The invention provides an intelligent pneumatic conveying
system and a fault diagnosis method thereof, and relates to the technical field of industrial
automation control, and the method comprises the steps: dividing multi-channel original
time sequence data, constructing a first
data set and a second
data set, according to the sensor abnormal
data detection and
restoration method based on the improved VAE, abnormal
data detection and restoration are carried out on data of the first
data set, and
noise reduction
processing is carried out on data of the second data set based on a self-adaptive
noise reduction
processing method. According to the method, by constructing the double-path
deep learning network, the
system macroscopic state and the component microscopic dynamic state are deeply fused, accurate early diagnosis is achieved, in combination with an innovative intelligent data preprocessing mechanism, the
data quality and the model robustness are effectively improved, the adaptive
feature fusion and confidence evaluation functions are achieved, and the reliability of the
system is improved. The system has excellent generalization ability and decision safety, the non-planned shutdown and maintenance cost can be remarkably reduced, and the reliability and economical efficiency of system operation are improved.