CN102652961B - Control device and control method - Google Patents
Control device and control method Download PDFInfo
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- CN102652961B CN102652961B CN201110114696.7A CN201110114696A CN102652961B CN 102652961 B CN102652961 B CN 102652961B CN 201110114696 A CN201110114696 A CN 201110114696A CN 102652961 B CN102652961 B CN 102652961B
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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
- B21B37/18—Automatic gauge control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
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- Feedback Control In General (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The invention discloses a control device and a control method. The control device and the control method are characterized in that, even when a measurer is switched to another measurer, a hot rolling device is properly and continuously controlled, and sudden change of a measuring value is prevented. The control device comprises: a multi-purpose measuring instrument measuring a first process value, a flatness instrument measuring a second process value, an abnormity detection part detecting abnormity of the multi-purpose measuring instrument, a process information storage part storing process information, a learning item calculating part calculating a learning item (Z) used for correcting the second process value, a learning item storage part storing the learning item (Z), a correction part generating a correction panel width value, a selection part selecting the first process value before the time when abnormity is detected, and the correction panel width value after the time when abnormity is detected, and a device control part controlling rolling lines based on the selected process value and the selected correction process value.
Description
Technical field
The present invention relates to control the control device of hot-rolling arrangement, even if particularly comprise that plural analyzer also suitably continues control device and the control method of operation when an analyzer breaks down.
Background technology
In recent years, client is more and more stricter to take the quality requirements of the rolled products that iron and steel is representative, and this requires high-caliber qualitative control.For example, in hot-rolling arrangement, there are the management projects such as, finishing mill outlet side temperature wide by the thickness of slab of stocking, plate, coiling temperature, need to control each equipment of hot-rolling arrangement, make the value of management project respectively in predetermined range of management.
For example, wide about the plate of stocking, plate is wide itself is about 600mm～2300mm, in contrast to this, require the wide precision of plate after finish rolling with respect to desired value in the range of management of 0～8mm left and right.In addition, this range of management be with respect to wide as the desired plate of product, to the desired value of whole length by the long side direction of stocking (direction of transfer), if exceed range of management and become negative value with respect to desired value in this interval, cannot revise.
Therefore,, in order to carry out qualitative control and not exceed range of management with the wide precision of high plate, need to utilize the width correction means such as slab sizing press (slab sizing press), edging mill to control.In the situation that using edging mill, utilize continuously horizontal rolling mill (mill) to make thickness of slab attenuation.Now, the width end that is called dog bone type (dog bone) while having used edging mill produces local deformation portion, because horizontal rolling mill causes producing width distortion to depressing of this part, because horizontal rolling mill causes producing width, expands.In addition, because the variations in temperature in the operation of rolling causes by the yielding degree of stocking, is that resistance of deformation also changes.Therefore, utilize computation model accurately calculate because of edging mill and the wide variable quantity of the caused plate of horizontal rolling mill be very difficult.Thereby the milestone on hot-rolling arrangement (roll line) arranges the wide width measurements device of measuring of plate mostly, utilize the wide study of carrying out accuracy control and computation model of plate being determined by this width measurements device.
In patent documentation 1, recorded as lower plate width controlling method: finishing mill outlet side width desired value is revised, made to be configured in the width difference between width desired value before the resulting mensuration width of width measurements device before the coiling machine of stocking and predetermined coiling machine, equal to be configured in the resulting mensuration width of width measurements device of finishing mill outlet side and the width difference between predetermined hot finishing mill outlet side width desired value.
Patent documentation 1: No. 3341622 communique of Japan Patent
So far, because analyzer needs to safeguard, therefore, except the more cheap situation of analyzer itself, not too the same position on roll line arranges many analyzers.But, in recent years, there is the situation that a plurality of analyzers is set, also can switches to use to these analyzers.
Sometimes, such as being provided with by ccd video camera Edge detected with the wide width measurements device of assay plate, a plurality of X-ray detectors being set to carry out the width measurements device of the many measure modes such as width measurements device of rim detection according to X ray transmission amount at plate width direction, and these analyzers are switched to use.Yet different according to the mensuration mode of width measurements device, the wide value of plate of measuring is sometimes also different.
In addition, according to production line structure, sometimes such as configuring the identical width measurements device of a plurality of mensuration modes at identical or close qualitative control points such as finishing mill outlet sides.For example, comprise the first width measurements device that is used as common system (main system) and the second width measurements device that is used as non-common system (back-up system), when the first width measurements device produces fault, by being switched to the second width measurements device, proceed width measurements.
Yet, even in the situation that as the first width measurements device of the identical analyzer of mensuration mode and the second width measurements device to being measured by the same determination object point of stocking, measured value sometimes also can be different.This can think to cause measuring point difference and analyzer itself to exist the reasons such as individual difference to cause because a little skew result occurs measuring point.This is called to machine error.Can think, if there is this machine error,, in the situation that the first width measurements device produces fault, even if be switched to the second width measurements device, measured value is also different.Thus, because measured value changes suddenly, therefore, the control of hot-rolling arrangement is brought to impact, result causes the quality of product to change.
Similarly, though the plate width controlling method that uses patent documentation 1 to record, due in the situation that width measurements device is switched to use, measured value changes suddenly when switching, therefore, also can bring impact to the control of hot-rolling arrangement, result causes the quality of product to change.
Summary of the invention
The present invention completes in view of the above problems, even if it provides a kind of when being switched to another analyzer from an analyzer, also suitably continue hot-rolling arrangement to control and the control device and the control method that do not make measured value change suddenly.
In order to achieve the above object, the First Characteristic of control device involved in the present invention is, comprising: the first determination part, and this first determination part is measured the process values on the roll line being rolled by stocking as the first process values; The second determination part, this second determination part is using measuring as the second process values with the congener process values of described the first process values on described roll line; Abnormity detection portion, this abnormity detection portion detects the abnormal of described the first determination part; Procedural information storage part, this procedural information storage part by described the first process values, described the second process values, represent to determine described the first process values and described the second process values the moment mensuration time information and represent that by described abnormity detection portion, detecting the abnormality detection time information in the abnormal moment is associated, and store as procedural information; A study calculating part, this study calculating part, based on described procedural information, calculates for described the second process values is revised so that it approaches the study item of described the first process values; A study storage part, this study storage part is stored the study item being calculated by a described study calculating part; Correction portion, this correction portion, based on described procedural information, is utilized the study item of being stored by a described study storage part to revise described the second process values, thereby is generated makeover process value; Selection portion, this selection portion, based on described procedural information, is chosen in by described abnormity detection portion and detects former described the first process values of the abnormal moment and the described makeover process value after detecting the abnormal moment by described abnormity detection portion; And equipment control part, this equipment control part, based on by the selected process values of described selection portion and makeover process value, is controlled described roll line.
In order to achieve the above object, the Second Characteristic of control device involved in the present invention is, the procedural information that a described study calculating part is stored based on described procedural information storage part, calculate the difference of described the first process values and described the second process values, and described study item during the last rolling of storing based on the described difference calculating and a described study storage part, by exponential smoothing, calculate new described study, the described new study item calculating is stored in a described study storage part.
In order to achieve the above object, the 3rd of control device involved in the present invention is characterised in that, described abnormity detection portion is calculated the standard deviation of described the first process values, when this standard deviation surpasses preset range or is zero, is judged to be described the first determination part and has occurred extremely.
In order to achieve the above object, the 4th of control device involved in the present invention is characterised in that, a described study calculating part based on by described the first determination part and the second determination part each other with respect to described by the position relationship of stocking the first process values that identical Site Determination goes out substantially and the difference of the second process values, calculate for described the second process values is revised so that it approaches the study item of described the first process values.
In order to achieve the above object, the First Characteristic of control method involved in the present invention is, comprising: the first determination step, and this first determination step is measured the process values on the roll line being rolled by stocking as the first process values; The second determination step, this second determination step is using measuring as the second process values with the congener process values of described the first process values on described roll line; Abnormality detection step, this abnormality detection step detects the abnormal of described the first determination step; Procedural information storing step, this procedural information storing step by described the first process values, described the second process values, represent to determine described the first process values and described the second process values the moment mensuration time information and represent that by described abnormity detection portion, detecting the abnormality detection time information in the abnormal moment is associated, and be stored in procedural information storage part as procedural information; A study calculation procedure, this study calculation procedure, based on described procedural information, is calculated for described the second process values is revised so that it approaches the study item of described the first process values; A study storing step, this study storing step is stored in the study item being calculated by a described study calculation procedure in a study storage part; Revise step, this revises step based on described procedural information, utilizes the study item of being stored by a described study storing step to revise described the second process values, thereby generates makeover process value; Select step, this selects step based on described procedural information, is chosen in by described abnormality detection step and detects described the first process values and the described makeover process value after detecting the abnormal moment by described abnormality detection step in the past of the abnormal moment; And equipment control step, this equipment is controlled step based on by the selected process values of described selection step and makeover process value, and described roll line is controlled.
In order to achieve the above object, the Second Characteristic of control method involved in the present invention is, the procedural information that a described study calculation procedure is stored based on described procedural information storage part, calculate the difference of described the first process values and described the second process values, and described study item during the last rolling of storing based on the described difference calculating and a described study storage part, by exponential smoothing, calculate new described study, the described new study item calculating is stored in a described study storage part.
In order to achieve the above object, the 3rd of control method involved in the present invention is characterised in that, described abnormality detection step is calculated the standard deviation of described the first process values, when this standard deviation surpasses preset range or is zero, is judged to be described the first determination step and has occurred extremely.
In order to achieve the above object, the 4th of control method involved in the present invention is characterised in that, a described study calculation procedure based on by described the first determination step and the second determination step each other with respect to described by the position relationship of stocking the first process values that identical Site Determination goes out substantially and the difference of the second process values, calculate for described the second process values is revised so that it approaches the study item of described the first process values.
According to control device of the present invention and control method, even when being switched to another analyzer from an analyzer, also can suitably continue hot-rolling arrangement control and do not make measured value change suddenly.
Accompanying drawing explanation
Fig. 1 means the structure chart of the structure of the hot-rolling arrangement of being controlled by the related control device of an embodiment of the invention.
Fig. 2 means the structure chart of the functional structure of the control device that an embodiment of the invention are related.
Fig. 3 means the figure of an example of the procedural information of storing in the included procedural information storage part of the related control device of an embodiment of the invention.
Fig. 4 means the figure of an example of the study item of storing in the included study item storage part of the related control device of an embodiment of the invention.
Fig. 5 means the flow chart of the treatment step of the control device that an embodiment of the invention are related.
Fig. 6 be in the related control device of an embodiment of the invention, the figure that describes of the actual correction procedural information stored of the procedural information stored of procedural information storage part and actual correction procedural information storage part.
Fig. 7 schematically shows by the related control device of an embodiment of the invention figure that control, that comprise the hot-rolling arrangement of two thermometers.
The specific embodiment
Structure to the related control device of an embodiment of the invention describes.
The structure > > of < < hot-rolling arrangement
Fig. 1 means the structure chart of the structure of the hot-rolling arrangement of being controlled by the related control device of an embodiment of the invention.Arrow in Fig. 1 represents the direction of transfer being transmitted by stocking 200 that will rolling in hot-rolling arrangement (Hot Line).Generally speaking, in the process of stocking 200 rolling in hot-rolling arrangement, be also referred to as slab (slab), pole stock (bar), coiled material, here, unified being called by stocking 200.
As shown in Figure 1, hot-rolling arrangement 100 comprises heating furnace 101, stair oxidation skin cleaning machine 103, thick edging mill 105, roughing mill 107, the wide meter 109 of roughing outlet side plate, roughing outlet side thermometer 111, fine finishining entrance side thermometer 113, cropping machine 115, secondary oxidation skin cleaning machine 117, finishing mill 119, fine finishining outlet side thickness of slab meter 121, multimeter table 123, fine finishining outlet side thermometer 125, flatscope 127, discharging laminar flow (runout laminar spray) cooling end 129, coiling machine entrance side thermometer 131, the wide meter 133 of coiling machine entrance side plate, and coiling machine 135.
Heating furnace 101 is for heating by the stove of stocking 200.
Stair oxidation skin cleaning machine 103 is removed and is heated at the oxide-film being formed by stocking 200 surface because of heating furnace 101 by the above-below direction inject high pressure water from by stocking 200.
From the upper surface direction of Hot Line, 105 pairs of the thick edging mills width by stocking 200 is rolled.
Roughing mill 107 comprises single or multiple frames, to being rolled by the above-below direction of stocking 200.In addition, according to the viewpoint that prevents degradation at temperature, roughing mill 107 need to make line length shorter, and need to be rolled at mulitpath (back and forth movement on direction of transfer), thereby mostly comprise reversible mill, forms.In addition, roughing mill 107 comprise for to as half-finished by stocking 200 inject high pressure water to remove the descaler of surperficial oxide-film.Owing to being at high temperature rolled, therefore easily form oxide-film, need suitably to use for removing the device of such oxide-film.
The wide meter 109 of roughing outlet side plate is measured wide as the half-finished plate by stocking 200 in the operation of rolling.
Roughing outlet side thermometer 111 is measured half-finished by the surface temperature of stocking 200 as in the operation of rolling.
Because the distance between roughing mill 107 and finishing mill 119 is longer, therefore, fine finishining entrance side thermometer 113 measure be positioned at finishing mill 119 entrance by the surface temperature of stocking 200.
Cropping machine 115 cuts off the end, front and back by stocking 200.
Because the distance between roughing mill 107 and finishing mill 119 is longer, therefore, secondary oxidation skin cleaning machine 117 is arranged on to the entrance of finishing mill 110, for improve after finish rolling by the surface characteristic of stocking 200, by the above-below direction inject high pressure water from by stocking 200, remove at the oxide-film being formed by stocking 200 surfaces by roughing.
Finishing mill 119 adopts tandems that the roll that multiple row is called as frame is set, by utilizing a plurality of rolls to be rolled along the vertical direction, thereby can obtain target thickness of slab by stocking 200.In order to suppress the formation of oxide-film, the trip temperature of going forward side by side is controlled, and between the frame of this finishing mill 119 and frame, includes sprayer.
Fine finishining outlet side thickness of slab meter 121 measure by finishing mill 119 rollings by the thickness of slab of stocking 200.In order to be controlled in target zone by the thickness of slab of stocking 200, using the thickness of slab value of being measured by this fine finishining outlet side thickness of slab meter 121 as process values the FEEDBACK CONTROL for the depressing position of finishing mill 119.
As a kind of multimeter table (Multi-Channel Gauge) the 123rd of X ray analyzer, following compound analyzer: become the detector of X ray is arranged in by the form of the width of stocking 200, can measure thickness of slab on width and distribute, thereby can utilize an analyzer to measure the various procedures values such as thickness of slab, convex surface (crown), plate be wide.
Fine finishining outlet side thermometer 125 measure by after finishing mill 119 rollings by the surface temperature of stocking 200.Closely related by the formation of the metal structure of the temperature of stocking 200 and product and material, need management to reach suitable temperature.
Flatscope 127 measure by after finishing mill 119 rollings by the flatness of stocking 200.In addition, flatscope 127 comprises a plurality of ccd video cameras, can also measure by the plate of stocking 200 wide.Because the mensuration ratio of precision multimeter table 123 of flatscope 127 wants high, therefore, the wide value of plate that use is measured by flatscope 127 is mostly usingd as the wide value of plate of finishing mill 119 outlet sides.
Discharging laminar flow cooling end 129 is to utilize cooling water cooling to control by the device of the temperature of stocking 200 to being undertaken by stocking 200.To this, except common discharging cooling facility for laminar flow, sometimes also in front and back, comprise forced cooling device.
Coiling machine entrance side thermometer 131 is measured cooled by the surface temperature of stocking 200 by discharging laminar flow cooling end 129.Closely related by the formation of the metal structure of the temperature of stocking 200 and rolled products and material, need management to reach suitable temperature.
The wide meter 133 of coiling machine entrance side plate is measured wide by the cooled plate by stocking 200 of discharging laminar flow cooling end 129.When carrying out normal rolling, due to what be heated to austenite territory, by stocking 200, at discharging laminar flow cooling end 129, be deformed into the tissues such as ferrite, pearlite, therefore, the plate of measuring after distortion is wide.In addition, owing to being about 860 ℃ of left and right at finishing mill 119 outlet sides, coiling machine 135 entrance sides be about 600 ℃ left back, therefore, by measuring under the state more approaching room temperature, can be wide in assay plate under that cause because of linear expansion and the less state of error room temperature.
Coiling machine 125 batches to transmit by stocking 200.
The functional structure > > of < < control device 1
Fig. 2 means the structure chart of the functional structure of the related control device of an embodiment of the invention 1.In addition, in Fig. 2, enumerate multimeter table 123 as the first determination part, flatscope 127 is that example describes as the situation of the second determination part.
As shown in Figure 2, the related control device 1 of an embodiment of the invention comprises procedural information storage part 2, a study storage part 3, control part 4 and actual correction procedural information storage part 5, to it, provide the wide value of plate of being measured by above-mentioned multimeter table 123, and provide the plate of being measured by flatscope 127 wide value.
Procedural information storage part 2 using the wide value of the plate as the first process values being determined by multimeter table 123, the wide value of the plate as the second process values being determined by flatscope 127, represent to determine the wide value of these plates the moment mensuration time information and represent that by abnormity detection portion 12 described later, detecting the abnormality detection time information in the abnormal moment is associated, and store as procedural information.
Fig. 3 means the figure of an example of the procedural information of storage in the included procedural information storage part 2 of the related control device 1 of an embodiment of the invention.
As shown in Figure 3, at each, measure t (label 201) constantly, using the wide value of the plate as the first process values (label 202) being determined by multimeter table 123, the wide value of the plate as the second process values (label 203) being determined by flatscope 127 with represent whether abnormity detection portion 12 described later detects abnormal error code (abnormality detection time information) (label 204) and be associated, and store as procedural information.At this, when error code (abnormality detection time information) is " 1 ", represent that abnormity detection portion 12 detects extremely, when error code is " 0 ", represent that abnormity detection portion 12 does not detect extremely.
The study item that 3 storages of a study storage part are calculated by a study calculating part 13 described later.
Fig. 4 means the figure of an example of the study item of storage in the included study item storage part 3 of the related control device 1 of an embodiment of the invention.
As shown in Figure 4, in a study storage part 3, to each steel grade A～steel grade C, store a study form 300～500.
A study form 300～500 stores respectively and the wide X of Target Board (1) ... X (m) and target thickness of slab Y (1) ... the study item Z that Y (m) is corresponding.For example, in the study item form 300 of steel grade A, store a study Z
a(m) 1 usings as the study item corresponding with the wide X of Target Board (m) and target thickness of slab Y (1).
Actual correction procedural information storage part 5 does not comprise while representing that abnormity detection portion 12 detects abnormal error code in procedural information, the wide value of the plate being determined by multimeter table 123 is stored as actual correction procedural information, in procedural information, include while representing that abnormity detection portion 12 detects abnormal error code, be chosen in by abnormity detection portion 12 and detect the wide value of the plate being determined by multimeter table 123 in the past of the abnormal moment, with the wide value of revision board being generated by correction portion 14 described later after detecting the abnormal moment by abnormity detection portion 12, and store as actual correction procedural information.
Control part 4 carries out the pass key control of control device 1.In addition, control part 4 comprises procedural information storage control part 11, abnormity detection portion 12, a study calculating part 13, correction portion 14, selection portion 15 and equipment control part 16.
Procedural information storage part 11 by the first process values, the second process values, represent to determine the first process values and the second process values the moment mensuration time information and represent that by abnormity detection portion 12, detecting the abnormality detection time information in the abnormal moment is associated, and store in procedural information storage part 2 as procedural information.
Abnormity detection portion 12 detects the abnormal of multimeter table 123 (the first determination part).Particularly, abnormity detection portion 12 is calculated one by one by the standard deviation of the constant time of stocking 200 or fixed length process values, when this standard deviation is greater than a certain value or be zero, is judged to be and in multimeter table 123 (the first determination part), has occurred extremely.
A study calculating part 13, based on procedural information, calculates for the second process values is revised so that it approaches the study item of the first process values.
Correction portion 14, based on procedural information, is utilized the study item Z being stored by a study storage part 3 to revise the second process values, thereby is generated the wide value of revision board (makeover process value).
Selection portion 15 is based on procedural information, do not comprising while representing that abnormity detection portion 12 detects abnormal error code, the wide value of plate that selection is determined by multimeter table 123, including while representing that abnormity detection portion 12 detects abnormal error code, be chosen in by abnormity detection portion 12 and detect the first process values before the abnormal moment and the wide value of revision board (makeover process value) being generated by correction portion 14 described later after detecting the abnormal moment by abnormity detection portion 12.
The Target Board of equipment control part 16 based on providing from outside is wide, target thickness of slab, steel grade etc. impose a condition and by the selected process values of selection portion 15 and makeover process value, be rolled the control of line.Particularly, heating furnace 101, stair oxidation skin cleaning machine 103, thick edging mill 105, roughing mill 107, cropping machine 115, secondary oxidation skin cleaning machine 117, finishing mill 119, discharging laminar flow cooling end 129 and coiling machine 135 are controlled.
In addition, the setting that equipment control part 16 is implemented for the setting accuracy by stocking 200 of next rolling is uprised is calculated, if for example plate is wide, wide by the plate after the rolling of stocking 200 little with the width difference quantitative change wide desired value of plate in order to make, by each is compared the wide actual value of plate and the wide desired value of plate by stocking 200, thereby implement to set calculating learning functionality, be the wide study of plate.
In this set to calculate learning functionality, will after rolling, carry out that model calculates resulting calculated value and measured value compares, reduce the model error of calculation.This setting is calculated learning functionality and is documented in " theory of plate rolling and reality (plate calendering reason Theory と real Inter) " (civic organization Japan iron and steel institute: in 1984) the 291st page.
In addition, equipment control part 16, being detected by abnormity detection portion 12 when abnormal, also can carry out FEEDBACK CONTROL by the wide value of plate of conduct the second process values being determined by flatscope 127, usings and replaces the wide value of plate as the first process values.
The effect > > of < < control device 1
Fig. 5 means the flow chart of the treatment step of the related control device of an embodiment of the invention 1.In addition, in Fig. 5, enumerate multimeter table 123 as the first determination part, flatscope 127 is that example describes as the situation of the second determination part.
As shown in Figure 5, the study item calculating part 13 of control part 4 judges by the rolling of stocking 200, whether to be completed (step S 101).Particularly, if provide successively from the included heating furnace 101 of hot-rolling arrangement 100 one by one by stocking 200, and batched by coiling machine 135, equipment control part 16 is judged to be by the rolling of stocking 200 and completes.
In step S101, under being judged to be by the completed situation of the rolling of stocking 200 (situation that is), the procedural information (step S103) of storage in a study calculating part 13 readout information storage part 2.
Next, a study calculating part 13 calculates the difference (step S105) of measured value.Particularly, the procedural information of a study calculating part 13 based on reading in step S103, calculates the wide value B of plate being determined by multimeter table 123 at any time
1(the first process values) and the wide value B of the plate being determined by flatscope 127
2(the second process values), and with following (formula 1) calculated difference δ.
δ=B
1-B
2(formula 1)
Next, a study calculating part 13 calculates study (step S 107).Particularly, study calculating part 13 from a study storage part 3, extract with in step S101, completed rolling by the corresponding study item of the steel grade of stocking 200, the wide X of Target Board and target thickness of slab Y, usingd as on the study item Z that once calculates during rolling
n-1.Then, study calculating part 13 utilizes the value of delta that calculates in step S105 and following formula 2, and the study item Z calculating during to last rolling by exponential smoothing carries out smoothing, thereby calculates the study item Z making new advances
n.In addition, in formula 2, by Z
n-1the study item, the Z that during as last rolling, calculate
nthe study item calculating during as this rolling carries out mark.
Z
n=(1-β) Z
n-1+ β δ (formula 2)
At this, β is study gain, and scope is 0～1.0.Although this study gain beta more approaches 1.0, pace of learning is faster, is easily subject to the impact of exceptional value, is conventionally mostly made as 0.3～0.4 left and right.
Then, a study calculating part 13 stores the study item Z calculating in a study storage part 3 (step S109) into.Particularly, in the study item form that a study calculating part 13 is stored at a study storage part 3, utilize the study item Z calculating in step S107
ncover with in step S101, completed rolling by the corresponding study item Z of the steel grade of stocking 200, the wide X of Target Board and target thickness of slab Y
n-1.
Next, the correction portion 14 of control part 4 generates makeover process value (step S111).Particularly, the procedural information that correction portion 14 is stored based on procedural information storage part 2, by following formula 3, utilizes the study item Z being stored by a study storage part 3 to the wide value B of the plate being determined by flatscope 127
2revise, thereby generate the wide value of the revision board B as makeover process value
2 cOMP.
B
2 comp=B
2+ Z (formula 3)
Next, the selection portion 15 of control part 4 is judged in the process being rolled by stocking 200 that has completed rolling in to step S101, whether multimeter table 123 (the first determination part) abnormal (step S113) occurred.Particularly, selection portion 15 is that store at procedural information storage part 2, with in step S101, completed being existed in the error code that procedural information comprised corresponding to stocking 200 (abnormality detection time information) of rolling when the data of " 1 " are shown, be judged to be multimeter table 123 and occurred extremely.
When be judged to be multimeter table 123 in step S113, (no situation) when abnormal do not occur, selection portion 15 is selected the wide value of plate being determined by multimeter table 123 (the first determination part).Particularly, selection portion 15 that store from procedural information storage part 2, with step S101, completed rolling by the wide value of plate (step S115) of selecting in procedural information corresponding to stocking 200 to be determined by multimeter table 123.
On the other hand, when be judged to be multimeter table 123 (the first determination part) in step S113, (situation that is) when abnormal occurred, selection portion 15 is chosen in the wide value of the plate being determined by multimeter table 123 that detects before the abnormal moment and the wide value of the revision board being generated by correction portion 14 (step S117) after detecting the abnormal moment.
For example, in the example of Fig. 3, if at time t201 be the moment of " 00:10:10 ", the value of error code 204 has become " 1 " from " 0 ", selection portion 15 is chosen time t201 for the wide value of the plate being determined by multimeter table 123 till moment of " 00:10:10 ", and, the later wide value of the revision board being generated by correction portion 14 of the moment that select time t201 is " 00:10:10 ".
Next, selection portion 15 using the wide value of the plate being determined by multimeter table 123 of selecting in step 115 or in step S117, select detecting the wide value of the plate being determined by multimeter table 123 before the abnormal moment and detecting the abnormal moment after the wide value of the revision board being generated by correction portion 14 as actual correction procedural information, be stored in actual correction procedural information storage part 5 (step S119).
Fig. 6 be in the related control device 1 of an embodiment of the invention, the figure that describes of the actual correction procedural information stored of the procedural information stored of procedural information storage part 2 and actual correction procedural information storage part 5.
Shown in Fig. 6 601 represents the wide value of plate being determined by multimeter table 123, and 602 represent the wide value of plate being determined by flatscope 127, and 603 represent the wide value of revision board being generated by correction portion 14.
As shown in Figure 6, the difference of the wide value of plate being determined respectively by multimeter table 123 and flatscope 127 constantly of the t1 based on as any time, calculates the study item Z for the wide value of the plate being determined by flatscope 127 is revised.
Then, because the wide value of plate constantly being determined by multimeter table 123 at t2 becomes steady state value, therefore, being judged to be standard deviation is zero, can be judged to be at t2 after the moment, and multimeter table 123 has occurred extremely.Therefore, the selection portion 15 of control part 4 is chosen in by abnormity detection portion 12 and detects the former wide value 601 of the plate being determined by multimeter table 123 of the abnormal t2 moment and by abnormity detection portion 12, detected the revision board that by correction portion 14 the generated wide value 603 of abnormal t2 after the moment, and is stored in actual correction procedural information storage part 5 as actual correction procedural information.
Thus, even occurred when abnormal, also can store and not make it change suddenly measured value at multimeter table 123.
As mentioned above, the control device 1 related according to an embodiment of the invention, owing to comprising: multimeter table 123 (the first determination part), this multimeter table 123 is measured the wide value of plate (process values) on the roll line being rolled by stocking 200 (hot-rolling arrangement) as the first process values; Flatscope 127 (the second determination part), this flatscope 127 using on roll line (hot-rolling arrangement) with the congener process values of the first process values be that the wide value of plate is measured as the second process values; Abnormity detection portion 12, this abnormity detection portion 12 detects the abnormal of multimeter table 123 (the first determination part); Procedural information storage part 2, this procedural information storage part 2 by the first process values, the second process values, represent to determine the first process values and the second process values the moment mensuration time information and represent that by abnormity detection portion 12, detecting the abnormality detection time information in the abnormal moment is associated, and store as procedural information; A study calculating part 13, this study calculating part 13, based on procedural information, calculates for the second process values is revised so that it approaches the study item of the first process values; A study storage part 3,3 couples of study item Z that calculated by a study calculating part 13 of this study storage part store; Correction portion 14, this correction portion 14, based on procedural information, is utilized the study item Z being stored by a study storage part 3 to revise the second process values, thereby is generated the wide value of revision board (makeover process value); Selection portion 15, this selection portion 15, based on procedural information, is chosen in by abnormity detection portion 12 and detects the first former process values of the abnormal moment and the wide value of revision board (makeover process value) after detecting the abnormal moment by abnormity detection portion 12; And equipment control part 16, this equipment control part 16 is based on by the selected process values of selection portion 15 and makeover process value, roll line is controlled, therefore, even occurred when abnormal, also can suitably continue hot-rolling arrangement 1 control and do not make measured value change suddenly at multimeter table 123 (the first determination part).
In addition, although in the related control device 1 of an embodiment of the invention, calculate the study item Z making new advances by exponential smoothing, be not limited to this.
For example, can utilize target thickness of slab, Target Board is wide, alloy species etc. as the Layered Learning method of hierarchical key or using congener measured value and poor δ as the related learning method of the neutral net of designation data.
In addition, although in the related control device 1 of an embodiment of the invention, using multimeter table 123 as the first determination part, using flatscope 127 as the second determination part, be not limited to this.
For example, also can be using flatscope 127 as the first determination part, using multimeter table 123 as the second determination part, also can be using flatscope 127 as the first determination part, using the wide meter 133 of coiling machine entrance side plate as the second determination part.
In addition, it is wide that the process values of measuring is not limited to plate, also can be using the temperature being determined by roughing outlet side thermometer 111, fine finishining entrance side thermometer 113, fine finishining outlet side thermometer 125 or coiling machine entrance side thermometer 131 as process values, also can be using the thickness of slab value being determined by fine finishining outlet side thickness of slab meter 121 as process values.
That is, so-called the first determination part and the second determination part, so long as be arranged on the analyzer of the mensuration class process value of the same race on hot-rolling arrangement 100 (roll line).
In addition,, although in the related control device 1 of an embodiment of the invention, calculate the difference of the wide value of plate being determined respectively by multimeter table 123 and flatscope 127 at any time, be not limited to this.
For example, also can calculate the wide value of plate being determined by multimeter table 123 mean value, with the difference of the mean value of the wide value of plate that determined by flatscope 127.In addition, also can comprise two thermometers, the difference of the temperature that two thermometers of calculating on the position with respect to identical by the position relationship of stocking 200 cardinal principle determine respectively.
Fig. 7 is the figure that schematically shows the hot-rolling arrangement that includes two thermometers.
As shown in Figure 7, include the first fine finishining outlet side thermometer 140 and the second fine finishining outlet side thermometer 141.
And, study calculating part 17 based on by the first fine finishining outlet side thermometer 140 and the second fine finishining outlet side thermometer 141 with respect to by the position relationship of stocking 200 temperature that identical position determines respectively substantially, calculated difference.For example, study calculating part 17 based on by the transfer rate of stocking 200 and on by stocking 200 with the temperature in the place of front end S spaced a predetermined distance from by stocking 200, calculated difference.
Then, the difference that study calculating part 13 can also be based on calculating, calculates the study item Z for the temperature being determined by the second fine finishining outlet side thermometer 141 is revised.
In addition, although in the related control device 1 of an embodiment of the invention, calculate the difference of the wide value of plate being determined respectively by multimeter table 123 and flatscope 127, be not limited to this, also can ratio calculated.Particularly, the plate wide value B of a study calculating part 13 based on being determined by multimeter table 123
1with the wide value B of the plate being determined by flatscope 127
2, utilize following (formula 4), ratio calculated φ.
φ=B
1/ B
2(formula 4)
Then, in the situation that a study calculating part 13 calculates ratio psi, a study calculating part 13 utilizes the ratio psi that calculates and following formula 5, and the study item Z calculating during to last rolling by exponential smoothing carries out smoothly, thus the study item Z that calculating makes new advances
n.In addition, in formula 5, by Z
n-1the study item, the Z that during as last rolling, calculate
nthe study item calculating during as this rolling carries out mark.
Z
n=(1-β) Z
n-1+ β φ (formula 5)
In addition, the procedural information that the correction portion 14 of control part 4 is stored based on procedural information storage part 2, by following formula 6, utilizes the study item Z being stored by a study storage part 3 to the wide value B of the plate being determined by flatscope 127
2revise, thereby generate the wide value of the revision board B as makeover process value
2 cOMP.
B
2 comp=B
2* Z (formula 6)
Industrial practicality
As mentioned above, control device involved in the present invention and control method can be for control device and the control methods that rolling is controlled by the hot-rolling arrangement of stocking.
Label declaration
1 ... control device
2 ... procedural information storage part
3 ... a study storage part
4 ... control part
5 ... actual correction procedural information storage part
11 ... procedural information storage control part
12 ... abnormity detection portion
13 ... a study calculating part
14 ... correction portion
15 ... selection portion
16 ... equipment control part
17 ... a study calculating part
100 ... hot-rolling arrangement
101 ... heating furnace
103 ... stair oxidation skin cleaning machine
105 ... thick edging mill
107 ... roughing mill
109 ... the wide meter of roughing outlet side plate
111 ... roughing outlet side thermometer
113 ... fine finishining entrance side thermometer
115 ... cropping machine
117 ... secondary oxidation skin cleaning machine
119 ... finishing mill
121 ... fine finishining outlet side thickness of slab meter
123 ... multimeter table
125 ... fine finishining outlet side thermometer
127 ... flatscope
129 ... discharging laminar flow cooling end
131 ... coiling machine entrance side thermometer
133 ... the wide meter of coiling machine entrance side plate
135 ... coiling machine
140 ... the first fine finishining outlet side thermometer
141 ... the second fine finishining outlet side thermometer
Claims (8)
1. a control device, is characterized in that, comprising:
The first determination part, this first determination part is measured the process values on the roll line being rolled by stocking as the first process values;
The second determination part, this second determination part is using measuring as the second process values with the congener process values of described the first process values on described roll line;
Abnormity detection portion, this abnormity detection portion detects the abnormal of described the first determination part;
Procedural information storage part, this procedural information storage part by described the first process values, described the second process values, represent to determine described the first process values and described the second process values the moment mensuration time information and represent that by described abnormity detection portion, detecting the abnormality detection time information in the abnormal moment is associated, and store as procedural information;
A study calculating part, this study calculating part, based on described procedural information, calculates for described the second process values is revised so that it approaches the study item of described the first process values;
A study storage part, this study storage part is stored the study item being calculated by a described study calculating part;
Correction portion, this correction portion, based on described procedural information, is utilized the study item of being stored by a described study storage part to revise described the second process values, thereby is generated makeover process value;
Selection portion, this selection portion, based on described procedural information, is chosen in by described abnormity detection portion and detects former described the first process values of the abnormal moment and the described makeover process value after detecting the abnormal moment by described abnormity detection portion; And
Equipment control part, this equipment control part, based on by the selected process values of described selection portion and makeover process value, is controlled described roll line.
2. control device as claimed in claim 1, is characterized in that,
The procedural information that a described study calculating part is stored based on described procedural information storage part, calculate the difference of described the first process values and described the second process values, and described study item during the last rolling of storing based on the described difference calculating and a described study storage part, by exponential smoothing, calculate new described study, the described new study item calculating is stored in a described study storage part.
3. control device as claimed in claim 1, is characterized in that,
Described abnormity detection portion is calculated the standard deviation of described the first process values, when this standard deviation surpasses preset range or is zero, is judged to be described the first determination part and has occurred extremely.
4. the control device as described in any one of claims 1 to 3, is characterized in that,
A described study calculating part based on by described the first determination part and the second determination part each other with respect to described by the position relationship of stocking the first process values that identical Site Determination goes out substantially and the difference of the second process values, calculate for described the second process values is revised so that it approaches the study item of described the first process values.
5. a control method, is characterized in that, comprising:
The first determination step, this first determination step is measured the process values on the roll line being rolled by stocking as the first process values;
The second determination step, this second determination step is using measuring as the second process values with the congener process values of described the first process values on described roll line;
Abnormality detection step, this abnormality detection step detects the abnormal of described the first determination step;
Procedural information storing step, this procedural information storing step by described the first process values, described the second process values, represent to determine described the first process values and described the second process values the moment mensuration time information and represent that by described abnormity detection portion, detecting the abnormality detection time information in the abnormal moment is associated, and be stored in procedural information storage part as procedural information;
A study calculation procedure, this study calculation procedure, based on described procedural information, is calculated for described the second process values is revised so that it approaches the study item of described the first process values;
A study storing step, this study storing step is stored in the study item being calculated by a described study calculation procedure in a study storage part;
Revise step, this revises step based on described procedural information, utilizes the study item of being stored by a described study storing step to revise described the second process values, thereby generates makeover process value;
Select step, this selects step based on described procedural information, is chosen in by described abnormality detection step and detects described the first process values and the described makeover process value after detecting the abnormal moment by described abnormality detection step in the past of the abnormal moment; And
Equipment is controlled step, and this equipment is controlled step based on by the selected process values of described selection step and makeover process value, and described roll line is controlled.
6. control method as claimed in claim 5, is characterized in that,
The procedural information that a described study calculation procedure is stored based on described procedural information storage part, calculate the difference of described the first process values and described the second process values, and described study item during the last rolling of storing based on the described difference calculating and a described study storage part, by exponential smoothing, calculate new described study, the described new study item calculating is stored in a described study storage part.
7. control method as claimed in claim 5, is characterized in that,
Described abnormality detection step is calculated the standard deviation of described the first process values, when this standard deviation surpasses preset range or is zero, is judged to be described the first determination step and has occurred extremely.
8. the control method as described in any one of claim 5 to 7, is characterized in that,
A described study calculation procedure based on by described the first determination step and the second determination step each other with respect to described by the position relationship of stocking the first process values that identical Site Determination goes out substantially and the difference of the second process values, calculate for described the second process values is revised so that it approaches the study item of described the first process values.
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| JP2011047503A JP5647917B2 (en) | 2011-03-04 | 2011-03-04 | Control apparatus and control method |
| JP2011-047503 | 2011-03-04 |
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| KR101536460B1 (en) * | 2013-12-23 | 2015-07-13 | 주식회사 포스코 | Apparatus and method for controlling width of bar in endless rolling process |
| TWI555588B (en) * | 2015-09-09 | 2016-11-01 | Central monitoring pipe rolling equipment | |
| JP6544219B2 (en) * | 2015-11-30 | 2019-07-17 | オムロン株式会社 | Control device |
| CN105598186B (en) * | 2015-12-30 | 2017-07-18 | 北京首钢自动化信息技术有限公司 | A kind of flatness evaluation system and its method based on the horizontal flatness distribution of strip |
| CN105631231B (en) * | 2016-01-28 | 2018-02-27 | 北京科技大学 | A kind of method being modified to course of hot rolling temperature measured value |
| JP7044175B2 (en) * | 2019-03-26 | 2022-03-30 | 東芝三菱電機産業システム株式会社 | Abnormality judgment support device |
| JP6738466B1 (en) * | 2019-06-28 | 2020-08-12 | Dmg森精機株式会社 | Information processing apparatus, information processing method, and information processing program |
| JP7294233B2 (en) * | 2020-05-15 | 2023-06-20 | Ｊｆｅスチール株式会社 | Width Reduction Load Prediction Method, Width Reduction Load Control Method, and Width Reduction Load Prediction Method Generating Model in Width Reduction Press Machine |
| JP2022107463A (en) * | 2021-01-08 | 2022-07-21 | 株式会社日立製作所 | Plant controller, plant control method, and program |
| CN114789243A (en) * | 2021-01-26 | 2022-07-26 | 上海梅山钢铁股份有限公司 | Online accurate measurement method for width of continuous casting slab |
| CN114247764B (en) * | 2022-01-07 | 2023-03-03 | 鞍钢股份有限公司 | Method for setting descaling of finish rolling inlet of hot-rolled strip steel production line |
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| TWI458572B (en) | 2014-11-01 |
| KR101228647B1 (en) | 2013-01-31 |
| KR20120101268A (en) | 2012-09-13 |
| JP5647917B2 (en) | 2015-01-07 |
| CN102652961A (en) | 2012-09-05 |
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