System for synthesizing new fuzzy rule sets from existing fuzzy rule sets
First Claim
1. A fuzzy rule generator for generating new fuzzy rules based upon a plurality of existing basic sets of fuzzy rules, comprising:
- a memory device for storing said plurality of basic sets of fuzzy rules;
selection means coupled to said memory device for accessing said memory device and selecting therefrom at least two sets of existing basic sets of fuzzy rules from said stored plurality of existing basic sets of fuzzy rules; and
a rule synthesizer connected to an output of said selection means which produces a new set of fuzzy rules by combining together the selected at least two basic sets of fuzzy rules in accordance with a predetermined set of rules for combining said selected at least two sets of fuzzy rules to form said new set of fuzzy rules.
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Abstract
A fuzzy rule generator for generating fuzzy rules, comprising: a selection unit for selecting two or more sets of rules from a plurality of basic sets of rules which may be stored in memory; and a control unit for generating a new set of rules by carrying out a synthetic arithmetic operation based on a predetermined set of rules for synthesis. This process of synthesis may simply consist of addition or subtraction. Thereby, a new set of rules can be easily generated by carrying out a simple arithmetic operation for each application. Therefore, generation and modification of rules are simplified and speeded up, with additional benefits arising from an efficient utilization of existing sets of rules. Further, by imposing a constraint on the newly synthesized set of rules manually, automatically or by a combination of both according to a predefined algorithm, it is possible not only to ensure the stability of the system but also to obtain desired control characteristics. If desired, the newly created sets of rules may be added to the library of the basic sets of fuzzy rules.
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Citations
18 Claims
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1. A fuzzy rule generator for generating new fuzzy rules based upon a plurality of existing basic sets of fuzzy rules, comprising:
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a memory device for storing said plurality of basic sets of fuzzy rules; selection means coupled to said memory device for accessing said memory device and selecting therefrom at least two sets of existing basic sets of fuzzy rules from said stored plurality of existing basic sets of fuzzy rules; and a rule synthesizer connected to an output of said selection means which produces a new set of fuzzy rules by combining together the selected at least two basic sets of fuzzy rules in accordance with a predetermined set of rules for combining said selected at least two sets of fuzzy rules to form said new set of fuzzy rules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for generating new fuzzy rules based upon a plurality of existing basic sets of fuzzy rules, comprising:
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storing said plurality of existing basic sets of fuzzy rules in a memory device; selecting from said memory device at least two sets of said existing basic sets of fuzzy rules from said plurality of stored existing basic sets of fuzzy rules; and synthesizing a new set of fuzzy rules by combining the selected at least two sets of fuzzy rules in accordance with a predetermined set of combination rules to form the new set of fuzzy rules. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification