CN1927483B - Rolling control device and rolling control method - Google Patents

Abstract

The invention is to improve magnetic characteristics and shape quality by simultaneously controlling both of strip temperature and temperature distribution in a width direction of a rolling material and strip shape of the rolling material. A coolant jet command computation unit (51) calculates a widthwise deviation of shape of the rolling material (2) detected by a shape detector (32), and widthwise deviation of temperature distribution of the rolling material detected by a strip temperature distribution detector (41) and obtains a widthwise distribution of coolant jetting level which is a necessary level for coolant jetted from a coolant jet nozzles (9). Then, based on the obtained widthwise distribution of coolant jetting level, control information for the coolant jetting nozzle (9) to jet the coolant is set up, and based on the control information set up, an ON/OFF command for coolant jetting is issued to coolant valves (8).

Description

Rolling control apparatus and rolling control method

Technical field

The present invention relates to the plate shape nearby of the working roll by the tabular calendering material that rolled of control and the rolling control apparatus and the rolling control method of the calender that Temperature Distribution is rolled.

Background technology

In calender in the past, use is set at the SHAPE DETECTION device of calender outlet side and measures the plate shape of rolling material, according to this testing result, by the crooked bending of work roll degree that change of roller, can be according to (the lining: leveling) roll the control of material plate shape of the difference gap about the adjustment working roll.At this moment, by the symmetrical composition of roller control panel shape, revise the asymmetrical shape in the left and right sides by lining.

In addition, such coolants such as rolling oil (cooling agent) and water spray to working roll, so also can implement, and revise the part extension of the calendering material that institute rolled, and the bad control of revising of local shape.That is,, be arranged side by side the injection nozzle of a plurality of ejected coolant along the plate width of the calendering material of working roll, from these injection nozzles to the working roll ejected coolant.At this moment, can be independently the refrigerant injection of each injection nozzle be carried out ON/OFF control.

By the ON/OFF control of ejected coolant, the part of accepting refrigerant injection of working roll, the contraction that is cooled on the other hand, does not receive the part of the injection of cooling agent, owing to the heating that calendering produces is expanded.Therefore, in the part that working roll expands, calendering material unfertile land more extends, and the part of shrinking at working roll, the stretching, extension that can suppress to roll material.That is to say, receive being shaped as to becoming tension direction of calendering material of the part of refrigerant injection, the shape of calendering material that does not receive the part of refrigerant injection becomes direction of extension.

In general, the rolling control apparatus of control panel shape, target setting shape at first, and approach the mode of target shape, the driver of operation element roller and injection nozzle with the detected shape of SHAPE DETECTION device.The ON/OFF of injection nozzle, can set according to the whole bag of tricks, but usually, to the working roll ejected coolant that the calendering material is rolled than the part of target shape elongation, suppress to roll the elongation of material, on the contrary, stop the working roll part ejected coolant that does not have the part of elongation (stretching, extension) to roll to the calendering material, suppress to roll the tensioning of material, and promote its stretching, extension.

Cooling agent originally is for the lubricated of calendering material and working roll (work roller) and make it to cool off the material that sprays, and necessity is sprayed the above cooling agent of ormal weight and be in therefore stable lubricated and cooling when keeping calendering.Thus, former shape control method based on ejected coolant, all for the plate width, so that the mode that the above injection nozzle of certain proportion is put ON, and the ON/OFF pattern of setting injection nozzle.That is, preestablish ratio (ratio of ON), and the nozzle of putting the number of ON ratio based on this is put ON the injection nozzle of plate width integral spray cooling agent.

On the other hand, be known as the calendering of electromagnetic steel plate,, and need plate temperature and Temperature Distribution in the control calendering for the magnetic characteristic that makes iron loss etc. improves at the grain-oriented silicon steel sheet of the iron core that is used for transformer and generator etc. etc.The injection of cooling agent also can be used in the temperature control of the calendering material of this kind occasion.For example: disclose in the patent documentation 1, controlled plate temperature in the calendering, and be controlled to be the technology of fixed temperature according to the flow of cooling agent.

In addition, following technology is disclosed in the patent documentation 2, promptly the calendering material to the positive front of being rolled by working roll or dead astern sprays coolant, thereby the Temperature Distribution of plate width is controlled to be equally, can control calendering material cooling plate shape afterwards thus accurately.

[patent documentation 1] spy opens flat 7-32006 communique

[patent documentation 2] spy opens the 2005-66614 communique

As mentioned above, disclose following technology, promptly in calender in the past, utilized the cooling agent that is intended to roll the lubricated and cooling of material and working roll and uses to come control panel shape and plate temperature.But in these technology in the past, the control of the control of plate shape and plate temperature is controlled respectively.For example: in patent documentation 1, the temperature control of calendering material has been described, the control of palette shape does not mention.In addition, in the patent documentation 2, the Temperature Distribution of plate width of rolling material equally is controlled, but this temperature is controlled to be the control for the plate shape, is not to be the temperature control that improves for the magnetic characteristic that makes electromagnetic steel plate etc.And, to be provided with respectively etc. to the injection nozzle of working roll ejected coolant with to the injection nozzle of calendering material ejected coolant, this controlling organization is comparatively complicated.

In the calendering of electromagnetic steel plate, the plate temperature of the calendering material in the calendering and the Temperature Distribution of sheet material width, to the calendering material that rolled particularly the quality of magnetic characteristic caused very big influence.And, the plate shape of the calendering material that rolled, be the factor of decision product quality etc., its shape defect becomes as breaking and the cause of bending etc., and is also greatly relevant with production stability.That is, in the calendering of electromagnetic steel plate, need a kind of quality that can guarantee to roll the magnetic characteristic of material, and improve the rolling control apparatus and the rolling control method of the quality of shape.

Summary of the invention

Use for reference the problem points of aforesaid technology in the past, purpose of the present invention is, a kind of rolling control apparatus and rolling control method are provided, it increases for the quality of the magnetic characteristic that makes electromagnetic steel plate and the quality of shape, and can be to the plate temperature of calendering material in the calendering and the Temperature Distribution of plate width, and institute be controlled simultaneously by the plate shape of the calendering material after rolling.

The invention provides a kind of rolling control apparatus and rolling control method, to calender, it is characterized in that, described calender possesses at least: working roll, and it rolls the calendering material; Cooling material injection portion, it is set up along described working roll on the plate width of aforementioned calendering material, and sprays cooling material (cooling agent etc.) to described working roll and described calendering material; SHAPE DETECTION portion, its be set at described working roll near, detect the shape of the plate width of described calendering material; The Temperature Distribution test section, its be set at described working roll near, detect the Temperature Distribution of the plate width of described calendering material, described rolling control apparatus, (1) carries out computing by the target shape of the plate width that is set in advance of the shape of the plate width of the detected described calendering material of described SHAPE DETECTION portion and described calendering material, and obtain form variations; (2), and obtain the Temperature Distribution deviation to carrying out computing by the target temperature profiles of the plate width that is set in advance of the Temperature Distribution of the plate width of the detected described calendering material of described Temperature Distribution test section and described calendering material; (3) carry out computing to the form variations obtained by described form variations operational part with by the Temperature Distribution deviation that described Temperature Distribution deviation operational part is obtained, obtain the described cooling material injection of expression portion and should spray plate width degree, that the cooling material sprays degree of cooling material and distribute; (4) distribute based on spray the plate width that cooling material that the degree operational part obtains sprays degree by described cooling material, and set the control information that described cooling material injection portion is used to spray the cooling material; (5) spray the control information that the control information configuration part is set based on described cooling material, and make cooling material jeting instruction to described cooling material injection portion, in order to approach the mode that described target shape and described Temperature Distribution approach described target temperature profiles with described shape, to the described zone of being distinguished, cooling material injection degree with respect to this zone is asked for, described cooling material sprays the degree operational part and constitutes by comprising as lower member: division, it is for the described form variations and the described Temperature Distribution deviation in each zone of being distinguished on the plate width of described calendering material, membership function is according to the rules classified, and determines the value of the membership function of this moment; Fuzzy deduction portion, it asks the certainty factor of this area spray coolant in the described zone of being distinguished of getting it right based on value and predefined consequence rule by the determined membership function of described division; Injection degree operational part, it is based on the certainty factor of being obtained by described fuzzy deduction portion, and the cooling material that calculates about this zone in the described zone of being distinguished sprays degree.

Among the present invention, use the form variations and the Temperature Distribution deviation of the calendering material in the calendering, obtain cooling off the distribution that material sprays the plate width of degree.That is, become the shape that is set in advance and the mode of Temperature Distribution, the injection of the cooling material in the control cooling material injection equipment with calendering shape of material and Temperature Distribution.Thus, owing to can control, the quality of the shape of rolling material and the quality of magnetic characteristic are increased in the mode that preestablishes shape, plate temperature and the Temperature Distribution of rolling material.

Realize a kind of Temperature Distribution that can control the plate temperature and the plate width of the calendering material in the calendering simultaneously, and the rolling control apparatus and the rolling control method of the plate shape of the calendering material after the calendering, thus, the quality of magnetic characteristic of electromagnetic steel plate etc. and the quality of shape are increased.

Description of drawings

Fig. 1 is the figure of the summary configuration example of the calender of the suitable rolling control apparatus of the present invention of expression.

Fig. 2 is the figure of the configuration example of the function square frame of the rolling control apparatus in expression the 1st embodiment.

Fig. 3 is the more detailed explanation schematic diagram of the structure and the work example of the refrigerant injection degree operational part in expression the 1st embodiment.

Fig. 4 is in the 1st embodiment, (a) be the example of the membership function that in sorting mechanism A, is used, (b) be the example of the membership function that in sorting mechanism B, is used, (c) be the example of the membership function that in sorting mechanism C, is used, (d) be the illustration figure of the membership function that in sorting mechanism T, is used.

Fig. 5 is the figure of the example of the consequence rule database in expression the 1st embodiment.

Fig. 6 is the figure of the configuration example of the functional block of the rolling control apparatus in expression the 2nd embodiment.

Fig. 7 is illustrated in to calculate the injection degree α that is caused by form variations in the 2nd embodiment _SiThe time consequence rule database that uses illustration figure.

Fig. 8 is illustrated in to calculate the injection degree α that is caused by the Temperature Distribution deviation in the 2nd embodiment _TiThe time consequence rule database that uses illustration figure.

Fig. 9 determines weighting constant G automatically in the 2nd embodiment _S, G _TThe time membership function that uses illustration figure.

Among the figure: the 1-calender, 2-rolls material, 5, the 5a-rolling control apparatus, 6-depressing position control device, the 8-coolant valve, 9-refrigerant injection nozzle, 31-SHAPE DETECTION roller, 32-SHAPE DETECTION device, 41-plate temperature distribution detector, 51,51a-refrigerant injection ordering calculation portion, 52-rolling velocity ordering calculation portion, 53-mechanical type control instruction operational part, 54-shape/temperature deviation operational part, 55-target shape configuration part, 56-target temperature profiles configuration part, 70, the 71-roller, the 75-working roll, the 76-intermediate calender rolls, 77-backing roll, 511,511a, 511b-refrigerant injection degree operational part, 514,514a-refrigerant injection nozzle control information configuration part, 515-ON ratio operational part, 516-coolant valve control part, 541-form variations operational part, 542-Temperature Distribution deviation operational part, 5115-fuzzy deduction portion, 5116-sprays degree calculating part, 5118-consequence rule database.

The specific embodiment

(the 1st embodiment)

Below, with reference to Fig. 1～Fig. 5 the 1st embodiment of the present invention is suitably explained.Figure 1 shows that the summary configuration example of the calender that is suitable for rolling control apparatus of the present invention.As shown in Figure 1, the 6 segmentation stacks formed by working roll 75, intermediate calender rolls 76 and backing roll 77 of the stack of calender 1.

The inlet side of calender 1 is provided with a plurality of refrigerant injection nozzles 9 that are used for to working roll 75 and calendering material 2 ejected coolant along working roll 75 at the plate width.These refrigerant injection nozzles 9 become following structure, promptly can control the ON/OFF of refrigerant injection by the switching of control coolant valve 8 separately, perhaps, and the emitted dose of the cooling agent that control is ejected.

In addition, in outlet one side of calender 1, be provided with the SHAPE DETECTION roller 31 and the SHAPE DETECTION device 32 of the plate shape that detects calendering material 2, and can measure the plate shape after the calendering.In addition, outlet side one side of calender 1, be provided with the plate temperature distribution detector 41 of the Temperature Distribution of the plate width that is used to measure calendering material 2, this can measure the plate temperature of just having rolled calendering material 2 afterwards and the Temperature Distribution of plate width.

In addition, calender 1 as one of mechanism that mechanically controls the plate shape of rolling material 2, is provided with bending 70,71 on working roll 75 and intermediate calender rolls 76.Bending 70,71 is mainly the shape that can be adapted to roll material 2 and the flexibility of conversion working roll 75.And, also can, on calender 1, on working roll etc. 75, be furnished with hat and circular cone emits, mobile working roller 75 or intermediate calender rolls 76 are controlled shape on the thickness of slab direction.Moreover, also be to design the mechanically mechanism of the flexibility of conversion backing roll 77 as Sendzimir formula calender.

More than, be located at the refrigerant injection nozzle 9 of calender 1, SHAPE DETECTION roller 31, SHAPE DETECTION device 32, plate temperature distribution detector 41, rollers 70,71 etc. are the device that just has been used since can using in the past.

Rolling control apparatus 5, constitute by the computer that on hardware, possesses CPU (Central Processing Unit) and memory, and, on the function by target shape configuration part 55, target temperature branch configuration part 56, shape/temperature deviation operational part 54, mechanical type control instruction operational part 53, functional modules such as rolling velocity ordering calculation portion 52, refrigerant injection ordering calculation portion 51 constitute.Also have, the function of this functional module realizes for carrying out the regulated procedure that is stored in memory by CPU.

The desired value of the plate shape of calendering material 2 by calculating picture etc. by the indication device (not shown) that is attached to rolling control apparatus 5 represented calendering behaviour industry monitoring image and calendering setting, is set in target shape configuration part 55.And the plate temperature of calendering material 2 and the desired value that the plate temperature distributes by same display frame, are set in target temperature branch configuration part 56.

Shape/temperature deviation operational part 54, the desired value of the target shape that will be set by target shape configuration part 55 is compared with the measured value of the plate shape of being measured by SHAPE DETECTION device 32, calculates form variations Δ ε and ask _iAnd, will compare with the plate temperature Determination of distribution value of measuring by plate temperature distribution detector 41, and draw Temperature Distribution deviation delta T by the plate temperature distribution objectives value of target temperature branch configuration part 56 settings simultaneously _iAnd plate temperature deviation delta T.

At this, Δ ε _iAnd Δ T _i, be respectively the form variations and the temperature deviation in the i zone on the plate width, will roll material 2 for example N is cut apart the time.At this moment, N is corresponding with the number of refrigerant injection nozzle 9, and in each the regional corresponding mode with divided calendering material 2 refrigerant injection nozzle 9 is set.That is, the i item zone of calendering material 2 is, accepted the zone of the cooling agent that i item refrigerant injection nozzle 9 sprayed.And, the using method of additional letter i, in this manual, below identical, omit repeat specification.

Mechanical type control instruction operational part 53 is based on form variations Δ ε _i, ask calculation at control information, and the extend information of obtaining exported to this mechanical type shape controlling organization bending 70,71 controlling organizations such as shape such as mechanical type such as grade.And mechanical type control instruction operational part 53 based on the information such as plate width that are set, is asked the control information of calculation at depressing position control device 6, and the control information of asking calculation is outputed to depressing position control device 6.In addition, rolling velocity ordering calculation portion 52 based on plate temperature deviation delta T, asks the rolling velocity of calculating calendering material 2 etc., and will ask the information such as rolling velocity of calculation to output to the rotating driving device (not shown) of stack.

Refrigerant injection ordering calculation portion 51 uses form variations Δ ε _iAnd Temperature Distribution deviation delta T _iAnd plate temperature deviation delta T, and ask the ON/OFF of calculation refrigerant injection, the control information of cooling agents such as coolant flow, and the cooling agent control information of being tried to achieve outputed to coolant valve 8 and refrigerant injection nozzle 9 etc.

So, in the refrigerant injection ordering calculation portion 51 of present embodiment, the plate shape that consider to roll material 2 simultaneously, plate temperature and plate temperature distribute, and control the ON/OFF and the flow of refrigerant injection.Thus, in the present embodiment, can under the situation of the precision of not sacrificing the plate shape of rolling material 2, remain the plate temperature fixing.

Then, with reference to Fig. 2, the structure and the action of refrigerant injection ordering calculation portion 51 is described in detail.At this, Fig. 2 is the figure of the configuration example of the functional module of the rolling control apparatus of expression present embodiment.

As shown in Figure 2, shape/temperature deviation operational part 54 is to be split into form variations operational part 541 and temperature deviation operational part 542 two parts and to constitute.Form variations operational part 541, the desired value of the target shape that will be set by target shape configuration part 55 is compared with the shape data of being measured by SHAPE DETECTION device 32 across SHAPE DETECTION roller 31, comes computing form variations Δ ε _iAnd temperature deviation operational part 542 will be compared by the plate temperature target distribution value of target temperature branch configuration part 56 settings with by the temperature data that plate temperature distribution detector 41 is measured, and come computing Temperature Distribution deviation delta T _iAnd plate temperature deviation delta T.

Refrigerant injection ordering calculation portion 51 constitutes by comprising as lower member: promptly refrigerant injection degree operational part 511, refrigerant injection nozzle control information configuration part 514, put ON ratio operational part 515, coolant valve control part 516.

Refrigerant injection degree operational part 511 is based on the form variations Δ ε that is calculated by form variations operational part 541 _iAnd the Temperature Distribution deviation delta T that calculates by Temperature Distribution deviation operational part 542 _i, and degree α is sprayed in computing _iAt this, spray degree α _iBe the numerical value of the degree of expression i refrigerant injection nozzle 9 cooling agent that should spray.About obtaining the detailed calculating process of this numerical value, explain in addition with Fig. 3.

Yet, in the present embodiment, from the injection of the cooling agent of refrigerant injection nozzle 9, for simply, and the ON/OFF that is designed to only spray control, and the flow-control when not spraying ON.Therefore, for all i (i=1 ..., N) the refrigerant injection nozzle 9, set the ON/OFF control information of refrigerant injection.Set the straightforward procedure of this ON/OFF control information, for example as described below.

At first, spray degree α _iDistinguish by order from big to small.And, extract injection degree α successively out from a bigger side _i, to spraying degree α _iExtract out until the injection degree α that extracts out _iNumber reached cooling agent and put till the ratio of ON.At this, with the injection degree α that is drawn out of _iBe expressed as and extract injection degree α out _j, the injection degree α that will not be drawn out of _iBe expressed as non-extraction and spray degree α _kAnd, will from extract injection degree α out _jThe refrigerant injection of corresponding j refrigerant injection nozzle 9 is put ON, will be from spraying degree α with non-extraction _kThe refrigerant injection of corresponding k refrigerant injection nozzle 9 is put OFF.

In addition, ON ratio operational part 515 uses computings according to the rules such as plate temperature deviation delta T, rolling velocity, asks and calculates the ratio (cooling agent is put the ON ratio) of in N the refrigerant injection nozzle 9 injection being put the injection nozzle of ON.This kind operation method, also can be, cooling agent is put the ON ratio, be defined as the function of many variables of plate temperature deviation delta T and rolling velocity, and calculate this functional value, also can obtain the ON ratio with reference to this data form to respect to plate temperature deviation and rolling velocity and predefined data form stores in the memory.

Secondly, will in refrigerant injection nozzle control information configuration part 514, set, at ON/OFF control information refrigerant injection nozzle 9, refrigerant injection, be input in the coolant valve control part 516 as nozzle ON/OFF information.Coolant valve control part 516 receives the input of this injection nozzle ON/OFF information, to coolant valve 8, and the nozzle ON/OFF that opens or close of output function valve instruction.

At this moment, receive the j coolant valve 8 that nozzle is put the ON instruction, open valve, eject cooling agent from j refrigerant injection nozzle 9.In addition, receive the k coolant valve 8 that nozzle is put the OFF instruction, valve-off, and stop to eject cooling agent from k refrigerant injection nozzle 9.

Fig. 3 is for representing the structure of refrigerant injection degree operational part in the present embodiment and the figure of action in more detail.As shown in Figure 3, refrigerant injection degree operational part 511 by including sorting mechanism A, B, C, T (5111～5114), fuzzy (fuzz) inference portion 5115, sprays degree operational part 5116 and constitutes.

Sorting mechanism A, B, C, T (5111～5114), input form variations Δ ε _i, and based on these data, shape facility is classified.That is, the degree that sorting mechanism A (5111) classification shape stretches, the degree that sorting mechanism B (5112) classification shape data changes on direction of extension in time, sorting mechanism C (5113) classifies to the shape data degree bigger than the data in adjoining zone.In addition, same, sorting mechanism T (5114), input temp distribution bias Δ T _i, and data are corresponding therewith, and the feature of Temperature Distribution is classified.

Being categorized as in sorting mechanism A, B, C, T (5111～5114) utilizes membership function to calculate.Among Fig. 4, (a) be the example of employed membership function in sorting mechanism A, (b) being the example of employed membership function among the sorting mechanism B, (c) is the example of employed membership function in sorting mechanism C, (d) is the example of employed membership function in sorting mechanism T.

In addition, shown in Fig. 4 (a), the value sorting mechanism A (5111) of each function is based on A _i(the form variations Δ ε in=the i zone _i), and calculate ANB, ANS, AZO, APS, five membership functions of APB.These membership functions can be described as and are used for the function of certainty factor of presentation class, be called respectively, A negative big (negative big) (ANB), A negative little (negative small) (ANS), A neutrality (zero) (AZO), A front little (positive small) (APS), A positive big (positive big) is (APB).

In addition, in Fig. 4 (a), the value of each function, A _i≤ a ₁The time, ANB=1, and other functional value is 0.And, if A _iSurpass a ₁, then ANB decrescence, opposite ANS is cumulative; A _i=a ₂The time, ANB=0, ANS=1.In addition, if A _iSurpass a ₂, ANS decrescence, opposite AZO is cumulative; A _i=a ₃The time, ANS=0, AZO=1.Below the value of each function, same such as Fig. 4 (a) shown in.

Equally, in Fig. 4 (b), (c), (d), employed membership function BNB among each comfortable sorting mechanism B (5112), BNS, BZO, BPS, BPB and the membership function CN that in sorting mechanism C (5113), uses, CZO, CP, and the membership function TNB that in sorting mechanism T (5114), uses, TNS, TZO, TPS, TPB is represented.

Turn back to Fig. 3 once more.Sorting mechanism A, B, C, T (5111～5114) in each divided i zone, use form variations Δ ε _iWith Temperature Distribution deviation delta T _iAnd the membership function of above stated specification, and calculate the value ANB of each membership function _i, ANS _i, AZO _i, APS _i, APB _i, and BNB _i, BNS _i, BZO _i, BPS _i, BPB _i, and CN _i, CZO _i, CP _i, and TNB _i, TNS _i, TZO _i, TPS _i, TPB _i

The value that adds up to 20 membership function that calculates like this in each divided i zone, is input in the fuzzy deduction portion 5115.Fuzzy deduction portion 5115 in each divided i item zone, based on the value of the membership function that is transfused to be stored in the consequence rule database 5118 of the fuzzy deduction in the memory in advance, calculates and represents certainty factor NB _i, NS _i, ZO _i, PS _i, PB _iThis calculating is for example carried out according to following method.

Fig. 5 shows the illustration figure of consequence rule database in the present embodiment.As shown in Figure 5, consequence rule database 5118 is for having put down in writing the form of the representative membership function that is set by each membership function that is transfused to.At this, the meaning of " A=" is the membership function being imported into from sorting mechanism A (5111) to fuzzy deduction portion 5115.And, " B=", " C=", the meaning of " T=" also is identical.

Fuzzy deduction portion 5115 according to Next consequence rule, obtains and represents certainty factor (NB _i, NS _i, ZO _i, PS _i, PB _i).

(1) about all combinations of the membership function of the A, the B that are transfused to, C, T,, obtains and represent membership function (NB, NS, ZO, PS, one of them among the PB) separately with reference to consequence rule database 5118.

(2), provide the minimum of a value of the membership function in this combination of membership function of the A, the B that are transfused to, C, T as the value of the representative membership function of being obtained in (1).

(3) about each represent membership function (NB, NS, ZO, PS PB), obtains each of being tried to achieve and represents the maximum of the value of membership function in (2), and is made as and represents certainty factor (NB _i, NS _i, ZO _i, PS _i, PB _i).

For example: in fuzzy deduction portion 5115, the membership function value of next combination is transfused to.

APB＝0.8，APS＝0.2，AZO＝0，ANS＝0，ANB＝0

BPB＝0.4，BPS＝0.6，BZO＝0，BNS＝0，BNB＝0

CP＝1.0，CZO＝0，CN＝0

TPB＝0.7，TPS＝0.3，TZO＝0，TNS＝0，TNB＝0

A, the B of this moment, C, T are combined as

A＝APB(0.8)，B＝BPB(0.4)，C＝CP(1.0)，T＝TPB(0.7)

(annotate: the value of this function of value representation in ().The following description is identical.)。

At this moment, with reference to consequence rule database 5118 (Fig. 5), obtain the value of PB=0.4 according to following rule, described rule is, representing membership function value is PB, and the value of this representative membership function (PB) is the minimum of a value of the functional value imported.

Equally,

For A=APB (0.8), B=BPB (0.4), C=CP (1.0), T=TPS (0.3) obtains PB=0.3;

For A=APB (0.8), B=BPS (0.6), C=CP (1.0), T=TPB (0.7) obtains PB=0.6;

For A=APB (0.8), B=BPS (0.6), C=CP (1.0), T=TPS (0.3) obtains PB=0.3;

For A=APS (0.2), B=BPB (0.4), C=CP (1.0), T=TPB (0.7) obtains PB=0.2;

For A=APS (0.2), B=BPB (0.4), C=CP (1.0), T=TPS (0.3) obtains PB=0.2;

For A=APS (0.2), B=BPS (0.6), C=CP (1.0), T=TPB (0.7), obtain PB=0.2,

For A=APS (0.2), B=BPS (0.6), C=CP (1.0), T=TPS (0.3) obtains PB=0.2.

Moreover, same, about the combination of other all A, B, C, T,, obtain and represent membership function and value thereof with reference to consequence rule database 5118 (Fig. 5).The situation of this example, about other all A, B, the combination of C, T, because for for example A=APB (0.8), B=BPB (0.4), C=CN (0), T=TPS (0.3), because one of them in the value of the membership function that is transfused to is 0, therefore PB=0, no matter therefore this kind of representing membership function how, this functional value is 0.Thus, according to representing certainty factor (NB _i, NS _i, ZO _i, PS _i, PB _i) be the such rule of maximum of functional value separately, NB is arranged _i=NS _i=ZO _i=PS _i=0, and PB _i=0.6.

For all i (i=1 ..., N).Repeat the processing of sorting mechanism A discussed above, B, C, T (5111～5114) and fuzzy deduction portion 5115.

Secondly, spray degree operational part 5116, use the representative certainty factor NB that obtains as described above _i, NS _i, ZO _i, PS _i, PB _i(i=1 ..., N),, calculate injection degree α at i refrigerant injection nozzle 9 according to (formula 1) shown in the next one _iAnd, in (formula 1), ρ _NB, ρ _NS, ρ _ZO, ρ _PS, ρ _PBFor being used for the constant of weighting, for example: as ρ _NB=-2.0, ρ _NS=-1.0, ρ _ZO=0.0, ρ _PS=1.0, ρ _PB=2.0 are predetermined like that.

(formula 1)

${\mathrm{\α}}_i=\frac{{\mathrm{\ρ}}_{\mathrm{NB}}{\mathrm{NB}}_i+{\mathrm{\ρ}}_{\mathrm{NS}}{\mathrm{NS}}_i+{\mathrm{\ρ}}_{\mathrm{ZO}}{\mathrm{ZO}}_i+{\mathrm{\ρ}}_{\mathrm{PB}}{\mathrm{PB}}_i+{\mathrm{\ρ}}_{\mathrm{PS}}{\mathrm{PS}}_i}{\mathrm{\Σ}({\mathrm{NB}}_i+{\mathrm{NS}}_i+{\mathrm{ZO}}_i+{\mathrm{PB}}_i+{\mathrm{PS}}_i)}$ (formula 1)

The injection degree α that uses injection degree operational part 5116 to calculate as described above _i(i=1 ..., N), be transmitted to refrigerant injection nozzle control information configuration part 514, received injection degree α _i(i=1 ..., refrigerant injection nozzle control information configuration part 514 N) as mentioned above, is set the refrigerant injection of which refrigerant injection nozzle 9 is put ON.And, based on its setting, generate injection nozzle ON/OFF information, and the injection nozzle ON/OFF information that generates is input to coolant valve control part 516.Coolant valve control part 516, based on the injection nozzle ON/OFF information that is transfused to, to coolant valve 8, the nozzle ON/OFF that opens or close of input operation valve instructs (with reference to Fig. 2).

As mentioned above, in the present embodiment, for by sorting mechanism A, B, C, T (5111～5114) divided each zone on the plate width of calendering material 2, will be by the plate shape of SHAPE DETECTION device 32 detected calendering materials 2, with feature, as the value of membership function and quantize by the Temperature Distribution of the plate temperature of plate temperature distribution detector 41 detected calendering materials 2 and plate width.And, based on the value of the membership function that is transfused to be stored in the consequence rule database 5118 of the fuzzy deduction portion in the memory in advance, ask and calculate injection degree α _i, described injection degree α _iExpression, in order calendering plate shape of material 2 and plate temperature to be distributed approach the target shape that sets by target shape configuration part 55 and target temperature profiles configuration part 56 and target temperature profiles should to the degree of divided each area spray cooling agent.And based on this injection degree α _i, the ON/OFF of setting refrigerant injection.Thus, in the present embodiment,, can realize simultaneously the control simultaneously that distributes of the plate shape of calendering material 2 and plate temperature according to the injection control of the cooling agent of refrigerant injection nozzle 9.

(the 2nd embodiment)

Then, with reference to Fig. 6～Fig. 9 the 2nd embodiment of the present invention is described.Fig. 6 is the schematic diagram of the structure example of the functional module of the rolling control apparatus in expression the 2nd embodiment.

As shown in Figure 6, rolling control apparatus 5a in the 2nd embodiment, by at the computer of negative CPU of possessing of hardware and memory and constitute, and, function aspects is by target shape configuration part 55, target temperature branch configuration part 56, shape/temperature deviation operational part 54, functional blocks such as the refrigerant injection ordering calculation 51a of portion constitute.Only be the refrigerant injection ordering calculation 51a of portion with the difference of the 1st embodiment.And the structure (with reference to Fig. 1) of the calender 1 of use rolling control apparatus 5a is also identical with the 1st embodiment.Below, represent with same-sign for the inscape identical, and omit the explanation of these functions etc. with the 1st embodiment.

In Fig. 6, the refrigerant injection ordering calculation 51a of portion, it constitutes by comprising as lower member, promptly refrigerant injection degree operational part A (511a), refrigerant injection degree operational part B (511b), refrigerant injection nozzle control information configuration part 514a, put ON ratio operational part 515, coolant valve control part 516.At this, refrigerant injection degree operational part A (511a) adopts identical structure substantially with refrigerant injection degree operational part B (511b), though the diagram of omission, but respectively by comprising and constituting: i.e. sorting mechanism A, B as shown in Fig. 3, C (5111～5113) as the identical structural element of lower member, fuzzy deduction portion 5115, consequence rule database 5118 and the degree of injection operational part 5116.

At this moment, refrigerant injection degree operational part A (511a), input form variations Δ ε _iAnd by with sorting mechanism A, the B of Fig. 3, the sorting mechanism (not shown) that C (5111～5113) is identical, respectively for the degree (SA) of shape stretching, extension, degree (SB), the shape data degree (SC) bigger that shape data changed on the direction that stretches along with the time, to this form variations Δ ε than the data in adjoining zone _iFeature classify.Sorting result is as about as shown in Figure 4 form variations Δ ε _iThe value ANB of 15 membership functions _i, ANS _i, AZO _i, APS _i, APB _i, and BNB _i, BNS _i, BZO _i, BPS _i, BPB _i, and CN _i, CZO _i, CP _iAnd obtained.

Then, refrigerant injection degree operational part A (511a), by the fuzzy deduction portion (not shown) identical,, obtain relevant form variations Δ ε according to consequence rule identical and consequence rule database with the occasion of the 1st embodiment with the fuzzy deduction portion 5115 of Fig. 3 _iRepresentative certainty factor (SNB _i, SNS _i, SZO _i, SPS _i, SPB _i).At this, Fig. 7 is the figure of the example of the consequence rule database of expression use this moment.

In refrigerant injection degree operational part A (511a), for all i (i=1 ..., N) repeat the processing of these sorting mechanisms and fuzzy deduction portion.

Secondly, refrigerant injection degree operational part A (511a), the injection degree operational part (not shown) by identical with the degree of injection operational part 5116 uses the representative certainty factor SNB that had before been obtained _i, SNS _i, SZO _i, SPS _i, SPB _i(i=1 ..., N), and computing formula (2), calculate the injection degree α that causes by form variations at refrigerant injection nozzle 9 _Si(i=1 ..., N).And, in formula (2), ρ _SNB, ρ _SNS, ρ _SZO, ρ _SPS, ρ _SPBFor being used for the constant of weighting, for example: as ρ _SNB=-2.0, ρ _SNS=-1.0, ρ _SZO=0.0, ρ _SPS=1.0, ρ _SPB=2.0 are predetermined like that.

(formula 2)

${\mathrm{\α}}_{\mathrm{Si}}=\frac{{\mathrm{\ρ}}_{\mathrm{SNB}}{\mathrm{SNB}}_i+{\mathrm{\ρ}}_{\mathrm{SNS}}S{\mathrm{NS}}_i+{\mathrm{\ρ}}_{\mathrm{SZO}}{\mathrm{SZO}}_i+{\mathrm{\ρ}}_{\mathrm{PSB}}{\mathrm{SPB}}_i+{\mathrm{\ρ}}_{\mathrm{SPS}}S{\mathrm{PS}}_i}{\mathrm{\Σ}({\mathrm{SNB}}_i+{\mathrm{SNS}}_i+{\mathrm{SZO}}_i+{\mathrm{SPB}}_i+{\mathrm{SPS}}_i)}$ (formula 2)

On the other hand, refrigerant injection degree operational part B (511b), input temp distribution bias Δ T _i, by with sorting mechanism A, the B of Fig. 3, the sorting mechanism (not shown) that C (5111～5113) is identical, for the bigger degree of temperature deviation (TA=Δ T _i), bigger degree (the SB=Δ T of time diffusion of temperature deviation _i/ dt), degree (SC=Δ T that temperature deviation is bigger than the temperature deviation in adjoining zone _i(Δ T _I-1+ Δ T _{I; 1})/2), to this Temperature Distribution deviation delta T _iFeature classify.Sorting result is as form variations Δ ε as shown in Figure 4 _iThe value ANB of 15 membership functions _i, ANS _i, AZO _i, APS _i, APB _i, BNB _i, BNS _i, BZO _i, BPS _i, BPB _i, CN _i, CZO _iAnd CP _i, and obtained.

Then, refrigerant injection degree operational part B (511b) is by the fuzzy deduction portion (not shown) identical with the fuzzy deduction portion 5115 of Fig. 3, according to consequence rule identical with the situation of the 1st embodiment and consequence rule data, to Temperature Distribution deviation delta T _iObtain and represent certainty factor (TNB _i, TNS _i, TZO _i, TPS _i, TPB _i).At this, Fig. 8 is the figure of the example of the consequence rule database of expression use this moment.

In refrigerant injection degree operational part B (511b), to all i (i=1 ..., N) the rerun processing of sorting mechanism and fuzzy deduction portion.

Secondly, refrigerant injection degree operational part B (511b) by the injection degree operational part (not shown) identical with the degree of injection operational part 5116, uses the representative certainty factor TNB that had before been obtained _i, TNS _i, TZO _i, TPS _i, TPB _i(i=1 ..., N), and computing formula (3), calculate at i refrigerant injection nozzle 9, spray degree α _Ti(i=1 ..., N).In addition, in formula (3), ρ _TNB, ρ _TNS, ρ _TZO, ρ _TPS, ρ _TPBBe the constant that is used for weighting, for example: as ρ _TNB=-2.0, ρ _TNS=-1.0, ρ _TZO=0.0, ρ _TPS=1.0, ρ _TPB=2.0 pre-determine like that.

(formula 3)

${\mathrm{\α}}_{\mathrm{Ti}}=\frac{{\mathrm{\ρ}}_{\mathrm{TNB}}{\mathrm{TNB}}_i+{\mathrm{\ρ}}_{\mathrm{TNS}}{\mathrm{TNS}}_i+{\mathrm{\ρ}}_{\mathrm{TZO}}{\mathrm{TZO}}_i+{\mathrm{\ρ}}_{\mathrm{TSB}}{\mathrm{TPB}}_i+{\mathrm{\ρ}}_{\mathrm{TPS}}{\mathrm{TPS}}_i}{\mathrm{\Σ}({\mathrm{TNB}}_i+{\mathrm{TNS}}_i+{\mathrm{TZO}}_i+{\mathrm{TPB}}_i+{\mathrm{TPS}}_i)}$ (formula 3)

Then, the injection degree α that is obtained more than using, cause by form variations _SiWith the injection degree α that causes by the Temperature Distribution deviation _Ti, calculate comprehensive injection degree α by (formula 4) _i(i=1 ..., N), and, in (formula 4), G _S, G _TBe weighting constant.This weighting constant G _S, G _T, as described later shown in, use form variations Δ ε _iWith Temperature Distribution deviation delta T _iAnd the evaluation function of computational rules, and can manually or automatically carry out suitable change based on this value.

(formula 4)

α _i=G _Sα _Si+ G _Tα _Ti(formula 4)

Secondly, refrigerant injection nozzle control information configuration part 514a is according to comprehensive injection degree α _iAnd put the ON ratio to put the cooling agent that ON ratio operational part 515 generates, for each i (i=1 ..., N) the refrigerant injection nozzle 9, generate the ON/OFF control information (injection nozzle ON/OFF information) of refrigerant injection.The injection nozzle ON/OFF information that is generated is input to coolant valve control part 516.Coolant valve control part 516, based on the injection nozzle ON/OFF information that is transfused to, to coolant valve 8, the injection nozzle ON/OFF that opens or close of input operation valve instruction.

As mentioned above, in the 2nd embodiment,, can roll the plate shape of material 2 and plate temperature simultaneously and distribute and control according to injection control from the cooling agent of refrigerant injection nozzle 9.And, by with the weighting constant G in the formula (4) _S, G _TSuitable change can be regulated the influence degree of the plate shape that the injection of cooling agent is controlled and the influence degree that the plate temperature distributes.

And, by manually or automatically to weighting constant G in the formula (4) _S, G _TThe method of change, as described below.

Refrigerant injection nozzle control information configuration part 514a uses form variations Δ ε _iWith Temperature Distribution deviation delta T _i, calculate the evaluation function J as shown in formula (5).At this, W _ShapeAnd W _Temp, be respectively form variations Δ ε _iWith Temperature Distribution deviation delta T _iWeighting constant, Δ T _AveBe Temperature Distribution deviation delta T _iMean value, and, i _MinBe 2～3 numbers such as grade, i _MaxBe the number of N-1, N-2 etc., remove and calculate evaluation function J outside the influence of rolling material 2 two ends.

$J=W_{\mathrm{Shape}}\underset{i_{\min }}{\overset{i_{\max }}{\mathrm{\Σ}}}{\left({\mathrm{\Δ\ϵ}}_i\right)}^2/(i_{\max }-i_{\min }+1)-W_{\mathrm{Temp}}\underset{i_{\min }}{\overset{i_{\max }}{\mathrm{\Σ}}}{({\mathrm{\ΔT}}_i-{\mathrm{\ΔT}}_{\mathrm{ave}})}^2/(i_{\max }-i_{\min }+1)$ (formula 5)

At this moment, the value of evaluation function J is at form variations Δ ε _iThe big situation of influence under, be positive number, at Temperature Distribution deviation delta T _iThe big situation of influence under, be negative.Therefore, according to the value of evaluation function J, can be by manually determining weighting constant G _S, G _TValue.

In addition, determine weighting constant G automatically _S, G _TThe time, for example: shown in Figure 9, at first set weighting constant G at the value of evaluation function J _S, G _TMembership function.That is, refrigerant injection nozzle control information configuration part 514a calculates after the evaluation function J, calculates weighting constant G with the value of this J _S, G _TMembership function, and with the value of resulting each membership function, as weighting constant G _S, G _TValue.

And in Fig. 9, solid line is weighting constant G _SMembership function, line expression weighting constant G little by little _TMembership function.These membership functions are represented with broken line, but if are satisfied G _S+ G _T=1, also can be the function of representing with curve.And, at this evaluation function J, be form variations Δ ε _iWith Temperature Distribution deviation delta T _iAverage poor of 2 powers, but so long as can compare the function of the size of the size of form variations and temperature deviation, use which type of function can.

As mentioned above, refrigerant injection nozzle control information configuration part 514a calculates evaluation function J, and calculates weighting constant G according to the value of this J _S, G _TMembership function, even without the intervention of craft, also can obtain weighting constant G thus _S, G _TValue.

And, more than shown in the rolling control apparatus 5 in the 1st and the 2nd embodiment, 5a is applicable to, plate temperature distribution detector 41 and SHAPE DETECTION roller 31 are set at the calender that side of stack, but also can be suitable for for the calender of going into side that at least one side of plate temperature distribution detector 41 and SHAPE DETECTION roller 31 is set at stack.

Claims (8)

1. rolling control apparatus, it is characterized in that at calender,

Described calender possesses at least:

Working roll, it rolls the calendering material;

Cooling material injection portion, it is set up along described working roll on the plate width of aforementioned calendering material, and sprays the cooling material to described working roll and described calendering material;

SHAPE DETECTION portion, its be set at described working roll near, detect the shape of the plate width of described calendering material;

The Temperature Distribution test section, its be set at described working roll near, detect the Temperature Distribution of the plate width of described calendering material,

Described rolling control apparatus possesses:

The form variations operational part, it is to carrying out computing by the target shape of the plate width that is set in advance of the shape of the plate width of the detected described calendering material of described SHAPE DETECTION portion and described calendering material, and obtains form variations;

Temperature Distribution deviation operational part, it is to carrying out computing by the target temperature profiles of the plate width that is set in advance of the Temperature Distribution of the plate width of the detected described calendering material of described Temperature Distribution test section and described calendering material, and obtains the Temperature Distribution deviation;

The cooling material sprays the degree operational part, it carries out computing to the form variations obtained by described form variations operational part with by the Temperature Distribution deviation that described Temperature Distribution deviation operational part is obtained, and obtains the described cooling material injection of expression portion and should spray plate width degree, that the cooling material sprays degree of cooling material and distribute;

The cooling material sprays the control information configuration part, and it distributes based on sprayed plate width that cooling material that the degree operational part obtains sprays degree by described cooling material, and sets the control information that described cooling material injection portion is used to spray the cooling material;

Cooling material jeting instruction portion, it sprays the control information that the control information configuration part is set based on described cooling material, and makes cooling material jeting instruction to described cooling material injection portion,

Described cooling material sprays the degree operational part and constitutes by comprising as lower member:

Division, it is for the described form variations and the described Temperature Distribution deviation in each zone of being distinguished on the plate width of described calendering material, and membership function is according to the rules classified, and determines the value of the membership function of this moment;

Fuzzy deduction portion, it asks the certainty factor of this area spray coolant in the described zone of being distinguished of getting it right based on value and predefined consequence rule by the determined membership function of described division;

Injection degree operational part, it is based on the certainty factor of being obtained by described fuzzy deduction portion, and the cooling material that calculates about this zone in the described zone of being distinguished sprays degree,

Thereby approach the mode that described target shape and described Temperature Distribution approach described target temperature profiles with described shape, to the described zone of being distinguished, ask for respect to the cooling material injection degree in this zone.

2. rolling control apparatus according to claim 1 is characterized in that,

Constitute as follows:

Promptly based on described form variations and described Temperature Distribution deviation, and obtain the value of the evaluation function of regulation, and according to the value of this evaluation function, the weighting constant when determining to adopt described weighted average.

3. rolling control apparatus according to claim 1 is characterized in that,

Constitute as follows:

Promptly spray in the degree computing, independently obtain respectively, spray degree based on the cooling material of described form variations at described cooling material, and based on the cooling material injection degree of described Temperature Distribution deviation,

And adopt, described that independently obtain, spray degree and the weighted average of spraying degree based on the cooling material of described Temperature Distribution deviation based on the cooling material of described form variations.

4. rolling control apparatus according to claim 3 is characterized in that,

Constitute as follows:

Promptly based on described form variations and described Temperature Distribution deviation, and obtain the value of the evaluation function of regulation, and according to the value of this evaluation function, the weighting constant when determining to adopt described weighted average.

5. rolling control method, it is characterized in that at calender,

Described calender possesses at least:

Working roll, it rolls the calendering material;

Cooling material injection portion, it is set up along described working roll on the plate width of aforementioned calendering material, and sprays the cooling material to described working roll and described calendering material;

SHAPE DETECTION portion, its be set at described working roll near, detect the shape of the plate width of described calendering material;

The Temperature Distribution test section, its be set at described working roll near, detect the Temperature Distribution of the plate width of described calendering material,

The rolling control apparatus that described calender is controlled is carried out following steps:

The form variations calculation step wherein to carrying out computing by the target shape of the plate width that is set in advance of the shape of the plate width of the detected described calendering material of described SHAPE DETECTION portion and described calendering material, and is obtained form variations;

Temperature Distribution deviation calculation step, wherein to carrying out computing, and obtain the Temperature Distribution deviation by the target temperature profiles of the plate width that is set in advance of the Temperature Distribution of the plate width of the detected described calendering material of described Temperature Distribution test section and described calendering material;

The cooling material sprays the degree calculation step, wherein form variations of obtaining and the Temperature Distribution deviation of obtaining are carried out computing in described form variations calculation step, obtain plate width distribution degree, cooling material injection degree that the cooling material should spray in the described cooling material injection of expression portion in described Temperature Distribution deviation calculation step;

The cooling material sprays control information and sets step, wherein distributes based on spray the plate width that the cooling material of being obtained in the degree calculation step sprays degree at described cooling material, and sets the control information that described cooling material injection portion is used to spray the cooling material;

Cooling material jeting instruction step is wherein set the control information that sets in the step based on spraying control information at described cooling material, and makes cooling material jeting instruction to described cooling material injection portion,

Described cooling material injection degree calculation step comprises following steps and constitutes:

Classification step, wherein for the described form variations and the described Temperature Distribution deviation in each zone of being distinguished on the plate width of described calendering material, membership function is according to the rules classified, and determines the value of the membership function of this moment;

The fuzzy deduction step wherein based on value and predefined consequence rule by the determined membership function of described classification step, is asked the certainty factor of this area spray coolant in the described zone of being distinguished of getting it right;

Injection degree calculation step wherein based on the certainty factor of being obtained by described fuzzy deduction step, is calculated the cooling material injection degree about this zone in the described zone of being distinguished,

Thereby approach the mode that described target shape and described Temperature Distribution approach described target temperature profiles with described shape, to the described zone of being distinguished, ask for respect to the cooling material injection degree in this zone.

6. rolling control method according to claim 5 is characterized in that,

Described rolling control apparatus is also carried out following steps:

Promptly based on described form variations and described Temperature Distribution deviation, and obtain the value of the evaluation function of regulation, and according to the value of this evaluation function, the weighting constant when determining to adopt described weighted average.

7. rolling control method according to claim 5 is characterized in that,

Described rolling control apparatus is also carried out following steps:

Spray in the degree calculation step at described cooling material, independently obtain respectively, spray degree based on the cooling material of described form variations, and based on the cooling material injection degree of described Temperature Distribution deviation,

And adopt, described that independently obtain, spray degree and the weighted average of spraying degree based on the cooling material of described Temperature Distribution deviation based on the cooling material of described form variations.

8. rolling control method according to claim 7 is characterized in that,

Described rolling control apparatus is also carried out following steps:

Promptly based on described form variations and described Temperature Distribution deviation, and obtain the value of the evaluation function of regulation, and according to the value of this evaluation function, the weighting constant when determining to adopt described weighted average.

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