Volume 30 Issue 8
Aug.  2015
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XU Yong-zhi, XIA Xin-tao, NAN Xiang. Dynamic analysis of the robust test data on rolling bearing vibration based on chaos theory[J]. Journal of Aerospace Power, 2015, 30(8): 1958-1966. doi: 10.13224/j.cnki.jasp.2015.08.020
Citation: XU Yong-zhi, XIA Xin-tao, NAN Xiang. Dynamic analysis of the robust test data on rolling bearing vibration based on chaos theory[J]. Journal of Aerospace Power, 2015, 30(8): 1958-1966. doi: 10.13224/j.cnki.jasp.2015.08.020

Dynamic analysis of the robust test data on rolling bearing vibration based on chaos theory

doi: 10.13224/j.cnki.jasp.2015.08.020
  • Received Date: 2014-11-17
  • Publish Date: 2015-08-28
  • The improved Huber M method which fuse to two robust processings of median and Huber M method was proposed to solve the robust processing of data. The similarity of the median and average value was given to judge whether the variation data exist, the variation rate were determined by trend of the variation rate. Within the variation rate range of 0%-10%, the continuity and credibility of the rolling bearing vibration data increase with the increasing of the variation rate. The dynamic characteristics of rolling bearings were analyzed by using chaos theory. Time delay, embedding dimension and the maximum Lyapunov index of vibration data are the same on the same batch of rolling bearing. And the maximum Lyapunov index which is bigger than 0, show that the dynamic characteristic on rolling bearing vibration belongs to chaos characteristics, moreover the maximum forecast cycle are calculated, namely 667 unit. The nonlinear and monotonicity of the median of physical space and estimated correlation dimension of phase space on rolling bearing vibration time series is the inner running mechanism on rolling bearing vibration, which provide reliable basis for further analysis.

     

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