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Method and apparatus for controlling or processing operations of varying characteristics

  • US 5,057,992 A
  • Filed: 04/12/1989
  • Issued: 10/15/1991
  • Est. Priority Date: 04/12/1989
  • Status: Expired due to Term
First Claim
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1. A method of controlling a physical process to compensate for uncertain perturbations in the process, said method comprisingmeasuring values, K, representing a controlling input to a physical process to be regulated over a time t;

  • measuring a corresponding set of process output values, W, representing the combined effect of said input values, K, and uncertain and uncompensated perturbations occurring in the process;

    relating said process output values, W, to said input values, K, by a multiplicative processing operation characterized by the relation;

    
    
    space="preserve" listing-type="equation">S=t.sup.LK/W.spsp.a wherein;

    S=synthesized state-variable;

    t=elapsed time;

    a=process parameter; and

    L=coupling parameter;

    estimating said perturbations Dp occurring in the process by constraining the multiplicative processing operation by adjoining a deviation relation thereto, andcompensating for disturbing effects of said perturbations, Dp, upon the physical process by adjusting the input value, K, in accordance with the values S, a, and L.

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