CN102581027B - Control system for transverse integrative optimization of shape of cold rolled steel strip - Google Patents

Abstract

The invention discloses a control system for transverse integrative optimization of the shape of a cold rolled steel strip, which comprises a contact-type shape gauge mounted at an outlet of a rolling mill to measure and obtain output shape parameters of the rolling mill; a calculating and controlling module is connected with the contact-type shape gauge to receive the output shape parameters of the rolling mill obtained by the contact-type shape gauge and calculate an optimal regulating variable of a regulating mechanism according to the output shape parameters and target shape parameters; and the regulating mechanism is connected with the calculating and controlling module to adjust the rolling mill according to the optimal regulating variable calculated by a calculating and controlling module. The control system for transverse integrative optimization of the shape of the cold rolled steel strip effectively solves the technical problems of large deviation of partial shape and high defective rate caused by use of the traditional shape control method, and the shape control quality of the cold rolled steel strip can be enhanced remarkably.

Description

Control system for transverse integrative optimization of shape of cold rolled steel strip

Technical field

The present invention relates to cold-strip steel field, especially a kind of control system for transverse integrative optimization of shape of cold rolled steel strip.

Background technology

Along with the manufacturing fast development of domestic and international belt steel product, downstream user requires also day by day to increase to the strip shape quality of cold-rolled steel strip products, particularly for industries such as high-grade automobile and high-end IT product manufactures.So the quality of cold-rolled strip steel shape has become one of the key technical indexes of examination belt steel product.

In Cold Rolling process, can there is significantly extending longitudinally and lateral flow in band steel.When band steel lateral flow is larger, can cause with horizontal each unit extending longitudinally inconsistent of steel, between adjacent strip unit, produce and extend poorly, make the generation stretching of adjacent strip unit or compression and cause flatness defect.

For quantitative measurement plate shape, the method conventionally adopting is in the world, gets with steel transversely between difference 10 of length difference ⁵doubly carry out display plate shape, i.e. δ _i=Δ L _i/ L * 10 ⁵, unit definition is I.Wherein, δ _ithe plate shape of i measuring section, Δ L _ibe the actual plate shape of i measuring section and the length difference between on-gauge plate shape, L is on-gauge plate shape.

When carrying out plate shape control accuracy statistics, conventional method is to calculate the mean value of each first plate shape absolute value,

here

for the mean value of plate shape absolute value, n is the number with the effective contact plate profile instrument measuring section covering of steel.

In fact, the evaluation to cold-rolled steel strip products strip shape quality, key is the maximum δ of plate shape absolute value of the bias in each unit _maxwhether transfinite, δ _max=max (| δ _i|).And utilize above-mentioned plate shape statistical method, when board form data meets production board shape and requires in statistics (for example

), the plate shape that can not guarantee all units all meets production board shape and requires (now to refer to δ _i< 10I all sets up).

In existing cold rolled strip steel production process, technical staff adopts the method for multivariable optimizing control models conventionally, carry out the calculating of each plate shape regulating and controlling mechanism on-line control amount, this control method is: through the adjusting of governor motion, allow the quadratic sum of actual plate shape and target flatness deviation be minimum of a value, to the plate shape deviation of each unit, be that equalization is treated herein, and plate shape deviation larger part is not effectively processed, therefore produced in the plate shape of milling train outlet local plate shape deviation excessive, the problem that product defect rate is high.

Summary of the invention

The technical problem to be solved in the present invention is to provide that a kind of can to solve local plate shape deviation excessive, improves the control system for transverse integrative optimization of shape of cold rolled steel strip of product percent of pass.

In order to solve the problems of the technologies described above, the invention provides a kind of control system for transverse integrative optimization of shape of cold rolled steel strip, comprising:

Contact plate profile instrument, is installed on milling train exit, for measuring the output board shape parameter that obtains milling train;

Calculation control module, is connected with described contact plate profile instrument, the output board shape parameter recording for receiving described contact plate profile instrument, and according to the optimal adjustment amount of this output board shape parameter and target flatness calculation of parameter ejecting plate shape regulating and controlling mechanism;

Plate shape regulating and controlling mechanism, is connected with described calculation control module, for the optimal adjustment amount calculating according to calculation control module, milling train is adjusted.

Further, also comprise:

Stable rolling judge module, is connected with described calculation control module, and for judging whether the practical rolling speed of milling train is greater than default stable rolling critical speed, if so, output is carried out instruction to described calculation control module;

Described calculation control module receives after the execution instruction of described stable rolling judge module output, then carries out calculating operation, otherwise does not carry out calculating operation.

Further, also comprise:

Communication module, for realizing communicating by letter between control system of the present invention and milling train controlled stage computer;

Production information collection module, is connected with described communication module and calculation control module, for obtaining production information from described milling train controlled stage computer, and this production information is sent to described calculation control module.

Further, also comprise:

Control parameter setting module, be connected with described calculation control module, for input control parameter, and control parameter is sent to described calculation control module.

Control system for transverse integrative optimization of shape of cold rolled steel strip provided by the invention efficiently solves while using traditional board-shape control method and often runs into the technical problem that local plate shape deviation is excessive, product defect rate is high, and the plate shape that can significantly improve cold-strip steel is controlled quality.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of an embodiment of control system for transverse integrative optimization of shape of cold rolled steel strip of the present invention.

Fig. 2 is the board-shape control method flow chart of one embodiment of the invention.

Fig. 3 is in the embodiment of the present invention, provide three groups and controls weight coefficients with plate shape absolute value of the bias variation diagram.

Fig. 4 is that in the embodiment of the present invention, a certain control cycle is controlled header board shape deviation profile figure.

Fig. 5 for the control that adopts traditional plat control system and obtain after plate shape deviation profile figure.

Fig. 6 for the control that adopts plat control system of the present invention and obtain after plate shape deviation profile figure.

Fig. 7 is the effect comparison diagram of traditional plat control system and plat control system of the present invention.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the invention will be further described, can be implemented, but illustrated embodiment is not as a limitation of the invention so that those skilled in the art can better understand the present invention also.

As shown in Figure 1, in one embodiment of the invention, control system for transverse integrative optimization of shape of cold rolled steel strip comprises:

Communication module, is preferably EPA communication module, for completing the operation of rolling data network communications function between plate shape control system for transverse integrative optimization of shape and milling train process control level (L2 level) computer;

Production information collection module, is connected with described Network Communication module and calculation control module, for receiving milling train and the roll coil of strip production information from milling train process control level (L2 level) computer, and this production information is sent to calculation control module.Milling train and roll coil of strip production information comprise: the contact plate profile instrument measuring section number n that the plate shape regulating and controlling mechanism number N that milling train is equipped with, roll effectively cover with steel with width B (mm of unit), current milling train practical rolling speed V (m/s of unit or m/min), the roll of steel;

Control parameter setting module, be connected with calculation control module, for input control parameter, and control parameter is sent to described calculation control module.Control parameter and comprise that the plate shape of setting plate shape control system for transverse integrative optimization of shape is controlled weight coefficient and sets up plate shape transverse integral optimal control object function;

Stable rolling judge module, is connected with calculation control module, for receiving current milling train practical rolling speed V, judges whether V is greater than by the predetermined stable rolling critical speed of steel rolling process engineer V ₀.If there is V > V ₀, export judging result signal S=1; Otherwise, output judging result signal S=0;

Manual operation module, for receiving the judging result signal S of stable rolling judge module, if have S=0 now plate shape automatic control system can not drop into on-line operation, and rely on operator's artificial observation milling train outlet flatness defect, manually determine each plate shape regulating and controlling mechanism regulated quantity u _i(i=1,2 ..., N);

Flatness object curve setting module, for receive roll with the width B of steel and roll with the effective contact plate profile instrument measuring section number n of covering of steel, consider that signal compensation and subsequent treatment operation plate shape demand set out this n the corresponding plate shape of plate shape measurement section echo signal ref simultaneously _i(i=1,2 ..., n), and be stored in plate shape Computer Database;

Calculation control module, for receiving the judging result signal S of stable rolling judge module, described n the corresponding plate shape of plate shape measurement section echo signal ref _i(i=1,2 ..., n) with by n the corresponding plate shape measurement signal of plate shape measurement section σ of the online actual measurement of contact plate profile instrument _i(i=1,2 ..., n), if having S=1 now plate shape automatic control system drop into on-line operation, first calculate the plate shape deviation signal δ of this control cycle _i(i=1,2 ..., n), then utilize the plate shape optimal adjustment amount computing formula in this module to online calculate each plate shape regulating and controlling mechanism optimal adjustment amount u in this control cycle _i(i=1,2 ..., N), for changing working roll roll gap distribution, to guarantee milling train outlet strip shape quality, reduce the defect rate of cold-rolled steel strip products;

Contact plate profile instrument, is arranged on milling train exit and for cold-strip steel exit plate shape measuring-signal σ _i(i=1,2 ..., n), after each measurement, by TCP/IP network communication, measured value is sent to described calculation control module.

In control parameter setting module in technique scheme, it should be the increasing function about plate shape absolute value of the bias that plate shape is controlled weight coefficient.Especially, can select the plate shape of following form to control weight coefficient here:

$\begin{array}{cc}f\left({\mathrm{\&delta;}}_i\right)=e^{\frac{1}{a}\left|{\mathrm{\&delta;}}_i\right|},& i=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,n\end{array}$

In formula, δ _irepresent i the corresponding plate shape of plate shape measurement section deviate, unit is plate shape international unit I; E represents exponential function; A is the key parameter for adjustment function slope size, and it is required to be the arithmetic number that is greater than zero; | δ _i| represent δ _iabsolute value.

In control parameter setting module in above-described embodiment, described plate shape transverse integral optimal control object function is:

$J=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}(f\left({\mathrm{\&delta;}}_i\right)\&times;{({\mathrm{\&delta;}}_i-\underset{j=1}{\overset{N}{\mathrm{\&Sigma;}}}{E}_{\mathrm{ij}}\&times;u_j)}^2),$

In formula, E _ijrepresent that the unit act amount of j plate shape regulating and controlling mechanism is at the plate shape regulation and control coefficient of i plate shape measurement section, unit is the unit act amount of I/ plate shape regulating and controlling mechanism; u _jthe actuating quantity that represents j plate shape regulating and controlling mechanism, f (δ _i) be that i the corresponding plate shape of plate shape measurement section controlled weight coefficient.

In calculation control module in above-described embodiment, described plate shape deviation signal δ _i(i=1,2 ..., computational methods n) are: δ _i=ref _i-σ _i.

In calculation control module in above-described embodiment, described plate shape optimal adjustment amount computing formula is:

In formula, δ _irepresent i the corresponding plate shape of plate shape measurement section deviate, unit is plate shape international unit I; E _ijrepresent that the unit act amount of j plate shape regulating and controlling mechanism is at the plate shape regulation and control coefficient of i plate shape measurement section, unit is the unit act amount of I/ plate shape regulating and controlling mechanism; u _jthe actuating quantity that represents j plate shape regulating and controlling mechanism; F (δ _i) be that i the corresponding plate shape of plate shape measurement section controlled weight coefficient.

The present invention increases larger plate shape deviation by lead-in plate shape control weight coefficient and is in the weight in Controlling object function, layout board shape transverse integral Controlling object function, can automatically calculate each plate shape regulating and controlling mechanism optimal adjustment amount that can effectively reduce milling train exit plate shape maximum deviation amount, for the on-line control of cold-rolled strip steel shape, improved the uniformity of plate shape deviation profile;

The present invention's its on-line control amount calculating section when significantly improving plate shape to control quality does not increase extra calculating link, and whole plat control system is realized simply, reaction speed is fast, meets the requirement of real-time that cold-rolled strip steel shape is controlled automatically completely.

Based on control method for transverse integrative optimization of shape of cold rolled of the present invention, can be used for four rollers, six roller single chassis or multi-frame tandem mills.The single chassis six-high cluster mill of take is below example, and the product that six-high cluster mill can rolling comprises common plate, high-strength steel, part stainless steel and silicon steel etc.The present embodiment rolling be middle high grade silicon steel, type is UCM milling train, plate shape control device comprises that roller declination, the positive and negative roller of working roll, the positive roller of intermediate calender rolls, intermediate roll shifting and emulsion section are cooling etc.Wherein intermediate roll shifting is to preset according to strip width, and adjusting principle is that intermediate calender rolls body of roll edge is alignd with steel edge portion, also can be considered to add a correction by operation side, is transferred to a rear holding position constant; Emulsion section is cooling has larger characteristic time lag.Thereby the plate shape control device of on-line control mainly contains three kinds of roller declinations, the positive and negative roller of working roll, the positive roller of intermediate calender rolls.Basic mechanical design feature index and the device parameter of this unit are:

Mill speed: Max 900m/min, draught pressure: Max 18000KN, maximum rolling force square: 140.3KN * m, coiling tension: Max 220KN, main motor current: 5500KW;

Supplied materials thickness range: 1.8～2.5mm, supplied materials width range: 850～1280mm, outgoing gauge scope: 0.3mm～1.0mm;

Work roll diameter: 290～340mm, working roll height: 1400mm, intermediate calender rolls diameter: 440～500mm, intermediate calender rolls height: 1640mm, backing roll diameter: 1150～1250mm, backing roll height: 1400mm;

Every side work roll bending power :-280～350KN, every side intermediate calender rolls bending roller force: 0～500KN, the axial traversing amount of intermediate calender rolls :-120～120mm, auxiliary hydraulic system pressure: 14MPa, balance bending system pressure: 28MPa, press down system pressure: 28MPa.

Plate Profile Measuring System (being generally contact plate profile instrument) adopts ABB AB's plate shape roller of Sweden, this plate shape roller roller footpath 313mm, by single solid steel axle, formed, broad ways is divided into a measured zone every 52mm, in each measured zone, the surrounding at measuring roller is uniform-distribution with four grooves to place magnetoelasticity power sensor vertically, and the outside of sensor is wrapped up by steel loop.Product specification in this example (thickness * width) is: 0.80mm * 1250mm.

As shown in Figure 2, the specific works flow process of utilizing the present embodiment to carry out the optimal control of cold-rolled strip steel shape transverse integral is:

1) collecting milling train and band steel production information in milling train and this example of band steel production information comprises: three kinds of the total roller declinations of online plate shape regulating and controlling mechanism, the positive and negative roller of working roll, the positive roller of intermediate calender rolls, therefore have N=3; Roll is with the width B=1250mm of steel; Current milling train practical rolling speed V=900m/min; In this example, strip width is 1250mm, each measuring section width dimensions of plate profile instrument measuring roller is 52mm, therefore be with steel altogether to cover 1250/52=24.0385 measuring section, due to two measuring section coverage rates of milling train fore side and transmission side outermost end very little (not as good as measuring section width 52mm 2%), therefore can cast out milling train fore side and two measuring sections of transmission side outermost end, that is to say the contact plate profile instrument measuring section number n=24 that roll effectively covers with steel.

2) selected plate shape is controlled weight coefficient Fig. 3 and has been provided exponential type function

the control weight coefficient obtaining when key parameter a gets different value is with plate shape absolute value of the bias variation diagram.In this example, select above-mentioned exponential type function to determine that plate shape is controlled weighting function, here key parameter a=12, therefore plate shape control weight coefficient is the increasing function of plate shape absolute value of the bias, therefore can increase larger plate shape deviation is in the weight in Controlling object function, effectively eliminates the generation of the excessive phenomenon of local plate shape deviation in cold rolled strip steel production process.The control weight coefficient that this exponential function represents is expressed as:

$\begin{array}{cc}f\left({\mathrm{\&delta;}}_i\right)={\mathrm{<figure-callout\; id="1"\; label="e"\; filenames="1201181440151.png,1201181440153.png"\; state="\{\{state\}\}">e</figure-callout>}}^{\frac{1}{12}\left|{\mathrm{\&delta;}}_i\right|},& i=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,24\end{array}---\left(1\right)$

In formula, δ _ithe plate shape deviate that represents i plate shape measurement section correspondence, unit is plate shape international unit I; E represents exponential function; | δ _i| represent δ _iabsolute value.

3) be a kind of plate shape of this instance constructs transverse integral optimal control object function

$J=\underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}(f\left({\mathrm{\&delta;}}_i\right)\&times;{({\mathrm{\&delta;}}_i-\underset{j=1}{\overset{3}{\mathrm{\&Sigma;}}}{E}_{\mathrm{ij}}\&times;u_j)}^2)---\left(2\right)$

In formula, E _i1represent that the unit act amount of roller declination mechanism is at the plate shape regulation and control coefficient of i plate shape measurement section, unit is I/mm, E _i2represent that the unit act amount of the positive and negative bend roller mechanism of battery of working roll is at the plate shape regulation and control coefficient of i plate shape measurement section, unit is I/KN, E _i3represent that the unit act amount of the positive bend roller mechanism of battery of intermediate calender rolls is at the plate shape regulation and control coefficient of i plate shape measurement section, unit is I/KN; u ₁the actuating quantity that represents roller declination mechanism, u ₂the actuating quantity that represents the positive and negative bend roller mechanism of battery of working roll, u ₃the actuating quantity that represents the positive bend roller mechanism of battery of intermediate calender rolls.

4) determine when object function is got minimum of a value that plate shape optimal adjustment amount computing formula is in order to eliminate as far as possible uniformly the plate shape deviation of this example, here need to ask for the plate shape regulating and controlling mechanism regulated quantity while making object function J obtain minimum of a value, the partial derivative that namely makes J get each plate shape regulating and controlling mechanism regulated quantity is equal to zero:

$\begin{array}{cc}\frac{\&PartialD;J}{{\&PartialD;u}_j}=0,& j=\mathrm{1,2,3}\end{array}.$

By mathematical derivation, the plate shape optimal adjustment amount computing formula that can obtain this example is:

$\left[\begin{array}{c}{u}_1\\ u_2\\ {\mathrm{<figure-callout\; id="3"\; label="u"\; filenames="1201181440155.png,1201181440156.png"\; state="\{\{state\}\}">u</figure-callout>}}_3\end{array}\right]={\left[\begin{array}{ccc}\underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i1}{\mathrm{<figure-callout\; id="1"\; label="E\; i"\; filenames="1201181440151.png,1201181440153.png"\; state="\{\{state\}\}">E</figure-callout>}}_i& \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i2}{\mathrm{<figure-callout\; id="1"\; label="E\; i"\; filenames="1201181440151.png,1201181440153.png"\; state="\{\{state\}\}">E</figure-callout>}}_i& \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i3}{\mathrm{<figure-callout\; id="1"\; label="E\; i"\; filenames="1201181440151.png,1201181440153.png"\; state="\{\{state\}\}">E</figure-callout>}}_i\\ \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i1}{\mathrm{<figure-callout\; id="2"\; label="E\; i"\; filenames="1201181440153.png,1201181440155.png"\; state="\{\{state\}\}">E</figure-callout>}}_i& \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i2}{\mathrm{<figure-callout\; id="2"\; label="E\; i"\; filenames="1201181440153.png,1201181440155.png"\; state="\{\{state\}\}">E</figure-callout>}}_i& \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i3}{\mathrm{<figure-callout\; id="2"\; label="E\; i"\; filenames="1201181440153.png,1201181440155.png"\; state="\{\{state\}\}">E</figure-callout>}}_i\\ \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i1}{\mathrm{<figure-callout\; id="3"\; label="E\; i"\; filenames="1201181440155.png,1201181440156.png"\; state="\{\{state\}\}">E</figure-callout>}}_i& \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i2}{\mathrm{<figure-callout\; id="3"\; label="E\; i"\; filenames="1201181440155.png,1201181440156.png"\; state="\{\{state\}\}">E</figure-callout>}}_i& \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right)E_{i3}{E}_{i3}\end{array}\right]}^{-1}\&times;\left[\begin{array}{c}\underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right){\mathrm{\&delta;}}_i{E}_{i1}\\ \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right){\mathrm{\&delta;}}_i{E}_{i2}\\ \underset{i=1}{\overset{24}{\mathrm{\&Sigma;}}}f\left({\mathrm{\&delta;}}_i\right){\mathrm{\&delta;}}_i{E}_{i3}\end{array}\right]---\left(3\right)$

5) judge whether plate shape automatic control system possesses the stable rolling critical speed V0=300m/min being determined by steel rolling process engineer in this example of condition of reaching the standard grade, can find out in step 1) in the milling train practical rolling speed V that collects be greater than V0, now go to the 6th) step, can input board shape automatic control system can not drop into on-line operation.

6) Shape signal that reception plate profile instrument periodically sends is after this example plate shape automatic control system on-line running, plate profile instrument all can send by TCP/IP network communication the Shape signal of 24 different plate shape measurement sections at regular intervals to plate shape automatic control system, plate shape automatic control system receives after this Shape signal its assignment to the plate shape measurement signal variable σ in control program _i(i=1,2 ..., 24) and ，Qi unit is I.

7) in plate shape automatic control system slave plate shape Computer Database, read the predefined plate shape echo signal ref by steel rolling process engineer _i(i=1,2 ..., 24) and ，Qi unit is I; Recycling plate shape echo signal deducts the plate shape deviation signal δ that plate shape measurement signal obtains this control cycle _i(i=1,2 ..., 24), computing formula is: δ _i=ref _i-σ _i.Fig. 3 is a kind of typical plate shape deviation profile figure in the present embodiment.

8) utilize plate shape optimal adjustment amount computing formula (3) to calculate in real time the optimal adjustment amount u of the three kinds of plate shape regulating and controlling mechanisms of the positive roller of the positive and negative roller of roller declination, working roll, intermediate calender rolls in this control cycle _i(i=1,2,3).

9) the optimal adjustment amount u of output roller declination, the positive and negative roller of working roll, three kinds of plate shape regulating and controlling mechanisms of the positive roller of intermediate calender rolls _i(i=1,2,3), for changing working roll roll gap distribution, to guarantee milling train outlet strip shape quality, reduce cold-rolled steel strip products defect rate.

In the present embodiment, belt steel product strip shape quality requires to be no more than 6I for each measuring section plate shape deviation.Fig. 4 is that in this example, a certain control cycle is controlled header board shape deviation profile figure, can find out that now maximum plate shape deviation is δ _max=22.5I, absolute value average plate shape deviation is

fig. 5 is for adopting the plate shape deviation profile figure after traditional plat control system is controlled, and now maximum plate shape deviation is δ _max=7I, absolute value average plate shape deviation is

although now the mean value of plate shape absolute value of the bias is all less than 6I, the 24th plate shape measurement section plate shape deviation, surpassed 6I, actual plate shape has exceeded product quality requirement.Fig. 6 is for adopting the plate shape deviation profile figure after rolling belt plate shape control system for transverse integrative optimization of shape and controlling of the present invention, and now maximum plate shape deviation is δ _max=5.2I, absolute value average plate shape deviation is

the maximum plate shape deviation and the absolute value average plate shape deviation that now obtain are all less than 6I, and actual plate shape meets product quality requirement completely.Fig. 7 has provided traditional plat control system and the present invention rolls the effect comparison diagram of belt plate shape control system for transverse integrative optimization of shape on single chassis six roller reversable cold-rolling machines, can find out that the present invention has effectively reduced milling train exit plate shape maximum deviation amount, solve while using traditional plat control system and often run into the technical problem that local plate shape deviation is excessive, product defect rate is high, the plate shape that can significantly improve cold-strip steel is controlled quality.

The above embodiment is only the preferred embodiment for absolutely proving that the present invention lifts, and protection scope of the present invention is not limited to this.Being equal to that those skilled in the art do on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.

Claims (3)

1. a control system for transverse integrative optimization of shape of cold rolled steel strip, is characterized in that, comprising:

Contact plate profile instrument, is installed on milling train exit, for measuring the output board shape parameter that obtains milling train;

Calculation control module, is connected with described contact plate profile instrument, the output board shape parameter recording for receiving described contact plate profile instrument, and according to the optimal adjustment amount of this output board shape parameter and target flatness calculation of parameter ejecting plate shape regulating and controlling mechanism;

Plate shape regulating and controlling mechanism, is connected with described calculation control module, for the optimal adjustment amount calculating according to calculation control module, milling train is adjusted;

Stable rolling judge module, is connected with described calculation control module, and for judging whether the practical rolling speed of milling train is greater than default stable rolling critical speed, if so, output is carried out instruction to described calculation control module;

Described calculation control module receives after the execution instruction of described stable rolling judge module output, then carries out calculating operation, otherwise does not carry out calculating operation.

2. control system for transverse integrative optimization of shape of cold rolled steel strip according to claim 1, is characterized in that, also comprises:

Communication module, for realizing communicating by letter between control system and milling train controlled stage computer;

Production information collection module, is connected with described communication module and calculation control module, for obtaining production information from described milling train controlled stage computer, and this production information is sent to described calculation control module.

3. control system for transverse integrative optimization of shape of cold rolled steel strip according to claim 1, is characterized in that, also comprises:

Control parameter setting module, be connected with described calculation control module, for input control parameter, and control parameter is sent to described calculation control module.

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