Study on Closed-Loop Servo Control System and Background Service Based on CNC

In order to find and treat fault or abnormal occurrences in numerically controlled machine tool of flexible manufacturing system in real-time, a study for computer numerically controlled (CNC) on-line fault diagnostics system has been carried out. The system can look up one or more sticking points of numerically controlled machine tool fault simply, locate CNC faults rapidly and accurately, but solve the problem between fault diagnosis and knowledge application. To provide CNC apparatus terminal with reliable trouble shooting suggestion, give a deep analysis between servo control subassembly and background service, make a description of fault database and test procedure design. The research has solved the problem of system maintenance, expansion and upgrade.