Research on automatic construction method of interval value rules for the abrasive media based on hierarchical classification

The barrel finishing is an important part of finished machining in advanced manufacturing technology, and the abrasive media is the key factor affecting the machining effect and efficiency. Rules construction is the key to the expert system being applied to the optimization of the abrasive media in the barrel finishing. Currently, when the type of parts has changed, the abrasive media optimization accuracy of the original expert reasoning model decreased. Therefore, the paper proposes an automatic construction method of interval value rules for the abrasive media based on hierarchical classification. Firstly, the existing case base is optimized by the improved fuzzy C-means (FCM) algorithm of the subtraction cluster to obtain the training set. Secondly, each eigenvalue grade and the affiliated interval are determined, and the improved hierarchical classification generating representation is used to establish interval value rules. Finally, simulation results show that the comprehensive accuracy of the improved expert reasoning model is 93.76%, whichis3.29% higher than the original expert reasoning model, and the decision-making guidance for the development of new processes is provided.