对该信号进行自相关分析，自相关消噪后故障信号如图所示，经自相关处理后原

The autocorrelation analysis is performed on the signal. The fault signal is shown in the figure after the autocorrelation denoising. After the autocorrelation process, the periodic characteristics of the original signal have not changed, and the modulation characteristics are more obvious. The main components of the original signal are retained in the frequency domain graph, which reduces random noise interference. The frequency domain spectral lines of the post-autocorrelation signal are clearer and have obvious noise reduction effects.

The signal is self-related analysis, the fault signal after the correlation noise cancellation is shown, the periodic characteristics of the original signal after the correlation processing have not changed, the modulation characteristics are more obvious. The main components of the original signal are preserved in the frequency domain map, the random noise interference is reduced, and the frequency domain spectrum line of the post-correlation signal is clearer and has a significant noise reduction effect. ...

After autocorrelation analysis, the fault signal after autocorrelation denoising is as shown in the figure. After autocorrelation processing, the periodic characteristics of the original signal have not changed, and the modulation characteristics are obvious. In the frequency domain, the main components of the original signal are retained, and the random noise interference is reduced. After autocorrelation, the frequency spectrum of the signal is clearer and has obvious noise reduction effect.