... ascomputer integrated manufacturing (CIM) and flexible manufacturing systems (FMS). However, many manufacturing processes involve some aspects of metal cutting operations. The most crucial and deter-mining ... and the estimated value of the spindle and feed current, namely, Si and Fi (i = 1, 2, . . . , 6) are outputted. Second, the spindle and feed currentdetected are put into the logarithm, and ... Fuzzy Sets and Systems, vol. 65, pp. 1-12.20. Li, X. and Dong, S., 1999, Intelligent Monitoring Technology in Advanced Manufacturing, SciencePress of China.21. Li, X., Dong, S. and Venuvinod,...