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Method of system state analysis

DC
  • US 4,937,763 A
  • Filed: 09/06/1988
  • Issued: 06/26/1990
  • Est. Priority Date: 09/06/1988
  • Status: Expired due to Term
First Claim
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1. In a multi-variable process, a method for controlling the process within predetermined process parameters, comprising the steps of:

  • a. capturing and recording a range of valid examples of a plurality of process variables when the process is running in an acceptable condition, and determining the pattern overlap of all pairs of such examples;

    b. periodically acquiring current observations of the process variables and determining the pattern overlap of each such current observation of each of the examples of step a;

    c. obtaining an operator from the pattern overlap of step a and applying it to the pattern overlap of step b to produce an adaptive linear combination of said examples;

    d. comparing the current observations to the linear combination of step c to determine the validity of the current observation; and

    e. indicating the results of step d to enable a determination to be made whether the current observation indicates the process to be operating within the range of valid examples of step a.

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