Evaluation of rolling bearing vibration performance variation of the main steps

Evaluation of rolling bearing vibration performance variation of the main steps are as follows: ( 1) To serve the vibration of the rolling bearing in the different time stages during measurement, get different time phase sequence of rolling bearing vibration data. ( 2) The rolling bearing vibration data in absolute value, according to the order since the childhood, get absolute value collating sequence; According to the statistics, and find out the absolute order sequence of digits. ( 3) According to the principle of Huber M estimation, improve data obtained sequence; According to statistics, get improved average data sequence. ( 4) Get improved average sequence data and absolute value the absolute difference between the median collating sequence. ( 5) By collating sequence of absolute value of mean and median improve data sequence of absolute difference, get local proper interval. 6) By local intrinsic gain overall intrinsic interval. ( 7) Rolling bearing vibration performance can be obtained through the general eigenvalue interval variation rate. ( 8) By the variation rate of detection of rolling bearing vibration performance degradation conditions.