CN102366764A - 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.The control of conventional cold rolling belt plate shape mainly presets with plate shape and is controlled to be the master, does not realize 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 begins to increase the plate shape measurement device and comes online detection band steel exports plate shape; Send the deviation between Target Board shape and the measuring plate shape to plat control system again, online in real time is calculated the regulated quantity of each plate shape regulating and controlling mechanism to reach the purpose of improving strip shape quality.

The plate shape measurement device form is varied, and whether contact with the strip by it can be divided into contact and contactless two kinds.The contact plate profile instrument is compared with contactless plate profile instrument has advantages such as certainty of measurement height, measuring-signal is reliable, antijamming capability is strong; Owing to require the plate shape measurement device to have higher certainty of measurement and reliability in the cold rolling production, so each cold rolled strip steel production enterprise can select the contact plate profile instrument as the plate shape measurement device usually.

Contact plate profile instrument model is in case selected, and its physical size is constant.On the other hand, the product specification that cold rolling enterprise produced is to receive the influence of market order and often 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 take place 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 specification band steel, because 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.The band steel finally can have influence on distribution and size on the plate profile instrument effective measuring area broad ways in the covering situation on the plate shape measurement roller.

The end user of plate shape measurement value is a plat control system, so it need satisfy 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 handled), be worth the plate shape value of representing with on the steel broad ways with the plate shape of limited plate shape characteristic point.When plat control system put into operation, the plate shape value that it needs to obtain these plate shape characteristic points was in real time come the regulated quantity at each plate shape regulating and controlling mechanism of line computation.But, can have in the actual band steel production process 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 the cold-rolled process; In addition, existing plate shape signal depression of order processing method does not have well to mate the position relation between plate profile instrument effective measuring area central point and the plate shape characteristic point.Therefore; Directly the plate profile instrument measuring-signal is not carried out sending plat control system to after traditional depression of order is handled if do not consider these unfavorable factors; Can exist between resulting plate shape value of representing by plate shape characteristic point and the band steel actual plate shape value, seriously run counter to plat control system has the degree of precision requirement to the plate shape measurement value basic principle than large deviation.

The cold rolled sheet shape control technology is caused import cold rolled sheet shape control system price expensive by offshore company monopolizes always; Even after product becomes specification, can not guarantee that system well moves owing to do not grasp core technology 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, unfavorable factor such as strip running deviation and the skew of measuring roller center in the 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; Strip width that this processing method has been considered can often to run in the cold rolled strip steel production and plate profile instrument measuring roller width be not of uniform size to be caused, unfavorable factor such as strip running deviation and the skew of measuring roller center in the cold-rolled process; Accurately confirmed the position coordinates of plate profile instrument effective measuring area central point; Can match the position relation between plate profile instrument effective measuring area central point and the plate shape characteristic point automatically, 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: product specification and successive plates shape control algolithm according to cold-strip steel are confirmed along the number and the position coordinates of strip width direction upper plate shape characteristic point the requirement of plate shape signal; Strip width of considering can often to run in the cold rolled strip steel production and plate profile instrument measuring roller width be not of uniform size to be caused, unfavorable factor such as strip running deviation and the skew of measuring roller center in the cold-rolled process; Accurately confirmed the position coordinates of plate profile instrument effective measuring area central point; Can match the position relation between plate profile instrument effective measuring area central point and the plate shape characteristic point automatically; 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 essential precondition is provided.

The technical scheme that 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 may further comprise the steps:

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

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

The hypothesis strip width is Lmm earlier, and 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 confirm that along the number of strip width direction upper plate shape characteristic point be m, and it along the position coordinates computing formula of strip width direction from the fore side to the transmission side is:

[y ₁?y ₂?Λ?y _m]＝[Lx ₁?Lx ₂?Λ?Lx _m]，

Suppose that then Δ is the strip running deviation amount, δ is a 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, with plate profile instrument measuring roller center line be benchmark its N is each side arranged _bIndividual wide measured zone, all the other are narrow measured zone.When opposite side portion 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.Through analyzing the relation between each physical quantity in the actual production, can the calculating of this step be divided into following four kinds of situation:

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.

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the wide measured zone number that steel covers is:

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

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

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel is:

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

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

A) if widthleft＞B1 and widthright＞B1 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all effective, so the plate profile instrument effective measuring area is that nfl+nfr is individual, 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 that nfl+nfr-1 is individual, 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 that nfl+nfr-1 is individual, 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, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, 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.

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the measured zone number that steel covers is:

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

And near the plate profile instrument measuring roller of transmission side with the wide measured zone number that steel covers be:

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel is:

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

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

A) if widthleft＞B2 and widthright＞B1 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all effective, so the plate profile instrument effective measuring area is that nfl+nfr is individual, 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 that nfl+nfr-1 is individual, 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 that nfl+nfr-1 is individual, 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, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, 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.

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the measured zone number that steel covers is:

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

And near the plate profile instrument measuring roller of transmission side with the wide measured zone number that steel covers be:

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel 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 portion overlay length carries out validity check, if then this limit portion measured zone measured value is effective greater than critical value, otherwise gives up it.Then confirm the position coordinates on the strip width direction that effective measuring area is corresponding:

A) if widthleft＞B1 and widthright＞B2 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all effective, so the plate profile instrument effective measuring area is that nfl+nfr is individual, 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 that nfl+nfr-1 is individual, 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 that nfl+nfr-1 is individual, 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, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, 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.

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the measured zone number that steel covers is:

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

And near the plate profile instrument measuring roller of transmission side with the measured zone number that steel covers do

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel 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 portion overlay length carries out validity check, if then this limit portion measured zone measured value is effective greater than critical value, otherwise gives up it.Then confirm the position coordinates on the strip width direction that effective measuring area is corresponding:

A) if widthleft＞B2 and widthright＞B2 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all effective, so the plate profile instrument effective measuring area is that nfl+nfr is individual, 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 that nfl+nfr-1 is individual, 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 that nfl+nfr-1 is individual, 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, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, 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 the plate shape characteristic point:

Above-mentioned steps has been confirmed the position coordinates of plate shape characteristic point and plate profile instrument effective measuring area central point, confirms the position relation between them now, confirms promptly 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 effective measurement point of plate profile instrument and the 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 the bound that j plate shape characteristic point is corresponding respectively, promptly j plate shape characteristic point is positioned at M _1jIndividual and M _2jBetween the individual plate profile instrument effective measuring area central point.

The calculation procedure of matrix M is following:

Step 1: make i=1 and j=1, obtain 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) then makes M _1i=M _2i=1; If y _i>=z (n) then makes M _1i=M _2i=n;

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

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

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

3. accomplish the depression of order of m plate shape characteristic point place plate shape value and handle 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 calculated m the plate shape value ρ (1) at plate shape characteristic point place, ρ (2), Λ, ρ (m).Its computing formula is:

If M is arranged _2i≠ M _2i, then

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

If M is arranged _2i=M _2i, ρ (i)=σ (M then _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 handled.

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

One of which. can eliminate effectively that strip width and plate-shaped sensing roller width are inconsistent, unfavorable factor such as strip running deviation and plate-shaped sensing roller disalignment; Automatically the position between matching disc shape apparatus measuring value and the plate shape characteristic point plate shape value concerns; Then interpolation calculation goes out high-precision plate shape characteristic point plate shape value, and it is offered 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.

Through consider that strip width and plate profile instrument measuring roller width not of uniform sizely cause, factor such as strip running deviation and the skew of measuring roller center is calculated plate profile instrument effective measuring area central point number and position coordinates in the cold-rolled process; And itself and plate shape characteristic point carried out location matches, concern that through the position after the coupling interpolation calculation goes out the plate shape value at each plate shape characteristic point place then.In computational process,, just can calculate high-precision plate shape characteristic point plate shape value automatically as long as import strip width, plate profile instrument measured zone width and strip running deviation and measuring roller center side-play amount.

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

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

Description of drawings

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

Fig. 2 is the pairing position coordinates sketch map of present embodiment plate shape characteristic point.

The pairing position coordinates sketch map of plate profile instrument effective measuring area central point that Fig. 3 confirms for the present invention.

The corresponding upper and lower plate profile instrument effective measuring area central point sketch map of belt plate shape characteristic point that Fig. 4 confirms for 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 appearance 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 appearance comparison diagram.

The specific embodiment

Below in conjunction with embodiment and accompanying drawing the present invention is described further, but does not limit the present invention.

Present embodiment is disclosed to be 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.The plate shape measurement device adopts the ABB plate shape roller of Sweden; This plate shape roller roller footpath 313mm; Form by the single solid steel axle; Broad ways is every to be divided into a measured zone at a distance from 26mm or 52mm, around measuring roller, is uniform-distribution with four grooves in each measured zone vertically to place magnetoelasticity power sensor, and 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 the generation of the phenomenon such as skew, strip running deviation of the relative milling train center line in plate profile instrument center in addition; 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 match; Thereby can't directly in plat control system, directly use these plate shape measurement signals, import plat control system again after need handling them.In the actual cold rolled strip steel production; If the bad precision that all can directly influence plate shape measurement is not handled or handled to these unfavorable factors; And not high plate shape measurement precision can cause plate shape control deleterious even malfunctioning, and this also is a technical barrier in cold-strip steel close-loop feedback control field.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; Automatically the position between matching disc shape apparatus measuring value and the plate shape characteristic point plate shape value concerns; Then interpolation calculation goes out high-precision plate shape characteristic point plate shape value, for solid foundation has been established in high-precision cold-rolled strip steel shape control.

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

1. collect operation of rolling parameter information:

This step main purpose is to relate to operation of rolling parameter during the depression of order processing method that is collected in the plate shape measurement signal measurements is calculated: 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.Consider that according to plate profile instrument measuring principle and rolling mill practice the effective length boundary of the incomplete overlay area of limit portion is set at: B1=30mm when limit portion measured zone is the 52mm measured zone, B2=15mm when limit portion measured zone is the 26mm measured zone.

2. confirm 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, requires the plate shape measurement system to it plate shape value along equally distributed 20 points on the strip width direction to be provided when its online in real time is calculated.So plate shape characteristic point number is decided to be m=20, these 20 characteristic points are listed in the table 1 along the position coordinate value of strip width direction from the fore side to the transmission side.Fig. 2 is that these 20 plate shape characteristic points are pairing along the position coordinates sketch map of strip width direction from the fore side to the transmission side.

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

According to the operation of rolling parameter information of in step (1), collecting, 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, promptly $\frac{L}{2}-|\mathrm{\&Delta;}-\mathrm{\&delta;}|\&GreaterEqual;N_b\&times;\mathrm{Wb}$ Set up,

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

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

And near the plate profile instrument measuring roller of transmission side with the measured zone number that steel covers be:

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel 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; Just mean that also 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 begins counting from first measured zone by covering fully near fore side, total nfl+nfr-1.What plate profile instrument effective measuring area central point was corresponding in the position coordinates computing formula of strip width direction from the fore side to the transmission side 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 is that these 32 plate profile instrument effective measuring area central points are pairing along the position coordinates sketch map of strip width direction from the fore side to the transmission side.

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

According to the calculation procedure that provides in the summary of the invention, the position relational matrix M that calculates between expression plate profile instrument effective measuring area central point and the 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 that the position coordinates of the 3rd band steel characteristic point is between the 6th and the 7th the 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 sketch map of each plate shape characteristic point.

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

The plate shape value representation of a certain moment 32 effective measurement points of plate profile instrument is σ (1) in the operation of rolling, σ (2), Λ; σ (32), in conjunction with the matrix M that a last step calculates, then 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 take all factors into consideration that strip width and plate profile instrument measuring roller width not of uniform sizely cause, unfavorable factor such as strip running deviation and the skew of measuring roller center in the cold-rolled process, and also finding has method to can be good at mating the relation between plate profile instrument effective measuring area central point and the 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.Find out that by Fig. 5 existence is difficult to satisfy high precision plates shape Testing requirement than large deviation between the two.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 effective measured value curve of plate profile instrument and plate shape characteristic point calculated value curve map of the present invention.Can find out that by Fig. 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 control is laid a solid foundation.

Subordinate list

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

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 (7)

1. the depression of order processing method of a cold-rolled strip steel shape measuring-signal measured value, it is characterized in that: product specification and successive plates shape control algolithm according to cold-strip steel are confirmed along the number and the position coordinates of strip width direction upper plate shape characteristic point the requirement of plate shape signal; Strip width of considering can often to run in the cold rolled strip steel production and plate profile instrument measuring roller width be not of uniform size to be caused, unfavorable factor such as strip running deviation and the skew of measuring roller center in the cold-rolled process; Accurately confirmed the position coordinates of plate profile instrument effective measuring area central point; Can match the position relation between plate profile instrument effective measuring area central point and the plate shape characteristic point automatically; 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 essential precondition is provided.

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 adopting the method that may further comprise the steps:

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

The hypothesis strip width is Lmm earlier, and 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, along the position coordinates computing formula of strip width direction from the fore side to the transmission side be:

[y ₁?y ₂?Λ?y _m]＝[Lx ₁?Lx ₂?Λ?Lx _m]，

Suppose that then Δ is the strip running deviation amount, δ is a 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, with plate profile instrument measuring roller center line be benchmark its N is each side arranged _bIndividual wide measured zone, all the other are narrow measured zone; When opposite side portion 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; Through analyzing the relation between each physical quantity in the actual production, confirm said position coordinates as follows:

1) when $\frac{L}{2}+|\mathrm{\&Delta;}-\mathrm{\&delta;}|\&le;N_b\&times;\mathrm{Wb}$ The time, the two ends on the strip width direction are all dropped in the wide measured zone of plate profile instrument,

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the wide measured zone number that steel covers is:

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

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

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

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

2) when $\frac{L}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}>N_b\&times;\mathrm{Wb}$ 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,

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the measured zone number that steel covers is:

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

And near the plate profile instrument measuring roller of transmission side with the wide measured zone number that steel covers be:

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel is:

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

Opposite side portion overlay length carries out validity check, if then this limit portion measured zone measured value is effective greater than critical value, otherwise gives up it, confirms the position coordinates on the strip width direction that effective measuring area is corresponding then:

3) when $\frac{L}{2}+\mathrm{\&Delta;}-\mathrm{\&delta;}<N_b\&times;\mathrm{Wb}$ 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,

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the measured zone number that steel covers is:

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

And near the plate profile instrument measuring roller of transmission side with the wide measured zone number that steel covers be:

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel 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 portion overlay length carries out validity check, if then this limit portion measured zone measured value is effective greater than critical value, otherwise gives up it, confirms the position coordinates on the strip width direction that effective measuring area is corresponding then:

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,

Be benchmark with plate profile instrument measuring roller center line this moment, near the plate profile instrument measuring roller of fore side with the measured zone number that steel covers is:

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

And near the plate profile instrument measuring roller of transmission side with the measured zone number that steel covers do

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

The band steel overlay length of the outermost measured zone that covers near fore side and with steel 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 covers near transmission side and with steel 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 portion overlay length carries out validity check, if then this limit portion measured zone measured value is effective greater than critical value, otherwise gives up it, confirms the position coordinates on the strip width direction that effective measuring area is corresponding then:

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

Above-mentioned steps has been confirmed the position coordinates of plate shape characteristic point and plate profile instrument effective measuring area central point; Confirm the position relation between them now; Confirm promptly 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 effective measurement point of plate profile instrument and the plate shape characteristic point:

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

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

(3) depression of order of accomplishing m plate shape characteristic point place plate shape value is handled calculating:

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

If M is arranged _2i≠ M _2i, then

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

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

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

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

A) if widthleft＞B1 and widthright＞B1 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all effective, so the plate profile instrument effective measuring area is that nfl+nfr is individual, 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 that nfl+nfr-1 is individual, 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 that nfl+nfr-1 is individual, 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, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, and their position coordinateses on the strip width direction are:

E) if widthleft≤B1 and widthright≤B1 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, 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

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

A) if widthleft＞B2 and widthright＞B1 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all effective, so the plate profile instrument effective measuring area is that nfl+nfr is individual, 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 that nfl+nfr-1 is individual, 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 that nfl+nfr-1 is individual, 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, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, 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

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

A) if widthleft＞B1 and widthright＞B2 set up simultaneously, the incomplete overlay area of outermost two bands steel measured value is all effective, so the plate profile instrument effective measuring area is that nfl+nfr is individual, 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 that nfl+nfr-1 is individual, 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 that nfl+nfr-1 is individual, 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, the incomplete overlay area of outermost two bands steel measured value is all invalid, so the plate profile instrument effective measuring area is that nfl+nfr-2 is individual, 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

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

Step 1: make i=1 and j=1, obtain 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) then makes M _1i=M _2i=1; If y _i>=z (n) then makes M _1i=M _2i=n;

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

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

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

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

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