| 摘要 |
<p>PURPOSE:To control the temp. in cooling and rolling of materials with high accuracy by indicating the temp. change in the section of the materials as a rolling temp. model, subjecting the material temp. to preset control to a target value and successively and online estimating various parameter values in accordance with the actually measured value of plant data. CONSTITUTION:The change in the sectional temp. distribution (S point) by rolling and cooling is indicated by the rolling model which can be computed at a high speed if the target temp. (C point) of the material and the lower limit temps. (between S and C) of the material on the outlet side of respective coolers are previously determined in the case of providing plural units of cooling troughs CT1 to CTn on a rolling line and rolling and cooling wire rods, bars, etc. The computation and calculation are made online by using this model and the preset control is so executed that the material temp. attains the target value (C point). In addition, the values of the various parameters such as various heat transfer coeffts. and correction factors for generation of work heat included in the above-mentioned model are successively estimated online in accordance with the actually measured values of the plant data such as material temp., cooling water flow rates and cooling conditions.</p> |
