The invention discloses an electric
welding machine intelligent operation and
maintenance management method and
system based on
machine learning, and belongs to the technical field of operation and
maintenance management, and the method comprises the steps of electric
welding machine operation and maintenance
data integration, electric
welding machine fault detection, electric welding machine residual life prediction and electric welding machine intelligent operation and
maintenance management. According to the scheme, the original importance
score is calculated based on the Gini
impurity reduction amount, the weighted importance
score of the features is obtained in combination with the fault
correlation coefficient, the key
feature set is constructed based on the accumulated
score, the comprehensive confidence of the
decision tree is obtained, the class weight compensation factor is introduced for correction, and the accuracy and reliability of fault detection are improved; based on the calibrated degradation complexity, a dynamic window increment is calculated, a multi-scale window set is constructed, a multi-scale sample is generated, a full connection graph is constructed, and weighted
frequency domain features are obtained in combination with the degradation stage, so that the prediction precision of the remaining service life is improved, and a reliable basis is provided for operation and maintenance management of the electric welding machine.