CN105975969B - A kind of paper horizontal quantification shuttle-scanning data numeral in line method - Google Patents
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Abstract
The invention discloses a kind of paper horizontal quantification shuttle-scanning data numeral in line methods, when being mainly used in paper industry controlling paper horizontal quantification, the contraposition of horizontal quantification shuttle-scanning data.The present invention is mainly characterized by use and mechanical precision, the unrelated relevance function of the factors such as paper lateral drift, and according to the difference of quantitative scanning sensor traffic direction, horizontal quantification data are divided into and runs from transmission side to fore side and runs from fore side to transmission side both direction, it is recorded as different arrays respectively, detect the related coefficient between the obtained data of both direction, then one of direction data obtained are subjected to left or right translation, and detect the related coefficient after translation between the obtained data of obtained data and another direction, contraposition information is determined according to the size of related coefficient.
Description
Technical field
The invention belongs to light industry engineering fields, and in particular to a kind of paper horizontal quantification shuttle-scanning data numeral in line side
Method.
Background technique
In paper industry, the quantitative of paper, moisture and thickness are the important technology indexs for reflecting paper quality, wherein especially
, it is important that paper quantifies, it is used to characterize the paper weight of unit area for it, is the important content of paper quality control.Control
Making target to be achieved is to quantify paper web along paper machine operation direction (referred to as longitudinal) and perpendicular to paper machine operation direction (abbreviation
Laterally) all keep uniform.Longitudinal basis weight fluctuates the variation for being mainly due to sizing concentration and starching flow, and horizontal quantification fluctuates
Mainly as caused by paper machine equipment (homogenate and cloth slurry quality such as head box etc.).The concept of paper machine crosswise joint starts from
Century the fifties, but be limited to condition at that time: paper web is narrow, executing agency, sensor, measuring system and computer technology
Deng crosswise joint technology does not obtain big development, into after the eighties, with the increase of paper machine breadth and mentioning for speed
The requirement of height, especially user to paper quality is higher and higher, and crosswise joint technology obtains more and more attention, measures simultaneously
The development of the technologies such as sensor and computer provides necessary technical support means, pole for the development and application of crosswise joint system
Big accelerates its development speed.
According to the difference of used final executing agency, two ways can be adjusted by labial lamina fine tuning or dilution water respectively
Horizontal quantification is adjusted.Adjusting to it can be according to this step: firstly, obtaining horizontal quantification data by basis weight sensor；
Secondly, running control algolithm after handling data and obtaining output control amount；Then, by control command and control
Amount is sent to actuator, and driving actuator adjusts labial lamina or dilution water valve opening, achievees the purpose that adjust horizontal quantification.It controls herein
During system, as the precondition for obtaining effective control effect, how to obtain quantitative data seems particularly important.
In actual production, horizontal quantification data are acquired by basis weight sensor.Basis weight sensor can be divided into two classes,
One type is sensor array, i.e., is laterally equally spaced several sensors for measuring in paper web.Another kind of is scanning sensing
Device is carried out on scanning gantry along the touring reciprocating motion of paper machine banner direction using the sensor being installed on scanning head
DATA REASONING, cost is relatively low for the sensor of this type, has obtained a large amount of application in practice.Usually scanning sensor is set
The tail portion reel-up in paper machine is set, detects the quantitative data of paper in a manner of back and forth running along paper web transverse direction.Scanning
The reciprocal operation of sensor is divided into from paper machine transmission side to fore side and from fore side to transmission side both direction, in each direction
While upper operation, if the quantitative data that scanning sensor continuous acquisition is done.Since paper web is in longitudinal movement, scanning sensing
Device can only actually measure on paper web the region of " Z " font.This has resulted in the quantitative data scanned relative to entire paper
It is on the low side to open banner, thus the quantitative number obtained in shuttle-scanning both direction should be made full use of during cross basis weight control
According to.
According to the process characteristic of paper machine, obtained from paper machine transmission side to fore side and from fore side to transmission side both direction
To scan data be consistent on waveform, paper web transverse direction same position is during each shuttle-scanning, available two
A quantitative data, finally corresponding quantitative data can be averaged simply by the two quantitative datas for this position
It arrives.But in practice, due to the influence of the factors such as mechanical precision, paper lateral drift, scanning sensor in reciprocal operational process,
The scan data obtained in two directions may have certain deviation on position is corresponding, if being still simply averaged,
May result in paper, laterally above there is relatively large deviation in the quantitative data of a certain position, and then influences final cross basis weight control
Effect.Thus, in addition to can be by improving mechanical precision, the modes such as paper lateral drift being inhibited or tracked past to improve
Outside the corresponding accuracy of multiple scanning Data Position, the accuracy of contraposition is further improved using other methods, it is laterally fixed to being promoted
Control performance is measured, more uniformly spreading paper horizontally also has very big meaning.
Summary of the invention
It is above-mentioned existing to overcome the purpose of the present invention is to provide a kind of paper horizontal quantification shuttle-scanning data numeral in line method
There is defect existing for technology, the present invention improves the corresponding accuracy of shuttle-scanning Data Position, preferably laterally determines to obtain
Control performance is measured, more uniformly spreads paper horizontally.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of paper horizontal quantification shuttle-scanning data numeral in line method is swept in paper cross basis weight control by inspection amount
Sensor is retouched along paper transverse reciprocating scanning process, calculate from transmission side run to fore side and from fore side run to
The related coefficient between quantitative scanning data that transmission side obtains respectively, to obtain pair of Substance shuttle-scanning data
Position information simultaneously carries out data numeral in line.
Further, specifically includes the following steps:
Step 1: scanning sensor is primary along the operation of paper transverse reciprocating, obtain from transmission side run to fore side and from
Fore side runs the quantitative scanning data got respectively to transmission side, and is recorded as N-dimensional array bwx, array bwy respectively,
Wherein N is non-zero positive integer, and expression runs to fore side from transmission side or runs from fore side to the quantitative scanning number of transmission side
Strong point number, the element in array bwx, array bwy are expressed as bwx (i) and bwy (i), and wherein i is non-zero positive integer, i:1,
2,...,N；
Step 2: calculating to run from transmission side and got respectively to fore side and being run from fore side to transmission side
Correlation coefficient ρ between quantitative scanning data, and result is recorded as ρ0；
Step 3: determining that maximal translation amount k, k are non-zero positive integer, and k is less than N, bwx is successively translated to j list to the left
Position, wherein j is non-zero positive integer, and j:1,2 ..., k are amounted to left h times, wherein h is non-zero positive integer, and h is equal to
K, and record to the obtained h array bwxl of leftj, then bwx is successively translated to the right to j unit, total is put down to the right
It moves h times, and records to the obtained h array bwxr of right translationj, it is specific as follows:
When to left,
When to right translation,
Step 4: calculating bwxljRelated coefficient between bwy, is denoted as ρ respectively1..., ρk, calculate bwxrjWith bwy it
Between related coefficient, be denoted as ρ ' respectively1..., ρ 'k, compare ρ0, ρ1..., ρk, ρ '1..., ρ 'kSize, record therein
Maximum value is ρmaxIf maximum value is ρ0, then correct array is aligned using bwx as with bwy, otherwise, record and ρmaxIt is corresponding
J value be jρmaxAnd corresponding translation direction, and if ρmaxCorresponding translation direction is a left side, then with arrayCorrect array is aligned as with bwy, and if ρmaxCorresponding translation direction is the right side, then with arrayMake
To align correct array with bwy；
Step 5: indicating that scanning sensor finally obtained is quantitatively swept along the operation of paper transverse reciprocating is primary with N-dimensional array bw
Data are retouched, and calculate bw.
Further, it calculates to run from transmission side to fore side and running from fore side to transmission side in step 2 and divide
The formula for the correlation coefficient ρ between quantitative scanning data not got are as follows:
Further, bwxl is calculated in step 4j、bwxrjThe formula of related coefficient between bwy are as follows:
When to left,
When to right translation,
Further, the method for bw is calculated in step 5 are as follows:
If maximum value is ρ in step 40, then
Bw (i)=[bwx (i)+bwy (i)]/2 1≤i≤N
Otherwise, it calculates as follows:
If with ρmaxWhen corresponding translation direction is left
If with ρmaxWhen corresponding translation direction is right
Further, specifically includes the following steps:
Step 1: scanning sensor is primary along the operation of paper transverse reciprocating, obtain from transmission side run to fore side and from
Fore side runs the quantitative scanning data got respectively to transmission side, and is recorded as N-dimensional array bwx, array bwy respectively,
Wherein N is non-zero positive integer, and expression runs to fore side from transmission side or runs from fore side to the quantitative scanning number of transmission side
Strong point number, the element in array bwx, array bwy are expressed as bwx (i) and bwy (i), and wherein i is non-zero positive integer, i:1,
2,...,N；
Step 2: calculating to run from transmission side and got respectively to fore side and being run from fore side to transmission side
Correlation coefficient ρ between quantitative scanning data, and result is recorded as ρ0；
Step 3: it determines that maximal translation amount k, k are non-zero positive integer, bwy is successively translated into j unit to left or right,
In, j is non-zero positive integer, and j:1,2 ..., k are amounted to left h times, wherein h is non-zero positive integer, and h is equal to k, and remembers
It records to the obtained h array bwyl of leftj, then bwy is successively translated to the right to j unit, amounted to right translation h times,
And it records to the obtained h array bwyr of right translationj, it is specific as follows:
When to left,
When to right translation,
Step 4: calculating bwyljRelated coefficient between bwx is denoted as ρ b respectively1..., ρ bk, calculate bwyrjWith bwx
Between related coefficient, be denoted as ρ b' respectively1..., ρ b'k, compare ρ0, ρ b1..., ρ bk, ρ b'1..., ρ b'kSize, note
Recording maximum value therein is ρmaxIf maximum value is ρ0, then align correct array using bwy as with bwx, otherwise, record with
ρmaxCorresponding j value is jρmaxAnd corresponding translation direction, and if ρmaxCorresponding translation direction is a left side, then
With arrayCorrect array is aligned as with bwx, and if ρmaxCorresponding translation direction is the right side, then with arrayCorrect array is aligned as with bwx；
Step 5: indicating that scanning sensor finally obtained is quantitatively swept along the operation of paper transverse reciprocating is primary with N-dimensional array bw
Data are retouched, and calculate bw.
Further, it calculates to run from transmission side to fore side and running from fore side to transmission side in step 2 and divide
The formula for the correlation coefficient ρ between quantitative scanning data not got are as follows:
Further, bwyl is calculated in step 4j、bwyrjThe formula of related coefficient between bwx are as follows:
When to left,
When to right translation,
Further, the method for bw is calculated in step 5 are as follows:
If maximum value is ρ in step 40, then
Bw (i)=[bwx (i)+bwy (i)]/2 1≤i≤N
Otherwise, it calculates as follows:
If with ρmaxWhen corresponding translation direction is left
If with ρmaxWhen corresponding translation direction is right
Compared with prior art, the invention has the following beneficial technical effects:
The present invention uses relevance function to the alignment method of paper horizontal quantification shuttle-scanning data, from function representation
Formula can be seen that the factors such as itself and mechanical precision, paper lateral drift are unrelated, even if occurring mechanical precision in paper production not
Foot, paper lateral drift fluctuate larger situation, are also able to achieve reliable shuttle-scanning data numeral in line, improve shuttle-scanning data bit
Corresponding accuracy is set, to obtain better cross basis weight control performance, more uniformly spreads paper horizontally.
Detailed description of the invention
Fig. 1 is horizontal quantification scan data curve obtained when scanning sensor is run from transmission side to fore side；
Fig. 2 is horizontal quantification scan data curve obtained when scanning sensor is run from fore side to transmission side.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing:
Scanning sensor is primary along the operation of paper transverse reciprocating, runs from transmission side to quantifying accessed by fore side and sweeps
Retouch data and curves as shown in Figure 1, run from fore side to quantitative scanning data and curves accessed by transmission side as shown in Fig. 2,
And be recorded as N-dimensional array bwx, array bwy respectively, wherein N is non-zero positive integer, indicate from transmission side run to fore side or from
Fore side runs to the quantitative scanning data of transmission side and counts, and the element in array bwx, array bwy is expressed as bwx (i)
And bwy (i), wherein i is non-zero positive integer, i:1,2 ..., N；
Use formulaCalculate from transmission side run to fore side and from fore side run to
The related coefficient for the quantitative scanning data that transmission side is got respectively, and it is recorded as ρ0；
Determine maximal translation amount k (k is non-zero positive integer), bwx is successively translated to the left j (j is non-zero positive integer, j:1,
2 ..., k) a unit, amount to that (wherein, h is non-zero positive integer, and h is equal to k) secondary, and records to left institute to left h
H obtained array bwxlj, then bwx is successively translated to the right to j unit, amounted to right translation h times, and records and puts down to the right
Move obtained h array bwxrj, it is specific as follows:
When to left,
When to right translation,
Or
Determine maximal translation amount k (k is non-zero positive integer), bwy is successively translated to the left j (j is non-zero positive integer, j:1,
2 ..., k) a unit, amount to that (wherein, h is non-zero positive integer, and h is equal to k) secondary, and records to left institute to left h
H obtained array bwylj, then bwy is successively translated to the right to j unit, amounted to right translation h times, and records and puts down to the right
Move obtained h array bwyrj, it is specific as follows:
When to left,
When to right translation,
Use formulaCalculate bwxljRelated coefficient between bwy, is denoted as respectively
ρ1..., ρk, use formulaCalculate bwxrjRelated coefficient between bwy, is denoted as respectively
ρ'1..., ρ 'k, compare ρ0, ρ1..., ρk, ρ '1..., ρ 'kSize, record maximum value therein be ρmaxIf maximum value is
ρ0, then correct array is aligned using bwx as with bwy, otherwise, record and ρmaxCorresponding j value is jρmax, and in contrast
The translation direction answered, and if ρmaxCorresponding translation direction is a left side, then with arrayCorrectly number is aligned as with bwy
Group, and if ρmaxCorresponding translation direction is the right side, then with arrayCorrect array is aligned as with bwy；
Or
Use formulaCalculate bwyljRelated coefficient between bwx, is denoted as ρ respectively
b1..., ρ bk, use formulaCalculate bwyrjRelated coefficient between bwx, is denoted as ρ respectively
b'1..., ρ b'k, compare ρ0, ρ b1..., ρ bk, ρ b'1..., ρ b'kSize, record maximum value therein be ρmaxIf most
Big value is ρ0, then correct array is aligned using bwy as with bwx, otherwise, record and ρmaxCorresponding j value is jρmax, Yi Jiyu
Corresponding translation direction, and if ρmaxCorresponding translation direction is a left side, then with arrayIt is aligned just as with bwx
True array, and if ρmaxCorresponding translation direction is the right side, then with arrayCorrect array is aligned as with bwx；
Indicate that scanning sensor runs primary finally obtained quantitative scanning number along paper transverse reciprocating with N-dimensional array bw
According to, and bw is calculated,
Bwxl is obtained when bwx is translated to the left or to the rightjOr bwxrjWhen
If ρ0, ρ1..., ρk, ρ '1..., ρ 'kMiddle maximum value ρmaxFor ρ0, then
Bw (i)=[bwx (i)+bwy (i)]/2 1≤i≤N
Otherwise, it calculates as follows:
If with ρmaxWhen corresponding translation direction is left
If with ρmaxWhen corresponding translation direction is right
Or
Bwyl is obtained when bwy is translated to the left or to the rightjOr bwyrjWhen
If ρ0, ρ b1..., ρ bk, ρ b'1..., ρ b'kMiddle maximum value ρmaxFor ρ0, then
Bw (i)=[bwx (i)+bwy (i)]/2 1≤i≤N
Otherwise, it calculates as follows:
If with ρmaxWhen corresponding translation direction is left
If with ρmaxWhen corresponding translation direction is right
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other any without departing from Spirit Essence of the invention
With changes, modifications, substitutions, combinations, simplifications made under principle, equivalent substitute mode should be, be included in of the invention
Within protection scope.
Claims (1)
1. a kind of paper horizontal quantification shuttle-scanning data numeral in line method, which is characterized in that in paper cross basis weight control, lead to
Inspection amount scanning sensor is crossed along paper transverse reciprocating scanning process, calculates and runs from transmission side to fore side and from operation
Side runs the related coefficient between the quantitative scanning data obtained respectively to transmission side, to obtain Substance shuttle-scanning
The contraposition information of data simultaneously carries out data numeral in line；
Specifically includes the following steps:
Step 1: scanning sensor is primary along the operation of paper transverse reciprocating, obtains and runs from transmission side to fore side and from operation
Side runs the quantitative scanning data got respectively to transmission side, and is recorded as N-dimensional array bwx, array bwy respectively, wherein N
It is non-zero positive integer, expression runs to fore side from transmission side or runs from fore side to the quantitative scanning data point of transmission side
Number, the element in array bwx, array bwy are expressed as bwx (i) and bwy (i), and wherein i is non-zero positive integer, i:1,
2,...,N；
Step 2: calculating to run from transmission side to fore side and running from fore side to what transmission side was got respectively and quantify
Correlation coefficient ρ between scan data, and result is recorded as ρ0；
Step 3: determine that maximal translation amount k, k are non-zero positive integer, and k is less than N, and bwx is successively translated to j unit to the left,
In, j is non-zero positive integer, and j:1,2 ..., k are amounted to left h times, wherein h is non-zero positive integer, and h is equal to k, and remembers
It records to the obtained h array bwxl of leftj, then bwx is successively translated to the right to j unit, amounted to right translation h times,
And it records to the obtained h array bwxr of right translationj, it is specific as follows:
When to left,
When to right translation,
Step 4: calculating bwxljRelated coefficient between bwy, is denoted as ρ respectively1..., ρk, calculate bwxrjPhase between bwy
Relationship number, is denoted as ρ ' respectively1..., ρ 'k, compare ρ0, ρ1..., ρk, ρ '1..., ρ 'kSize, record maximum value therein
For ρmaxIf maximum value is ρ0, then correct array is aligned using bwx as with bwy, otherwise, record and ρmaxCorresponding j value is
jρmaxAnd corresponding translation direction, and if ρmaxCorresponding translation direction is a left side, then with arrayAs
Correct array is aligned with bwy, and if ρmaxCorresponding translation direction is the right side, then with arrayIt is aligned as with bwy
Correct array；
Calculate bwxlj、bwxrjThe formula of related coefficient between bwy are as follows:
When to left,
When to right translation,
Step 5: indicating that scanning sensor runs primary finally obtained quantitative scanning number along paper transverse reciprocating with N-dimensional array bw
According to, and calculate bw；
The method for calculating bw are as follows:
If maximum value is ρ in step 40, then
Bw (i)=[bwx (i)+bwy (i)]/2 1≤i≤N
Otherwise, it calculates as follows:
If with ρmaxWhen corresponding translation direction is left
If with ρmaxWhen corresponding translation direction is right
Alternatively, specifically includes the following steps:
Step 1: scanning sensor is primary along the operation of paper transverse reciprocating, obtains and runs from transmission side to fore side and from operation
Side runs the quantitative scanning data got respectively to transmission side, and is recorded as N-dimensional array bwx, array bwy respectively, wherein N
It is non-zero positive integer, expression runs to fore side from transmission side or runs from fore side to the quantitative scanning data point of transmission side
Number, the element in array bwx, array bwy are expressed as bwx (i) and bwy (i), and wherein i is non-zero positive integer, i:1,
2,...,N；
Step 2: calculating to run from transmission side to fore side and running from fore side to what transmission side was got respectively and quantify
Correlation coefficient ρ between scan data, and result is recorded as ρ0；
Step 3: determining that maximal translation amount k, k are non-zero positive integer, bwy is successively translated into j unit to left or right, wherein j is
Non-zero positive integer, j:1,2 ..., k are amounted to left h times, wherein h is non-zero positive integer, and h is equal to k, and records to the left
Translate obtained h array bwylj, then bwy is successively translated to the right to j unit, amounted to right translation h times, and record
To the obtained h array bwyr of right translationj, it is specific as follows:
When to left,
When to right translation,
Step 4: calculating bwyljRelated coefficient between bwx is denoted as ρ b respectively1..., ρ bk, calculate bwyrjBetween bwx
Related coefficient is denoted as ρ b ' respectively1..., ρ b'k, compare ρ0, ρ b1..., ρ bk, ρ b '1..., ρ b'kSize, record wherein
Maximum value be ρmaxIf maximum value is ρ0, then correct array is aligned using bwy as with bwx, otherwise, record and ρmaxRelatively
The j value answered is jρmaxAnd corresponding translation direction, and if ρmaxCorresponding translation direction is a left side, then with arrayCorrect array is aligned as with bwx, and if ρmaxCorresponding translation direction is the right side, then with arrayMake
To align correct array with bwx；
Calculate bwylj、bwyrjThe formula of related coefficient between bwx are as follows:
When to left,
When to right translation,
Step 5: indicating that scanning sensor runs primary finally obtained quantitative scanning number along paper transverse reciprocating with N-dimensional array bw
According to, and calculate bw；
The method for calculating bw are as follows:
If maximum value is ρ in step 40, then
Bw (i)=[bwx (i)+bwy (i)]/2 1≤i≤N
Otherwise, it calculates as follows:
If with ρmaxWhen corresponding translation direction is left
If with ρmaxWhen corresponding translation direction is right
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| CN201933356U (en) * | 2010-12-16 | 2011-08-17 | 绵阳同成高科技股份有限公司 | Quantitative dilution water intelligent control device for paper banners |
| CN102517962A (en) * | 2012-01-06 | 2012-06-27 | 维达纸业(孝感)有限公司 | Horizontal scroll quantifying extreme difference control method for base paper of paper machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201933356U (en) * | 2010-12-16 | 2011-08-17 | 绵阳同成高科技股份有限公司 | Quantitative dilution water intelligent control device for paper banners |
| CN102517962A (en) * | 2012-01-06 | 2012-06-27 | 维达纸业(孝感)有限公司 | Horizontal scroll quantifying extreme difference control method for base paper of paper machine |
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| 稀释水水力式流浆箱控制系统研究;陈航;《中国优秀硕士学位论文全文数据库 工程科技I辑》;20141115(第11期);论文第3章 |
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