EP0355716A2
Expired / Lapsed
EP
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Rule generating apparatus and method of generating rules for fuzzy inference
Assignee: Omron Corp
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Filing: 1989-08-17
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Granted: —
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Expires: 2009-08-17
Abstract
Abstract Applicable rules (IF-THEN rules) are generated with use of predetermined membership functions concerning input and output variables in response to entry of input and output values. Accordingly, time and labor required to make rules can be simplified. In addition, it can be also verified, by making fuzzy inferences according to the generated rules, whether or not the rules are appropriate.
Inventors
- 👤 Takeshi Yamakawa
- 👤 Tsutomu Patent Center Ishida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 18:17
CPC Classifications
G; G06; G06N; G06N5/00; G06N5/04; G06N5/048; G06N7/00; G06N7/02; G06N7/026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
A rule generating apparatus for fuzzy control, comprising; means for storing a plurality of predetermined membership functions for fuzzy control concerning an input variable and a plurality of predetermined membership functions for fuzzy control concerning an output variable; means for inputting paired data comprising a predetermined input value and an output value to be obtained by a fuzzy inference when the predetermined input value is given; first processing means for finding degrees of adaptation of the given input value to the plurality of membership functions concerning the input variable, to extract a membership function concerning which the found degree of adaptation exceeds a required first reference degree of adaptation; second processing means for finding degrees of adaptation of the given output value to the plurality of membership functions concerning the output variable, to extract a membership function concerning which the found degree of adaptation exceeds a required second reference degree of adaptation; and means for outputting the extracted membership functions concerning the input and output variables.
Claim 2
Dependent Claim
166 words
A rule generating apparatus for fuzzy control, comprising; means for storing a plurality of predetermined membership functions for fuzzy control concerning an input variable and a plurality of predetermined membership functions for fuzzy control concerning an output variable; means for inputting paired data comprising a predetermined input value and an output value to be obtained by a fuzzy inference when the predetermined input value is given; first processing means for finding degrees of adaptation of the given input value to the plurality of membership functions concerning the input variable, to extract a membership function concerning which the found degree of adaptation exceeds a required first reference degree of adaptation; second processing means for finding degrees of adaptation of the given output value to the plurality of membership functions concerning the output variable, to extract a membership function concerning which the found degree of adaptation exceeds a required second reference degree of adaptation; and means for outputting the extracted membership functions concerning the input and output variables.
Claim 3
Dependent Claim
111 words
The rule generating apparatus for fuzzy control according to claim 1, wherein when there are a plurality of kinds of input variables, a plurality of membership functions have been determined in said storing means for each kind of the input variables, an input value is inputted by said inputting means for each kind of the input variables, and said first processing means finds the degrees of adaptation of the input value to the plurality of membership functions for each kind of the input variables, to extract a membership function concerning which the found degree of adaptation exceeds the first reference degree of adaptation set for each kind of the input variables.
Claim 4
Dependent Claim
64 words
The rule generating apparatus for fuzzy control according to claim 1, which further comprises means for performing a fuzzy inference by applying a given input value or an arbitrary input value to rules selected out of rules defined by a combination of the membership functions extracted by said first and second processing means to obtain a corresponding output value and outputting the output value.
Claim 5
Dependent Claim
80 words
A rule verifying apparatus for fuzzy control, comprising: means for storing set rules and membership functions concerning input and output variables and related to the set rules; means for specifying a rule to be excepted; inference means for subjecting a given or arbitrary input value to a fuzzy inference operation using rules excluding the rule specified as one to be excepted, to obtain a corresponding output value; and means for outputting the output value obtained by the fuzzy inference operation.
Claim 6
Dependent Claim
80 words
A rule verifying apparatus for fuzzy control, comprising: means for storing set rules and membership functions concerning input and output variables and related to the set rules; means for specifying a rule to be excepted; inference means for subjecting a given or arbitrary input value to a fuzzy inference operation using rules excluding the rule specified as one to be excepted, to obtain a corresponding output value; and means for outputting the output value obtained by the fuzzy inference operation.
References Cited (Backward Citations)
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