| 摘要 |
PURPOSE:To control the ejection temp. of each material with good accuracy and to reduce fuel consumption by determining the heating-up curve to minimize fuel flow rate with each material in accordance with the fuel flow rate by taking the respective elements of an in-furnace temp., furnace wall temp. and material temp. into consideration. CONSTITUTION:A function 106 to set the furnace temp. is constituted of a function 20 to calculate the present temp., a function 21 to determine the heating-up curve and a function 22 to calculate the set furnace temp. and is periodically started in a continuous heating furnace 101 divided to plural control zones. 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 determined the heating-up curve of each material under the minimization of each fuel. The function 22 compares the target heating-up curve of each material and the present temp., calculates the furnace temp. of each control zone and instructs the set furnace temp. to a fuel flow rate controller 103.
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