fernández
Keyword(s):  
Real Time ◽  
Harmonic Detection ◽  
Spectral Kurtosis ◽  
Time Calculation ◽  
Prospective Application
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