“…b m small ð:Þ denotes the antecedent membership function for small and f small ð:Þ denotes the linear or nonlinear functions for the consequent part of this rule. Lin and Lee (1991) Bell AND/product Bell WA, COA Berenji and Khedkar (1992) Triangular AND/soft-min Triangular LMOM Nie and Linkens (1993) Bell AND/product Singleton WA Jang (1993) Bell AND/product Singleton WA Vuorimaa (1994) Triangular AND/min Singleton WA Horikawa et al (1992) Bell AND/product Singleton WA,TSK FREN G/Sigmoid -LCs PS Note: MF, WA, COA, LMOM, TSK and PS denote the membership function, the weight average, the center of area, the localized mean of maximum, the Tsukamoto defuzzification (Horikawa et al, 1992;Takagi and Sugeno, 1992) and parallel structure, respectively. Bell, Triangular and Singleton are the types of membership functions.…”