Hierarchical, Knowledge-Based Control in Turning

A heirarchical, knowledge-based controller has been developed and implemented on a CNC lathe. The system consists of an intelligent supervisor and two control subsystems. These elements are realized as concurrent tasks in a real time, multitasking system. For each tool pass, a parameter adaptive control subsystem maximizes tool feed within tool breakage and tool edge chipping constraints. A second subsystem adjusts the depth of cut on-line in …