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Plant operation support system

  • US 5,581,459 A
  • Filed: 09/26/1991
  • Issued: 12/03/1996
  • Est. Priority Date: 09/26/1990
  • Status: Expired due to Fees
First Claim
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1. A plant operation support system in which either of a plurality of operation control variables and operation state evaluation variables of a plant are calculated through a multilayered neural network based on data indicating a plant state, and the calculated results are communicated to an operator of said plant to support plant operation, said support system comprising:

  • means for analyzing an internal causality between neurons in said neural network;

    means for displaying quantitative guidance associated with said neural network and also an analyzed result of the internal causality between the neurons as an association reason;

    data selection means for determining the magnitude of causality between input and output of said neural network and selecting data which has a causality larger than a preset reference; and

    data display means for displaying the selected data,wherein said data selection means selects such a data item that an absolute value of said value resulting by summing a product between the connection intensity in a path reaching an output layer neuron of interest and a differential value of a conversion function used at a passing neuron for all the paths via hidden layer neurons exceeds a predetermined value, as data having the large causality.

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