CN102371279B - Adaptive control method for increasing thickness precision of finish-rolled band steel by utilizing roll gap - Google Patents

Adaptive control method for increasing thickness precision of finish-rolled band steel by utilizing roll gap Download PDF

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CN102371279B
CN102371279B CN 201010263591 CN201010263591A CN102371279B CN 102371279 B CN102371279 B CN 102371279B CN 201010263591 CN201010263591 CN 201010263591 CN 201010263591 A CN201010263591 A CN 201010263591A CN 102371279 B CN102371279 B CN 102371279B
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roll gap
thickness
rolling
value
strip steel
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CN102371279A (en
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张健民
李维刚
杜斌
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Abstract

The invention relates to the field of production and control of a finish-rolled band steel, in particular to a method for controlling a thickness of a finish-rolled band steel. An adaptive control method for increasing the thickness precision of a finish-rolled steel band by utilizing a roll gap is characterized in that the method comprises the following steps of establishing a roll gap modification quantity static table which performs indexing according to the layers of band steels; before rolling the band steels, identifying the layer of the current rolling band steel, determining the roll gap modification current value, summing the roll gap modification current value with the zero point modification current values of racks, obtaining a roll gap model learning coefficients of the racks used for rolling setting pre-calculation; after rolling the band steels, detecting the obtained band steel final rolling thickness value and the actual roll gap value of the rack at the finish-rolling end, calculating the values, obtaining the band steel final rolling thickness deviation, the initial roll gap deviation value and the roll gap modification update value, for example, when the layer of the same coil of band steel is different with that of the former coil of band steel, the roll gap modification update value is saved in the roll gap modification quantity static table; and collecting the roller speed, roll gap, rolling force and final rolling thickness actually measured data of each rack, and then performing zero point modification of the roll gap. According to the method provided by the invention, the roll gap modification value and zero point modification are used jointly, so that the adaptive capability of the roll gap model under the condition that the rolling planning specification is variable can be improved, thereby improving the setting precision of the model and realizing accurate control to the thickness of the band steel.

Description

Utilize the roll gap self adaptation to improve the control method of fine-rolling strip steel thickness and precision
Technical field
The present invention relates to fine-rolling strip steel production control field, relate in particular to a kind of method for controlling thickness of fine-rolling strip steel.
Background technology
In the fine-rolling strip steel production process, be the leading indicator of measuring quality to the control accuracy level of fine-rolling strip steel thickness, be directly connected to the economic benefit of iron and steel manufacturer.Along with the development of society, the thickness and precision of fine-rolling strip steel is required stricter, often need to reach ± 30 ~ ± level of 50um.
Realize high-precision fine-rolling strip steel THICKNESS CONTROL, need the perfect thickness control system of design.At first the factor of fine-rolling strip steel varied in thickness to be clearly affected, Counter-measures could be adopted.The factor of every influence of rolled pressure, roll gap etc., all will exert an influence to actual rolled piece exit thickness, the factor that affects the fine-rolling strip steel thickness and precision mainly contains the following aspects: the variation of the varied in thickness of supplied materials, the variation of material temperature, backing roll oil film, variation, thermal expansion of rollers and the wearing and tearing of tension force, roll and the impact of bearing bias, the impact of mill speed etc.As everyone knows, the thickness and precision of fine-rolling strip steel depends on sets the precision of calculating, so improve the thickness and precision of fine-rolling strip steel, must improve consist of the basic mathematic model of set-up function, as the resistance of deformation of material, temperature computation, roll-force is calculated, roll gap calculates precision.But the model that adopts in setting calculating is derived by engineering method mostly, and model accuracy can not be very high.In order to improve the precision of model, people adopt the method for self study usually, and by relatively rear calculated value and measured value, come the correction model parameter, thereby improve model accuracy, be the practical technique that now widely used fine-rolling strip steel thickness and precision is controlled.
In fine-rolling strip steel THICKNESS CONTROL setting model adaptive learning process, have following difficulty: 1, the intermediate stand belt steel thickness can not be surveyed, and only can measure the finish to gauge thickness with steel; 2, strip speed can not be surveyed, and only can measure the speed of roll; 3, the intermediate stand belt steel temperature can not be surveyed, and only can measure finishing temperature; 4, along with the appearance of free rolling demand, the plan layout free degree is large, and single roll gap model learning is difficult to solve with the thickness and precision problem in the changeable situation of steel specification.
Mainly contain at present following several fine-rolling strip steel Thickness Control Technology:
On March 24th, (1) 2004, disclosed application number was 02132974.5 application for a patent for invention prospectus, name is called " with the control method of steel finishing mill roll gap ", by the accurate calculating to finish rolling inlet temperature (being the temperature of intermediate blank head), solved use Coil Box batch the production process of intermediate blank in the low problem of process control model head hit rate, bring up to now 96% from original 72%, effectively controlled the precision of finishing mill roll gap and the width accuracy of hot rolled plate band.
On November 17th, (2) 2004, disclosed application number was 200310119005.8 application for a patent for invention prospectus, name is called " method of predicting steel plate thickness during rolling process ", comprise and calculate roll elastic deformation to the impact of mill spring, measure the strain of mill housing and associated mechanical components, calculate mill spring, predict the thickness of steel plate and eliminate the null offset of mill spring model to the steps such as impact of thickness prediction, can improve the thickness and precision of steel plate.
There are the following problems for above-mentioned prior art: technology (1) only improves the belt steel thickness precision by improving finish rolling inlet temperature precision; Technology (2) improves thickness and precision by the elimination model null offset of bouncing to the impact of thickness prediction.Even used simultaneously above technology, large in the belt steel temperature fluctuation, under rolling scaduled specification of while was jumped large situation, the belt steel thickness precision still had bad trend.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision, change by revising zero point to eliminate the roll gap model dynamic error of bringing because roller heat convex degree learning, wearing and tearing and equipment state are continuous, eliminate because of rolling scaduled by the roll gap correction and middlely not constantly switches with the steel layer roll gap model static error of bringing, the accurate control of realization to belt steel thickness.
The present invention is achieved in that a kind of control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision, comprises the following steps:
Step 1, set up one by the static form of the roll gap correction of not carrying out index with the steel layer, steel classification, level of thickness, identical each coiled strip steel of three parameters of width grade are that same layer is other, the initial value of the other roll gap correction of each layer all gets 0, later on when switching band steel layer is other, get the roll gap correction before rolling from form, after rolling end, other roll gap correction of equivalent layer is upgraded;
Before step 2, k coiled strip steel are rolling, with roll gap correction currency
Figure 2010102635913100002DEST_PATH_IMAGE001
With revise currency the zero point of i frame Addition obtains the roll gap model learning coefficient of k coiled strip steel i frame, is used for the rolling setting precomputation of k coiled strip steel,
1) first get roll gap correction currency, as k coiled strip steel and the residing layer of k-1 coiled strip steel not not simultaneously, extract other roll gap correction currency of k coiled strip steel respective layer from the static form of roll gap correction
Figure 564155DEST_PATH_IMAGE001
When as residing in k coiled strip steel and k-1 coiled strip steel layer is not identical, roll gap correction currency
Figure 406209DEST_PATH_IMAGE001
Get the roll gap correction updating value of k-1 coiled strip steel , namely
Figure 928982DEST_PATH_IMAGE001
=
Figure 743354DEST_PATH_IMAGE004
2) then get and revise currency zero point
Figure 2010102635913100002DEST_PATH_IMAGE005
, revise updating value the zero point of getting the corresponding frame of k-1 coiled strip steel
Figure 690451DEST_PATH_IMAGE006
, namely
3) at last with the roll gap correction currency of k coiled strip steel
Figure 19801DEST_PATH_IMAGE001
With revise currency the zero point of k coiled strip steel i frame
Figure 281018DEST_PATH_IMAGE002
Addition obtains the roll gap model learning coefficient of k coiled strip steel i frame, is used for the rolling setting precomputation of k coiled strip steel i frame;
After step 3, k coiled strip steel are rolling, detect and obtain being with steel finish to gauge one-tenth-value thickness 1/10 from being arranged on multi-functional instrument after the frame of finish rolling end
Figure 12213DEST_PATH_IMAGE008
, the actual gap values between rollers of acquisition finish rolling end frame from the rolling process basic automation systems
Figure 2010102635913100002DEST_PATH_IMAGE009
, obtain the band steel target thickness value for rolling setting precomputation from process control computer With the last frame target of finish rolling gap values between rollers
Figure 2010102635913100002DEST_PATH_IMAGE011
, calculate band steel finish to gauge thickness deviation
Figure 12104DEST_PATH_IMAGE012
With initial roll gap deviate
Figure 2010102635913100002DEST_PATH_IMAGE013
:
Figure 811433DEST_PATH_IMAGE014
(1)
Figure 2010102635913100002DEST_PATH_IMAGE015
(2)
And do following selection:
1) when
Figure 459452DEST_PATH_IMAGE016
Satisfy
Figure 2010102635913100002DEST_PATH_IMAGE017
The time, roll gap need not to revise, roll gap correction instantaneous value
Figure 951613DEST_PATH_IMAGE018
Again assignment is 0;
2) when
Figure 255555DEST_PATH_IMAGE016
Satisfy
Figure 2010102635913100002DEST_PATH_IMAGE019
Or
Figure 646523DEST_PATH_IMAGE020
, and
Figure 2010102635913100002DEST_PATH_IMAGE021
The time, roll gap correction instantaneous value
Figure 352311DEST_PATH_IMAGE018
Value be initial roll gap deviate
Figure 749795DEST_PATH_IMAGE013
3) when Satisfy
Figure 619848DEST_PATH_IMAGE019
Or , and
Figure 14106DEST_PATH_IMAGE022
The time, roll gap correction study instantaneous value
Figure 964744DEST_PATH_IMAGE018
Again by formula (3) assignment;
(3)
Wherein, Limit is the strip thickness deviation threshold value;
Step 4, calculate the updating value of the roll gap correction of k coiled strip steel after rolling according to formula (4)
Figure 971883DEST_PATH_IMAGE024
, the layer of judgement k coiled strip steel not, layer as residing in the k coiled strip steel not with the residing layer of k-1 coiled strip steel not not simultaneously, with roll gap correction updating value
Figure 389614DEST_PATH_IMAGE024
Deposit in layer corresponding in the static form of roll gap correction not in; When as residing in k coiled strip steel layer is not identical with residing layer of k-1 coiled strip steel, roll gap correction updating value
Figure 332162DEST_PATH_IMAGE024
Do not deposit in the static form of roll gap correction;
Figure 2010102635913100002DEST_PATH_IMAGE025
(4)
In formula (4): Be the roll gap correction updating value of k coiled strip steel after rolling,
Figure 377664DEST_PATH_IMAGE026
Be the fixed roll gap correction of the rolling setting precomputation of k coiled strip steel currency,
Figure 2010102635913100002DEST_PATH_IMAGE027
For smoothing factor is rule of thumb set;
Step 5, the speed of rolls of collecting each frame, roll gap, roll-force, finish to gauge thickness measured data, calculate the same time point flow thickness of each frame of finish rolling and with time point spring thickness, utilize with revising at time point spring thickness and the zero point of carrying out roll gap with the difference of time point flow thickness; This step specifically comprises:
1) calculate the same time point flow thickness of each frame according to formula (5), (6),
(5)
Figure 2010102635913100002DEST_PATH_IMAGE029
(6)
In formula,
Figure 150634DEST_PATH_IMAGE030
---the actual measurement speed of rolls (m/s) of-Di i frame;
---the actual measurement speed of rolls (m/s) of the last frame of-finish rolling;
Figure 138182DEST_PATH_IMAGE032
---the advancing slip value of-Di i frame;
Figure 2010102635913100002DEST_PATH_IMAGE033
---the advancing slip value of the last frame of-finish rolling;
Figure 490053DEST_PATH_IMAGE034
---the same time point flow thickness (mm) of-Di i frame;
Figure 2010102635913100002DEST_PATH_IMAGE035
----with time point band steel finish to gauge thickness (mm);
---the advancing slip learning coefficient of-Di i frame;
By formula (5), (6) formula as can be known, the advancing slip value of each frame and need mutual iteration with the calculating of time point flow thickness, when iterative computation is with time point flow thickness for the first time, advancing slip value is got the advancing slip value of rolling setting precomputation, obtain advancing slip value after rear substitution formula (6) is upgraded with time point flow thickness, obtain with time point flow thickness and advancing slip value through iterative computation repeatedly;
2) calculate the same time point spring thickness of each frame according to formula (7),
Figure 2010102635913100002DEST_PATH_IMAGE037
(7)
Figure 22852DEST_PATH_IMAGE038
: the same time point spring thickness [mm] of each frame
S ACT: the same time point actual measurement roll gap [mm] of each frame
△ S: basic milling train elongation obtains [mm] according to actual measurement roll-force and milling train constant curve calculation
Figure 2010102635913100002DEST_PATH_IMAGE039
: width compensation coefficient, this coefficient are empirical coefficient
G WID: the width compensation gain, this coefficient is empirical coefficient
△ F OIL: the oil film effect amount calculates [kN] according to the actual measurement speed of rolls and oil film trial curve
G: oil film gain coefficient, this coefficient are empirical coefficient
M: milling train constant, this coefficient are empirical coefficient [kN/mm]
3) utilize with time point spring thickness poor with time point flow thickness, calculate the updating value of revising zero point according to formula (8), (9);
Figure 497695DEST_PATH_IMAGE040
(8)
Figure 2010102635913100002DEST_PATH_IMAGE041
(9)
Wherein:
Figure 650328DEST_PATH_IMAGE042
: the instantaneous value of i frame correction at zero point;
Figure 2010102635913100002DEST_PATH_IMAGE043
: the updating value of i frame correction at zero point;
Figure 959474DEST_PATH_IMAGE044
: the i frame is revised currency zero point;
Figure 2010102635913100002DEST_PATH_IMAGE045
: smoothing factor, this parameter are empirical parameter;
In described step 3, multi-functional instrument detects and obtains being with steel finish to gauge one-tenth-value thickness 1/10
Figure 211464DEST_PATH_IMAGE008
Concrete grammar be, multi-functional instrument receives that time-delay 0.5s begins image data after enabling signal, gathers altogether 10 cycles, per cycle 50ms obtains being with steel finish to gauge one-tenth-value thickness 1/10 to the data that collect by formula (2-1) computing
Figure 173604DEST_PATH_IMAGE008
:
Figure 802031DEST_PATH_IMAGE046
(2-1)。
Obtain the actual gap values between rollers of finish rolling end frame in described step 3 from the rolling process basic automation systems
Figure 166016DEST_PATH_IMAGE009
Concrete grammar be, multi-functional instrument receives that time-delay 6s after enabling signal begins to gather the actual gap values between rollers of finish rolling end frame, gather altogether 10 cycles, per cycle 50ms obtains the actual gap values between rollers of finish rolling end frame to the data that collect by formula (2-2) computing
Figure 526590DEST_PATH_IMAGE009
:
Figure 2010102635913100002DEST_PATH_IMAGE047
(2-2)。
Smoothing factor in described step 4 Value be 0.25.
Smoothing factor in described step 5
Figure 485110DEST_PATH_IMAGE045
Value be 0.5.
In described step 5, to obtain the iterations with time point flow thickness and advancing slip value be three times to iterative computation.
The control method that the present invention utilizes the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision changes by revising zero point to eliminate the roll gap model dynamic error of bringing because roller heat convex degree learning, wearing and tearing and equipment state are continuous, eliminate because of rolling scaduled by the roll gap correction and middlely not constantly switch with the steel layer roll gap model static error of bringing, both unite the setting deviation that use can reduce the roll gap model better.Present technique has been improved the adaptive ability of roll gap model in the unchangeable situation of rolling scaduled layer, thereby improves the setting accuracy of model, realizes the accurate control to belt steel thickness.
Description of drawings
Fig. 1 is that the present invention utilizes the roll gap self adaptation to improve that roll gap correction in the control method of fine-rolling strip steel thickness and precision is upgraded and the FB(flow block) of storage;
Fig. 2 is the FB(flow block) of selecting roll gap correction currency when in the present invention, belt steel rolling is set precomputation;
Fig. 3 utilizes in the present invention with revising FB(flow block) at time point spring thickness and the zero point of carrying out roll gap with the difference of time point flow thickness;
Fig. 4 milling train constant curve;
Fig. 5 oil film trial curve.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's statement, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
A kind of control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision comprises the following steps:
Step 1, set up one by the static form of the roll gap correction of not carrying out index with the steel layer, steel classification, level of thickness, identical each coiled strip steel of three parameters of width grade are that same layer is other, the initial value of the other roll gap correction of each layer all gets 0, later on when switching band steel layer is other, get the roll gap correction before rolling from form, after rolling end, other roll gap correction of equivalent layer is upgraded;
Before step 2, k coiled strip steel are rolling, with roll gap correction currency
Figure 375706DEST_PATH_IMAGE001
With revise currency the zero point of i frame
Figure 235077DEST_PATH_IMAGE002
Addition obtains the roll gap model learning coefficient of k coiled strip steel i frame, is used for the rolling setting precomputation of k coiled strip steel,
1) as shown in Figure 2, first get roll gap correction currency, as k coiled strip steel and the residing layer of k-1 coiled strip steel not not simultaneously, extract other roll gap correction currency of k coiled strip steel respective layer from the static form of roll gap correction
Figure 906230DEST_PATH_IMAGE001
When as residing in k coiled strip steel and k-1 coiled strip steel layer is not identical, roll gap correction currency
Figure 142039DEST_PATH_IMAGE001
Get the roll gap correction updating value of k-1 coiled strip steel
Figure 152721DEST_PATH_IMAGE003
, namely
Figure 182994DEST_PATH_IMAGE001
=
Figure 341442DEST_PATH_IMAGE004
2) then get and revise currency zero point
Figure 115363DEST_PATH_IMAGE005
, revise updating value the zero point of getting the corresponding frame of k-1 coiled strip steel
Figure 980551DEST_PATH_IMAGE006
, namely
3) at last with the roll gap correction currency of k coiled strip steel
Figure 830400DEST_PATH_IMAGE001
With revise currency the zero point of k coiled strip steel i frame
Figure 142433DEST_PATH_IMAGE002
Addition obtains the roll gap model learning coefficient of k coiled strip steel i frame, is used for the rolling setting precomputation of k coiled strip steel i frame;
After step 3, k coiled strip steel are rolling, detect and obtain being with steel finish to gauge one-tenth-value thickness 1/10 from being arranged on multi-functional instrument after the frame of finish rolling end
Figure 190023DEST_PATH_IMAGE008
, the actual gap values between rollers of acquisition finish rolling end frame from the rolling process basic automation systems
Figure 562099DEST_PATH_IMAGE009
, obtain the band steel target thickness value for rolling setting precomputation from process control computer With the last frame target of finish rolling gap values between rollers
Figure 748546DEST_PATH_IMAGE011
, calculate band steel finish to gauge thickness deviation
Figure 650643DEST_PATH_IMAGE012
With initial roll gap deviate
Figure 193620DEST_PATH_IMAGE013
Multi-functional instrument detects and obtains being with steel finish to gauge one-tenth-value thickness 1/10 Concrete grammar be, multi-functional instrument receives that time-delay 0.5s begins image data after enabling signal, gathers altogether 10 cycles, per cycle 50ms obtains being with steel finish to gauge one-tenth-value thickness 1/10 to the data that collect by formula (2-1) computing
Figure 470722DEST_PATH_IMAGE008
:
Figure 165009DEST_PATH_IMAGE046
(2-1)。
Obtain the actual gap values between rollers of finish rolling end frame from the rolling process basic automation systems
Figure 878887DEST_PATH_IMAGE009
Concrete grammar be, multi-functional instrument receives that time-delay 6s after enabling signal begins to gather the actual gap values between rollers of finish rolling end frame, gather altogether 10 cycles, per cycle 50ms obtains the actual gap values between rollers of finish rolling end frame to the data that collect by formula (2-2) computing :
(2-2)。
As shown in Figure 1, calculate band steel finish to gauge thickness deviation
Figure 992839DEST_PATH_IMAGE016
With initial roll gap deviate
Figure 143198DEST_PATH_IMAGE013
:
Figure 472548DEST_PATH_IMAGE014
(1)
Figure 733765DEST_PATH_IMAGE015
(2)
And do following selection:
1) when
Figure 137065DEST_PATH_IMAGE016
Satisfy
Figure 458325DEST_PATH_IMAGE017
The time, roll gap need not to revise, roll gap correction instantaneous value
Figure 277901DEST_PATH_IMAGE018
Again assignment is 0;
2) when
Figure 77229DEST_PATH_IMAGE016
Satisfy
Figure 600614DEST_PATH_IMAGE019
Or
Figure 92776DEST_PATH_IMAGE020
, and
Figure 131139DEST_PATH_IMAGE021
The time, roll gap correction instantaneous value
Figure 734159DEST_PATH_IMAGE018
Value be initial roll gap deviate
Figure 377629DEST_PATH_IMAGE013
3) when
Figure 775113DEST_PATH_IMAGE016
Satisfy
Figure 566351DEST_PATH_IMAGE019
Or
Figure 707483DEST_PATH_IMAGE020
, and
Figure 205460DEST_PATH_IMAGE022
The time, roll gap correction study instantaneous value
Figure 765056DEST_PATH_IMAGE018
Again by formula (3) assignment;
Figure 43590DEST_PATH_IMAGE023
(3)
Wherein, Limit is the strip thickness deviation threshold value;
Step 4, is as shown in Figure 1 calculated the updating value of the roll gap correction of k coiled strip steel after rolling according to formula (4) , the layer of judgement k coiled strip steel not, layer as residing in the k coiled strip steel not with the residing layer of k-1 coiled strip steel not not simultaneously, with roll gap correction updating value
Figure 340896DEST_PATH_IMAGE024
Deposit in layer corresponding in the static form of roll gap correction not in; When as residing in k coiled strip steel layer is not identical with residing layer of k-1 coiled strip steel, roll gap correction updating value
Figure 345761DEST_PATH_IMAGE024
Do not deposit in the static form of roll gap correction;
Figure 846013DEST_PATH_IMAGE025
(4)
In formula (4): Be the roll gap correction updating value of k coiled strip steel after rolling,
Figure 801516DEST_PATH_IMAGE026
Be the fixed roll gap correction of the rolling setting precomputation of k coiled strip steel currency,
Figure 711704DEST_PATH_IMAGE027
For smoothing factor is rule of thumb set, value is 0.25 in the present embodiment;
Step 5, as shown in Figure 3, after multi-functional instrument is received enabling signal, time-delay 6s begins image data, gather altogether 10 cycles, per cycle 50ms, to the data that collect by the processing as formula (2-1), obtain the speed of rolls, roll gap, roll-force, the finish to gauge thickness measured data of each frame, calculate the same time point flow thickness of each frame of finish rolling and with time point spring thickness, utilize with revising at time point spring thickness and the zero point of carrying out roll gap with the difference of time point flow thickness; This step specifically comprises:
1) calculate the same time point flow thickness of each frame according to formula (5), (6),
(5)
Figure 988806DEST_PATH_IMAGE029
(6)
In formula,
Figure 315882DEST_PATH_IMAGE030
---the actual measurement speed of rolls (m/s) of-Di i frame;
Figure 662550DEST_PATH_IMAGE031
---the actual measurement speed of rolls (m/s) of the last frame of-finish rolling;
Figure 137393DEST_PATH_IMAGE032
---the advancing slip value of-Di i frame;
Figure 962130DEST_PATH_IMAGE033
---the advancing slip value of the last frame of-finish rolling;
Figure 143712DEST_PATH_IMAGE034
---the same time point flow thickness (mm) of-Di i frame;
Figure 661281DEST_PATH_IMAGE035
----with time point band steel finish to gauge thickness (mm);
---the advancing slip learning coefficient of-Di i frame;
By formula (5), (6) formula as can be known, the advancing slip value of each frame and need mutual iteration with the calculating of time point flow thickness, when iterative computation is with time point flow thickness for the first time, advancing slip value is got the advancing slip value of rolling setting precomputation, obtain advancing slip value after rear substitution formula (6) is upgraded with time point flow thickness, obtain with time point flow thickness and advancing slip value through iterative computation repeatedly, carry out in the present embodiment three iteration and obtain accurately with time point flow thickness and advancing slip value;
2) according to the same time point actual achievement data of collecting previously, utilize formula (7) can calculate the same time point spring thickness of each frame, just with the actual achievement data of corresponding frame, accomplish corresponding one by one when calculating certain frame.
Figure 251849DEST_PATH_IMAGE037
(7)
Figure 287938DEST_PATH_IMAGE038
: the same time point spring thickness [mm] of each frame
S ACT: the same time point actual measurement roll gap [mm] of each frame
△ S: basic milling train elongation obtains [mm] according to actual measurement roll-force and milling train constant curve calculation
Figure 976408DEST_PATH_IMAGE039
: width compensation coefficient, this coefficient are empirical coefficient, and the strip width data that obtain according to test are made to table look-up after form and obtained
G WID: the width compensation gain, this coefficient is empirical coefficient, gets in the present embodiment constant 1.0
△ F OIL: the oil film effect amount calculates [kN] according to the actual measurement speed of rolls and oil film trial curve
G: oil film gain coefficient, this coefficient are empirical coefficient, usually get in the present embodiment constant 1.0
M: milling train constant, this coefficient are empirical coefficient, obtain [kN/mm] by the test of milling train constant
3) utilize with time point spring thickness poor with time point flow thickness, calculate the updating value of revising zero point according to formula (8), (9);
Figure 428774DEST_PATH_IMAGE048
(8)
Figure 595313DEST_PATH_IMAGE041
(9)
Wherein:
Figure 751488DEST_PATH_IMAGE042
: the instantaneous value of i frame correction at zero point;
Figure 610859DEST_PATH_IMAGE043
: the updating value of i frame correction at zero point;
Figure 282012DEST_PATH_IMAGE044
: the i frame is revised currency zero point;
Figure 455504DEST_PATH_IMAGE045
: smoothing factor, this parameter are empirical parameter, and value is 0.5 in the present embodiment.
The below provide the concrete 8 corresponding step 2, three of coiled strip steels of certain domestic hot rolling line, four the computational process of roll gap correction.
In table 1, represent not sign of layer with LOTF, value be 0 o'clock be that different layers is other, value be 1 o'clock be that same layer is other, with the not rolling band steel reel number of layer, the TBL item is the value in the other roll gap correction static state of current layer form with NLOT representative.And if only if new layer during rolling the 1st volume, does not just store rolling rear roll gap correction updating value into other roll gap correction static state form of current layer, and strip thickness deviation threshold value Limit is set as 0.025mm.
Figure 2010102635913100002DEST_PATH_IMAGE049
The 1st volume: the other LOTF of new layer gets 0, dso and gets static table scale value-0.15; Rolling complete obtain the actual achievement data after, rolling after, the calculated thickness deviation
Figure 590820DEST_PATH_IMAGE014
=0.08, initial roll gap deviate
Figure 621092DEST_PATH_IMAGE015
=-0.77, satisfy
Figure 717224DEST_PATH_IMAGE012
0.025 condition, simultaneously
Figure 225566DEST_PATH_IMAGE021
Therefore, roll gap correction study instantaneous value
Figure 421580DEST_PATH_IMAGE018
Get
Figure 560437DEST_PATH_IMAGE050
Value-0.77; At last,
Figure DEST_PATH_IMAGE051
=-0.15-0.77*0.25=-0.34; Because be that new layer is other, dsn is stored in static form
The 2nd volume: other code HNO3 is different from the 1st volume for layer, therefore LOTF=0, dso gets static table scale value-0.18; After rolling, the calculated thickness deviation =0.04, initial roll gap deviate =-0.47, satisfy
Figure 565805DEST_PATH_IMAGE012
0.025 condition, simultaneously
Figure 937881DEST_PATH_IMAGE021
Therefore, roll gap correction study instantaneous value
Figure 70922DEST_PATH_IMAGE018
Get
Figure 124328DEST_PATH_IMAGE050
Value-0.47; At last,
Figure 26425DEST_PATH_IMAGE051
=-0.3; Because be that new layer is other, dsn is stored in static form.
The 3rd volume: the other code of layer is identical, therefore LOTF=1, NLOT=2, dso get the 2nd volume dsn value-0.3; After rolling, the calculated thickness deviation
Figure 569402DEST_PATH_IMAGE014
=0.04, initial roll gap deviate
Figure 938809DEST_PATH_IMAGE015
=-0.25, satisfy
Figure 795906DEST_PATH_IMAGE012
0.025 condition, simultaneously
Figure 552509DEST_PATH_IMAGE021
Therefore, roll gap correction study instantaneous value
Figure 266388DEST_PATH_IMAGE018
Get
Figure 311704DEST_PATH_IMAGE050
Value-0.25; At last,
Figure 769230DEST_PATH_IMAGE051
=-0.36; Because be that old layer is other, so dsn does not store in static form.
The 4th volume: other code HNO2, HNO3 are different from the 3rd volume for layer, therefore LOTF=0, dso gets static table scale value-0.01; After rolling, the calculated thickness deviation
Figure 380340DEST_PATH_IMAGE014
=-0.07, initial roll gap deviate
Figure 530699DEST_PATH_IMAGE015
=0.02, satisfy
Figure 797732DEST_PATH_IMAGE012
＜-0.025 condition, simultaneously
Figure 793370DEST_PATH_IMAGE021
Therefore, roll gap correction study instantaneous value
Figure 524565DEST_PATH_IMAGE018
Get
Figure 783508DEST_PATH_IMAGE050
Value 0.02; At last,
Figure 337505DEST_PATH_IMAGE051
=0.02; Because be that new layer is other, DSN is stored in static form;
The 5th volume: the other code of layer is identical, therefore LOTF=1, NLOT=2, dso get the 4th volume dsn value 0.02; After rolling, the calculated thickness deviation
Figure 402413DEST_PATH_IMAGE014
=0.05, initial roll gap deviate =-0.47, satisfy
Figure 214697DEST_PATH_IMAGE012
0.025 condition, simultaneously
Figure 456323DEST_PATH_IMAGE021
Therefore, roll gap correction study instantaneous value
Figure 59342DEST_PATH_IMAGE018
Get
Figure 499551DEST_PATH_IMAGE050
Value-0.47; At last,
Figure 162614DEST_PATH_IMAGE051
=-0.1; Because be that old layer is other, so dsn does not store in static form.
The 6th volume: the other code of layer is identical, therefore LOTF=1, NLOT=3, dso get the 5th volume dsn value-0.1; After rolling, the calculated thickness deviation
Figure 625956DEST_PATH_IMAGE052
, initial roll gap deviate
Figure DEST_PATH_IMAGE053
, because-0.025＜
Figure 97913DEST_PATH_IMAGE012
＜0.025, therefore roll gap correction study instantaneous value
Figure 658207DEST_PATH_IMAGE018
Get 0; At last,
Figure 164275DEST_PATH_IMAGE054
Because be that old layer is other, so dsn does not store in static form.
The 7th volume: the other code of layer is identical, therefore LOTF=1, NLOT=4, dso get the 6th volume dsn value-0.1; After rolling, the calculated thickness deviation
Figure 442810DEST_PATH_IMAGE014
=-0.04, initial roll gap deviate
Figure 387632DEST_PATH_IMAGE015
=-0.29, because
Figure 740116DEST_PATH_IMAGE012
＜-0.025, simultaneously
Figure DEST_PATH_IMAGE055
Therefore, roll gap correction study instantaneous value
Figure 541719DEST_PATH_IMAGE018
Get-0.5*
Figure 41970DEST_PATH_IMAGE012
=0.02; At last,
Figure 728166DEST_PATH_IMAGE051
=-0.1; Because be that old layer is other, so dsn does not store in static form.
The 8th volume: the other code of layer is identical, therefore LOTF=1, NLOT=5, dso get the 7th volume dsn value-0.1; After rolling, the calculated thickness deviation
Figure 997474DEST_PATH_IMAGE014
=-0.02, initial roll gap deviate
Figure 176170DEST_PATH_IMAGE015
=-0.13, because-0.025＜ ＜0.025, therefore roll gap correction study instantaneous value
Figure 388025DEST_PATH_IMAGE018
Get 0; At last, Because be that old layer is other, so dsn does not store in static form.
Because data volume is larger, the below only provides the computational process of the corresponding step 5 of the first coiled strip steel in table 1.
When going into operation, production line obtains milling train constant curve and oil film trial curve as shown in Fig. 4,5 by the testing experiment data.
In table 1, the finished width of the first coiled strip steel is 1110mm, band steel target thickness value 1.8mm F1 frame inlet thickness is 31.9mm.
The actual measurement speed of rolls of finish rolling end frame
Figure DEST_PATH_IMAGE057
Being 9.92m/s, is 1.87mm (these data are different from the actual measurement thickness in table 1, are because both collections are different opportunity) with time point band steel finish to gauge thickness.The advancing slip value of iterative computation is got the value of rolling setting precomputation for the first time, through after three iterative computation, and the same time point flow thickness of each frame and result of calculation such as the table 2 of advancing slip value.
Figure 333350DEST_PATH_IMAGE058
Milling train elongation corresponding to basic milling train elongation=actual measurement roll-force-milling train elongation corresponding to acyclic homologically trioial roll-force
The oil film effect amount that the oil film effect amount that oil film effect amount=actual measurement roll rotational speed is corresponding-the acyclic homologically trioial roll rotational speed is corresponding
The same time point spring thickness of each frame
Figure 423666DEST_PATH_IMAGE038
Result of calculation such as table 3, width compensation gain G in the present embodiment WIDReach all values 1.0 of oil film gain coefficient G, table look-up with strip width 1110mm and obtain the width compensation coefficient
Figure 667566DEST_PATH_IMAGE039
Be 0.961, obtain basic milling train elongation △ S according to actual measurement roll-force and milling train constant curve as shown in Figure 4, obtain oil film effect amount △ F according to the actual measurement speed of rolls and oil film trial curve as shown in Figure 5 OIL, obtaining milling train constant M by the test of milling train constant, the same time point spring thickness that finally obtains each frame is as shown in table 3.
Figure DEST_PATH_IMAGE059
The below provides the computational process of the first coiled strip steel correction at zero point.Wherein, the spring thickness of the instantaneous value of revising zero point by each frame deducts flow thickness and obtains, and the currency of revising zero point is the updating value of the last coiled strip steel got of rolling setting precomputation, and the updating value that revise zero point obtains by formula (9).
Figure 185135DEST_PATH_IMAGE060

Claims (6)

1. control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision comprises the following steps:
Step 1, set up one by the static form of the roll gap correction of not carrying out index with the steel layer, steel classification, level of thickness, identical each coiled strip steel of three parameters of width grade are that same layer is other, the initial value of the other roll gap correction of each layer all gets 0, later on when switching band steel layer is other, get the roll gap correction before rolling from form, after rolling end, other roll gap correction of equivalent layer is upgraded;
Before step 2, k coiled strip steel are rolling, with roll gap correction currency
Figure 2010102635913100001DEST_PATH_IMAGE001
With revise currency the zero point of i frame Addition obtains the roll gap model learning coefficient of k coiled strip steel i frame, is used for the rolling setting precomputation of k coiled strip steel,
1) first get roll gap correction currency, as k coiled strip steel and the residing layer of k-1 coiled strip steel not not simultaneously, extract other roll gap correction currency of k coiled strip steel respective layer from the static form of roll gap correction
Figure 36711DEST_PATH_IMAGE001
When as residing in k coiled strip steel and k-1 coiled strip steel layer is not identical, roll gap correction currency Get the roll gap correction updating value of k-1 coiled strip steel
Figure 2010102635913100001DEST_PATH_IMAGE003
, namely
Figure 467657DEST_PATH_IMAGE001
=
Figure 814325DEST_PATH_IMAGE004
2) then get and revise currency zero point , revise updating value the zero point of getting the corresponding frame of k-1 coiled strip steel
Figure 289169DEST_PATH_IMAGE006
, namely;
Figure 379484DEST_PATH_IMAGE008
3) at last with the roll gap correction currency of k coiled strip steel
Figure 623384DEST_PATH_IMAGE001
With revise currency the zero point of k coiled strip steel i frame
Figure 875374DEST_PATH_IMAGE002
Addition obtains the roll gap model learning coefficient of k coiled strip steel i frame, is used for the rolling setting precomputation of k coiled strip steel i frame;
After step 3, k coiled strip steel are rolling, detect and obtain being with steel finish to gauge one-tenth-value thickness 1/10 from being arranged on multi-functional instrument after the frame of finish rolling end
Figure DEST_PATH_IMAGE009
, the actual gap values between rollers of acquisition finish rolling end frame from the rolling process basic automation systems
Figure 837514DEST_PATH_IMAGE010
, obtain the band steel target thickness value for rolling setting precomputation from process control computer
Figure DEST_PATH_IMAGE011
With the last frame target of finish rolling gap values between rollers
Figure 465941DEST_PATH_IMAGE012
, calculate band steel finish to gauge thickness deviation
Figure DEST_PATH_IMAGE013
With initial roll gap deviate
Figure 895173DEST_PATH_IMAGE014
:
Figure DEST_PATH_IMAGE015
(1)
Figure 318064DEST_PATH_IMAGE016
(2)
And do following selection:
1) when
Figure DEST_PATH_IMAGE017
Satisfy
Figure 829817DEST_PATH_IMAGE018
The time, roll gap need not to revise, roll gap correction instantaneous value
Figure DEST_PATH_IMAGE019
Again assignment is 0;
2) when
Figure 324252DEST_PATH_IMAGE017
Satisfy Or
Figure DEST_PATH_IMAGE021
, and
Figure 133606DEST_PATH_IMAGE022
The time, roll gap correction instantaneous value
Figure 804759DEST_PATH_IMAGE019
Value be initial roll gap deviate
3) when
Figure 113567DEST_PATH_IMAGE017
Satisfy
Figure 143839DEST_PATH_IMAGE020
Or
Figure 239971DEST_PATH_IMAGE021
, and
Figure DEST_PATH_IMAGE023
The time, roll gap correction study instantaneous value
Figure 76209DEST_PATH_IMAGE019
Again by formula (3) assignment;
Figure 3714DEST_PATH_IMAGE024
(3)
Wherein, Limit is the strip thickness deviation threshold value;
Step 4, calculate the updating value of the roll gap correction of k coiled strip steel after rolling according to formula (4)
Figure DEST_PATH_IMAGE025
, the layer of judgement k coiled strip steel not, layer as residing in the k coiled strip steel not with the residing layer of k-1 coiled strip steel not not simultaneously, with roll gap correction updating value
Figure 270135DEST_PATH_IMAGE025
Deposit in layer corresponding in the static form of roll gap correction not in; When as residing in k coiled strip steel layer is not identical with residing layer of k-1 coiled strip steel, roll gap correction updating value
Figure 853563DEST_PATH_IMAGE025
Do not deposit in the static form of roll gap correction;
Figure 165596DEST_PATH_IMAGE026
(4)
In formula (4): Be the roll gap correction updating value of k coiled strip steel after rolling,
Figure DEST_PATH_IMAGE027
Be the fixed roll gap correction of the rolling setting precomputation of k coiled strip steel currency, For smoothing factor is rule of thumb set;
Step 5, the speed of rolls of collecting each frame, roll gap, roll-force, finish to gauge thickness measured data, calculate the same time point flow thickness of each frame of finish rolling and with time point spring thickness, utilize with revising at time point spring thickness and the zero point of carrying out roll gap with the difference of time point flow thickness; This step specifically comprises:
1) calculate the same time point flow thickness of each frame according to formula (5), (6),
Figure DEST_PATH_IMAGE029
(5)
Figure 780619DEST_PATH_IMAGE030
(6)
In formula,
Figure DEST_PATH_IMAGE031
---the actual measurement speed of rolls of-Di i frame;
Figure 18047DEST_PATH_IMAGE032
---the actual measurement speed of rolls of the last frame of-finish rolling;
Figure DEST_PATH_IMAGE033
---the advancing slip value of-Di i frame;
Figure 920144DEST_PATH_IMAGE034
---the advancing slip value of the last frame of-finish rolling;
Figure DEST_PATH_IMAGE035
---the same time point flow thickness of-Di i frame;
Figure 525438DEST_PATH_IMAGE036
----with time point band steel finish to gauge thickness;
Figure DEST_PATH_IMAGE037
---the advancing slip learning coefficient of-Di i frame;
By formula (5), (6) formula as can be known, the advancing slip value of each frame and need mutual iteration with the calculating of time point flow thickness, when iterative computation is with time point flow thickness for the first time, advancing slip value is got the advancing slip value of rolling setting precomputation, obtain advancing slip value after rear substitution formula (6) is upgraded with time point flow thickness, obtain with time point flow thickness and advancing slip value through iterative computation repeatedly;
2) calculate the same time point spring thickness of each frame according to formula (7),
Figure 880196DEST_PATH_IMAGE038
(7)
: the same time point spring thickness of each frame
S ACT: the same time point actual measurement roll gap of each frame
△ S: basic milling train elongation obtains according to actual measurement roll-force and milling train constant curve calculation
Figure 861927DEST_PATH_IMAGE040
: width compensation coefficient, this coefficient are empirical coefficient
G WID: the width compensation gain, this coefficient is empirical coefficient
△ F OIL: the oil film effect amount calculates according to the actual measurement speed of rolls and oil film trial curve
G: oil film gain coefficient, this coefficient are empirical coefficient
M: milling train constant, this coefficient are empirical coefficient
3) utilize with time point spring thickness poor with time point flow thickness, calculate the updating value of revising zero point according to formula (8), (9);
Figure DEST_PATH_IMAGE041
(8)
Figure 683777DEST_PATH_IMAGE042
(9)
Wherein:
Figure DEST_PATH_IMAGE043
: the instantaneous value of i frame correction at zero point;
Figure 459972DEST_PATH_IMAGE044
: the updating value of i frame correction at zero point;
Figure DEST_PATH_IMAGE045
: the i frame is revised currency zero point;
Figure 567605DEST_PATH_IMAGE046
: smoothing factor, this parameter are empirical parameter.
2. the control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision as claimed in claim 1, it is characterized in that: in described step 3, multi-functional instrument detects and obtains being with steel finish to gauge one-tenth-value thickness 1/10
Figure 25131DEST_PATH_IMAGE009
Concrete grammar be, multi-functional instrument receives that time-delay 0.5s begins image data after enabling signal, gathers altogether 10 cycles, per cycle 50ms obtains being with steel finish to gauge one-tenth-value thickness 1/10 to the data that collect by formula (2-1) computing
Figure 636241DEST_PATH_IMAGE009
:
Figure DEST_PATH_IMAGE047
(2-1)
Figure 786600DEST_PATH_IMAGE048
It is the band steel finish to gauge thickness measured value in i cycle.
3. the control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision as claimed in claim 1, is characterized in that: obtain the actual gap values between rollers of finish rolling end frame in described step 3 from the rolling process basic automation systems
Figure 113020DEST_PATH_IMAGE010
Concrete grammar be, multi-functional instrument receives that time-delay 6s after enabling signal begins to gather the actual gap values between rollers of finish rolling end frame, gather altogether 10 cycles, per cycle 50ms obtains the actual gap values between rollers of finish rolling end frame to the data that collect by formula (2-2) computing
Figure 374238DEST_PATH_IMAGE010
:
Figure DEST_PATH_IMAGE049
(2-2)
Figure 902171DEST_PATH_IMAGE048
It is the actual roll gap measured value of finish rolling end frame in i cycle.
4. the control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision as claimed in claim 1, is characterized in that: smoothing factor in described step 4
Figure 161114DEST_PATH_IMAGE028
Value be 0.25.
5. the control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision as claimed in claim 1, is characterized in that: smoothing factor in described step 5
Figure 977760DEST_PATH_IMAGE046
Value be 0.5.
6. the control method of utilizing the roll gap self adaptation to improve the fine-rolling strip steel thickness and precision as claimed in claim 1 is characterized in that: in described step 5, to obtain the iterations with time point flow thickness and advancing slip value be three times to iterative computation.
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* Cited by examiner, † Cited by third party
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CN114733913B (en) * 2022-03-22 2024-03-26 安阳钢铁股份有限公司 Roll gap compensation system of hot continuous rolling finishing mill group based on statistical analysis
CN114798760A (en) * 2022-04-28 2022-07-29 广西广盛新材料科技有限公司 Method, device, terminal and medium for adjusting roll gap of finishing mill of steel production line

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1546947A (en) * 2003-12-10 2004-11-17 东北大学 Method for predicting steel plate thickness during rolling process
JP2009113101A (en) * 2007-11-09 2009-05-28 Jfe Steel Corp Method and apparatus for learning control of rolling load, and manufacturing method of steel sheet
CN101618401A (en) * 2009-07-24 2010-01-06 东北大学 High precision strip rolling thickness control method based on feedback signals by thickness gauge
CN101804420A (en) * 2009-10-10 2010-08-18 唐山国丰钢铁有限公司 Method for controlling precision rolling thickness in production of hot rolled sheet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2287842C (en) * 1998-02-27 2005-03-22 Nippon Steel Corporation Sheet rolling method and sheet rolling mill

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1546947A (en) * 2003-12-10 2004-11-17 东北大学 Method for predicting steel plate thickness during rolling process
JP2009113101A (en) * 2007-11-09 2009-05-28 Jfe Steel Corp Method and apparatus for learning control of rolling load, and manufacturing method of steel sheet
CN101618401A (en) * 2009-07-24 2010-01-06 东北大学 High precision strip rolling thickness control method based on feedback signals by thickness gauge
CN101804420A (en) * 2009-10-10 2010-08-18 唐山国丰钢铁有限公司 Method for controlling precision rolling thickness in production of hot rolled sheet

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
叶红卫.宝钢2050热轧过程厚度控制技术.《宝钢技术》.2003,(第01期),第23-27页.
宝钢2050热轧过程厚度控制技术;叶红卫;《宝钢技术》;20030225(第01期);第23-27页 *
张红云.高精度中厚板轧制的厚度控制研究.《陕西科技大学学报》.2006,(第05期),第88-92页.
高精度中厚板轧制的厚度控制研究;张红云;《陕西科技大学学报》;20061025(第05期);第88-92页 *

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