1993-04-29
1996-06-04
Downs, Robert W.
395 3, 395900, G06F 1300, G06F 944
Patent
active
055241794
ABSTRACT:
A fuzzy inference processing apparatus based on fuzzy rules represented by an if-then notation comprises a CPU having a software for obtaining grades of if-part membership functions with respect to input variables for each rule and a hardware for obtaining a truth value of the if-part of each rule, a truth value of the then-part of each rule, and an inference result. The hardware comprises a predetermined number of then-part membership function calculators for respectively storing the then-part membership functions defined in the then-part of the rules, minimum calculators respectively connected to the then-part membership function calculators, and a maximum calculation circuit connected to all the then-part membership function calculators. The CPU supplies the grades of the if-part membership functions for each rule to one of the minimum calculators which is connected to the then-part membership function calculator storing the then-part membership function defined in the then-part of the rule. The CPU outputs a predetermined number of grade regardless of the number of the input variables defined in the rule. The grade of the membership function is set to 1 where the input variable is not defined in the rule.
REFERENCES:
patent: 5036730 (1991-08-01), Sakai et al.
patent: 5131071 (1992-07-01), Tsutsumi et al.
patent: 5167005 (1992-11-01), Yamakawa
patent: 5202954 (1993-04-01), Miyazawa et al.
patent: 5280566 (1994-01-01), Nakamura
patent: 5335314 (1994-08-01), Tsutsumi et al.
patent: 5343553 (1994-08-01), Miyazawa et al.
Mamdani, E. H., "Application of Fuzzy Algorithms for Control of Simple Dynamic Plant," Proc. IEEE, vol. 121, No. 12, Dec. 1974, 1585-1588.
Chiu, et al, "Real-Time Fuzzy Control; From Linguistic Rules to Implementation on a Chip," Methodologies for Intelligent Systems; Proc., Oct. 1987, 17-24.
Mizumoto, M., "Realization of PID Controls by Fuzzy Control Methods", IEEE Int'l. Conf. on Fuzzy Systems, Mar. 1992, 709-715.
Downs Robert W.
Kabushiki Kaisha Toshiba
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