Liang YE, Sier DENG, Yongcun CUI, et al. Grey relation analysis on nonlinear characteristics and uncertainty characteristics of evolution of rolling bearing vibration performance state[J]. Journal of Aerospace Power, 2022, 37(6): 1121-1133.
DOI:
Liang YE, Sier DENG, Yongcun CUI, et al. Grey relation analysis on nonlinear characteristics and uncertainty characteristics of evolution of rolling bearing vibration performance state[J]. Journal of Aerospace Power, 2022, 37(6): 1121-1133.DOI: 10.13224/j.cnki.jasp.20210686.
Grey relation analysis on nonlinear characteristics and uncertainty characteristics of evolution of rolling bearing vibration performance state
In order to more comprehensively and effectively monitor the evolution process of vibration performance state of rolling bearing in service,the nonlinear and uncertainty features of evolution of vibration performance state were characterized by correlation dimension and box dimension,the fluctuation ranges of instantaneous value and average value of vibration data.The grey confidence level between the parameter sequences was solved by using the grey relation analysis method,so as to analyze the nonlinear correlation degree between the nonlinear and uncertain characteristics of the evolution of the bearing vibration performance state.Two cases showed that the correlation dimension and box dimension had a trend of decrease,and the fluctuation ranges of instantaneous value and average value had a trend of increase on the whole.Moreover,they had corresponding relationships at the discontinuity points in a sense.There were negative correlation relationships among nonlinear parameters and uncertain parameters.Besides,the grey confidence levels between sequences of uncertain parameters and correlation dimension were higher than the uncertainty parameters and box dimension.
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