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서한원,두승,서남섭 전북대학교 공업기술연구소 2000 工學硏究 Vol.31 No.-
Recently, with the development of NC and CNC machine tools and the high labor wage, the cutting process requires the high speed; and automatic system which uses industrial robots and the flexible manufacturing system(FMS) that combines several machine tools. In this system, the whole system can be influenced by just one of the machine tools. So it needs to detect a problem and to solve it immediately in in-process state. The monitoring system through measuring the motor current with current sensor has been attracting the attention of lots of researchers' view of its low cost and flexibility. By using the pattern discriminant, coefficient of variableness with the detected three-phase-current signal, that is, I_RMS, a system which can monitor and analyze chatter condition of the workpiece during the machining will be able to be developed in this research.