CN102366764B - Processing method for reducing order of measured value of cold-rolled steel strip shape measuring signal - Google Patents

Abstract

The invention relates to a processing method for reducing the order of the measured value of a cold-rolled steel strip shape measuring signal. The processing method comprises the following specific steps of: determining the quantity and position coordinates of strip shape characteristic points along the width direction of a steel strip according to the product specifications of a cold-rolled steel strip and the requirement of a subsequence strip shape control algorithm on a strip shape signal; and accurately determining a position coordinate of a central point in an effective measuring region of a strip shape instrument by considering unfavorable factors such as frequent inconsistence of the width of the steel strip with that of a measuring roller of the strip shape instrument, deviation of the steel strip in the cold rolling process, deviation of the central position of the measuring roller and the like in the cold-rolled strip steel production process, automatically matching the position relation between the central point of the effective measuring region of the strip shape instrument and the strip shape characteristic points, and computing a high-accuracy strip shape value at each strip shape characteristic point by interpolating to provide necessary preconditions for high-accuracy strip shape closed loop control. The method has an online automatic order reducing function; and according to the method, the unfavorable factors can be eliminated effectively, and foundations are laid for enhancing the cold-rolled steel strip shape control quality.

Description

The depression of order processing method of cold-rolled strip steel shape measuring-signal measured value

Technical field

The present invention relates to the cold-strip steel field, relate in particular to a kind of depression of order processing method of cold-rolled strip steel shape measuring-signal measured value.

Background technology

In the technical quality examination of cold-rolled steel strip products, strip shape quality is one of most important technical indicator.Traditional cold-rolled strip steel shape is controlled and mainly with plate shape, is presetted and be controlled to be the master, realizes advanced plate shape line closed loop control, becomes the bottleneck that restriction product strip shape quality improves.In order to improve the strip shape quality of cold-strip steel, increasing cold rolled strip steel production enterprise starts to increase Plate Profile Measuring System and detects online band steel exports plate shape, send the deviation between target flatness and measuring plate shape to plat control system again, the online regulated quantity of each plate shape regulating and controlling mechanism of calculating in real time is to reach the purpose of improving strip shape quality.

Whether the Plate Profile Measuring System form is varied, by it, contact with the strip and can be divided into contact and contactless two kinds.The contact plate profile instrument is compared and is had the advantages such as certainty of measurement is high, measuring-signal is reliable, antijamming capability is strong with contactless plate profile instrument; owing in cold rolling production, requiring Plate Profile Measuring System to have higher certainty of measurement and reliability, so each cold rolled strip steel production enterprise can select the contact plate profile instrument as Plate Profile Measuring System usually.

Contact plate profile instrument model is in case selected, and its physical size is constant.On the other hand, the cold rolling enterprise product specification of producing is to be subjected to the impact of market order and often to change.The product specification that constantly changes, making strip width and plate shape measurement roller effectively measure the width size often can not be consistent.Worse, deviation phenomenon can occur in cold-strip steel in the operation of rolling, and also there is skew in plate shape measurement roller center line with respect to the milling train center line.In this case, even same gauge strip steel, due to the generation of strip running deviation and the skew of measuring roller center, its covering situation on the plate shape measurement roller also can change.With steel, in the covering situation on the plate shape measurement roller, finally can have influence on distribution and the size on plate profile instrument effective measuring area broad ways.

The end user of plate shape measurement value is plat control system, so it need to meet the requirement of plat control system to plate shape measurement.Cold-strip steel for a certain specification, plat control system can be got one group of particular point along the strip width direction, and (number of normal conditions lower plate shape characteristic point is less than the number of plate profile instrument effective measuring area as plate shape characteristic point, therefore can be referred to as the depression of order of plate shape measurement signal is processed), with the plate shape of limited plate shape characteristic point, be worth to represent the plate shape value with on the steel broad ways.When plat control system put into operation, the plate shape value that it needs to obtain in real time these plate shape characteristic points was carried out the regulated quantity at each plate shape regulating and controlling mechanism of line computation.But, in actual band steel production process, can have that strip width and plate profile instrument measuring roller width not of uniform sizely cause, a unfavorable factor such as strip running deviation and the skew of measuring roller center in cold-rolled process; In addition, existing Shape signal depression of order processing method does not have well to mate the position relationship between plate profile instrument effective measuring area central point and plate shape characteristic point.Therefore, if do not consider these unfavorable factors, directly the plate profile instrument measuring-signal is carried out after traditional depression of order is processed sending plat control system to, between resulting plate shape value by plate shape Based on Feature Points and band steel actual plate shape value, can there is relatively large deviation, seriously run counter to the basic principle that plat control system has degree of precision to require to the plate shape measurement value.

The cold rolled sheet shape control technology is caused import cold rolled sheet shape control system expensive by offshore company monopolizes always, even owing to not grasping core technology, after product becomes specification, can not guarantee that system well moves after the high price import, the production domesticization research and development of therefore carrying out cold rolled sheet shape control core technology are imperative.

Based on the above fact, research and development have the depression of order processing method of the cold-rolled strip steel shape measuring-signal measured value of on-line automatic computing function, overcome that strip width and plate profile instrument measuring roller width not of uniform sizely cause, the unfavorable factor such as strip running deviation and the skew of measuring roller center in cold-rolled process, for plat control system provides high-precision plate shape measurement signal, adapt to the specification requirement of cold rolled sheet shape control system, the final cold-rolled strip steel shape quality that improves is very important.

Summary of the invention

technical problem to be solved by this invention is: the depression of order processing method that a kind of cold-rolled strip steel shape measuring-signal measured value is provided, this processing method has been considered the strip width that can often run in the cold rolled strip steel production and not of uniform size the causing of plate profile instrument measuring roller width, the unfavorable factor such as strip running deviation and the skew of measuring roller center in cold-rolled process, accurately determined the position coordinates of plate profile instrument effective measuring area central point, can Auto-matching good plate profile instrument effective measuring area central point and plate shape characteristic point between position relationship, final interpolation calculation goes out the plate shape value at high-precision each plate shape characteristic point place.For realizing that the closed-loop control of high-precision plate shape provides essential precondition.

The present invention solves its technical problem and adopts following technical scheme:

The depression of order processing method of cold-rolled strip steel shape measuring-signal measured value provided by the invention, specifically: according to product specification and the successive plates shape control algolithm of cold-strip steel, the requirement of Shape signal is determined along number and the position coordinates of strip width direction upper plate shape characteristic point; Consider that the strip width that can often run in cold rolled strip steel production and plate profile instrument measuring roller width not of uniform sizely cause, the unfavorable factor such as strip running deviation and the skew of measuring roller center in cold-rolled process, accurately determined the position coordinates of plate profile instrument effective measuring area central point, can Auto-matching good plate profile instrument effective measuring area central point and plate shape characteristic point between position relationship, final interpolation calculation goes out the plate shape value at high-precision each plate shape characteristic point place, for realizing the closed-loop control of high-precision plate shape, provides essential precondition.

The depression of order processing method of cold-rolled strip steel shape measuring-signal measured value provided by the invention adopts when solving its technical problem technical scheme comprises the following steps:

1. determine plate profile instrument effective measuring area central point and the corresponding position coordinates on the strip width direction thereof:

According to product specification and the successive plates shape control algolithm of cold-strip steel, the requirement of Shape signal is determined along number and the position coordinates of strip width direction upper plate shape characteristic point.Product specification provides the width information with steel, and successive plates shape control algolithm has proposed requirement to number and the normalization relative position coordinates of the plate shape measurement value that the plate shape measurement system can provide.

Suppose that first strip width is Lmm, successive plates shape control algolithm needs the plate shape measurement system that m plate shape measurement value is provided when calculating, and the normalization relative position coordinates of this m plate shape measurement value vector is [x ₁x ₂Λ x _m], 0<x is arranged here ₁<x ₂<Λ<x _M-1<x _m<1.So, can determine that along the number of strip width direction upper plate shape characteristic point be m, and its position coordinates computing formula from the fore side to the transmission side is along the strip width direction:

[y ₁ y ₂ Λ y _m]＝[Lx ₁ Lx ₂ Λ Lx _m]，

Then suppose that Δ is the strip running deviation amount, δ is plate profile instrument measuring roller center departure, and, all to be partial to fore side for just, is partial to transmission side for negative.The wide measured zone width of plate profile instrument measuring roller is wb, and narrow measured zone width is ws, and it each side has N as benchmark take plate profile instrument measuring roller center line _bIndividual wide measured zone, all the other are narrow measured zone.When opposite side section overlay length carried out validity check, the critical value during for the wide measured zone of plate profile instrument measuring roller was B1, and the critical value during narrow measured zone is B2.By analyzing the relation between each physical quantity in actual production, the calculating of this step can be divided into to following four kinds of situations:

1) when $\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+|\mathrm{\&Delta;}-\mathrm{\&delta;}|\&le;N_b\&times;\mathrm{wb}$ The time, the two ends on the strip width direction are all dropped in the wide measured zone of plate profile instrument.

This moment, the wide measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}}{\mathrm{wb}}\right),$

In formula, ceil () is bracket function, and the functional operation rule is the integer greater than the minimum of independent variable for value.And the wide measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is:

$\mathrm{nfr}=\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}}{\mathrm{wb}}\right).$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-(\mathrm{nfl}-1)\&times;\mathrm{wb}.$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-(\mathrm{nfr}-1)\&times;\mathrm{wb}.$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it; Then determine the position coordinates on the strip width direction corresponding to effective measuring area:

If a) widthleft>B1 and widthright>B1 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all effective, so the plate profile instrument effective measuring area is nfl+nfr, and their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+wb/2，

z(i)＝z(i-1)+wb，3≤i≤nfl+nfr-1

z(nfl+nfr)＝z(nfl+nfr-1)+wb/2+widthright/2，

B) if widthleft≤B1 and widthright>B1 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of fore side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft+wb/2，

z(i)＝z(i-1)+wb，2≤i≤nfl+nfr-2 。

z(nfl+nfr-1)＝z(nfl+nfr-2)+wb/2+widthright/2，

C) if widthleft>B1 and widthright≤B1 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of transmission side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+wb/2， 。

z(i)＝z(i-1)+wb，3≤i≤nfl+nfr-1

D) if widthleft≤B1 and widthright≤B1 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all invalid, so the plate profile instrument effective measuring area is nfl+nfr-2, and their position coordinateses on the strip width direction are:

z(1)＝widthleft+wb/2，

z(i)＝z(i-1)+wb，2≤i≤nfl+nfr-2

2) when $\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}>N_b\&times;\mathrm{wb}$ And $\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}<N_b\&times;\mathrm{wb}$ The time, the strip width direction drops in the narrow measured zone of plate profile instrument near fore side one end, and drops in the wide measured zone of plate profile instrument near transmission side one end.

This moment, the measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=N_b+\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right).$

And the wide measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is:

$\mathrm{nfr}=\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}}{\mathrm{wb}}\right).$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfl}-N_b-1)\&times;\mathrm{ws}.$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-(\mathrm{nfr}-1)\&times;\mathrm{wb}.$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it.Then determine the position coordinates on the strip width direction corresponding to effective measuring area:

If a) widthleft>B2 and widthright>B1 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all effective, so the plate profile instrument effective measuring area is nfl+nfr, and their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，3≤i≤nfl-N _b，

z(nfl-N _b+1)＝z(nfl-N _b)+ws/2+wb/2，

z(i)＝z(i-1)+wb，nfl-N _b+2≤i≤nfl+nfr-1

z(nfl+nfr)＝z(nfl+nfr-1)+wb/2+widthright/2，

B) if widthleft≤B2 and widthright>B1 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of fore side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，2≤i≤nfl-N _b-1，

z(nfl-N _b)＝z(nfl-N _b-1)+ws/2+wb/2， 。

z(i)＝z(i-1)+wb，nfl-N _b+1≤i≤nfl+nfr-2

z(nfl+nfr-1)＝z(nfl+nfr-2)+wb/2+widthright/2，

C) if widthleft>B2 and widthright≤B1 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of transmission side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，3≤i≤nfl-N _b， 。

z(nfl-N _b+1)＝z(nfl-N _b)+ws/2+wb/2，

z(i)＝z(i-1)+wb，nfl-N _b+2≤i≤nfl+nfr-1

D) if widthleft≤B2 and widthright≤B1 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all invalid, so the plate profile instrument effective measuring area is nfl+nfr-2, and their position coordinateses on the strip width direction are:

z(1)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，2≤i≤nfl-N _b-1，

z(nfl-N _b)＝z(nfl-N _b-1)+ws/2+wb/2，

z(i)＝z(i-1)+wb，nfl-N _b+1≤i≤nfl+nfr-2

3) when $\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}<N_b\&times;\mathrm{wb}$ And $\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}>N_b\&times;\mathrm{wb}$ The time, the strip width direction drops in the wide measured zone of plate profile instrument near fore side one end, and drops in the narrow measured zone of plate profile instrument near transmission side one end.

This moment, the measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}}{\mathrm{wb}}\right);$

And the wide measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is:

$\mathrm{nfr}=N_b+\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right);$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-(\mathrm{nfl}-1)\&times;\mathrm{wb};$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfr}-N_b-1)\&times;\mathrm{ws}.$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it.Then determine the position coordinates on the strip width direction corresponding to effective measuring area:

If a) widthleft>B1 and widthright>B2 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all effective, so the plate profile instrument effective measuring area is nfl+nfr, and their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+wb/2，

z(i)＝z(i-1)+wb，3≤i≤nfl+N _b，

z(nfl+N _b+1)＝z(nfl+N _b)+ws/2+wb/2， ；

z(i)＝z(i-1)+ws，nfl+N _b+2≤i≤nfl+nfr-1

z(nfl+nfr)＝z(nfl+nfr-1)+ws/2+widthright/2，

B) if widthleft≤B1 and widthright>B2 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of fore side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft+wb/2，

z(i)＝z(i-1)+wb，2≤i≤nfl+N _b-1，

z(nfl+N _b)＝z(nfl+N _b-1)+ws/2+wb/2， ；

z(i)＝z(i-1)+ws，nfl+N _b+1≤i≤nfl+nfr-2

z(nfl+nfr-1)＝z(nfl+nfr-2)+ws/2+widthright/2，

C) if widthleft>B1 and widthright≤B2 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of transmission side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+wb/2，

z(i)＝z(i-1)+wb，3≤i≤nfl+N _b， ；

z(nfl+N _b+1)＝z(nfl+N _b)+ws/2+wb/2，

z(i)＝z(i-1)+ws，nfl+N _b+2≤i≤nfl+nfr-1

D) if widthleft≤B1 and widthright≤B2 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all invalid, so the plate profile instrument effective measuring area is nfl+nfr-2, and their position coordinateses on the strip width direction are:

z(1)＝widthleft+wb/2，

z(i)＝z(i-1)+wb，2≤i≤nfl+N _b-1，

z(nfl+N _b)＝z(nfl+N _b-1)+ws/2+wb/2，

z(i)＝z(i-1)+ws，nfl+N _b+1≤i≤nfl+nfr-2

4) when $\frac{L}{2}-|\mathrm{\&Delta;}-\mathrm{\&delta;}|\&GreaterEqual;N_b\&times;\mathrm{wb}$ The time, the two ends of strip width direction are all dropped in the narrow measured zone of plate profile instrument.

This moment, the measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=N_b+\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right);$

And the measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is

$\mathrm{nfr}=N_b+\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right);$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfl}-N_b-1)\&times;\mathrm{ws};$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfr}-N_b-1)\&times;\mathrm{ws}.$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it.Then determine the position coordinates on the strip width direction corresponding to effective measuring area:

If a) widthleft>B2 and widthright>B2 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all effective, so the plate profile instrument effective measuring area is nfl+nfr, and their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，3≤i≤nfl-N _b，

z(nfl-N _b+1)＝z(nfl-N _b)+ws/2+wb/2，

z(i)＝z(i-1)+wb，fnl-N _b+2≤i≤nfl+N _b，

z(nfl+N _b+1)＝z(nfl+N _b)+ws/2+wb/2， 。

z(i)＝z(i-1)+ws，nfl+N _b+2≤i≤nfl+nfr-1

z(nfl+nfr)＝z(nfl+nfr-1)+ws/2+widthright/2，

B) if widthleft≤B2 and widthright>B2 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of fore side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，2≤i≤nfl-N _b-1，

z(nfl-N _b)＝z(nfl-N _b-1)+ws/2+wb/2，

z(i)＝z(i-1)+wb，nfl-N _b+1≤i≤nfl+N _b-1， 。

z(nfl+N _b)＝z(nfl+N _b-1)+ws/2+wb/2，

z(i)＝z(i-1)+ws，nfl+N _b+1≤i≤nfl+nfr-2

z(nfl+nfr-1)＝z(nfl+nfr-2)+ws/2+widthright/2，

C) if widthleft>B2 and widthright≤B2 set up simultaneously, invalid near the incomplete overlay area of the band steel measured value of transmission side, so the plate profile instrument effective measuring area is nfl+nfr-1, their position coordinateses on the strip width direction are:

z(1)＝widthleft/2，

z(2)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，3≤i≤nfl-N _b，

z(nfl-N _b+1)＝z(nfl-N _b)+ws/2+wb/2， 。

z(i)＝z(i-1)+wb，nfl-N _b+2≤i≤nfl+N _b，

z(nfl+N _b+1)＝z(nfl+N _b)+ws/2+wb/2，

z(i)＝z(i-1)+ws，nfl+N _b+2≤i≤nfl+nfr-1

D) if widthleft≤B2 and widthright≤B2 set up simultaneously, two of the outermost band incomplete overlay area of steel measured values are all invalid, so the plate profile instrument effective measuring area is nfl+nfr-2, and their position coordinateses on the strip width direction are:

z(1)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，2≤i≤nfl-N _b-1，

z(nfl-N _b)＝z(nfl-N _b-1)+ws/2+wb/2，

z(i)＝z(i-1)+wb，nfl-N _b+1≤i≤nfl+N _b-1，

z(nfl+N _b)＝z(nfl+N _b-1)+ws/2+wb/2，

z(i)＝z(i-1)+ws，nfl+N _b+1≤i≤nfl+nfr-2，

2. mate the relation between plate profile instrument effective measuring area central point and plate shape characteristic point:

Above-mentioned steps has been determined the position coordinates of plate shape characteristic point and plate profile instrument effective measuring area central point, determines now the position relationship between them, determines namely which two plate profile instrument effective measuring area central point is each plate shape characteristic point be positioned in the middle of.We adopt the matrix M of 2 * m dimension to represent the relation between the effective measurement point of plate profile instrument and plate shape characteristic point:

$M=\left[\begin{array}{cccc}{M}_{11}& {\mathrm{<figure-callout\; id="12"\; label="M"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">M</figure-callout>}}_{12}& \mathrm{\&Lambda;}& M_{1m}\\ M_{21}& {\mathrm{<figure-callout\; id="22"\; label="M"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">M</figure-callout>}}_{22}& \mathrm{\&Lambda;}& M_{2m}\end{array}\right].$

Wherein, two element M of the j of matrix M row _1jAnd M _2jRepresent respectively j bound corresponding to plate shape characteristic point, namely j plate shape characteristic point is positioned at M _1jIndividual and M _2jBetween individual plate profile instrument effective measuring area central point.

The calculation procedure of matrix M is as follows:

Step 1: make i=1 and j=1, obtain the effective measurement point z of plate profile instrument (1) and z (n);

Step 2: compare y _iWith the magnitude relationship of z (1) and z (n), if y _i≤ z (1) makes M _1i=M _2i=1; If y _i>=z (n) makes M _1i=M _2i=n;

Step 3: compare y _iAnd the magnitude relationship between z (j) and z (j+1), if there is y _i<z (j) or y _i>z (j+1) sets up, and makes j=j+1, until the j that obtains makes z (j)≤y _i≤ z (j+1) sets up;

Step 4: give M after step 3 obtains the j satisfy condition _1iAnd M _2iAssignment: M _1i=j, M _2i=j+1;

Step 5: make i=i+1; If there is i≤m to go to step 2, otherwise, finish to calculate.

3. the depression of order that completes m plate shape characteristic point place plate shape value is processed calculating:

The purpose of this step is by n the effective measured value σ of plate profile instrument (1), σ (2), and Λ, σ (n) and matrix M are come m the plate shape value ρ (1) at computing board shape characteristic point place, ρ (2), Λ, ρ (m).Its computing formula is:

If M is arranged _2i≠ M _2i,

$\mathrm{\&rho;}\left(i\right)=\mathrm{\&sigma;}\left(M_{1i}\right)+(\mathrm{\&sigma;}\left(M_{2i}\right)-\mathrm{\&sigma;}\left(M_{1i}\right))\&times;\frac{y_i-z\left(M_{1i}\right)}{z\left(M_{2i}\right)-z\left(M_{1i}\right)},$ i＝1，2，Λ，m ；

If M is arranged _2i=M _2i, ρ (i)=σ (M _1i), i=1,2, Λ, m.

Through above-mentioned steps, the present invention has realized the depression of order of cold-rolled strip steel shape measuring-signal measured value is processed.

The present invention compared with prior art, has following main beneficial effect:

One. can eliminate effectively that strip width and plate-shaped sensing roller width are inconsistent, the unfavorable factor such as strip running deviation and plate-shaped sensing roller disalignment, position relationship between Auto-matching plate profile instrument measured value and plate shape characteristic point plate shape value, then interpolation calculation goes out high-precision plate shape characteristic point plate shape value, provides it to follow-up plate shape control algolithm.The inventive method is that solid foundation has been established in high-precision cold-rolled strip steel shape control.

They are two years old. have on-line automatic computing function.

The factors such as strip running deviation and the skew of measuring roller center are calculated plate profile instrument effective measuring area central point number and position coordinates by considering that strip width and plate profile instrument measuring roller width not of uniform sizely cause, in cold-rolled process, and itself and plate shape characteristic point are carried out to location matches, then by the position relationship interpolation calculation after coupling, go out the plate shape value at each plate shape characteristic point place.In computational process, as long as input strip width, plate profile instrument measured zone width and strip running deviation and measuring roller center side-play amount, just can automatically calculate high-precision plate shape characteristic point plate shape value.

They are three years old. for improving the cold-rolled strip steel shape quality, lay the first stone.

Can adapt to the specification requirement of cold rolled sheet shape control system to the plate shape measurement signal for plat control system provides high-precision plate shape measurement signal, for improving the cold-rolled strip steel shape quality, lay the first stone.

The accompanying drawing explanation

Fig. 1 is schematic flow sheet of the present invention.

Fig. 2 is the corresponding position coordinates schematic diagram of the present embodiment plate shape characteristic point.

Fig. 3 is the corresponding position coordinates schematic diagram of plate profile instrument effective measuring area central point that the present invention determines.

The corresponding upper and lower plate profile instrument effective measuring area central point schematic diagram of belt plate shape characteristic point that Fig. 4 determines by the present invention.

Fig. 5 is conventional panels shape characteristic point calculated value curve and the effective measured value curve of cold-rolled strip steel shape instrument comparison diagram.

Fig. 6 is cold-rolled strip steel shape characteristic point calculated value curve of the present invention and the effective measured value curve of cold-rolled strip steel shape instrument comparison diagram.

The specific embodiment

The invention will be further described below in conjunction with embodiment and accompanying drawing, but do not limit the present invention.

The present embodiment is disclosed is the depression of order processing method of a kind of plate shape measurement signal measurements in certain working roll six-roll cold mill plat control system that can move horizontally.Plate Profile Measuring System adopts the ABB plate shape roller of Sweden, this plate shape roller roller footpath 313mm, by the single solid steel axle, formed, broad ways is divided into a measured zone every 26mm or 52mm, in each measured zone, in the surrounding of measuring roller, be uniform-distribution with four grooves to place magnetoelasticity power sensor vertically, the outside of sensor is wrapped up by steel loop.Product specification (thickness * width): 0.35mm * 1250mm, steel grade: high grade non-oriented HNGO, mill speed: maximum mill speed 900m/min.can find out that product strip width (1250mm) is not the integral multiple of plate profile instrument measured zone width (26mm or 52mm), in the six-roll cold mill production process, inevitably there is in addition the skew of the relative milling train center line in plate profile instrument center, the generation of the phenomenons such as strip running deviation, the appearance of these side-play amounts causes with steel at the interregional play of plate profile instrument different measuring, cause plate shape measurement signaling point and plat control system to need plate shape characteristic point not mate, thereby can't directly in plat control system, directly use these plate shape measurement signals, after need to processing them, import again plat control system.In actual cold rolled strip steel production, if on these unfavorable factors, do not process or process the bad precision that all can directly affect plate shape measurement, and not high plate shape measurement precision can cause plate shape control deleterious even malfunctioning, and this is also a technical barrier of cold-strip steel closed loop feedback control field.The unfavorable factors such as the present invention can effectively eliminate strip width and the plate-shaped sensing roller width is inconsistent, strip running deviation and plate-shaped sensing roller disalignment, position relationship between Auto-matching plate profile instrument measured value and plate shape characteristic point plate shape value, then interpolation calculation goes out high-precision plate shape characteristic point plate shape value, for high-precision cold-rolled strip steel shape, controls and has established solid foundation.

The method that the present embodiment provides adopts and comprises the following steps:

1. collect operation of rolling parameter information:

This step main purpose is during the depression of order processing method that is collected in the plate shape measurement signal measurements is calculated, to relate to operation of rolling parameter: strip width L=1250mm, strip running deviation Δ=20mm, plate profile instrument measuring roller center departure δ=10mm, respectively there are 8 52mm measured zone plate profile instrument measuring roller medium line both sides, and all the other are the 26mm measured zone.According to plate profile instrument measuring principle and rolling mill practice, consider, the effective length boundary of the incomplete overlay area of limit section is set as: B1=30mm when limit section measured zone is the 52mm measured zone, B2=15mm when limit section measured zone is the 26mm measured zone.

2. determine plate shape characteristic point number and position coordinates thereof:

Plate shape control algolithm follow-up in the present embodiment adopts the multivariable system optimizing control, during its online calculating in real time, requires the plate shape measurement system to provide the plate shape value along equally distributed 20 points on the strip width direction to it.So plate shape characteristic point number is decided to be m=20, these 20 characteristic points are listed in table 1 along the position coordinate value of strip width direction from the fore side to the transmission side.Fig. 2 be these 20 plate shape characteristic points corresponding along the strip width direction position coordinates schematic diagram from the fore side to the transmission side.

3. determine the effective measurement point of plate profile instrument and position coordinates thereof:

According to the operation of rolling parameter information of collecting in step (1), we can obtain:

$\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}=635\mathrm{mm},$ $\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}=615\mathrm{mm},$ N _b* wb=416mm, namely $\frac{L}{2}-|\mathrm{\&Delta;}-\mathrm{\&delta;}|\&GreaterEqual;N_b\&times;\mathrm{wb}$ Set up,

All drop in the narrow measured zone of plate profile instrument this moment with the two ends of steel broad ways.If take plate profile instrument measuring roller center line as benchmark, the measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers is:

$\mathrm{nfl}=N_b+\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right)=17$

And the measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is:

$\mathrm{nfr}=N_b+\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right)=16$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{\mathrm{<figure-callout\; id="2"\; label="L"\; filenames="HDA0000090755140000031.png"\; state="\{\{state\}\}">L</figure-callout>}}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfl}-N_b-1)\&times;\mathrm{ws}=11\mathrm{mm}$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfr}-N_b-1)\&times;\mathrm{ws}=17\mathrm{mm}$

Can find out, have widthleft≤B2 and widthright>B2 to set up simultaneously this moment, also just mean that band steel near the fore side outermost end does not cover measured zone fully and should be rejected, the plate profile instrument effective measuring area starts counting from first measured zone that is completely covered near fore side, total nfl+nfr-1.The position coordinates computing formula from the fore side to the transmission side in the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft+ws/2，

z(i)＝z(i-1)+ws，2≤i≤8，

z(9)＝z(8)+ws/2+wb/2，

z(i)＝z(i-1)+wb，10≤i≤24，

z(25)＝z(24)+ws/2+wb/2，

z(i)＝z(i-1)+ws，26≤i≤31

z(32)＝z(31)+ws/2+widthright/2，

Fig. 3 be these 32 plate profile instrument effective measuring area central points corresponding along the strip width direction position coordinates schematic diagram from the fore side to the transmission side.

4. mate the relation between plate profile instrument effective measuring area central point and plate shape characteristic point:

According to the calculation procedure that provides in summary of the invention, the position relationship matrix M that calculates between expression plate profile instrument effective measuring area central point and plate shape characteristic point is:

$M=\left[\begin{array}{cccccccccccccccccccc}1& 3& 6& 8& 9& 10& 12& 13& 14& 15& 16& 18& 19& 20& 21& 22& 24& 26& 28& 30\\ 2& 4& 7& 9& 10& 11& 13& 14& 15& 16& 17& 19& 20& 21& 22& 23& 25& 27& 29& 31\end{array}\right].$

Illustrate, the 3rd column element of matrix M is respectively M ₁₃=6 and M ₂₃=7, that is to say, the 3rd position coordinates with the steel characteristic point is between the 6th and the 7th plate profile instrument effective measuring area center position coordinate.Fig. 4 is the corresponding upper and lower plate profile instrument effective measuring area central point schematic diagram of each plate shape characteristic point.

5. the plate shape at each plate shape characteristic point place of line computation is worth:

In the operation of rolling, the plate shape value representation of a certain moment 32 effective measurement points of plate profile instrument is σ (1), σ (2), Λ, σ (32), in conjunction with the matrix M that previous step calculates, the plate shape at 20 plate shape characteristic point places is worth ρ (1), ρ (2), Λ, the computing formula of ρ (20) is:

$\mathrm{\&rho;}\left(i\right)=\mathrm{\&sigma;}\left(M_{1i}\right)+(\mathrm{\&sigma;}\left(M_{2i}\right)-\mathrm{\&sigma;}\left(M_{1i}\right))\&times;\frac{y_i-z\left(M_{1i}\right)}{z\left(M_{2i}\right)-z\left(M_{1i}\right)},$ i＝1，2，Λ，20

Present existing conventional plate shape measurement signal measurements processing method does not consider strip width and plate profile instrument measuring roller width not of uniform sizely causes, the unfavorable factor such as strip running deviation and the skew of measuring roller center in cold-rolled process, and the method that also finds no can be good at mating the relation between plate profile instrument effective measuring area central point and plate shape characteristic point.

Plate profile instrument effective measured value curve and the plate shape characteristic point calculated value curve map of Fig. 5 for adopting conventional depression of order processing method to obtain.By Fig. 5, find out between the two and have relatively large deviation, be difficult to meet the requirement of high accuracy plate shape measurement.And the depression of order processing method of the cold-rolled strip steel shape measuring-signal measured value that the present invention proposes can well address the above problem.

Fig. 6 is the effective measured value curve of plate profile instrument and plate shape characteristic point calculated value curve map of the present invention.As seen from Figure 6, the plate shape characteristic point plate shape curve that the present invention calculates can approach actual belt plate shape and distributes with very high-precision, for high-precision plate shape is controlled, lays a solid foundation.

Subordinate list

20 characteristic points of table 1 are the position coordinate value from the fore side to the transmission side (mm of unit) along the strip width direction

y 1	y 2	y 3	y 4	y 5	y 6	y 7
							31.3	93.8	156.3	218.8	281.3	343.8	406.3
y 8	y 9	y 10	y 11	y 12	y 13	y 14
							468.8	531.3	593.8	656.3	718.8	781.3	843.8
y 15	y 16	y 17	y 18	y 19	y 20
							906.3	968.8	1031.3	1093.8	1156.3	1218.8

Claims (6)

1. the depression of order processing method of a cold-rolled strip steel shape measuring-signal measured value, is characterized in that: according to product specification and the successive plates shape control algolithm of cold-strip steel, the requirement of Shape signal is determined along number and the position coordinates of strip width direction upper plate shape characteristic point; The unfavorable factor that consider that the strip width that can often run in cold rolled strip steel production and plate profile instrument measuring roller width not of uniform sizely cause, strip running deviation and measuring roller center is offset in cold-rolled process, accurately determined the position coordinates of plate profile instrument effective measuring area central point, can Auto-matching good plate profile instrument effective measuring area central point and plate shape characteristic point between position relationship, final interpolation calculation goes out the plate shape value at high-precision each plate shape characteristic point place, for realizing the closed-loop control of high-precision plate shape, provides essential precondition;

The depression of order processing method of described cold-rolled strip steel shape measuring-signal measured value is to adopt the method that comprises the following steps:

(1) determine plate profile instrument effective measuring area central point and the corresponding position coordinates on the strip width direction thereof:

Suppose that first strip width is Lmm, successive plates shape control algolithm needs the plate shape measurement system that m plate shape measurement value is provided when calculating, and the normalization relative position coordinates of this m plate shape measurement value vector is [x ₁x ₂X _m], 0<x is arranged here ₁<x ₂<...<x _M-1<x _m<1; So, along the position coordinates computing formula of strip width direction upper plate shape characteristic point, be:

[y ₁ y ₂ … y _m]=[L×x ₁ … L×x ₂ … L×x _m]，

Then suppose that Δ is the strip running deviation amount, δ is plate profile instrument measuring roller center departure, and, all to be partial to fore side for just, is partial to transmission side for negative; The wide measured zone width of plate profile instrument measuring roller is wb, and narrow measured zone width is ws, and it each side has N as benchmark take plate profile instrument measuring roller center line _bIndividual wide measured zone, all the other are narrow measured zone; When opposite side section overlay length carried out validity check, the critical value during for the wide measured zone of plate profile instrument measuring roller was B1, and the critical value during narrow measured zone is B2; Wherein, the unit of Δ, δ, wb, ws, B1, B2 is mm;

By analyzing the relation between each physical quantity in actual production, determine as follows the position coordinates on the strip width direction corresponding to plate profile instrument effective measuring area central point:

1) when

The time, the two ends on the strip width direction are all dropped in the wide measured zone of plate profile instrument,

This moment, the wide measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}}{\mathrm{wb}}\right),$

In formula, ceil () is bracket function, and the functional operation rule is the integer greater than the minimum of independent variable for value, and the wide measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is:

$\mathrm{nfr}=\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}}{\mathrm{wb}}\right),$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{L}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-(\mathrm{nfl}-1)\&times;\mathrm{wb},$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-(\mathrm{nfr}-1)\&times;\mathrm{wb},$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it; Then determine the position coordinates on the strip width direction corresponding to plate profile instrument effective measuring area central point:

2) when

And

The time, the strip width direction drops in the narrow measured zone of plate profile instrument near fore side one end, and drops in the wide measured zone of plate profile instrument near transmission side one end,

This moment, the measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=N_b+\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right),$

And the wide measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is:

$\mathrm{nfr}=\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}}{\mathrm{wb}}\right),$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{L}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfl}-N_b-1)\&times;\mathrm{ws},$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-(\mathrm{nfr}-1)\&times;\mathrm{wb},$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it, then determines the position coordinates on the strip width direction corresponding to plate profile instrument effective measuring area central point;

3) when

And The time, the strip width direction drops in the wide measured zone of plate profile instrument near fore side one end, and drops in the narrow measured zone of plate profile instrument near transmission side one end,

This moment, the measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}}{\mathrm{wb}}\right),$

And the wide measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is:

$\mathrm{nfr}=N_b+\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right),$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{L}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-(\mathrm{nfl}-1)\&times;\mathrm{wb},$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfr}-N_b-1)\&times;\mathrm{ws},$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it, then determines the position coordinates on the strip width direction corresponding to plate profile instrument effective measuring area central point;

4) when

The time, the two ends of strip width direction are all dropped in the narrow measured zone of plate profile instrument,

This moment, the measured zone number that the plate profile instrument measuring roller tape steel of close fore side covers was take plate profile instrument measuring roller center line as benchmark:

$\mathrm{nfl}=N_b+\mathrm{ceil}\left(\frac{L/2+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right),$

And the measured zone number that the plate profile instrument measuring roller tape steel of close transmission side covers is

$\mathrm{nfr}=N_b+\mathrm{ceil}\left(\frac{L/2-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}}{\mathrm{ws}}\right),$

The band steel overlay length of the outermost measured zone that close fore side and tape steel cover is:

$\mathrm{widthleft}=\frac{L}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-(\mathrm{nfl}-N_b-1)\&times;\mathrm{ws},$

The band steel overlay length of the outermost measured zone that close transmission side and tape steel cover is:

$\mathrm{widthright}=\frac{L}{2}-\mathrm{\&Delta;}+\mathrm{\&delta;}-N_b\&times;\mathrm{wb}-({\mathrm{nfr}-N}_b-1)\&times;\mathrm{ws},$

Opposite side section overlay length carries out validity check, if this limit section measured zone measured value is effective greater than critical value, otherwise gives up it, then determines the position coordinates on the strip width direction corresponding to plate profile instrument effective measuring area central point;

(2) relation between coupling plate profile instrument effective measuring area central point and plate shape characteristic point:

Above-mentioned steps has been determined the position coordinates of plate shape characteristic point and plate profile instrument effective measuring area central point, determine now the position relationship between them, determine namely which two plate profile instrument effective measuring area central point is each plate shape characteristic point be positioned in the middle of, its method is to adopt the matrix M of 2 * m dimension to represent the relation between plate profile instrument effective measuring area central point and plate shape characteristic point:

$M=\left[\begin{array}{cccc}{M}_{11}& M_{12}& ...& M_{1m}\\ M_{21}& M_{22}& ...& M_{2m}\end{array}\right],$

Wherein, two element M of the j of matrix M row _1jAnd M _2jRepresent respectively j bound corresponding to plate shape characteristic point, namely j plate shape characteristic point is positioned at M _1jIndividual and M _2jBetween individual plate profile instrument effective measuring area central point;

(3) depression of order that completes m plate shape characteristic point place plate shape value is processed calculating:

By n the effective measured value σ of plate profile instrument (1), σ (2) ..., σ (n) and matrix M are carried out m the plate shape value ρ (1) at computing board shape characteristic point place, ρ (2) ..., ρ (m); Its method is:

If M is arranged _1i≠ M _2i,

$\mathrm{\&rho;}\left(i\right)=\mathrm{\&sigma;}\left(M_{1i}\right)+(\mathrm{\&sigma;}\left(M_{2i}\right)-\mathrm{\&sigma;}\left(M_{1i}\right))\&times;\frac{y_i-z\left(M_{1i}\right)}{z\left(M_{2i}\right)-z\left(M_{1i}\right)},i=\mathrm{1,2},...,m,$

If M is arranged _1i=M _2i, ρ (i)=σ (M _1i), i=1,2 ..., m;

Wherein,

Z (*): the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding;

z(M _1i): M _1jPosition coordinates on the strip width direction corresponding to individual plate profile instrument effective measuring area central point;

z(M _2i): M _2jPosition coordinates on the strip width direction corresponding to individual plate profile instrument effective measuring area central point;

Through above-mentioned steps, realize the depression of order of cold-rolled strip steel shape measuring-signal measured value is processed.

2. the depression of order processing method of cold-rolled strip steel shape measuring-signal measured value according to claim 1, is characterized in that in step 1), according to following step, determines the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding:

If a) widthleft>B1 and widthright>B1 set up simultaneously, two the band incomplete overlay area of steel measured values of outermost are all effective, therefore the plate profile instrument effective measuring area is nfl+nfr, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft/2,

z(2)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,3≤i≤nfl+nfr-1,

z(nfl+nfr)＝z(nfl+nfr-1)+wb/2+widthright/2,

B) if widthleft≤B1 and widthright>B1 set up simultaneously, the incomplete overlay area of band steel measured value near fore side is invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-1, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,2≤i≤nfl+nfr-2,

z(nfl+nfr-1)＝z(nfl+nfr-2)+wb/2+widthright/2,

C) if widthleft>B1 and widthright≤B1 set up simultaneously, the incomplete overlay area of band steel measured value near transmission side is invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-1, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft/2,

z(2)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,3≤i≤nfl+nfr-1,

D) if widthleft≤B1 and widthright≤B1 set up simultaneously, two the band incomplete overlay area of steel measured values of outermost are all invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-2, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,2≤i≤nfl+nfr-2。

3. the depression of order processing method of cold-rolled strip steel shape measuring-signal measured value according to claim 1, is characterized in that step 2) in, according to following step, determine the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding:

If a) widthleft>B2 and widthright>B1 set up simultaneously, two the band incomplete overlay area of steel measured values of outermost are all effective, therefore the plate profile instrument effective measuring area is nfl+nfr, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft/2,

z(2)＝widthleft+ws/2,

z(i)＝z(i-1)+ws,3≤i≤nfl-N _b,

z(nfl-N _b+1)＝z(nfl-N _b)+ws/2+wb/2,

z(i)＝z(i-1)+wb,nfl-N _b+2≤i≤nfl+nfr-1，

z(nfl+nfr)＝z(nfl+nfr-1)+wb/2+widthright/2,

B) if widthleft≤B2 and widthright>B1 set up simultaneously, the incomplete overlay area of band steel measured value near fore side is invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-1, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft+ws/2,

z(i)＝z(i-1)+ws,2≤i≤nfl-N _b-1,

z(nfl-N _b)＝z(nfl-N _b-1)+ws/2+wb/2,

z(i)＝z(i-1)+wb,nfl-N _b+1≤i≤nfl+nfr-2，

z(nfl+nfr-1)＝z(nfl+nfr-2)+wb/2+widthright/2,

C) if widthleft>B2 and widthright≤B1 set up simultaneously, the incomplete overlay area of band steel measured value near transmission side is invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-1, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft/2,

z(2)＝widthleft+ws/2,

z(i)＝z(i-1)+ws,3≤i≤nfl-N _b,

z(nfl-N _b+1)＝z(nfl-N _b)+ws/2+wb/2,

z(i)＝z(i-1)+wb,nfl-N _b+2≤i≤nfl+nfr-1,

D) if widthleft≤B2 and widthright≤B1 set up simultaneously, two the band incomplete overlay area of steel measured values of outermost are all invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-2, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft+ws/2,

z(i)＝z(i-1)+ws,2≤i≤nfl-N _b-1,

z(nfl-N _b)＝z(nfl-N _b-1)+ws/2+wb/2,

z(i)＝z(i-1)+wb,nfl-N _b+1≤i≤nfl+nfr-2。

4. the depression of order processing method of cold-rolled strip steel shape measuring-signal measured value according to claim 1, is characterized in that in step 3), according to following step, determines the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding:

If a) widthleft>B1 and widthright>B2 set up simultaneously, two the band incomplete overlay area of steel measured values of outermost are all effective, therefore the plate profile instrument effective measuring area is nfl+nfr, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft/2,

z(2)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,3≤i≤nfl+N _b,

z(nfl+N _b+1)＝z(nfl+N _b)+ws/2+wb/2,

z(i)＝z(i-1)+ws,nfl+N _b+2≤i≤nfl+nfr-1，

z(nfl+nfr)＝z(nfl+nfr-1)+ws/2+widthright/2,

B) if widthleft≤B1 and widthright>B2 set up simultaneously, the incomplete overlay area of band steel measured value near fore side is invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-1, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,2≤i≤nfl+N _b-1,

z(nfl+N _b)＝z(nfl+N _b-1)+ws/2+wb/2,

z(i)＝z(i-1)+ws,nfl+N _b+1≤i≤nfl+nfr-2，

z(nfl+nfr-1)＝z(nfl+nfr-2)+ws/2+widthright/2,

C) if widthleft>B1 and widthright≤B2 set up simultaneously, the incomplete overlay area of band steel measured value near transmission side is invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-1, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft/2,

z(2)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,3≤i≤nfl+N _b,

z(nfl+N _b+1)＝z(nfl+N _b)+ws/2+wb/2,

z(i)＝z(i-1)+ws,nfl+N _b+2≤i≤nfl+nfr-1，

D) if widthleft≤B1 and widthright≤B2 set up simultaneously, two the band incomplete overlay area of steel measured values of outermost are all invalid, therefore the plate profile instrument effective measuring area is nfl+nfr-2, and the position coordinates on the strip width direction that plate profile instrument effective measuring area central point is corresponding is:

z(1)＝widthleft+wb/2,

z(i)＝z(i-1)+wb,2≤i≤nfl+N _b-1,

z(nfl+N _b)＝z(nfl+N _b-1)+ws/2+wb/2,

z(i)＝z(i-1)+ws,nfl+N _b+1≤i≤nfl+nfr-2。

5. the depression of order processing method of cold-rolled strip steel shape measuring-signal measured value according to claim 1 is characterized in that in step (2), the calculation procedure of described matrix M comprises:

Step 1: make i=1 and j=1, obtain the position coordinates z (1) on the strip width direction and z (n) that plate profile instrument effective measuring area central point is corresponding;

Step 2: compare y _iWith the magnitude relationship of z (1) and z (n), if y _i≤ z (1), make M _1i=M _2i=1; If y _i>=z (n) makes M _1i=M _2i=n;

Step 3: compare y _iAnd the magnitude relationship between z (j) and z (j+1), if there is y _i<z (j) or y _i>z (j+1) sets up, and makes j=j+1, until the j that obtains makes z (j)≤y _i≤ z (j+1) sets up;

Step 4: give M after step 3 obtains the j satisfy condition _1iAnd M _2iAssignment: M _1i=j, M _2i=j+1;

Step 5: make i=i+1; If there is i≤m to go to step 2, otherwise, finish to calculate.

6. the purposes of the described method of arbitrary claim in claim 1 to 5, is characterized in that the application in the quality of the cold-rolled strip steel shape of the method in improving cold-rolled steel strip products.

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