LIN C L, LIN J L, KO T C. Optimisation of the edm process based on the orthogonal array with fuzzy logic and grey relational analysis method[J]. The International Journal of Advanced Manufacturing Technology,2002,19(4):271-277.
[2]
KHURI A I, VALEROSO E S. Optimization methods in multiresponse surface methodology in statistical process monitoring and optimization[M]. New York, N.Y.,USA:Marcel Dekker,1999.