Abstract:
Linear subordinate function, dualistic relative comparison and etc. are adopted to specify the subordinate degree of the characteristic factors and to formulate the fuzzy subsets for different types of mechanical drives. The average of distances, those between every vector space corresponding to each subset and the vector space corresponding to the specific fuzzy subset to be identified, is chosen as the degree of closing. Consequently, the needed type of mechanical drives could be fixed on the basis of "selecting closing" rule.