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Mathematical model calculation device and control device for rolling line

A mathematical model and computing device technology, which is applied to rolling mill control devices, complex mathematical operations, program control, etc., can solve problems such as the reduction of mathematical model prediction accuracy

Active Publication Date: 2020-06-19
TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the tension is dynamically changed among the racks, the prediction accuracy of the mathematical model decreases.

Method used

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  • Mathematical model calculation device and control device for rolling line
  • Mathematical model calculation device and control device for rolling line
  • Mathematical model calculation device and control device for rolling line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] figure 1 It is a configuration diagram of a hot rolling line to which the mathematical model calculation device of the rolling line in Embodiment 1 is applied.

[0028] Such as figure 1 As shown, the hot rolling production line includes a roughing mill 1 , a finishing mill 2 , a roughing mill exit side strip width gauge 3 , a finishing mill exit side strip width gauge 4 , a looper device 5 and a control device 6 .

[0029] The rough rolling mill 1 is installed on the exit side of a heating furnace not shown. The finish rolling mill 2 is installed on the output side of the rough rolling mill 1 . The finishing mill 2 includes a plurality of stands. Multiple racks are arranged horizontally. For example, the plurality of racks is constituted by a rack 2a, a rack 2b, a rack 2c, a rack 2d, a rack 2e, a rack 2f, and a rack 2g. The strip width gauge 3 on the output side of the rough rolling mill is installed on the output side of the rough rolling mill 1 and the input side...

Embodiment approach 2

[0114] Figure 11 It is a block diagram explaining the control of the rolling line to which the mathematical model calculating device of the rolling line in Embodiment 2 is applied. In addition, the same code|symbol is attached|subjected to the part which is the same as or equivalent to the part of Embodiment 1. As shown in FIG. The description of this part is omitted.

[0115] In Embodiment 2, the control device 6 includes a Smith compensator 11 . The Smith compensator 11 online will change the reference value (command value) for the tension between the racks Negative feedback to the PI controller. In addition, the control device 6 also uploads online the predicted value of the strip width at the exit side of the finishing mill after the time-consuming delay caused by the transmission delay from the strip width meter 4 at the exit side of the finishing mill has passed. Also negative feedback to the PI controller. At this time, if the predicted value of the output side ...

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Abstract

The present invention relates to a mathematical model calculation device for a rolling line and a control device for a rolling line in which the plate width of a rolled material on the output side ofa finishing mill is controlled by controlling the tension of the rolled material using inter-stand loops provided between adjacent stands in the finishing mill provided with a plurality of stands. Themathematical model calculation device is provided with a mathematical model calculation unit that, with respect to the rolling line, inputs a response value of the tension of the rolled material between adjacent stands on the basis of a history of the response value of the rolling line. A mathematical model is calculated with the response value of the plate width of the rolled material on the output side of the finishing mill as an output.

Description

technical field [0001] The invention relates to a mathematical model calculation device and a control device of a rolling production line. Background technique [0002] Patent Document 1 discloses a control device for a rolling line. This control device controls the strip width of the rolled material on the output side of the finish rolling mill based on a mathematical model obtained by linear recursive calculation. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2003-211211 [0006] However, in the control device described in Patent Document 1, the mathematical model is obtained from a steady state. Therefore, when the tension is dynamically changed among the racks, the prediction accuracy of the mathematical model decreases. Contents of the invention [0007] The present invention is made to solve the above-mentioned problems. An object of the present invention is to provide a mathematical model calc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00B21B37/22G06F17/11
CPCB21B37/00B21B37/22G06F17/11Y02P90/02G05B19/41885B21B37/48G06F17/10G05B23/024G05B23/0254
Inventor 铃木敦
Owner TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
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