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Controller for plant

  • US 8,965,664 B2
  • Filed: 03/27/2009
  • Issued: 02/24/2015
  • Est. Priority Date: 03/27/2009
  • Status: Active Grant
First Claim
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1. A control device for a plant, comprising:

  • a first estimated value calculating means for calculating an estimated value of a first physical quantity, which is at least one of a plurality of physical quantities indicating a state of the plant, by way of a predetermined algorithm based on a plurality of inputs;

    a second estimated value calculating means for calculating an estimated value of a second physical quantity, which correlates with the first physical quantity, by way of a predetermined algorithm based on a plurality of inputs;

    a detection means for detecting the second physical quantity; and

    an adaptive input calculating means for calculating an adaptive input to be mutually inputted to the first estimated value calculating means and the second estimated value calculating means, so that deviation between a detected value of the second physical quantity detected by way of the detection means and the estimated value of the second physical quantity calculated by way of the second estimated value calculating means becomes a minimum,wherein a predetermined control variable of the plant is controlled based on the estimated value of the first physical quantity.

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