Circuit and method for evaluating fuzzy logic rules

Details Circuit and method for evaluating fuzzy logic rules Circuit and method for evaluating fuzzy logic rules

1992-06-17

1993-11-16

Fleming, Michael R.

395 3, 395 11, 395 61, 395900, G06F 1518

Patent

active

052631257

ABSTRACT:
A circuit (14) to evaluate a plurality of fuzzy logic rules in a data processor (10) in response to a single "REV" software instruction. The REV instruction evaluates the rules stored in a memory (32) to determine a rule strength of each. Antecedents are separated from consequences of each of the rules by a buffer address. To evaluate the antecedents, an ALU (52) subtracts an antecedent in memory (32) from a current antecedent stored in an accumulator (58). Subsequently, a swap logic (46) provides control information to assign a minimum value as a rule strength of the rule. Similarly, a maximum rule strength is required during evaluation of the consequences. ALU (52) subtracts a consequence in memory (32) from a consequence stored in accumulator (58). Depending on a result, swap logic (46) provides control information to assign a maximum rule strength to the consequences of the evaluated rule.

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User's Manual entitled "FP-3000 Digital Fuzzy Processor User's Manual" published by Omron Corporation.

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