RULE-CHANGEABLE FUZZY CONTROLLER AND ITS OPERATING METHOD

PURPOSE:To alter a rule only on condition the a control output does not change suddenly by providing a rule alteration inhibition control circuit. CONSTITUTION:Each inference part 11 sets or changes three membership functions of an antecedent part by setting the codes of the membership functions in...

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Bibliographic Details
Main Author NISHIDAI HAJIME
Format Patent
LanguageEnglish
Published 25.04.1991
Subjects
CALCULATING
COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS
COMPUTING
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
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Summary:PURPOSE:To alter a rule only on condition the a control output does not change suddenly by providing a rule alteration inhibition control circuit. CONSTITUTION:Each inference part 11 sets or changes three membership functions of an antecedent part by setting the codes of the membership functions in digital switches 25a-25c. The rule alteration inhibition control 50 supplies a new rule which is set in the digital switches 25a-25c during the execution of fuzzy reasoning to membership function circuits (MFC) 20a-20c on condition that the control output does not vary suddenly, and inhibits the MFCs 20a-20c from altering the rule when the control output varies suddenly. Consequently, rule alteration which possibly causes the control output to vary suddenly is limited, so no adverse influence upon a controlled system is exerted.
Bibliography:Application Number: JP19890236960