A hierarchical intelligent control system for milling machine

A new intelligent adaptive CNC system designed for a milling machine is presented. It is the first time a neural network controller has been applied successfully in the milling process. The direct neural network controller can obtain a constant milling force under varying milling conditions and adjusts its weights on-line without a specific pretraining stage or plant modeling. For improving the system´s intelligence level and its practicability, an expert controller is added so that the control system has a hierarchical structure. The milling experimental results show that the system has better control characteristics and can raise machining efficiency and tool protection