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A decoupling method for emulsion flow control during silicon steel rolling

A rolling process and flow control technology, applied in rolling mill control devices, metal rolling, metal rolling, etc., can solve problems such as flow control is difficult, achieve the effects of eliminating coupling effects, clear thinking, and strong practicability

Active Publication Date: 2018-08-17
太原钢铁(集团)有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in the rolling process of high-performance silicon steel, the emulsion flows of the six pipelines are coupled with each other, resulting in the problem that the flow is difficult to control. coupling method

Method used

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Embodiment Construction

[0009] During the rolling process of high-performance silicon steel, all six pipelines are in working condition, M1=1, M2=1, M3=1, M4=1, M5=1, M6=1.

[0010] Input a step signal to each pipeline respectively, and test the coupling coefficient K21=0.21, K31=0.11, K41=0.13, K51=0.22, K61=0.31, K12=0.14, K32=0.21, K42=0.14, K52=0.18, K62=0.21, K13=0.32, K23=0.22, K43=0.19, K53=0.31, K63=0.17, K14=0.22, K24=0.19, K34=0.25, K54=0.12, K64= 0.31, K15=0.22, K25=0.18, K35=0.17, K45=0.22, K65=0.19, K16=0.26, K26=0.27, K36=0.16, K46=0.23, K56=0.26.

[0011] Calculate the joint coupling effect coefficient of the second, third, fourth, fifth and sixth pipelines on the flow of the first pipeline: K1=(K21×M2+ K31×M3+ K41×M4+ K51 ×M5+ K61×M6) / (M2+M3+ M4+ M5+M6)=(0.21×1+ 0.11×1+ 0.13×1+ 0.22×1+ 0.31×1) / (1+1+ 1+ 1+ 1) =0.32.

[0012] Similarly, the joint coupling effect coefficient of the first, third, fourth, fifth and sixth pipelines on the flow of the second pipeline is: K2=(K12×M1+ K32×M...

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Abstract

The invention relates to the technical field of emulsion control in the high-performance silicon steel rolling process and provides an emulsion flow rate control decoupling method in the silicon steel rolling process aiming at the problem that in the high-performance silicon steel rolling process, the flow rates are difficult to control due to the fact that the emulsion flow rates of a plurality of pipelines are coupled to one another. According to the emulsion flow rate control decoupling method in the silicon steel rolling process, a step signal is input, the coupling action coefficients of the other pipelines to the flow rate of a certain pipeline are tested correspondingly, then the common coupling action coefficient of the other pipelines to the flow rate of the pipeline is calculated, and then the flow rate control proportional gain of the pipeline is corrected through the common coupling action coefficient of the other pipelines to the flow rate of the pipeline, so that the coupling influences between the pipelines are eliminated.

Description

technical field [0001] The invention relates to the technical field of emulsion control in the rolling process of high-performance silicon steel. Background technique [0002] In the rolling process of high-performance silicon steel, the emulsion plays an important role in lubricating and cooling, and directly determines the rolling performance of the steel plate. Due to the limited space on site, the configuration of the six pipelines is unreasonable, resulting in the mutual coupling of the emulsion flow in the six pipelines, which is difficult to control and seriously affects the rolling performance of high-performance silicon steel. It is imperative to solve the mutual coupling problem of multiple pipelines in the emulsion flow control. At present, the methods to solve the mutual coupling in process control generally adopt the state space model method, dynamic matrix control, etc., but these methods are based on the strict mathematical model of the controlled object. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/00B21B45/02
CPCB21B37/00B21B45/0239
Inventor 李志宏陶家晋黄斌刘文飞杜永谦杨宁
Owner 太原钢铁(集团)有限公司