Fuzzy logic recognition device which determines the mode of an unknown move using fuzzy set theory

摘要

A fuzzy logic recognition device has a plurality of sets of feature extraction windows, each set storing the predetermined features for one feature class therein, and comparing the stored features with the corresponding features of an unknown recognition mode to output a logic "1" via one corresponding feature extraction window where an identicalness condition occurs, and logic "0" via the other feature extraction windows where no identicalness condition occurs. A plurality of sets of membership function generators are coupled to the feature extraction window sets respectively. Each membership function generator which receives the logic "1" generates the memberships of the corresponding feature with respect to the target modes, and the membership function generators which receive the logic "0" do not generate the memberships. A minimum gate is coupled to the membership function generator sets for comparing the memberships with respect to the same target mode, respectively, and for outputting the smallest membership for every one of the target modes. A maximum gate is coupled to the minimum gate for comparing the memberships outputted from the minimum gate means, and for outputting the largest membership to indicate that the unknown recognition mode is which one of the target mode.