Expert control system for real time management of automated factory equipment
First Claim
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1. An expert control computer system comprising:
- knowledge base means for defining at least one rule base tree, said rule base tree including a plurality of logically connected variables which can each take on at least the four mutually exclusive values true (T), false (F), untested (U) and indeterminant (I); and
inferencing engine means for evaluating the value of one variable in the rule base tree in response to the value of at least a second variable logically connected thereto; and
value altering means for altering the value of a uniquely selected variable within said rule base tree from any one value of said four values to any other value of said four values,wherein the values of higher-placed ones of the logically connected variables in the at least one rule base tree are at least once inferenced from the values of other lower-placed variable, the system further comprising up-chaining means for automatically up-chaining through the at least one tree when the value of a lower-placed variable is altered and for automatically changing the values of the higher-placed variables whose values have been inferenced from the altered lower-placed variable.
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Abstract
An expert control system for the real time management of an automated factor is disclosed. Variables within rule base trees of the expert control system are preferably restricted to taking on only four values, namely, true (T), false (F), indeterminate (I), and untested (U). Flexibility for responding to real time changes in the automated factory is provided by a command structure which allows the value of any arbitrary variable within a rule base tree to be changed from its current value to any one of the other three values.
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1 Claim
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1. An expert control computer system comprising:
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knowledge base means for defining at least one rule base tree, said rule base tree including a plurality of logically connected variables which can each take on at least the four mutually exclusive values true (T), false (F), untested (U) and indeterminant (I); and inferencing engine means for evaluating the value of one variable in the rule base tree in response to the value of at least a second variable logically connected thereto; and value altering means for altering the value of a uniquely selected variable within said rule base tree from any one value of said four values to any other value of said four values, wherein the values of higher-placed ones of the logically connected variables in the at least one rule base tree are at least once inferenced from the values of other lower-placed variable, the system further comprising up-chaining means for automatically up-chaining through the at least one tree when the value of a lower-placed variable is altered and for automatically changing the values of the higher-placed variables whose values have been inferenced from the altered lower-placed variable.
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Specification
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Current AssigneeDel Partners LP
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Original AssigneeDel Partners LP
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InventorsParadies, David, Leo, Gary M., Tse, Edison
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Primary Examiner(s)MacDonald, Allen R.
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Application NumberUS07/339,535Time in Patent Office1,142 DaysField of Search364/513, 364/468US Class Current706/52CPC Class CodesG06N 5/04 Inference or reasoning modelsY10S 706/904 Manufacturing or machine, e...
