Method and device for fault diagnosis of a sliding bearing in rotating machinery

A device for establishing a fault diagnosis model of a sliding bearing in rotating machinery, the device comprising:

• an orbit data set obtaining module configured to obtain a signal data set of displacement signals of shaft vibration of the sliding bearing in rotating machinery;
• an orbit data set processing module configured to:
• classify and archive the displacement signals of the shaft vibration in the signal data set according to fault types, and
• synthesize the displacement signals in the archived signal data set to obtain a plot of shaft center orbit of the sliding bearing in the rotating machinery, so as to obtain a plot data set of the shaft center orbit;
• and
• an orbit identification modeling module configured to train the fault diagnosis model based on the plot data set of the shaft center orbit.

A device for fault diagnosis of a sliding bearing in rotating machinery, the device comprising:

• an orbit data obtaining module configured to obtain displacement signals of shaft vibration of the sliding bearing in the rotating machinery to be diagnosed;
• an orbit data processing module configured to synthesize the displacement signals of the shaft vibration to obtain a plot of shaft center orbit of the sliding bearing in the rotating machinery to be diagnosed;
• and
• an orbit analysizing module configured to utilize a fault diagnosis model to diagnose the fault type of the sliding bearing in the rotating machinery to be diagnosed, based on the plot of the shaft center orbit of the sliding bearing in the rotating machinery to be diagnosed.