CN100498622C - Temperature control method, temperature controller, heat treatment device and method - Google Patents
Temperature control method, temperature controller, heat treatment device and method Download PDFInfo
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- CN100498622C CN100498622C CNB2006100014620A CN200610001462A CN100498622C CN 100498622 C CN100498622 C CN 100498622C CN B2006100014620 A CNB2006100014620 A CN B2006100014620A CN 200610001462 A CN200610001462 A CN 200610001462A CN 100498622 C CN100498622 C CN 100498622C
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Abstract
In the present invention, it is easily to perform adjustment work for a setting temperature of each furnace 3<SB>1</SB>-3<SB>3</SB>for performing heat treatment to a glass substrate 2 according to a desired temperature profile in a continuous furnace 3. A temperature change of the glass substrate 2 at each observation point in the continuous furnace 3 when changing the setting temperature of each the furnace 3<SB>1</SB>-3<SB>3</SB>is estimated as a matrix by use of a model, a correction value is calculated such that a temperature of the glass substrate 2 becomes a temperature of the desired temperature profile at each the observation point by use of an inverse matrix of the matrix, and the setting temperature is corrected by the calculated value.
Description
Technical field
The present invention relates to temperature-controlled process, temperature control equipment, the annealing device of serviceability temperature control device and the heat treatment method of use thereof that the temperature of controlling object is controlled, relate in particular to the temperature control technology of the controlling object that is applicable to many input and output interference system.
Background technology
In the past, for example, when glass substrate of being used for FPD (Flat Panel Display) etc. is heat-treated, used the continuous continuous oven of a plurality of thermal treatment zone (for example, with reference to patent documentation 1).
Patent documentation 1: the spy opens the 2003-279256 communique
In the thermal treatment of using described continuous oven, glass substrate etc. is flowed in the continuous in the horizontal direction a plurality of stoves of thermal treatment thing and heat-treat.This thermal treatment need make and be presented at being passed the temperature curve how to change in time by the temperature of thermal treatment thing and becoming desired temperature curve of flowing in the continuous oven, therefore, adjust the design temperature of continuous a plurality of stoves.
In the adjustment of this design temperature etc., though allow the object being treated of test usefulness that temperature sensor has been installed in continuous oven, flow, and its temperature curve of instrumentation, adjust design temperature of each stove etc. for becoming desired temperature curve, but there is following difficult point in this adjustment: owing to rely on those of skill in the art's experience and sensation, because of individual differences produces difference, and owing to make by thermal treatment thing mobile repeatedly adjustment in continuous oven, it is elongated that it adjusts man-hour.
Summary of the invention
The present invention develops in view of above-mentioned technological deficiency, and purpose is for can easily carrying out the adjustment operation for being heat-treated by the thermal treatment thing under desired state.
(1), temperature-controlled process of the present invention is to make when heat-treating when being moved in continuous a plurality of thermal treatment zone by the thermal treatment thing, controls the method for temperature of each thermal treatment zone.By the temperature difference between the temperature of the temperature of thermal treatment thing and desired temperature curve, calculate at least one offset of the target temperature that is used for compensating above-mentioned thermal treatment zone and detected temperatures according to above-mentioned.
So-called thermal treatment is to heat and/or cool off.So-called thermal treatment zone is the interval (scope) of heat-treating.In this thermal treatment zone, at least a heating arrangement and/or cooling device preferably are set, preferably each thermal treatment zone is carried out temperature control respectively.
Each thermal treatment zone in continuous a plurality of thermal treatment zone can form in the horizontal direction continuously, also can form continuously by in the vertical direction.
Above-mentioned same when heat-treating by the temperature of thermal treatment thing, preferably make above-mentioned by the temperature of thermal treatment thing instrumentation when above-mentioned a plurality of thermal treatment zone move, also can be used as before the thermal treatment by the initial stage temperature of thermal treatment thing.
Above-mentioned offset preferably makes above-mentioned value of being dwindled as far as possible by the temperature difference between the temperature of the temperature of thermal treatment thing and desired temperature curve.
According to the present invention, according to by the temperature difference between the temperature of the temperature of thermal treatment thing and desired temperature curve, calculate and be used for compensating at least one offset of target temperature (design temperature) and detected temperatures (input temp), therefore can be unlike the prior art wrong adjustment that carry out target temperature (design temperature) etc. with attempting, and carry out the adjustment of target temperature or detected temperatures with the offset of calculating.
(2), in an embodiment of temperature-controlled process of the present invention, above-mentioned by the said temperature of thermal treatment thing preferably make above-mentioned by the instrumentation temperature at thermal treatment thing a plurality of observation stations place of instrumentation when above-mentioned a plurality of thermal treatment zone move.
So-called observation station is in a plurality of thermal treatment zone, is used to observe the point by the temperature of thermal treatment thing, that is: in a plurality of thermal treatment zone, be used for observed temperature by the position of thermal treatment thing.This observation station preferably makes by the temperature consistent necessity high point of the temperature of thermal treatment thing with desired temperature curve.
According to present embodiment, because according to moving in a plurality of thermal treatment zone a plurality of observation stations place of instrumentation by the temperature difference between the temperature of the instrumentation temperature of thermal treatment thing and desired temperature curve, calculate offset, therefore compare with using, can carry out high-precision compensation by the initial stage temperature of thermal treatment thing etc.
(3), in the embodiment of above-mentioned (2), comprising: the 1st step, makes and above-mentionedly moved and heat-treat in above-mentioned a plurality of thermal treatment zone, and instrumentation should be by the temperature of thermal treatment thing by the thermal treatment thing; The 2nd step, according to instrumentation by the temperature of thermal treatment thing, obtain above-mentioned when above-mentioned target temperature is changed by the interference degrees between the thermal treatment zone at above-mentioned a plurality of observation stations place of thermal treatment thing; The 3rd step according to the interference degrees of obtaining, is calculated above-mentioned offset.
So-called interference degrees is when the target temperature that makes thermal treatment zone changes, since the interference between each thermal treatment zone, the effect that is subjected to by the temperature of thermal treatment thing at the observation station place.For example, be meant when allowing the target temperature of certain thermal treatment zone change since with the interference of continuous other thermal treatment zone of heat, and the effect that the temperature by the thermal treatment thing at the observation station place is subjected to.
The degree of this interference can be carried out actual instrumentation and be obtained, but preferred use contained thermal treatment zone and inferred by the model of thermal treatment thing.
According to present embodiment, when target temperature is changed, the affected degree of the temperature by the thermal treatment thing at each observation station place, that is: the temperature variation by the thermal treatment thing at each observation station place that will be corresponding with the temperature variation of target temperature is obtained in advance as interference degrees, thereby according to this interference degrees, make temperature variation become the temperature of desired temperature curve, therefore can be worth by way of compensation and obtain making target temperature carry out temperature variation how by the thermal treatment thing at each observation station place.Therefore, by using this offset compensation target temperature or detected temperatures, compensation is used for desired temperature curve the target temperature of being heat-treated by the thermal treatment thing or the adjustment operation of detected temperatures being become easy.
(4), in the embodiment of above-mentioned (3), can also comprise: the 4th step according to the above-mentioned offset of calculating, compensates at least one in above-mentioned target temperature and the above-mentioned detected temperatures.
According to present embodiment, can compensate at least one in detected temperatures and the target temperature automatically according to the above-mentioned offset of calculating.
(5), in the embodiment of above-mentioned (3) or (4), in the 2nd step, according to instrumentation by the temperature of thermal treatment thing, obtain the expression temperature variation of above-mentioned target temperature and above-mentioned by the matrix of the relation of the temperature variation at above-mentioned a plurality of observation stations place of thermal treatment thing; In the 3rd step, also can use above-mentioned inverse of a matrix matrix to calculate above-mentioned offset.
According to present embodiment, use obtain in the 2nd step, the expression target temperature variation and by the inverse of a matrix matrix that concerns between the temperature variation at a plurality of observation stations place of thermal treatment thing, obtain offset, pass through to use this offset compensation target temperature or detected temperatures thus, there is no need operator's adjustment as prior art with will carrying out the mistake trial.
(6), in the embodiment of above-mentioned (5), in above-mentioned the 2nd step, also can according to the target temperature of thermal treatment zone and instrumentation by the temperature of thermal treatment thing, set up and contain thermal treatment zone and, use the model of being set up to obtain above-mentioned matrix by the model of thermal treatment thing.
According to present embodiment, use contains thermal treatment zone and by the model of thermal treatment thing, obtain the temperature variation of expression target temperature and by the matrix that concerns between the temperature variation at a plurality of observation stations place of thermal treatment thing, in fact do not need to make respectively the target temperature of thermal treatment zone to change thus and come instrumentation by the temperature variation at a plurality of observation stations place of thermal treatment thing.
(7), temperature control equipment of the present invention, comprising: temperature regulator, making by the thermal treatment thing in the thermal treatment that continuous a plurality of thermal treatment zone are carried out while moving, control the temperature of each thermal treatment zone; Compensation system by the temperature difference between the temperature of the temperature of thermal treatment thing and desired temperature curve, is calculated offset according to above-mentioned.The said temperature regulator is to control the device of the temperature of above-mentioned thermal treatment zone according to the target temperature of above-mentioned thermal treatment zone and detected temperatures, and according to above-mentioned offset, compensates at least one in above-mentioned target temperature and the above-mentioned detected temperatures.
Compensation system is preferably by formations such as PLC (ProgrammableLogicController) or personal computers.
According to the present invention, according to by the temperature difference between the temperature of the instrumentation temperature of thermal treatment thing and desired temperature curve, calculate and be used for compensating at least one offset of target temperature and detected temperatures, thereby need not as prior art, carry out the wrong adjustment of attempting ground to target temperature etc., and can carry out the compensation of target temperature or detected temperatures with the offset of calculating.
(8), in an embodiment of temperature control equipment of the present invention, above-mentioned preferably being made by the said temperature of thermal treatment thing above-mentionedly moved and the instrumentation temperature at a plurality of observation stations place of measuring in above-mentioned a plurality of thermal treatment zone by the thermal treatment thing.
According to present embodiment, since according to moving in a plurality of thermal treatment zone a plurality of observation stations place of instrumentation by the instrumentation temperature of thermal treatment thing and, temperature difference between the temperature of desired temperature curve, calculate offset, compare with using thus, can carry out high-accuracy compensation by the initial stage temperature of thermal treatment thing etc.
(9), in the embodiment of above-mentioned (8), the interference degrees of above-mentioned compensation system between also can the thermal treatment zone at above-mentioned a plurality of observation stations place when above-mentioned target temperature is changed, above-mentioned thermal treatment thing calculated above-mentioned offset.
According to present embodiment, because according to interference degrees, can obtain the offset that is used to compensate target temperature or detected temperatures, compensation is used for desired temperature curve the target temperature of being heat-treated by the thermal treatment thing or the adjustment operation of detected temperatures being become easy thus.
(10), in the embodiment of above-mentioned (9), above-mentioned compensation system also can be according to moving at above-mentioned a plurality of processing regions instrumentation by the temperature of thermal treatment thing, obtain the expression temperature variation of above-mentioned target temperature and above-mentioned, use this inverse of a matrix matrix to calculate above-mentioned offset by the matrix of the relation of the temperature variation at above-mentioned a plurality of observation stations place of thermal treatment thing.
According to present embodiment, use the temperature variation of expression target temperature and obtained offset by the matrix of the relation between the temperature variation at a plurality of observation stations place of thermal treatment thing, by using this offset to compensate target temperature or detected temperatures, do not need to adopt as prior art operator's mistake to adjust thus with attempting.
(11), in the embodiment of above-mentioned (10), that above-mentioned compensation system has is that the temperature by the thermal treatment thing according to the target temperature of each thermal treatment zone and instrumentation draws, contain thermal treatment zone and by the model of thermal treatment thing, and can use this model to obtain above-mentioned matrix.
According to present embodiment, use and to contain thermal treatment zone and to be obtained matrix by the model of thermal treatment thing, do not come instrumentation by the temperature variation at a plurality of observation stations place of thermal treatment thing thereby in fact do not need to change by the target temperature that makes thermal treatment zone.
(12), annealing device of the present invention, comprising: temperature control equipment of the present invention; And have continuous a plurality of thermal treatment zone, and carried out temperature controlled apparatus for continous treatment by the said temperature control device.
Apparatus for continous treatment has continuous a plurality of thermal treatment zone, for example, and reflow ovens or continuous calcining stove etc.
According to the present invention, make compensation be used for the target temperature of being heat-treated by the thermal treatment thing or the adjustment operation of detected temperatures being become easy with desired temperature curve.
(13), heat treatment method of the present invention is to make by the thermal treatment thing in the thermal treatment that continuous a plurality of thermal treatment zone are carried out while moving, control the temperature of each thermal treatment zone temperature and control employed heat treatment method.It is carried out as follows by computing machine: the 1st step, input make above-mentioned by the thermal treatment thing above-mentioned a plurality of thermal treatment zone move and in the thermal treatment carried out this of institute's instrumentation by the temperature data of thermal treatment thing; The 2nd step according to the temperature data of the object being treated of being imported, is obtained above-mentioned by the interference degrees between the thermal treatment zone at a plurality of observation stations place of thermal treatment thing when above-mentioned target temperature is changed; The 3rd step according to the above-mentioned interference degree, and above-mentioned by the temperature difference between the temperature of the temperature of thermal treatment thing and desired temperature curve, is calculated the target temperature of the above-mentioned thermal treatment zone of compensation and at least one the offset in the detected temperatures.
According to the present invention, carry out heat treatment method by computing machine, according to the interference degrees of instrumentation in advance, can obtain the offset that is used to compensate target temperature or detected temperatures, compensation is used for the target temperature of heat-treating with desired state of temperature or the adjustment operation of detected temperatures and becomes easy thus.
Heat treatment method of the present invention can be stored in the storage medium that can be read by computing machine, for example floppy disk, hard disk, CD, magneto-optic disk, CD-ROM, tape, Nonvolatile memory card, ROM etc.
As mentioned above according to the present invention, according to by the temperature difference between the temperature of the instrumentation temperature of thermal treatment thing and desired temperature curve, calculate and be used for compensating at least one offset of above-mentioned target temperature and above-mentioned detected temperatures, thereby can unlike prior art, carry out mistake and attempt ground adjustment such as target temperatures, and can use the offset of calculating to carry out the compensation of target temperature or detected temperatures, make the adjustment operation become easy.
Description of drawings
Fig. 1 is the roughly pie graph of the annealing device of one embodiment of the present of invention;
Fig. 2 is the process flow diagram of expression temperature-controlled process of the present invention;
Fig. 3 is the roughly pie graph of expression for the structure of instrumentation temperature curve;
Fig. 4 is the accompanying drawing of expression temperature curve;
Fig. 5 is the accompanying drawing for the medelling of explanation glass substrate;
Fig. 6 is the accompanying drawing of expression temperature curve and observation station;
Fig. 7 is the temperature curve of expression instrumentation and the accompanying drawing of desired temperature curve;
Fig. 8 is the calcspar of temperature regulator;
Fig. 9 is the accompanying drawing corresponding with Fig. 7 of other embodiment of the present invention.
Symbol description
1, annealing device 2, glass substrate
3, continuous oven 4
1～4
3, temperature regulator
7, epigyny device
Embodiment
Below, with reference to the accompanying drawings embodiments of the invention are elaborated.
Embodiment 1
Fig. 1 is the roughly pie graph of the annealing device with temperature regulator of one embodiment of the present of invention.
The annealing device 1 of present embodiment is with as the device of being heat-treated in continuous oven 3 by the glass substrate 2 of thermal treatment thing.This continuous oven 3 has and has constituted the 1st～the 3rd stove 3 of continuous a plurality of thermal treatment zone on the horizontal direction
1～3
3At each stove 3
1～3
3In, not shown temperature sensor and well heater are set respectively.With exporting to and each stove 3 of said temperature sensor
1～3
3Each corresponding respectively temperature regulator 4
1～4
3In,, and according to each temperature regulator 4
1～4
3, control each stove 31～3
3The energising of above-mentioned well heater.
Each temperature regulator 4
1～4
3Based on the design temperature of setting by not shown epigyny device or configuration part (target temperature) and by above-mentioned each stove 3
1～3
3The detected temperatures that provides of temperature sensor between deviation, control and be arranged at each stove 3 respectively
1～3
3In the energising of well heater.
In continuous oven 3 by heat treated glass substrate 2 by band conveyer 5 with constant speed by being transported and heat-treating in the continuous oven that arrow A is shown in 3.
In the thermal treatment of described glass substrate 2, need each stove 3 of control
1～3
3Temperature so that show be transported and continuous oven 3 in mobile glass substrate 2 in time the temperature curve how to change of temperature reach desired temperature curve.Therefore, need to respectively with each stove 3
1～3
3Corresponding temperature regulator 4
1～4
3Design temperature adjust.
In the present embodiment, not to rely on existing operator's experience and sensation and carry out the adjustment operation of described design temperature with attempting, but, carry out as described below in order can easily to operate by mistake.
That is, the temperature-controlled process of present embodiment is: at first, make each stove 3
1～3
3Design temperature change respectively and adjust under each state after determining, transport glass substrate 2 with constant speed, it is moved in continuous oven 3 and heat-treat respectively, at this moment can obtain the interference degrees how temperature of a plurality of observation stations place glass substrate 2 in continuous oven 3 changes in advance.
So-called observation station is the position that is used for observing the glass substrate 2 of temperature in continuous oven 3.In the temperature curve of the temperature variation that shows time dependent glass substrate 2, observation station is corresponding with the moment that is used for observed temperature.
The consistent high moment of necessity of temperature of the temperature that this observation station preferably makes glass substrate 2 and desired temperature curve.For example, as described below, glass substrate 2 is preferably through the 1st stove 3
1During a bit, through the 2nd stove 3
2During a bit, through the 3rd stove 3
3During a bit 3 as observation station.
And so-called interference degrees is meant and makes each stove 3
1～3
3Design temperature when changing respectively, because each stove 3
1～3
3Between heat interfere the influence degree that the temperature of the glass substrate 2 at a plurality of observation stations place in continuous oven 3 is subjected to respectively.
Then, use the interference degrees of obtaining in advance, calculate above-mentioned each stove 3
1～3
3The offset of design temperature so that the temperature of corresponding observation station is consistent on the temperature of the glass substrate 2 at above-mentioned a plurality of observation stations place and the desired temperature curve.
That is, according to having shown and each stove 3
1～3
3Design temperature change the interference degrees of a plurality of observation stations place temperature variation of corresponding glass substrate 2, for the temperature at a plurality of observation stations place of making glass substrate 2 becomes the temperature of desired temperature curve, calculate each stove 3
1～3
3Design temperature how to be changed to, and by way of compensation the value.
In order to obtain interference degrees, in fact, for example, preferably make the 1st stove 3
1Design temperature change and adjust under the state after determining, glass substrate 2 is flowed and the instrumentation temperature curve in continuous oven 3, then, make the 2nd stove 3
2Design temperature change and adjust under the state after determining, glass substrate 2 is flowed and the instrumentation temperature curve in continuous oven 3, last, make the 3rd stove 3
3Design temperature change and adjust under the state after determining, glass substrate 2 is flowed and the instrumentation temperature curve in continuous oven 3.
But continuous oven 3 is very long, when the quantity of the stove that constitutes this continuous oven 3 is many, needs a large amount of man-hours, so unrealistic.
Therefore, in the present embodiment, to containing continuous oven 3 and, using the model of this system to obtain interference degrees as being carried out modelling by the system of the glass substrate 2 of thermal treatment thing.
That is, in the present embodiment, as shown in Figure 2, at first, in the same manner, the test that temperature sensor has been installed is moved in continuous oven 3 and heat-treated with constant speed with glass substrate 2, simultaneously its temperature curve of instrumentation (step n1) during with practice.Use the temperature curve of this glass substrate 2 that the system that contains continuous oven 3 and glass substrate 2 is carried out modelling, and use the model of this system, obtain when making each stove 3
1～3
3Design temperature when changing, the interference degrees (step n2) how a plurality of observation stations place of the temperature of glass substrate 2 in continuous oven 3 changes.
Then, according to the interference degrees of obtaining, in above-mentioned a plurality of observation stations,, calculate at least one the offset (step n3) in compensation making temperature and the detected temperatures for the temperature that makes glass substrate 2 is consistent with the corresponding temperature of desired temperature curve.When practice, the offset that use is calculated comes at least one (the step n4) in compensation making temperature and the detected temperatures.
Fig. 3 is the roughly pie graph of an example that is used for the instrumentation interference degrees and calculates the annealing device of offset.Use identical reference marks with the corresponding part of Fig. 1.In this Fig. 3, the test glass substrate of temperature sensor has been installed in 2 expressions, the 6 expression instrumentation experiments thermometrograph (logger) of glass substrate 2 temperature, and 7 expressions are as being connected to thermometrograph 6 and each temperature regulator 4
1～4
3PLC (ProgrammableLogicController) or the epigyny device of device by way of compensation such as personal electric computing machine.This epigyny device 7 is according to thermometrograph 6 and each temperature regulator 4
1～4
3Between communication etc., can change each temperature regulator 4
1～4
3Design temperature, temperature that simultaneously can instrumentation glass substrate 2.By this epigyny device 7 and temperature regulator 4
1～4
3Constitute temperature control equipment of the present invention.
And, in the present embodiment, epigyny device 7 has microcomputer, by the heat treatment method of storing among the ROM that moves this microcomputer of the present invention, the system that contains continuous oven 3 and glass substrate 2 is carried out modelling, use this model to obtain interference degrees, calculate offset as follows, each temperature regulator 4 is set and be stored in to the offset of calculating respectively according to this interference degrees
1～4
3In.
In the present embodiment, with the said system modelling, so that at each stove 3
1～3
3Design temperature when changing, the temperature that can use the system model that contains continuous oven 3 and glass substrate 2 to infer the glass substrate 2 at a plurality of observation stations place in continuous oven 3 is subjected to each stove 3
1～3
3Between the degree of interference effect.
In order to carry out this modelling, at first, similarly, the test that temperature sensor has been installed is moved in continuous oven 3 with constant speed with glass substrate 2 and heat-treat the instrumentation temperature curve during with practice.That is, with each stove 3
1～3
3Temperature control adjust and determine under the state of certain design temperature, make test in continuous oven 3, move and heat-treat with constant speed with glass substrate 2, for example, as shown in Figure 4, the instrumentation temperature curve.
And in Fig. 4, r1～r3 represents each stove 3
1～3
3Design temperature.Each stove 31～3
3Design temperature r1～r3 be preferably set to can access with desired temperature curve nearer like the value of temperature curve, but setting also can arbitrarily.
Then, use data and each stove 31～3 of this temperature curve
3The data of design temperature, as shown in Figure 5, set up the model 8 of the system that contains continuous oven 3 and glass substrate 2.
Use for example ARX model shown in the following formula as this model 8, obtain parameter alpha, β with least square method.
α(q)y(k)＝β(q)u(k)
Wherein, α, β: the parameter of model
Q: displacement operator
U (k): the time series data of the design temperature of stove
Y (k): the time series data of glass substrate temperature
k：0，1，2，3...
Sample period is for example 0.5 second.
Here, pass through each stove 3 respectively at glass substrate 2
1～3
3During, the time series data u (k) of the design temperature of stove is each stove 3
1～3
3The definite value of each design temperature.For example, glass substrate 2 is passing through the 1st stove 3
1During, the time series data u (k) of the design temperature of stove is the 1st stove 3
1Design temperature r1.
Use least square method by inferring parameter alpha, β like this, and set up model 8 as the time series data u (k) of the design temperature of the stove of input data with as the time series data y (k) of the glass substrate temperature of output data.
By the model 8 that uses this system, according to each stove 3
1～3
3Design temperature, can infer the temperature of the glass substrate 2 at a plurality of observation stations place in the continuous oven 3.
Therefore, in the present embodiment, can obtain as follows when making each stove 3
1～3
3Design temperature when changing, the influence degree that the temperature of the glass substrate 2 at a plurality of observation stations place in the continuous oven 3 is subjected to, i.e. interference degrees.
At first, with each stove 3
1～3
3Design temperature r1～r3 set respectively and adjust and be specified to T ℃, the 8 a plurality of observation stations places of inferring in advance when supposition is moved glass substrate 2 with constant speed in continuous oven 3 that use a model are for example in the temperature of the glass substrate 2 at as shown in Figure 6 the 1st～the 3rd observation station P1～P3 place.
Then, shown in Fig. 6 (a), make the 1st stove 3
1Design temperature r1 from T ℃ of changes delta a1, for example, change 1 ℃, with the 2nd, the 3rd stove 3
2, 3
3Design temperature r2, r3 set respectively and adjust and determine at T ℃, use a model and 8 infer the temperature that makes glass substrate 2 glass substrate 2 at the 1st～the 3rd observation station P1～P3 place when mobile in continuous oven 3 in supposition, thereby infer temperature variation c11, c12, the c13 that begins from the temperature of the glass substrate 2 that makes design temperature r1 the 1st～the 3rd observation station P1～P3 before changing, that infer in advance.
Similarly, shown in Fig. 6 (b), the 2nd stove 3
2Design temperature r2 from T ℃ of changes delta a2, for example, change 1 ℃, with the 1st, the 3rd stove 3
1, 3
3Design temperature r1, r3 set respectively and adjust and determine at T ℃, use a model and 8 infer the temperature that makes glass substrate 2 glass substrate 2 at the 1st～the 3rd observation station P1～P3 place when mobile in continuous oven 3 in supposition, thereby infer temperature variation c21, c22, the c23 that begins from the temperature of the glass substrate 2 that makes design temperature r1 the 1st～the 3rd observation station P1～P3 before changing, that infer in advance.
And, shown in Fig. 6 (c), the 3rd stove 3
3Design temperature r3 from T ℃ of changes delta a3, for example, change 1 ℃, with the 1st, the 2nd stove 3
1, 3
2Design temperature r1, r2 set respectively and adjust and determine at T ℃, use a model and 8 infer the temperature that makes glass substrate 2 glass substrate 2 at the 1st～the 3rd observation station P1～P3 place when mobile in continuous oven 3 in supposition, thereby infer temperature variation c31, c32, the c33 that begins from the temperature of the glass substrate 2 that makes design temperature r1 the 1st～the 3rd observation station P1～P3 before changing, that infer in advance.
Like this, when making each stove 3 respectively
1～3
3Design temperature r1～r3 when changing, according to each stove 3
1～3
3Between interference, obtain the temperature variation of the glass substrate 2 at the 1st～the 3rd observation station P1～P3 place in the expression continuous oven 3, i.e. the following matrix of interference degrees.
Formula 1
And, if each stove 3 of continuous oven 3
1～3
3Design temperature r1～r3 be changed to Δ a1～Δ a3, the temperature variation at the 1st～the 3rd observation station P1～P3 place of glass substrate 2 is Δ b1～Δ b3, then following relational expression is set up.
Then, use and try to achieve as stated above, the matrix of expression interference degrees is to each stove 3 of heat-treating for the temperature that makes glass substrate 2 becomes the temperature of desired temperature curve
1～3
3The compensation of design temperature r1～r3 be illustrated.
Set each stove 3 at first, respectively
1～3
3Design temperature r1～r3, make test mobile and heat-treat in continuous oven 3 with glass substrate 2, as shown in Figure 7, instrumentation temperature curve L1.Each stove 3
1～3
3Design temperature r1～r3 preferably set the value that can obtain with the more approaching temperature curve of desired temperature curve, also can set arbitrarily.
Then, the temperature difference of the corresponding temperature of the instrumentation temperature at the 1st～the 3rd observation station P1～P3 place of the temperature curve L1 of gained and desired temperature curve L2 can be obtained each stove 3 in order to dwindle this temperature difference Δ b1～Δ b3 during as Δ b1～Δ b3
1～3
3Design temperature r1～r3 or temperature regulator 4
1～4
3Each stove 3 of input
1～3
3The offset Δ a1～Δ a3 of detected temperatures (input temp).
And,,, also can use the temperature curve of Fig. 4 of instrumentation in advance as temperature curve L1 in order to set up the system model that contains continuous oven 3 and glass substrate 2.
This offset Δ a1～Δ a3 can use expression above-mentioned interference degree the inverse of a matrix matrix, calculate by following formula.
Above-mentioned by finding the solution (3) formula, can calculate over simply needs the wrong ground of attempting to adjust the offset that can obtain.
And, with the offset of calculating, with each stove 3
1～3
3Design temperature r1～r3 or to temperature regulator 4
1～4
3Each stove 3 of input
1～3
3The detected temperatures addition after compensation the result, with the temperature difference of the temperature of desired temperature curve be great value, can be predicted according to above-mentioned matrix inversion operation.
And the quantity of observation station is 3, but also can be not limited to 3, can be any number.
As mentioned above, the offset of calculating with epigyny device 7 is sent to corresponding temperature regulator 4 respectively
1～4
3, respectively at each temperature regulator 4
1～4
3Set.
Therefore, the experience that does not need to rely on the operator is carried out the design temperature of wrong trial mode or the adjustment operation of detected temperatures, can realize robotization.
And the operator can compensate each temperature regulator 4 according to the offset that epigyny device 7 is calculated
1～4
3Design temperature or detected temperatures (input temp).
Fig. 8 is the temperature regulator 4 of present embodiment
1～4
3Calcspar.
Temperature regulator 4
1～4
3Design temperature compensation section 9 with compensation making temperature.In this design temperature compensation section 9, as mentioned above, the offset that storage epigyny device 7 is calculated simultaneously, will be exported after this offset and the design temperature r1～r3 addition.
Therefore,, use PID control part 10 to carry out PID and calculate according to the deviation between design temperature that adds offset and the detected temperatures, and output function amount MV, each stove 3 controlled
1～3
3The energising of each set well heater is heat-treated glass substrate 2 with the temperature of desired temperature curve.
And design temperature compensation section 9 and PID control part 10 can be made of for example microcomputer.
(other embodiment)
In the above-described embodiments, as shown in Figure 7, though with the temperature difference between the corresponding temperature of the temperature at the 1st～the 3rd observation station P1～P3 place of the temperature curve L1 of instrumentation and desired temperature curve L2 as Δ b1～Δ b3, but in other embodiments, compensation precision is poor slightly, as shown in Figure 9, glass substrate 2 is heat-treated the initial stage temperature T of this glass substrate 2 before
0For example be 30 ℃, and the temperature difference between the corresponding temperature of each observation station P1～P2 of desired temperature curve L2 also can be Δ b1～Δ b3.
In the above-described embodiments, though a temperature sensor is set, and the temperature of a point of instrumentation only, temperature that also can a plurality of points of instrumentation in the plane of glass substrate on the glass substrate.For example, when three points in the plane of instrumentation at glass substrate, the quantity of putting corresponding temperature curve and model with each instrumentation also is three.At this moment, for example respectively during the triparted observation in above-mentioned each observation station P1～P3 place carries out the plane of glass substrate, the result is the observation that 3 * 3=9 is ordered, compare with counting 3 of the temperature that can set continuous oven with three stoves, because it is many that the quantity of observation station becomes, so 3 * 3 matrix of expression above-mentioned interference degree becomes 9 * 3 matrix, ask its inverse matrix difficulty that becomes.Therefore, in this case, replace inverse matrix can use virtual inverse matrix.
In the above-described embodiments, though allow glass substrate in continuous oven, move and heat-treat with constant speed, also can change glass substrate in continuous oven translational speed and heat-treat.In this case, when carrying out the time dependent data of temperature of modelling instrumentation glass substrate, carry out instrumentation behind same the variation in the time of also can making the translational speed of glass substrate and thermal treatment.
In the above-described embodiments, be three situation and be illustrated being applicable to thermal treatment zone, but the present invention is not limited in three.
In the above-described embodiments, though the thermal treatment that is suitable for glass substrate is illustrated, also be applicable to the thermal treatment of semiconductor substrate or other materials.
In the above-described embodiments,, also be applicable to the cooling processing of having used amber ear card equipment or refrigeratory etc., and be applicable to the temperature control of heating and cooling and usefulness though used the heat treated of well heater to be illustrated to being applicable to.
In addition, thermal treatment zone can also be carried out controls such as air quantity simultaneously except that temperature control.
Utilize possibility on the industry
The present invention can be used for temperature control equipment and annealing device.
Claims (9)
1, a kind of temperature-controlled process, be to make by the thermal treatment thing in the thermal treatment that continuous a plurality of thermal treatment zone are carried out while moving, control each thermal treatment zone method of temperature, by the temperature of thermal treatment thing and desired, calculate at least one offset of the target temperature that is used for compensating above-mentioned thermal treatment zone and detected temperatures according to above-mentioned by the temperature difference between the temperature value of the temperature curve of thermal treatment thing; Above-mentioned temperature by the thermal treatment thing is to make the above-mentioned instrumentation temperature that is moved and carry out a plurality of observation stations place of instrumentation by the thermal treatment thing in above-mentioned a plurality of thermal treatment zone; It is characterized in that, comprising:
The 1st step makes and is above-mentionedly moved and heat-treat in above-mentioned a plurality of thermal treatment zone by the thermal treatment thing, and instrumentation should be by the temperature of thermal treatment thing;
The 2nd step, according to instrumentation by the temperature of thermal treatment thing, obtain when above-mentioned target temperature is changed, above-mentioned by the interference degrees between the thermal treatment zone at above-mentioned a plurality of observation stations place of thermal treatment thing;
The 3rd step according to the interference degrees of obtaining, is calculated above-mentioned offset.
2, temperature-controlled process as claimed in claim 1 comprises: the 4th step according to the above-mentioned offset of calculating, compensates at least one in above-mentioned target temperature and the above-mentioned detected temperatures.
3, temperature-controlled process as claimed in claim 1 or 2,
In the 2nd step, according to institute's instrumentation by the temperature of thermal treatment thing, obtain the temperature variation of the above-mentioned target temperature of expression and above-mentioned by the matrix of the temperature variation at above-mentioned a plurality of observation stations place of thermal treatment thing relation;
In the 3rd step, use above-mentioned inverse of a matrix matrix to calculate above-mentioned offset.
4, temperature-controlled process as claimed in claim 3,
In above-mentioned the 2nd step, according to the target temperature of thermal treatment zone and institute's instrumentation by the temperature of thermal treatment thing, set up and contain thermal treatment zone and, use the model of being set up to obtain above-mentioned matrix by the model of thermal treatment thing.
5, a kind of temperature control equipment,
Comprise: temperature regulator, making by the thermal treatment thing in the thermal treatment that continuous a plurality of thermal treatment zone are carried out while moving, control the temperature of each thermal treatment zone; Compensation system, it by the temperature of thermal treatment thing and desired by the temperature difference between the temperature value of the temperature curve of thermal treatment thing, calculates offset according to above-mentioned;
The said temperature regulator is to control the device of the temperature of above-mentioned thermal treatment zone according to the target temperature of above-mentioned thermal treatment zone and detected temperatures, and according to above-mentioned offset, compensates at least one in above-mentioned target temperature and the above-mentioned detected temperatures;
Above-mentioned temperature by the thermal treatment thing is to make above-mentionedly to be moved and the instrumentation temperature at a plurality of observation stations place of measuring in above-mentioned a plurality of thermal treatment zone by the thermal treatment thing;
It is characterized in that, above-mentioned compensation system when above-mentioned target temperature is changed, above-mentioned by the interference degrees between the thermal treatment zone at above-mentioned a plurality of observation stations place of thermal treatment thing, calculate above-mentioned offset.
6, temperature control equipment as claimed in claim 5, above-mentioned compensation system according to move at above-mentioned a plurality of processing regions measure by the temperature of thermal treatment thing, obtain the expression temperature variation of above-mentioned target temperature and above-mentioned, use this inverse of a matrix matrix to calculate above-mentioned offset by the matrix of the relation of the temperature variation at above-mentioned a plurality of observation stations place of thermal treatment thing.
7, temperature control equipment as claimed in claim 6, that above-mentioned compensation system has is that the temperature by the thermal treatment thing according to the target temperature of each thermal treatment zone and instrumentation draws, contain thermal treatment zone and by the model of thermal treatment thing, and uses this model to obtain above-mentioned matrix.
8, a kind of annealing device is characterized in that, comprising: any described temperature control equipment in the claim 5 to 7; And have continuous a plurality of thermal treatment zone, and carried out temperature controlled apparatus for continous treatment by the said temperature control device.
9, a kind of heat treatment method, be to make by the thermal treatment thing in the thermal treatment that continuous a plurality of thermal treatment zone are carried out while moving, control the temperature of each thermal treatment zone temperature and control employed heat treatment method, it is characterized in that, carry out as follows by computing machine:
The 1st step, input make above-mentioned by the thermal treatment thing above-mentioned a plurality of thermal treatment zone move and in the thermal treatment carried out this of institute's instrumentation by the temperature data of thermal treatment thing;
The 2nd step according to the temperature data of the object being treated of being imported, is obtained above-mentioned by the interference degrees between the thermal treatment zone at a plurality of observation stations place of thermal treatment thing when above-mentioned target temperature is changed;
The 3rd step according to the above-mentioned interference degree, and above-mentioned by the temperature difference between the temperature of the temperature of thermal treatment thing and desired temperature curve, is calculated the target temperature of the above-mentioned thermal treatment zone of compensation and at least one the offset in the detected temperatures.
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| JP2005008926 | 2005-01-17 | ||
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| JPP2005343477 | 2005-11-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843981A (en) * | 2015-04-08 | 2015-08-19 | 东莞南玻工程玻璃有限公司 | Automatic heating control method in glass hot bending molding process |
| CN111998689A (en) * | 2020-09-08 | 2020-11-27 | 索通发展股份有限公司 | Method and system for controlling carbon anode roasting process for aluminum |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102607288A (en) * | 2012-01-06 | 2012-07-25 | 山西太钢不锈钢股份有限公司 | Pulse type kiln temperature dynamic control method |
| CN102759936A (en) * | 2012-07-30 | 2012-10-31 | 彩虹显示器件股份有限公司 | Temperature control method for glass tank |
| CN105084731A (en) * | 2014-05-15 | 2015-11-25 | 洛阳兰迪玻璃机器股份有限公司 | Tempering cooling system of tempered glass |
| CN108722732B (en) * | 2018-07-12 | 2021-10-22 | 江苏常宝普莱森钢管有限公司 | Process method and device for spraying lubricant on core rod |
| CN109081558B (en) * | 2018-10-22 | 2019-09-17 | 中国建材国际工程集团有限公司 | A kind of optimal control method of float glass forming process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843981A (en) * | 2015-04-08 | 2015-08-19 | 东莞南玻工程玻璃有限公司 | Automatic heating control method in glass hot bending molding process |
| CN111998689A (en) * | 2020-09-08 | 2020-11-27 | 索通发展股份有限公司 | Method and system for controlling carbon anode roasting process for aluminum |
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