CN108568454B - Rolling control device and control method for rolling - Google Patents
Rolling control device and control method for rolling Download PDFInfo
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- CN108568454B CN108568454B CN201810103205.0A CN201810103205A CN108568454B CN 108568454 B CN108568454 B CN 108568454B CN 201810103205 A CN201810103205 A CN 201810103205A CN 108568454 B CN108568454 B CN 108568454B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/66—Roll eccentricity compensation systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/02—Roll dimensions
- B21B2267/08—Roll eccentricity
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- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The present invention provides rolling control device and control method for rolling, detects the radio-frequency component of roll eccentricities amount accurately to reduce thickness deviation caused by roll eccentricities.Rolling control device (100) has: the roll eccentricities amount calculation part (13) that the variation based on rolling loads suffered by rolled material (1) calculates the roll eccentricities amount of load modes；The roll eccentricities amount calculation part (14) calculated based on roll eccentricities amount of the outlet side thickness deviation of rolled material to plate thickness mode；The roll eccentricities amount study portion (22) of roll eccentricities amount obtained by the roll eccentricities amount of above-mentioned calculated load modes is added by study in the scheduled rotation angle of each of back-up roll (2,3) with the roll eccentricities amount of plate thickness mode when being turned around back-up roll rotation；And using above-mentioned study to roll eccentricities amount as roll eccentricity control instruct to depressing position control device (8) export roll eccentricity control output section (40).
Description
Technical field
The present invention relates to the rolling control device for being suitable for the strip thickness control in view of roll eccentricities and roll control sides
Method.
Background technique
In the strip thickness control of roll mill, the eccentric of back-up roll generates thickness deviation, to become problem.In general, being
The eccentric influence that thickness deviation is generated for reducing back-up roll, using according to the variations of rolling loads or roll mill output
The thickness deviation of side learns roll eccentricities ingredient to carry out the roll eccentricity control of the depressing position of controlled rolling machine.
However, the signal of rolling loads variation, thickness deviation includes in addition to influencing caused by roll eccentricities mostly
Ingredient.Therefore, in roll eccentricity control, generally accordingly learn with upper and lower roller rotational angle or accumulative eccentricity simultaneously
Roll eccentricities ingredient is extracted, or calculates roll eccentricities ingredient by Fourier transform.
Also, in order to reduce influence of the roll eccentricities to thickness deviation, learning coefficient, control gain are set to compared with
Make the consistent control of the amount of change of actual roll eccentricities and depressing position greatly.Generally, plate thickness caused by roll eccentricities
Changing includes 1 times of rotation of upper and lower back-up roll to N overtones band ingredient, and the period of roll eccentricities according to mill speed and
Variation.Therefore, the case where producing close to disturbing factors such as the tension changes of the speed of roll or its N overtones band
Under, it is formed about resonance system in its frequency, so that the thickness deviation of roll mill outlet side is deteriorated.In addition, roll mill outlet side
Thickness deviation signal be easy that the thickness deviation by roll mill input side, the hardness of rolled material is uneven, roll mill input side
And the influence of the tension of outlet side, so that the interference other than roll eccentricities is also more.Therefore, in order to inhibit resonance, interference institute
The influence of generation needs only to detect the structure of roll eccentricities ingredient.
For example, Patent Document 1 discloses following technologies: accurately extracting two up and down by Fourier transform
The eccentric ingredient of back-up roll, so that thickness deviation caused by roll eccentricities be removed.Also, it discloses in patent document 2
Following technology: to calculated according to roll seam and rolling loads measuring instrument thickness deviation with by the outlet side of roll mill
The thickness deviation that plate thickness meter detects is compared, and using the difference as roll eccentricity signal, and is examined by Fourier transform
Survey roll eccentricities ingredient.
Existing technical literature
Patent document 1: Japanese Unexamined Patent Publication 2006-272446 bulletin
Patent document 2: International Publication No. 2009/136435
However, in technology disclosed in patent document 1, due tos the phase deviation etc. that can not will be exported by roll eccentricity control
Caused resonance, the influence interfered remove.Therefore, can will frequency identical with the respective speed of upper and lower back-up roll with
And 2 times or so plate thickness variance components below remove, but can not change the plate thickness of 3 times or more higher frequencies of speed
Ingredient removes.Therefore, it is impossible to by the radio-frequency component in the variance components of thickness deviation caused by roll eccentricities, (support is rolled up and down
Multiple frequence rate ingredient of the speed of roller etc.) it removes.
Technology disclosed Patent Document 2 is theoretically able to carry out the detection of correct roll eccentricities amount, but in reality
In especially mill speed be high speed in the case where, have the problem of can not accurately detecting roll eccentricities amount.The pressure of reality
Position control is made of dedicated hardware, thus is inputted and depressed from depressing position control device to roll eccentricity control device
The renewal time of depressing position data when the actual value of position generates restriction.Therefore, in the case where mill speed is high speed,
If generating the update delay of depressing position data, measuring instrument plate thickness can not be correctly calculated, so that generating can not be accurately
The problem of detecting roll eccentricities amount.
Summary of the invention
The purpose of the present invention is to provide radio-frequency component (the back-up roll rotations that can accurately detect roll eccentricities amount
The multiple frequence rate ingredient of frequency) so as to reducing rolling control device and the rolling of thickness deviation caused by roll eccentricities
Control method.
Rolling control device of the invention is the rolling control device controlled roll mill, and the rolling equipment is standby to be rolled
Roll processed simultaneously rolls rolled material, and the rolling control device is characterized in that having: first roll eccentricity calculates
Portion, the variation based on the rolling loads that above-mentioned rolled material receives from the rolling roll, to the of the rolling roll
One roll eccentricities amount is calculated；Second roll eccentricity calculation part, the slave the rolling machine based on above-mentioned rolled material are defeated
The thickness deviation of side out calculates the second roll eccentricity of the rolling roll；Roll eccentricities amount study portion,
When enclosing the rolling roller rotational one, study will be by above-mentioned first in the scheduled rotation angle of each of the rolling roll
Roll eccentricities amount calculation part and above-mentioned second roll eccentricity calculation part distinguish calculated above-mentioned first roll eccentricity and upper
State roll eccentricities amount obtained from second roll eccentricity is added；And roll eccentricity control output section, it will be by above-mentioned roll
The roll eccentricities amount that eccentricity study portion is learnt exports the pressure position controlled to the depressing position to the rolling roll
Set control device.
The effect of invention is as follows.
According to the present invention, provide can accurately detect the multiple frequence rate ingredient of back-up roll speed roll it is inclined
Heart amount is so as to reducing the rolling control device and control method for rolling of thickness deviation caused by roll eccentricities.
Detailed description of the invention
Fig. 1 is the example for showing the roll eccentricity control structure in the rolling control device of first embodiment of the invention
And the figure of the example of the structure of the roll mill as its control object.
(a) of Fig. 2 is the example for showing the rolling loads variation Δ P and thickness deviation Δ h generated by roll eccentricities
Figure, be (b) that the figure of the example of calculated value of roll eccentricities amount is shown, and be (c) detected value for showing roll eccentricities amount
The figure of example.
(a) of Fig. 3 is the rolling loads variation Δ P and thickness deviation generated due to showing the interference other than roll eccentricities
The figure of the example of Δ h is (b) to show the figure of the example of calculated value of roll eccentricities amount, and (c) show roll eccentricities amount
The figure of the example of detected value.
Fig. 4 is the detailed construction for showing the roll eccentricities amount study portion learnt to the roll eccentricities amount of back-up roll
The figure of example.
Fig. 5 is the example for showing the roll eccentricity control structure in the rolling control device of second embodiment of the present invention
And the figure of the example of the structure of the roll mill as its control object.
In figure:
1-rolled material, 2,3-back-up rolls, 4,5-central rolls, 6,7-work rolls, the control of 8-depressing positions
Device, 9-rolling loads detectors, 10-outlet side plate thickness detectors, 11,12-back-up roll rotation detectors, 13-carry
The roll eccentricities amount calculation part (first roll eccentricity calculation part) of lotus mode, the roll eccentricities amount calculation part of 14-plate thickness modes
(second roll eccentricity calculation part), 15-input side plate thickness detectors, 16-strip thickness control portions, 20,21,30,31-rolls
Eccentricity transmission process portion, 22,32-roll eccentricities amount study portions, 23,33-roll eccentricities amount learning tables, 24-topping rolls are inclined
Heart control output operational part, 34-bottom roll eccentricity controls output operational part, 221-roll eccentricities amount Screening Treatment portions, 222-
The roll eccentricities amount learning value calculation part of load modes, the roll eccentricities amount learning value calculation part of 223-plate thickness modes, 224-
Roll eccentricities amount learning value calculation part, 225-roll eccentricities amounts study tabular value calculation part, 40-roll eccentricity control output sections,
100,100a-rolling control device, 150-roll mills, Δ P-rolling loads variation (variation of rolling loads), Δ
H-outlet side thickness deviation (plate thickness variation), Δ H-input side thickness deviation, Δ SREC2The roll of (Δ P)-load modes is inclined
Heart amount (first roll eccentricity), Δ SREC(Δ h)-plate thickness mode roll eccentricities amount (second roll eccentricity), SRECTOP—
Upper back-up roll eccentricity, SRECBOT- lower back-up roll eccentricity, SRECThe instruction of-roll eccentricity control, Δ SAGC- come from plate
The depressing position of thick control unit instructs, Δ PAGC- the rolling generated according to the depressing position instruction from strip thickness control portion carries
The variable quantity of lotus.
Specific embodiment
Hereinafter, referring to attached drawing, detailed description of embodiments of the present invention.In addition, in each attached drawing, to common structure
Same symbol is marked at important document, and the repetitive description thereof will be omitted.
" first embodiment "
Fig. 1 is the roll eccentricity control structure shown in the rolling control device 100 of first embodiment of the invention
The figure of the example of the structure of example and the roll mill 150 as its control object.As shown in Figure 1, being rolled to rolled material 1
The roll mill 150 of system is configured to have six layers be made of back-up roll 2,3, central roll 4,5, work roll 6,7 and rolls
Roller.In addition, being attached to depressing position control device 8, rolling loads detector 9, outlet side plate thickness detector in roll mill 150
10 and back-up roll rotation detector 11,12 etc..
Herein, depressing position control device 8 controls the depressing position of work roll 7 and gap for target position.And
And the rolling loads detector 9 for being set to the top of back-up roll 2 detects the rolling loads for rolled material 1, it is defeated
The plate thickness of rolled material 1 after 10 pairs of side panel thickness detector rollings is measured.Also, back-up roll rotation detector 11,
12 respectively detect the rotation angle of back-up roll 2,3.
In addition, the detection of the rotation angle of back-up roll 2,3 is not limited to using back-up roll rotation detector 11,12
Method.Also it can be detected based on the rotation detector by driving work roll 6,7 or the motor of central roll 4,5
The diameter ratio of the diameter and back-up roll 2 of rotation angle and work roll 6,7 or central roll 4,5 rotates to solve
Angle.Alternatively, it is also possible to be arranged the rotation to back-up roll 2,3 turn around or rotate 1/2 circle situations such as the sensing that is detected
Device, to improve the detection accuracy of each rotation angle.
Rolling control device 100 is configured to include roll eccentricities amount calculation part 13,14, roll eccentricities amount transmission process portion
20,21,30,31, roll eccentricities amount study portion 22,32, roll eccentricity control output operational part 24,34 and roll eccentricities control
The function blocks such as output section 40 processed.In addition, rolling control device 100 is configured to include roll eccentricities amount learning table 23,33 etc.
Storage functional block.
Which herein, according to using in rolling loads variation and thickness deviation to calculate roll eccentricities amount, come
Two roll eccentricities amount calculation parts 13,14 are divided into load modes or plate thickness mode.On the other hand, according to study top
Back-up roll 2, lower section back-up roll 3 in which side roll eccentricities amount, come distinguish two roll eccentricities amount study portions 22,
32.Also, according to in rolling loads variation, thickness deviation, the back-up roll 2 of top and the back-up roll 3 of lower section which
The roll eccentricities amount of one side carries out transmission process to distinguish four roll eccentricities amount transmission process portions 20,21,30,31.
In addition, having the rolling control device 100 of above such structure by the number including general computer
Control circuit is constituted.In this case, the function of constituting the above-mentioned function treatment block of rolling control device 100 passes through by calculating
The arithmetic processing apparatus execution of machine is stored in the scheduled program of the storage devices such as main memory to realize.Also, roll eccentricities
The storage functional blocks such as amount learning table 23,33 are constituted in the storage device of the computer.
Hereinafter, the function for each function treatment block for constituting rolling control device 100 is described in detail.
< roll eccentricities amount calculation part 13,14 >
The roll eccentricities amount calculation part 13 of load modes is counted according to the rolling loads detected by rolling loads detector 9
Rolling loads variation Δ P is calculated, and based on rolling loads variation Δ P come the roll eccentricities amount Δ S of assumed (specified) load modeREC
(ΔP)。
Herein, it is rolled by subtracting scheduled a reference value from the rolling loads detected by rolling loads detector 9 to solve
Load variations amount Δ P processed.Herein, scheduled a reference value, which refers to, for example revolves the phase turned around in back-up roll 2 or back-up roll 3
Between the average value of rolling loads that is detected by rolling loads detector 9.Alternatively, the scheduled a reference value can be with determining
The rolling loads that rotation angle detects, are also possible to the rolling loads value suitably set in advance as a reference value.
The roll eccentricities amount calculation part 13 of load modes is according to formula below (1) come the roll eccentricities amount of assumed (specified) load mode
ΔSREC(ΔP).But in this case, roll mill 150 is not at rolled material 1 is rolled during, but
The state that work roll 6,7 is simply contacted with rolled material 1.
(formula 1)
Wherein, M: the spring constant (N/m) of roll mill
The roll eccentricities amount calculation part 14 of plate thickness mode is according to formula below (2) and based on by outlet side plate thickness detector 10
The thickness deviation Δ h of the rolled material 1 detected calculates the roll eccentricities amount Δ S of plate thickness modeREC(Δh)。
(formula 2)
Wherein, M: the spring constant (N/m) of roll mill
Q: the plastic coefficient (N/m) of rolled material
Herein, if assuming, the thickness deviation Δ h of roll mill outlet side is not the influence because of roll eccentricities but because rolled
The hardness of material 1 is uneven, other interference and generate, then the thickness deviation of its rolling loads variation Δ P and roll mill outlet side
Δ h is accordingly generated.In this case, it is deposited between the thickness deviation Δ h of roll mill outlet side and rolling loads variation Δ P
In the relationship indicated by formula below (3).
(formula 3)
Therefore, the roll eccentricities amount calculation part 13 of load modes is calculated according to formula below (4) in the operation of rolling
It is rolled the roll eccentricities amount Δ S of the load modes in the case that material 1 is applied with rolling loads variation Δ PREC2(ΔP)。
(formula 4)
Therefore, the roll eccentricities amount Δ S of load modes can be solved according to formula below (5)REC2(Δ P) and plate thickness mould
The roll eccentricities amount Δ S of formulaREC(total Δ S of Δ h)REC(Δ h, Δ P).
(formula 5)
Formula (5) refers to the roll eccentricities amount Δ S of the load modes based on rolling loads variation Δ PREC2(Δ P) be based on
The roll eccentricities amount Δ S of the plate thickness mode of thickness deviation Δ hREC(Δ h) cancels out each other and becomes zero.In other words, formula (5) refers to
The roll eccentricities amount after influencing caused by the interference other than roll eccentricities can will be only eliminated to extract.Using Fig. 2 and Fig. 3 into
One step is illustrated such situation.
(a) of Fig. 2 is the example for showing the rolling loads variation Δ P and thickness deviation Δ h generated by roll eccentricities
Figure, be (b) that the figure of the example of calculated value of roll eccentricities amount is shown, and be (c) detected value for showing roll eccentricities amount
The figure of example.As shown in (a) of Fig. 2, if rolling loads variation Δ P is vibrated to positive side due to roll eccentricities, thickness deviation
Δ h is vibrated to negative side.Also, if rolling loads variation Δ P is vibrated to negative side, and thickness deviation Δ h is vibrated to positive side.That is,
Rolling loads variation Δ P and the mutual phasing back of thickness deviation Δ h
As a result, the roll eccentricities amount Δ S of calculated load modes according to formula (4)REC2(Δ P) and according to formula (2)
And the roll eccentricities amount Δ S of calculated plate thickness modeREC(Δ h) such as becomes phase same to each other shown in (b) of Fig. 2.Cause
This, by Δ S shown in (c) of the detected value of roll eccentricities amount such as Fig. 2REC2(Δ P) and Δ SREC(Δ h) is total to be formed.
(a) of Fig. 3 is the rolling loads variation Δ P and thickness deviation generated due to showing the interference other than roll eccentricities
The figure of the example of Δ h is (b) to show the figure of the example of calculated value of roll eccentricities amount, and (c) show roll eccentricities amount
The figure of the example of detected value.In the case where the interference other than roll eccentricities, rolling loads variation Δ P is mainly because of thickness deviation
Δ h and generate, to become mutually mutual shown in (a) of the phase of load variations Δ P and phase such as Fig. 3 of thickness deviation Δ h
Same phase.
As a result, the roll eccentricities amount Δ S of calculated load modes according to formula (4)REC2(Δ P) and plate thickness mode
Roll eccentricities amount Δ SREC(Δ h) such as becomes mutually opposite phase shown in (b) of Fig. 3.Therefore, the detection of roll eccentricities amount
Value becomes zero as shown in (c) of Fig. 3 by being added them.
20,21,30,31 > of < roll eccentricities amount transmission process portion
However, can be detected by 9 non-time delay of rolling loads detector for rolling loads variation Δ P
Roll mill just under value.On the other hand, inclined to plate thickness by being disposed far from the outlet side plate thickness detector 10 of the position of roll mill 150
Poor Δ h is detected, to generate the unnecessary time.Therefore, it in the case where formula (2), formula (4) for computationally stating etc., needs
To make the phase one of rolling loads variation Δ P Yu thickness deviation Δ h on the basis of the respective rotation angle of back-up roll 2,3
It causes.
In the present embodiment, the roll eccentricities amount transmission process portion 20 of load modes has rotates to back-up roll 2
The roll eccentricities amount Δ S of the corresponding load modes of one circleREC2The first tracking table (illustration omitted) that (Δ P) is stored.
Moreover, the roll eccentricities amount transmission process portion 20 of load modes is via back-up roll rotation detector 11 and to support
The rotation angle of roll 2 is detected, and via roll eccentricities amount calculation part 13 and to the roll eccentricities amount Δ of load modes
SREC2(Δ P) is calculated.Moreover, making the roll eccentricities amount Δ S of the calculated load modesREC2(Δ P) is detected with above-mentioned
Rotation angle be accordingly stored in above-mentioned first tracking table.In this way, being stored with the rotation angle example of back-up roll 2 in the first tracking table
Such as 360 degree of the roll eccentricities amount Δ S per load modes onceREC2(ΔP)。
The roll eccentricities amount transmission process portion 21 of plate thickness mode have the second of structure identical with the first tracking table with
Track table (illustration omitted).Every plate thickness mould once of such as 360 degree of rotation angle of back-up roll 2 is stored in second tracking table
The roll eccentricities amount Δ S of formulaREC(Δh)。
In addition, the roll eccentricities amount transmission process portion 21 of plate thickness mode solves back-up roll 2 in rolled material 1 from roll mill
The rotation angle rotated during the position for being just moved to outlet side plate thickness detector 10 down.Moreover, the rotation angle that this is solved
Roll eccentricities amount Δ S as load modesREC2The roll eccentricities amount Δ S of (Δ P) and plate thickness modeREC(the phase difference of Δ h).
For revolving the data before turning around accordingly, for back-up roll 2, the roll eccentricities amount Δ S of plate thickness mode can be madeREC(Δ h) with
In the roll eccentricities amount Δ S for the load modes that roll mill is just solving downREC2(Δ P) is consistent in identical phase.
The roll eccentricities amount transmission process portion 30 of load modes, which has, revolves rolling for the load modes to turn around to back-up roll 3
Roller eccentricity Δ SREC2The third tracking table (illustration omitted) that (Δ P) is stored.Also, the roll eccentricities amount of plate thickness mode passes
Defeated processing unit 31 also has the roll eccentricities amount Δ S that the load modes to turn around are revolved to back-up roll 3REC(Δ h) is stored
4th tracking table (illustration omitted).
Moreover, same as described above, for the data that back-up roll 3 revolves before turning around, be stored in above-mentioned third and
The roll eccentricities amount Δ S of the plate thickness mode of 4th tracking tableREC(the roll eccentricities amount Δ S of Δ h) and load modesREC2(Δ P's)
Phase is consistent.
As described above, to roll eccentricities amount study portion 22, the consistent back-up roll 2 of 32 output phases, 3 respective plate thickness moulds
The roll eccentricities amount Δ S of formulaREC(the roll eccentricities amount Δ S of Δ h) and load modesREC2(ΔP)。
< roll eccentricities amount study portion 22,32 >
Fig. 4 is the detailed knot for showing the roll eccentricities amount study portion 22 learnt to the roll eccentricities amount of back-up roll 2
The figure of the example of structure.In addition, the roll eccentricities amount study portion 32 of the roll eccentricities amount of back-up roll 3 is also identical structure, from
And only the roll eccentricities amount study portion 22 of the roll eccentricities amount of back-up roll 2 is illustrated below.
The roll eccentricities study to being learnt by roll eccentricities amount study portion 22 is attached in roll eccentricities amount study portion 22
The roll eccentricities amount learning table 23 that value is stored.Roll eccentricities amount study portion 22 is based on from roll eccentricities amount transmission process portion
20, the 21 roll eccentricities amount Δ S respectively obtainedREC2(ΔP)、ΔSRECIt (Δ h) and is obtained from roll eccentricities amount learning table 23
Previous roll eccentricities learning value, to calculate new roll eccentricities learning value.
That is, as shown in figure 4, the roll eccentricities amount learning value calculation part 222 of load modes is by the roll eccentricities of load modes
Measure Δ SREC2(Δ P) is multiplied by learning gains G1P, to obtain the roll eccentricities learning value of load modes.Also, plate thickness mode
Roll eccentricities amount learning value calculation part 223 is by the roll eccentricities amount Δ S of plate thickness modeREC(Δ h) is multiplied by learning gains G1h, thus
Obtain the roll eccentricities learning value of plate thickness mode.
Roll eccentricities amount Screening Treatment portion 221 is in the roll eccentricities learning value for being stored in roll eccentricities amount learning table 23 and together
Scheduled weighting is solved between the roll eccentricities learning value that the rotation angle of the front and back of the roll eccentricities learning value accordingly stores to move
Dynamic average value.Moreover, roll eccentricities amount learning value calculation part 224 adds what is solved by roll eccentricities amount Screening Treatment portion 221
Moving average is weighed multiplied by scheduled learning coefficient G2, to obtain previous roll eccentricities amount learning value.
Roll eccentricities amount learns tabular value calculation part 225 will be calculated by roll eccentricities amount learning value calculation part 222,223
Load modes, the roll eccentricities amount learning value of plate thickness mode and calculated previous by roll eccentricities amount learning value calculation part 224
Roll eccentricities amount learning value be added, to calculate this roll eccentricities amount learning value.In addition, roll eccentricities amount learns tabular value
Calculation part 225 updates roll eccentricities amount learning table 23 according to this above-mentioned calculated roll eccentricities amount learning value.
Therefore, for the content of above roll eccentricities amount learning table 23, whenever back-up roll 2 revolves the phase turned around
Between, update once roll eccentricities amount learning value corresponding with angle rotation angle.
Signal of the roll eccentricities amount study portion 22 of Fig. 4 as the speed and its N overtones band for extracting back-up roll 2
Digital filter function.At this point, learning gains G1P、G1h、G2It is the digital filter for learning roll eccentricities amount
Parameter, the control gain K of the roll eccentricity control system of the digital filterPIt is indicated by formula below (6).
(formula 6)
Herein, if change learning gains G1P、G1h、G2Value, then characteristic variations of the digital filter.For example, if being set as
G1P=0.1, G1h=0.1, G2=0.9, then KP=2, it is controlled to become the ratio that gain is 2 times.In G1P=0.1, G1h=
0.1、G2In the case where=0.99, KP=20, it is controlled to become the ratio that gain is 20 times.At this point, the influence institute of roll eccentricities
The residual thickness deviation of generation is 1/ (KP+ 1)=1/21, be theoretically able to suppress is 5% or less.If also, being set as G2=
1.0 become integration control, and theoretically thickness deviation caused by the influence of roll eccentricities is zero.If G2It is spread more than 1.0.
Further, since the eccentricity of back-up roll 2 changes during the rolling process, it is possible to consider that roll eccentricities amount learns
Table 23 with forgetting coefficient by learning gains G2The value being set as between 0.9~1.0.
< roll eccentricity control exports operational part 24,34,40 > of roll eccentricity control output section
The roll eccentricity control output operational part 24 of back-up roll 2 considers the ground such as the propagation delay of data, from back-up roll 2
Roll eccentricities amount learning table 23 read with roll mill just under the corresponding roll eccentricities amount learning value of slightly forward rotation angle.
Also, using the roll eccentricities amount learning value read out as the roll eccentricities amount S of back-up roll 2RECTOPTo roll eccentricity control
Output section 40 exports.
Equally, the roll eccentricity control output operational part 34 of back-up roll 3 considers the ground such as the propagation delay of data, from support
The roll eccentricities amount learning table 33 of roll 3 read with roll mill just under the corresponding roll eccentricities amount of slightly forward rotation angle
Habit value.Moreover, using the roll eccentricities amount learning value read out as the roll eccentricities amount S of back-up roll 3RECBOTIt is inclined to roll
The heart controls output section 40 and exports.
Roll eccentricity control output section 40 is by the roll eccentricities amount S of back-up roll 2RECTOPWith the roll eccentricities of back-up roll 3
Measure SRECBOTIt is added, and instructs S for the addition value as roll eccentricity controlRECIt is exported to depressing position control device 8.At this point,
Depressing position control device 8 is based on roll eccentricity control and instructs SREC, depressing position is changed, to offset rolling for back-up roll 2,3
The influence of roller bias.
The effect > of < present embodiment
More than, in the present embodiment, roll eccentricities amount study portion 22,32 is by the roll eccentricities amount Δ S of load modesREC2
The roll eccentricities amount Δ S of (Δ P) and plate thickness modeREC(Δ h) is added, on this basis, whenever back-up roll 2,3 rotates one
Study processing is carried out when circle.Moreover, study processing has filter function, in the scheduled rotation of each of back-up roll 2,3
Angle (such as per once) obtains its processing result.Therefore, in the rolling control device of present embodiment 100, branch can be extracted
Support more times of (N times) roll eccentricities amounts of the speed of roll 2,3.
Also, the rolling control device 100 of present embodiment can extract back-up roll 2,3 respectively removes various do
Roll eccentricities amount S after the influence disturbedRECTOP、SRECBOT.Therefore, rolling control device 100 passes through to depressing position control device 8
Instruction and roll eccentricities amount SRECTOP、SRECBOTCorresponding roll eccentricity control instructs SREC, the shadow of roll eccentricities amount can be eliminated
It rings.Thus, in the present embodiment, plate thickness caused by roll eccentricities can accurately be inhibited to change.
" second embodiment "
Fig. 5 is the roll eccentricity control structure shown in the rolling control device 100a of second embodiment of the present invention
The figure of the example of the structure of example and the roll mill 150a as its control object.It is filled in the roll control of first embodiment
It sets in 100 (referring to Fig.1), influence of the strip thickness control to roll eccentricity control is not considered, but in this second embodiment, to consideration
Example to the roll eccentricity control system of the influence of strip thickness control is illustrated.In addition, strip thickness control recited herein is
The plate thickness changed due to for by interference other than roll eccentricities remains constant control.
As shown in figure 5, the structure of the rolling control device 100a of second embodiment is the rolling control device in Fig. 1
The structure in input side plate thickness detector 15 and strip thickness control portion 16 has been added in 100 structure.But it is also possible to omit input
Side plate thickness detector 15.
Strip thickness control portion 16 exports depressing position to depressing position control device 8 and instructs Δ SAGC, depressing position instruction Δ
SAGCMake according to the input side thickness deviation Δ H, defeated detected by input side plate thickness detector 15, outlet side plate thickness detector 10
The outlet side plate thickness for the roll mill 150a that side panel thickness deviation delta h is solved becomes desired plate thickness target value.Due to the pressure
Lower position command Δ SAGCIt is not related with roll eccentricities, so roll eccentricity control system the case where for first embodiment
It is interference for system.
Herein, if assuming, the outlet side plate thickness of roll mill 150a is constant, because of the depressing position from strip thickness control portion 16
Instruct Δ SAGCAnd the variation delta P of the rolling loads generatedAGCIt is calculated by formula below (7).
(formula 7)
ΔPAGC=-M Δ SAGC (7)
Therefore, if to instruct Δ S because of depressing positionAGCAnd the variation delta P of the rolling loads generatedAGCTo roll eccentricities control
Load variations Δ P used in makingRECIt is modified, then can exclude the influence of strip thickness control.That is, roll eccentricity control is made
Load variations Δ PRECIt can be calculated by formula below (8).
(formula 8)
ΔPREC=Δ P- Δ PAGC=Δ P+M Δ SAGC (8)
Therefore, in the present embodiment, it is able to use the load variations Δ P of the roll eccentricity control of formula (8)RECCome real
The identical roll eccentricity control of the case where granting first embodiment.Thus, it can also obtain in the present embodiment and first
The identical effect of embodiment.
In addition, further including various modifications example the present invention is not limited to embodiments described above and variation.Example
Such as, above-mentioned embodiment and variation be for easy understanding the present invention and be described in detail, being not limited to must
Need to have illustrated all structures.Further, it is possible to which a part of certain embodiment, the structure of variation is replaced into other realities
Mode, the structure of variation are applied, and can also add other embodiment in certain embodiment, the structure of variation, become
The structure of shape example.Also, for a part of each embodiment, the structure of variation, can also add, delete, replace it is other
Structure included by embodiment, variation.
Claims (6)
1. a kind of rolling control device, controls roll mill, the rolling equipment for roller milling roller and to rolled material into
Row rolling, the rolling control device are characterized in that having:
First roll eccentricity calculation part, the variation based on the rolling loads that above-mentioned rolled material receives from the rolling roll
Amount, calculates the first roll eccentricity of the rolling roll；
Second roll eccentricity calculation part, the thickness deviation of the outlet side of the slave the rolling machine based on above-mentioned rolled material,
The second roll eccentricity of the rolling roll is calculated；
Roll eccentricities amount study portion learns when enclosing whenever the rolling roller rotational one in each of the rolling roll
Scheduled rotation angle will be calculated separately by above-mentioned first roll eccentricity calculation part and above-mentioned second roll eccentricity calculation part
Roll eccentricities amount obtained from above-mentioned first roll eccentricity out is added with above-mentioned second roll eccentricity；And
Roll eccentricity control output section exports the roll eccentricities amount learnt by above-mentioned roll eccentricities amount study portion to upper
State the depressing position control device that the depressing position of roller milling roller is controlled.
2. rolling control device according to claim 1, which is characterized in that
It is also equipped with roll eccentricities amount transmission process portion, which stores by above-mentioned first roll eccentricity
The calculated above-mentioned first roll eccentricity of calculation part with by above-mentioned second roll eccentricity calculation part calculated above-mentioned second
Roll eccentricities amount, and above-mentioned first roll eccentricity and above-mentioned second roll bias are exported to above-mentioned roll eccentricities amount study portion
Amount.
3. rolling control device according to claim 1, which is characterized in that
It is also equipped with strip thickness control portion, which is used for the output of above-mentioned depressing position control device by above-mentioned rolled material
Slave the rolling machine outlet side strip thickness control be preset target plate thickness depressing position control instruction,
Above-mentioned first roll eccentricity calculation part uses the above-mentioned depressing position control instruction exported by above-mentioned strip thickness control portion
The variable quantity of generated rolling loads, the variation of the rolling load used in the calculating to above-mentioned first roll eccentricity
Amount is modified.
4. a kind of control method for rolling is the control method for rolling of the rolling control device controlled roll mill, above-mentioned to roll
Equipment processed rolls for roller milling roller and to rolled material, and the rolling control method is characterized in that,
The rolling control device executes following steps:
First step, the variation based on the rolling loads that above-mentioned rolled material receives from the rolling roll, to the rolling
The first roll eccentricity of roll is calculated；
Second step, the thickness deviation of the outlet side of the slave the rolling machine based on above-mentioned rolled material, to the rolling roll
Second roll eccentricity calculated；
Third step learns when enclosing the rolling roller rotational one in the scheduled rotation angle of each of the rolling roll
Degree rolls the above-mentioned first roll eccentricity and above-mentioned second that calculate separately out by above-mentioned first step and above-mentioned second step
Roll eccentricities amount obtained from roller eccentricity is added；And
Four steps exports the roll eccentricities amount learnt in above-mentioned third step to the pressure position to the rolling roll
Set the depressing position control device controlled.
5. control method for rolling according to claim 4, which is characterized in that
The rolling control device also executes the 5th step,
In the 5th step, it is stored in the calculated above-mentioned first roll eccentricity of above-mentioned first step and in above-mentioned second step
Calculated above-mentioned second roll eccentricity in rapid, and deliver above-mentioned first to third step before executing above-mentioned third step and roll
Roller eccentricity and above-mentioned second roll eccentricity.
6. control method for rolling according to claim 4, which is characterized in that
The rolling control device executes the 6th step before executing above-mentioned first step, and in the 6th step, calculating is used for
It is the depressing position of preset target plate thickness by the strip thickness control of the outlet side of the slave the rolling machine of above-mentioned rolled material
Control instruction,
In above-mentioned first step, produced using by above-mentioned depressing position control instruction calculated in above-mentioned 6th step
The variable quantity of raw rolling loads, the variation of the rolling load used in the calculating to above-mentioned first roll eccentricity into
Row amendment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017044424A JP6707043B2 (en) | 2017-03-08 | 2017-03-08 | Rolling control device and rolling control method |
| JP2017-044424 | 2017-03-08 |
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| CN108568454A CN108568454A (en) | 2018-09-25 |
| CN108568454B true CN108568454B (en) | 2019-08-30 |
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| JP (1) | JP6707043B2 (en) |
| CN (1) | CN108568454B (en) |
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| CN115740037A (en) | 2019-08-28 | 2023-03-07 | 东芝三菱电机产业系统株式会社 | Roller state monitoring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293510A (en) * | 2000-04-12 | 2001-10-23 | Nkk Corp | Method for controlling flying thickness change in continuous hot-rolling mill |
| JP2005230905A (en) * | 2004-02-23 | 2005-09-02 | Jfe Steel Kk | Method for controlling length of special shaped steel sheet |
| CN101648217A (en) * | 2009-06-09 | 2010-02-17 | 中冶赛迪工程技术股份有限公司 | Eccentric compensation method based on rotation angle of roller and equipment thereof |
| CN103042042A (en) * | 2013-01-31 | 2013-04-17 | 燕山大学 | Eccentric compensation method of roller based on discrete auxiliary closed loop |
| CN203830418U (en) * | 2013-09-29 | 2014-09-17 | 上海梅山钢铁股份有限公司 | Supporting roller horizontal shift adjusting locking device of rolling mill |
-
2017
- 2017-03-08 JP JP2017044424A patent/JP6707043B2/en active Active
-
2018
- 2018-02-01 CN CN201810103205.0A patent/CN108568454B/en active Active
- 2018-02-01 DE DE102018201586.4A patent/DE102018201586A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293510A (en) * | 2000-04-12 | 2001-10-23 | Nkk Corp | Method for controlling flying thickness change in continuous hot-rolling mill |
| JP2005230905A (en) * | 2004-02-23 | 2005-09-02 | Jfe Steel Kk | Method for controlling length of special shaped steel sheet |
| CN101648217A (en) * | 2009-06-09 | 2010-02-17 | 中冶赛迪工程技术股份有限公司 | Eccentric compensation method based on rotation angle of roller and equipment thereof |
| CN103042042A (en) * | 2013-01-31 | 2013-04-17 | 燕山大学 | Eccentric compensation method of roller based on discrete auxiliary closed loop |
| CN203830418U (en) * | 2013-09-29 | 2014-09-17 | 上海梅山钢铁股份有限公司 | Supporting roller horizontal shift adjusting locking device of rolling mill |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018201586A1 (en) | 2018-09-13 |
| CN108568454A (en) | 2018-09-25 |
| JP2018144094A (en) | 2018-09-20 |
| JP6707043B2 (en) | 2020-06-10 |
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