| 摘要 |
PURPOSE:To control the ejection temp. of the materials existing in a furnace with good accuracy by executing linearization to optimize the minimization of fuel flow rate by perturbation method simulation which changes stepwise the fuel flow rate by using three non-linear models including the model to determine a furnace wall temp. distribution. CONSTITUTION:A burner 105 for combustion and a furnace temp. detector 104 are disposed in a heating furnace 101 divided to plural control zone and the flow rate is controlled by a fuel flow rate controller 103 so that the set temp. for each of the control zones set by a function 106 to determine the furnace temp. is attained. A material information function 102 instructs the material information including the size, weight, ejection temp., etc., of the materials in the furface to the function 106. The function 106 consists of a function 20 to calculate the present temp., a function 21 to calculate the optimum furnace temp. of each material and a function 22 to calculate the set furnace temp. and is finally started. The function 20 calculates the present material temp. by a model 5 for calculating the furnace temp., a model 6 for calculating the furnace wall temp. and a model 7 for calculating the material temp. in accordance with the material information. The function 21 determine the optimum furnace temp. of each material under the minimization of each fuel.
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