This application relates to the field of printing equipment
condition monitoring technology, and discloses a method and
system for monitoring and fault early warning of the rotational state of printing rollers. By collecting vibration and temperature data of the printing rollers, a
time series decomposition algorithm is used to separate short-term fluctuations and long-term trends to obtain a trend sequence; the slope change of the trend sequence is calculated, and deterioration signs are captured by combining
signal strength and duration, generating a slope growth
pattern sequence; positive growth portions are identified and potential deterioration tendencies exceeding duration thresholds are marked, forming a labeling sequence; the deviation between cluster centers and normal ranges is calculated through
cluster analysis to obtain a deviation degree sequence; the deviation values are compared with thresholds to generate a candidate fault
signal set; finally, a fault progression
feature model is matched to determine and confirm the fault
signal set. This application can effectively capture early abnormal trends of the rollers, improve the accuracy of fault judgment, and is suitable for online
condition monitoring and intelligent early warning of printing equipment, realizing fault prediction and health management of the equipment.