STUDY ON NON-SATIONARY VIBRATION SIGNALS USING FRACTAL DIMENSION

摘要

This paper introduces fractal theory into the fields of non-stationary vibration signals of the mechanical facilities. How to calculate the correlation dimension is the keystone and target of this paper, which includes how to choose the embedded dimension of phase space reconstruction from the original time series, the decision of time delay, the defining of fractal scale independent, the sampling number of time series and etc. The result proves the method in this paper to describe the non-stationary signals is applicable, and is effective in the fault diagnosis and condition monitoring of machine facilities.