WT, spectral kurtosis and smooth iteration envelope analysis method for rolling bearing
A rolling bearing and envelope analysis technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as low technical accuracy, low analysis accuracy, and misjudgment
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[0090] Examples such as figure 1 , figure 2 , image 3 As shown, a rolling bearing WT, spectral kurtosis and smoothing iterative envelope analysis method, including the following steps:
[0091] Step 1: Use the acceleration sensor to measure the vibration signal x(k), (k=1, 2,...,N) of the rolling bearing at the sampling frequency fs, where N is the length of the sampling signal;
[0092] Step 2: Use the Wavelet Transform (WT) algorithm to decompose the signal x(k) into the sum of n components and a trend item, namely , where c i (k) represents the i-th component obtained by the wavelet decomposition algorithm, r n (k) represents the trend item obtained by the wavelet decomposition algorithm; n=15 in this example;
[0093] Step 3: to c i (k) Perform the rearrangement operation and replacement operation, and the data obtained by the rearrangement operation is represented by c i shuffle (k) indicates that the data obtained after the substitution operation is c i FTra...
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