CN100354783C - Method and apparatus for controlling the operation of stock preparation of a paper machine - Google Patents

Abstract

A method and an apparatus for controlling the operation of stock preparation of a paper machine for preparing machine stock from component stocks. The stock preparation includes a plurality of successive blending points, where the component stocks are blended with each other, a second raw material of the machine stock is added to the stock and/or the stock is diluted by blending dilution water with the stock. The flow and/or consistency of one or more stocks arriving at a blending point and/or the flow and consistency of the stock leaving a blending point and/or the concentration of the second raw material of the machine stock in the stock is adjusted in such a manner that the flow and/or consistency of the stock and/or the concentration of the second raw material of the machine stock in the stock follow target values determined for them.

Description

The method and apparatus of the operation of getting the raw materials ready of control paper machine

Technical field

The present invention relates to a kind of method that is used to control (stock preparation) operation of getting the raw materials ready of paper machine, melting process is set is in order from one or more constitutive materials (stock), to be transported to machine material (machinestock) in the short circulation of paper machine by it being stirred mutually generation, and melting process comprises a plurality of continuous stir spots, in stir spot, constitutive material is stirred mutually, second starting material of machine material are joined bed blending/or by with dilution water and raw material mixed diluting raw material, and in the method scalable arrive stir spot one or more raw materials flow and/or denseness and/or arrive the second raw-material concentration of machine material in the raw material of stir spot, and/or regulate the flow and the denseness of the raw material that leaves stir spot and/or leave the second raw-material concentration of machine material in the raw material of stir spot.

The present invention relates to a kind of device that is used to control the operation of getting the raw materials ready of paper machine further, melting process is set is in order from one or more constitutive materials, to be transported to machine material in the short circulation of paper machine by they being stirred mutually generation, and melting process comprises a plurality of continuous stir spots, in stir spot, constitutive material is stirred mutually, second starting material of machine material are joined bed blending/or by with dilution water and raw material mixed diluting raw material, dispose described device and be the second raw-material concentration, and/or regulate the flow and the denseness of the raw material that leaves stir spot and/or leave the second raw-material concentration of machine material in the raw material of stir spot for machine material in the flow and/or denseness of regulating one or more raw materials that arrive stir spot and/or the raw material that arrives stir spot.

The invention still further relates to a kind of method that is used to control the operation of getting the raw materials ready of paper machine, melting process is set is in order from one or more constitutive materials, to be transported to machine material in the short circulation of paper machine by they being stirred mutually generation, and in this melting process, second starting material of machine material are joined bed blending/or by with dilution water and raw material mixed diluting raw material, and scalable second raw-material concentration of machine material in the flow of mobile raw material and denseness and/or the raw material forward on the dosing circuit of getting the raw materials ready in the method.

Background technology

In paper-making industry, the dosing that is transferred to the short round-robin paper making raw material of paper machine or paper pulp from the melting process of paper machine by control regulate measured at the papermaking width of cloth basis weight or from the variable of this weight, the basis weight under for example air-dry or absolutely dried condition.The raw material of lacking in the circulation that is transported to paper machine is commonly referred to the machine material.Because to such an extent as to the quality of the machine material that produced and content can not be done to such an extent that so consistently can directly raw material be imported to paper machine from production equipment, so melting process comprises different storagetank and medial launders in a large number.Be included in the various constitutive materials in the machine material, promptly comprise the raw material of variety classes fiber, form first starting material of machine material, i.e. the stringiness starting material of machine material.Join second starting material of different fillers, adjuvant and chemicals composition machine material in machine material or the constitutive material.Improve the quality of finished paper and the operability of printability or manufacture process with these different fillers, adjuvant and chemicals.Typically, described constitutive material, filler, adjuvant and chemicals are kept in the big storagetank.In the dosing system of getting the raw materials ready, regulate the composition of the machine material that is transported to paper machine, the different material composition that wherein is included in the raw material had not only stirred in leading to the pipeline of tank diameter but also in tank diameter self mutually, thus raw material was transported to trough and further was transported to the short circulation of paper machine from trough.The denseness that typically will be transported to short round-robin machine material remains on 3%.Because the concentration that is stored in the constitutive material in the storagetank normally 10% to 14%, and the concentration normally about 5% of slurrying material again, so the denseness of different constitutive materials and, if necessary, the denseness of mixed raw material can be diluted by adding entry, and these water are isolated plain boiled water from the short circulation of paper machine normally.Therefore, joining the denseness that the amount of the dilution water in the raw material is regulated the raw material that will be transported to paper machine by change, promptly is exactly that the adjusting of the denseness of raw material always relates to respect to the amount of raw material and the proper proportion of denseness dilution water is joined in the raw material.

Be transported to the basis weight that the fiber flow of paper machine is regulated the paper web that will make by change.In fact, be to regulate basis weight by the flow that changes the machine material.Because the variation of raw material denseness is not in the future known in the adjusting of basis weight, can for example pass through, the additional description " denseness with 3% " that comprises the denseness that relates to the raw material that will carry in the request of machine materials flow amount can be cancelled consistency change, promptly is exactly that the expectation denseness of the machine material that will carry is 3%.If measured denseness divergence indicator, just modified flow rate index correspondingly.Thereby just desired fiber flow is flowed to paper machine.The adjusting of basis weight requires the fiber flow of necessary amounts or comes from the machine materials flow amount of the trough of getting the raw materials ready, and purpose is to keep constant material quantity there always.The variation of the machine materials flow amount that is caused by the variation of basis weight, i.e. flow rate disturbance propagates into the accumulator of constitutive material from paper machine, and the adjusting behavior of the surface elevation of each medial launder on the dosing circuit has further been strengthened flow rate disturbance again.Fast, so can not regulate denseness constantly, cause the denseness disturbance because flow rate disturbance is strong, it flows to paper machine together with feed stream.Because the capacity of medial launder is very big and the dosing circuit is very long, make said process have very long time-delay, therefore the variation regulated the concentration of the denseness of constitutive material and filler, adjuvant and chemicals of getting the raw materials ready is extremely responsive, and these change the circuit pack that is easy to again to cause at paper machine and are detained and change.Delay variation at circuit pack also can cause the basis weight of dust burdening and paper web to change.Therefore, the flow rate disturbance that is caused by the variation of basis weight at first advances to the raw material tower by the dosing groove from trough with the flow rate disturbance form, turns back to the machine material with the dilution step of denseness disturbance form by the dosing circuit then and further makes one's way the basis weight of paper again.Dry end at paper machine before paper web is involved in machine drum is measured basis weight immediately, and the error of detected basis weight causes new variation by changing machine materials flow amount when measuring thus, promptly is exactly flow rate disturbance.As a result, produce a kind of unmanageable dither state, will produce the paper or the cardboard of basis weight mistake and dust burdening during this period.This shake also will cause other disturbance by for example dilution circuit in process.

The dosing solution of above-mentioned mixed capacity based on trough and tank diameter is not unique workable solution.Also can solve the dosing and the stirring of constitutive material by other mode.For example, described trough and described tank diameter can be two continuous tank diameters and trough as the 3rd groove, be sure of thus to stir and will still carry out under the control preferably.If the denseness of constitutive material and other characteristics are well controlled, a groove is just enough so.In new solution, its objective is in short circulation and in the mixing plant of a separation, constitutive material is stirred mutually, thereby process does not just comprise any tank diameter or trough.

At present, use based on the cell controller of feedforward coupling surface elevation by regulating the different material groove and the dosing that comes blank stock at the denseness and the flow velocity of the difference place of process feed stream, example to this has at US 6,210,529 is disclosed in the surface elevation of raw material tank adjusting constitutive material and the method for denseness, and at US 6,203,667 disclosedly regulate the method for the basis weight of paper or plate by the rationing constitutive material, and these two kinds of methods all utilize the feedforward coupling to regulate process.Yet it is problematic using the feedforward coupling in adjustment process, because when using the feedforward coupling, just the action that the adjusting of the processing part after the controller can not be changed is taken into account.

Summary of the invention

The solution that the purpose of this invention is to provide a kind of novel blank stock operation.

Method of the present invention be characterised in that the denseness of one or more raw materials that determine to arrive stir spot or in the raw material that arrives stir spot the second raw-material concentration and determining of machine material leave stir spot raw material denseness or leave the second raw-material concentration of machine material in the raw material of stir spot, the flow of one or more raw materials of definite arrival stir spot and the flow that leaves the raw material of stir spot, determine to the denseness prediction of the denseness of one or more raw materials of arriving stir spot or to the second raw-material concentration prediction machine material in the raw material that reaches stir spot, determine volume forecasting to the flow of the raw material that leaves stir spot, determine to arrive stir spot one or more raw materials denseness consistency factor or arrive the second raw-material aimed concn of machine material in the raw material of stir spot and/or determine to leave stir spot raw material denseness consistency factor or leave the second raw-material aimed concn of machine material in the raw material of stir spot, determine to arrive stir spot one or more raw materials flow flow indicator and/or leave the flow indicator of flow of the raw material of stir spot, and based on to the volume forecasting of the raw material that leaves stir spot and/or to the denseness prediction of one or more raw materials of arriving stir spot and/or to the second raw-material concentration prediction of machine material, the second raw-material concentration of the machine material in the raw material of the denseness of one or more raw materials of adjusting arrival stir spot and/or flow and/or arrival stir spot, so making the flow of one or more raw materials of arriving stir spot follow determined flow indicator and/or denseness follows in determined consistency factor and/or the raw material the second raw-material concentration of machine material and follows determined aimed concn, and/or based on to the volume forecasting of the raw material that leaves stir spot and/or to the denseness prediction of one or more raw materials of arriving stir spot and/or to the second raw-material concentration prediction of machine material, adjusting leave stir spot raw material flow and denseness and/or leave the second raw-material concentration of machine material in the raw material of stir spot, so make the material flow that leaves stir spot follow determined flow indicator and denseness and follow in determined consistency factor and/or the raw material the second raw-material concentration of machine material and follow determined aimed concn.

Device of the present invention be characterised in that this device of configuration be used for determine arriving stir spot one or more raw materials denseness or in the second raw-material concentration of the raw material machine material that arrives stir spot and determine to leave stir spot raw material denseness or leave the second raw-material concentration of machine material in the raw material of stir spot, the flow of one or more raw materials of definite arrival stir spot and the flow that leaves the raw material of stir spot, the second raw-material concentration prediction of machine material in the denseness prediction of the denseness of one or more raw materials of definite arrival stir spot or the raw material of arrival stir spot, determine to leave the volume forecasting of flow of the raw material of stir spot, determine to arrive stir spot one or more raw materials denseness consistency factor or arrive the second raw-material aimed concn of machine material in the raw material of stir spot and/or determine to leave stir spot raw material denseness consistency factor or leave the second raw-material aimed concn of machine material in the raw material of stir spot, determine to arrive stir spot one or more raw materials flow flow indicator and/or leave the flow indicator of flow of the raw material of stir spot, and based on to the volume forecasting of the raw material that leaves stir spot and/or to the denseness prediction of one or more raw materials of arriving stir spot and/or to the second raw-material concentration prediction of machine material, second kind of raw-material concentration of machine material in the raw material of the denseness of one or more raw materials of adjusting arrival stir spot and/or flow and/or arrival stir spot, so making the flow of one or more raw materials of arriving stir spot follow determined flow indicator and/or denseness follows in determined consistency factor and/or the raw material the second raw-material concentration of machine material and follows determined aimed concn, and/or, so make the material flow that leaves stir spot follow determined flow indicator and denseness and follow in determined consistency factor and/or the raw material the second raw-material concentration of machine material and follow determined aimed concn based on regulating the flow and the denseness of the raw material that leaves stir spot and/or leave the second raw-material concentration of machine material in the raw material of stir spot to the volume forecasting of the raw material that leaves stir spot and/or to the denseness prediction of one or more raw materials of arriving stir spot and/or to the second raw-material concentration prediction of machine material.

The feature of method that the present invention is used for regulating the second raw-material concentration of the flow of the raw material that leaves stir spot and denseness and/or raw material machine material also is to determine the data on flows and the volume forecasting of machine material, determine the data on flows and the volume forecasting of one or more constitutive materials, transmit the data on flows and the volume forecasting of constitutive material backward along the dosing circuit of getting the raw materials ready, so make the fluctuations in discharge in the future that the adjusting utilization of the material flow that control is transmitted forward along the dosing circuit predicts, determine second raw-material concentration of machine material in prediction of the denseness data of one or more constitutive materials and denseness and/or the raw material and the concentration prediction in raw material, and transmit second raw-material concentration of machine material in the denseness data of constitutive material and denseness prediction and/or the raw material and the concentration prediction in raw material forward along the dosing circuit of getting the raw materials ready, make so that the adjusting utilization of the second raw-material concentration of machine material is predicted in the denseness of control raw material or the raw material future denseness variation or raw material in the second raw-material concentration change of machine material.

Basic thought of the present invention is the operation of getting the raw materials ready of control paper machine; Making gets the raw materials ready is suitable for from a kind of constitutive material or several constitutive material will being transported to machine material in the short circulation of paper machine by they being stirred mutually generation; Melting process comprises a plurality of continuous stir spots; In stir spot; Various constitutive materials are stirred mutually; Second kind of starting material of machine material are joined bed blending/or by with dilution water and raw material mixed diluting raw material; the second raw-material concentration of machine material and/or leave the flow and the denseness of raw material of stir spot by adjusting and/or the second raw-material concentration of leaving machine material in the raw material of stir spot is diluted raw material in flow and/or denseness by regulating one or more raw materials that arrive stir spot and/or the raw material that arrives stir spot.Described basic thought comprises the denseness of one or more raw materials that determine to arrive stir spot or arrives the second raw-material concentration of machine material in the raw material of stir spot； Determine to leave stir spot raw material denseness or leave the second raw-material concentration of machine material in the raw material of stir spot, determine to arrive stir spot one or more raw materials flow and leave the flow of the raw material of stir spot. basic thought also comprise and determining to the denseness prediction of the denseness of one or more raw materials of arriving stir spot or to the prediction of the second raw-material concentration of machine material in the raw material that arrives stir spot; Determine to leave the volume forecasting of flow of the raw material of stir spot, determine to arrive stir spot one or more raw material denseness consistency factor or arrive the second raw-material aimed concn of machine material in the raw material of stir spot and/or determine to leave stir spot the raw material denseness consistency factor or leave the second raw-material aimed concn of machine material in the raw material of stir spot and determine to arrive stir spot one or more raw materials flow flow indicator and/or leave the flow indicator of the material flow of stir spot. ///////。 Basic thought according to the present invention, the consistency change of available predictions replace the denseness prediction, and the concentration change of available predictions replaces the prediction to the second raw-material concentration of machine material in the raw material.In a preferred embodiment of the invention, come the blank stock operation with model predictive control method, it comprises describes process or wherein a part of processing model and optimization, makes the cost function relevant with optimization minimize to realize the Optimal Control to the operation of getting the raw materials ready.According to one second preferred embodiment of the present invention, use the dynamic machining model as processing model.

An advantage of the present invention is to get the raw materials ready for the different conditions that paper machine production changes and can makes reaction rapidly and exactly, for example cloth width of cloth fracture, and paper machine starts, and grade changes and velocity variations.The scheme that is provided has been eliminated the influence that therefore the at present very general shake aspect the flow of getting the raw materials ready, surface elevation, denseness and concentration and these disturbances produce the quality of paper, and can make in time than currently used method and regulating more accurately.

Described scheme of the present invention is equally applicable to the production of plate class and soft thin article, and therefore, in this manual, term " paper " not only refers to stationery, and fingerboard class and soft thin article.

Description of drawings

Describe the present invention in detail below in conjunction with accompanying drawing, wherein

Fig. 1 is the synoptic diagram of the part of getting the raw materials ready of paper machine,

Fig. 2 is the principle of operation synoptic diagram of controller materials flow amount,

Fig. 3 is the principle schematic of total amount of flow that determine to arrive the constitutive material of stirring/trough,

Fig. 4 is the principle schematic of the constitutive material that quantitatively provides from the constitutive material groove of control,

Fig. 5 is the principle schematic of dilution constitutive material behind the constitutive material groove,

Fig. 6 is the principle schematic that quantitatively provides constitutive material from the raw material tower,

Fig. 7 is the dilution synoptic diagram of constitutive material behind the raw material tower,

Fig. 8 is the synoptic diagram that calculates the prediction of constitutive material denseness,

Fig. 9 is definite synoptic diagram that does not pass through the groove delivery rate of dilution step,

Figure 10 is the simulation synoptic diagram of dilution step,

Figure 11 is the synoptic diagram that quantitatively is input to tank diameter,

Figure 12 and 13 is the simulation synoptic diagram that flow into the flow of groove, and

Figure 14 is the principle schematic of the used regulation scheme of solution of the present invention.

Embodiment

Fig. 1 is the synoptic diagram of get the raw materials ready part or the raw material production and the dosing circuit of paper machine.Fig. 1 schematically represents paper machine 8 with a rectangle frame.At the melting process of Fig. 1, the machine material KM that will be transported to paper machine 8 is by three kinds of constitutive material OM1, and OM2 and OM3 form, and they are stirred in together mutually.For clarity, the dosing circuit of only intactly having showed first kind of constitutive material OM1.The dosing circuit of second kind of constitutive material OM2 and the third constitutive material OM3 and OM1's is substantially similar.The dosing circuit of constitutive material OM1 comprises the raw material tower 1 as the storagetank of constitutive material OM1.From raw material tower 1, constitutive material OM1 is transported to constitutive material groove 3 as the dosing groove along conveyance conduit 2 by first pump P1.From constitutive material groove 3, by second pump P2 constitutive material OM1 is transported to the main line of getting the raw materials ready 6 that leads to stirring/trough 5 along dosing pipeline 4, constitutive material OM2 and OM3 lead to main line 6 in the same way.Constitutive material OM1, OM2 and OM3 stir mutually in main line 6 beginning, but constitutive material OM1, and the more effective stirring of OM2 and OM3 only occurs in stirring/trough 5, uses there that stirring machine is with constitutive material OM1 efficiently, and OM2 and OM3 are stirred in together mutually.From stirring/trough 5, will be by the 3rd pump P3 by constitutive material OM1, the machine material KM that OM2 and OM3 form is transported to the short circulation of paper machine 8 and and then is transported to and is used to carry the top box of paper stock to the circuit pack of paper machine 8 along the machine amount of anticipating feed pipeline 7.The melting process of Fig. 1 comprises three kinds of constitutive materials that will mix mutually, but the quantity that is used for the constitutive material of paper manufacture obviously is variable, thereby can use one or more constitutive materials in the production of paper web.Typically, use 2 to 6 kinds of constitutive materials aborning.And Fig. 1 shows tank diameter and trough with the stirring/trough 5 of a merging, but they are distinct physically grooves usually.

Be input to paper machine circuit pack paper making raw material denseness typically between 0.3% and 1.5% the change.At the top of raw material tower 1 1a, new constitutive material OM1 is transported to here, the denseness of constitutive material OM1 typically from 10% to 14%.Therefore constitutive material OM1 must be through dilution before pumping into paper machine 8.Constitutive material OM1, OM2 and OM3 obtain diluting to the mode in the raw material by the adding dilution water and make the denseness that is transported to the machine material KM in the short circulation in due course be approximately 3%.Because dilution water typically uses isolated plain boiled water in the short circulation of paper machine 8, and uses usually and filter scraps of paper filtering fiber and subtitle substance and ash wherein.Constitutive material dilutes by several steps.Fig. 1 has showed that the stir spot DP6 that is used in behind the raw material tower 1 is transported to the dilution water of suction side of first pump P1 with the process of constitutive material OM1 dilution through variable valve V6 and dilution water delivery pipe DW6 immediately.At this stir spot the denseness rank of the denseness from 10% to 14% of raw material is diluted to 5% to 6% rank.After constitutive material groove 3, constitutive material OM1 further obtains dilution with process variable valve V4 and dilution water delivery pipe DW4 are transported to the suction side of second pump P2 at stir spot DP4 place dilution water, typically is diluted to 3.2% to 3.5% rank.The dosing circuit of constitutive material may comprise a plurality of continuous constitutive material grooves and stir spot afterwards thereof, but Fig. 1 has only showed a constitutive material groove 3 for simplicity's sake.Usually will the more than one raw material dilution step that goes on foot be arranged between the tank diameter that physically separates and the trough and carry out.Also can dilution water be joined dilution constitutive material OM1 among the constitutive material OM1 at stir spot DP7 place by recycle feed with by variable valve V7 and dilution water delivery pipe DW7 at 1b place, the bottom of raw material tower 1.

The size of raw material tower 1, constitutive material groove 3 and stirring/trough 5 depends on the quality of the paper of the productive capacity of paper machine 8 and production thereof, so the size of these grooves has very big variation.Groove used when used groove often changes than the grade of the paper of producing always when producing the paper of same grade is big.In the newspaper paper mill, typically use big raw material tower 1 and constitutive material groove 3.In this case, the capacity of raw material tower can reach thousands of cubic meters.In the good paper mill of the paper of producing multiple grade, raw material tower 1 or constitutive material groove 3 may only have tens of cubic metres capacity.Raw material tower 1 is more much bigger than constitutive material groove 3 and stirring/trough 5 usually.

When regulating the basis weight of paper, basis weight regulon 9 requires necessary fiber flow or machine material KM flow.Because desired (every square metre) grammes per square metre results from the fiber flow of paper machine, so the basis weight regulation scheme is based on formula

MS·L·BW＝F·Cs·k，

Wherein MS represents the machine speed [m/s] of reel machine,

L represents the coil paper fabric width [m] of reel machine,

Basis weight [the g/m that filler is caused by the dry weight of fiber or paper is not measured in BW representative ²],

The flow [l/s] of F machine representation material KM,

The denseness [g/l] of Cs machine representation material KM and

The significant loss in the long circulation of K representative consideration and the adjustment coefficient of the waste product part in short the circulation.

Because basis weight regulon 9 there is no tellings are the variation of raw material denseness in the future, therefore term " denseness with 3% " is joined in the traffic requirement of machine material KM, promptly be exactly under any circumstance all desired fiber flow to be imported to paper machine.Machine material KM is pumped into the short circulation of paper machine 8 from stirring/trough 5 usefulness pump P3 along the machine amount of anticipating supply pipe 7.From tank diameter, new raw material is pumped into trough, make raw material flow back into tank diameter from trough by overflowing the storehouse so always.This just guarantees that a stable machine material KM pumping state and machine hopper equally also keep quantitative machine material KM always.The surface elevation of tank diameter can change, and is in desired height with the flow that the surface elevation of measuring tank diameter is regulated the constitutive material that enters tank diameter with the surface of guaranteeing tank diameter.Tank diameter is the comprehensive groove of a dynamic duty, so the adjusting of tank diameter surface elevation is very slow and can cause overshoot, because work as for example 0.01m of delivery rate increase ³During/s, the flow that entered tank diameter before the surface is in desired height must be changed into 0.02m at once ³/ s.Like this, single machine material KM fluctuations in discharge will be increased to 0.2m during to raw material tower 1 gradually ³The height of/s, and present used control method can not be regulated the basis weight BW of coil paper fast enough with a kind of control mode.

The scheme that the present invention is used to control the operation of getting the raw materials ready of paper machine 8 utilizes the ability of Model Predictive Control (MPC) to calculate prediction to blank stock operation desired control information, promptly is exactly control command in the future.By move based on the data on flows of machine material KM and prediction determine to constitutive material OM1, the data on flows of OM2 and OM3 and prediction utilize these control that calculates predictions, the fluctuations in discharge of the machine material KM that is caused by basis weight regulon 9 that transmits backward along the work flow that is produced by the dosing circuit has been considered in the data on flows of machine material and prediction, thus the fluctuations in discharge that processes raw material the future that flow process adjusting utilization forward predicted of guiding.The prediction that this means available feed flow to a given groove indicates the material quantity that pumps from this groove.Except material flow, raw material dilution step and raw material denseness also need management, so the dynamic machining model can be predicted and considers the raw material consistency change that the material flow variation causes when regulating fiber flow and dilution with denseness data of transmitting forward along the dosing circuit and denseness.

The adjusting of basis weight that next, will be by paper web is given an example and is studied the enforcement of solution of the present invention.The operation of getting the raw materials ready can be divided into several parts, and, for brevity, described solution of the present invention is described by the get the raw materials ready sub-process of each several part of description.

When regulating the basis weight of paper, basis weight regulon 9 requires to obtain desired fiber flow or machine material KM flow from stirring/trough 5, begins dosing with one first control module CONTROL1 controller material KM from the basis weight regulon.The described first control module CONTROL1 comes the dosing of controller material KM by the value of setting of controlling the control of the 3rd pump P3 or Control Flow.Also can realize flow control by being installed in pump P3 variable valve afterwards.The valve of described special tectonic is called the basis weight valve and it is very accurate.In general, can carry out flow control or flow speed control by change valve openings, pump speed or rotation amount or all these known modes own.For example measure the basis weight BW of paper web immediately at the dry end of paper machine 8 before reel machine, basis weight regulon 9 requires necessary machine material KM flow based on desired basis weight BW value and the difference between the measured value thus.The first sub-process 10 has been formed in the flow control of machine material KM, has showed the synoptic diagram of this process at Fig. 2, has also showed the built-in function block diagram of the described first control module CONTROL1.The first step reads the denseness of the machine material KM that determines and predicts KMCsPr from discharge of stirring/trough and computation period in front.The denseness DT1 of measuring machine material KM then, it may be that total denseness also may be a fiber consistency, and based on machine material output denseness prediction KMCsPr and determined machine material denseness DT1 computing machine material denseness prediction DT1Pr.Measuring machine materials flow amount FT1 and reading machine materials flow amount control setting value FIC1 and the machine material fiber flow target value path KMFFTr that calculates by basis weight regulon 9 then, i.e. volume flow, wherein machine material denseness is 3%.In Model Predictive Control, be to predict that with the machine material denseness of being calculated DT1Pr, measured machine materials flow amount FT1, machine materials flow amount control setting value FIC1 and machine material fiber flow target value path KMFFTr are base computer material control information KMFmv among the MPC, this information may be the control information SIC1 of a new flow set value FIC1 or the speed of corresponding driver, and here Dui Ying driver is pump P3.Calculating new machine materials flow amount prediction KMFPr with measured machine materials flow amount FT1 and machine material control information KMFmv, promptly is exactly that how many machine material KM explanation has pump into paper machine 8 from stirring/trough 5.The MPC model comprises the reaction from the value of setting of PID control to flow.Because the known method of control engineering can be determined the reaction of how to move about control circuit when the value of setting changes, so this method is preferred scheme.According to the method for adjustment of known control circuit, can adjust control circuit and make it make described reaction.MPC makes flow indicator consistent in making the optimized control performance limited field of cost function that is changed generation by output error and control.Further machine materials flow amount prediction KMFPr relaying is given the second control module CONTROL2 of the dosing of control constitutive material OM1, an OM2 and OM3.

Fig. 2 does not show the dilution step between tank diameter and the trough, if use described step, can use dosing and the dilution scheme of the constitutive material OM1 that Fig. 4 and Fig. 5 provide.

The fluctuations in discharge that the control of modern paper machine basis weight is let it pass several future to flockmeter, these variations have been formed desired value path in the future.Based on this information and by calculating the denseness path in future of previous groove, scalable goes out the optimal flow rate path and realizes this path by flow control.Owing to provide information about the denseness path of the raw material that arrives stir spot in this method of dilution step, i.e. Jiang Lai denseness, and know the flow path and the consistency factor of the raw material that leaves this stir spot, the dilution water an of the best or the flow path of constitutive material just can be set, and this path is realized by flow control.The second raw-material concentration that replaces the machine material of raw material denseness, concentration as various fillers, adjuvant or chemicals in the raw material also can be controlled, promptly be exactly except or replace the raw material denseness, also available described solution of the present invention is controlled the concentration of filler in the raw material, adjuvant or chemicals.Also dilution water and various filler, adjuvant and chemicals can be joined same stir spot, this stir spot is usually before pump.Also filler, adjuvant or chemicals can be delivered into the inlet of the groove that does not comprise dilution.For brevity, in described figure, do not show filler, adjuvant or chemicals are joined in machine material or the constitutive material the perhaps measurement of their concentration in raw material.

Figure 14 has showed the principle schematic of Model Predictive Control.Model prediction control (MPC) is a kind of known method own in control engineering.The variable 13 that Figure 14 has schematically provided control information 12 or control variable 12 and will measure or control.Time point t0 is set with corresponding current time, can obtains historical data about control variable 12 and the described variable that will control 13 at this time point.Based on MPC by former control variable, measure, the disturbance variable of being predicted, it is the difference between current machining state and the desired state, and the ability of the so-called random or unconsummated response of processing model calculating processing process, solution of the present invention utilizes the ability of MPC to come the prediction of the output quantity of calculating processing process, the variable 13 that promptly will control exactly, therefore available MPC is by available control variable, can solve the process control problem by performance variable, make the process output variable, promptly scalable or controllable variable at each special time point as much as possible near desired value.That calculate and be the ladder variation by control and optimized mode after current time t0 in the several Control variation 16 that will carry out in the future to control variable 12.Will also can be used as the variable value that depends on the time by the desired value of the variable 13 of MPC control, promptly be exactly desired value path 14, shown in the example of Figure 14, can arrange this path to begin or reset from the value of the last variable of surveying 13.Figure 14 has also showed prediction 15a and the 15b that controllable variable 13 is calculated.If the situation that prediction 15b correspondence occurs when not taking new control measure.This is corresponding to original state in optimization.When optimization computation control changed 16, the result was exactly the output of description process and is the result's of control measure prediction 15a.First measurement is carried out in described control and the time point t0+dt after control interval dt calculates the control variation that makes new advances in the same way.Except processing model, therefore an element of Model Predictive Control is an optimization, wherein determines process control to the future of desired process based on the cost function of the quality of the disturbance variable of being predicted, description control or index and restrictive condition that optimization is provided with.Therefore, the utilization of the present invention ability that is included in the optimization cost function in the MPC technology is come the control that processing output error and controller are calculated changed and is provided compensation.This just can make the stable operation of process so-called soft with realization, promptly is exactly, and slowly Zuo Yong variation is by time-controlled variation well.Can obtain a large amount of documents and materials that relate to Model Predictive Control, D Clarke for example: based on the progress in the predictability control of model, Oxford Science Press, 1994 and R.Soeterboek: predictability is controlled a kind of harmonized programme, Prentice Hall, 1992.

The used dynamic raw material fabrication and processing model of described solution of the present invention itself is known fully.Donald P.Campbell for example: technology is dynamic, John Wiley ﹠amp; Sons, INC. described the ultimate principle of creating the dynamic model of Physical Processing in 1958.The invention provides a kind of will describe that the dynamic universal model of technology and Model Predictive Control combine solution.The present invention utilize dynamic model ability calculating processing flow, surface and denseness prediction and utilize last measurement result that the ability of model prediction control will predict processing and when control is calculated, utilize it to combine.In addition, model prediction control changes a compensation but also utilizes the historical data that changes about control in the previous Control Circulation that the successive control circulation is combined by not only giving control with a kind of intelligent manner.The present invention utilizes the ability of MPC to calculate to control information the i.e. prediction of control command.Utilize the control prediction by in technological process, passing on backward by basis weight control or such as the volume forecasting that the corresponding behave of change of rank causes, therefore the fluctuations in discharge in the control utilization of pumping processing stream future of being predicted forward, so the size of the amount that will pump is known in the prediction of the feed flow of groove from groove.Owing to can expect not only Control Flow but also control dilution process and denseness, so the measurable consistency change of proceeding with process and not only considered this consistency change in the fiber flow control but also in dilution control by the dynamic machining model.Like this.Just calculate and progressively proceed.

Fig. 3 has showed and has determined to enter the synoptic diagram of the OM1 of stirring/trough 5 to the total amount of the flow of the compound material of OM3, forms the second sub-process 20.Fig. 3 has also showed the block diagram of the built-in function of the second control module CONTROL2 that controls the second sub-process 20.The flow FT3 of measurement constitutive material in tank diameter _1-n, wherein n represents the numbering of constitutive material and the surface elevation rail curve LT2Tr of surface elevation LT2 and calculating stirring/trough 5.In addition, read in the machine materials flow amount prediction KMFPr that is calculated in the described first sub-process.Then calculate a common constitutive material flow indicator OMFTr with MPC.When calculate be transported to stirring/trough and the desired value path OMFTr of total flow the time, from before computation cycles read the measurement DT3 of constitutive material denseness _1-nDenseness prediction OMCsPr with the output of constitutive material groove _1-nCalculate the denseness of each constitutive material prediction DT3Pr with these _1-nBecause it is the ratio of the constitutive material that keeps desired that the quantity of given each constitutive material and target are known in expectation, so the formula (7) by providing in the back, (8a) are (8b) and (8c) went out the flow indicator OMFTr of each compound material based on former data computation _1-n

Fig. 4 has showed from the dosing process of the constitutive material OM1 of constitutive material groove 3, forms the sub-process 30 by one the 3rd control module CONTROL3 control.Fig. 4 has also showed the block diagram of the built-in function of the 3rd control module CONTROL3 that controls the 3rd sub-process 30.Fig. 4 has only showed the dosing process of compound material OM1 from dosing groove 3, but the principle that Fig. 4 showed is equally applicable to all compound material OM1, OM2 and OM3, so variable symbol lacks the subscript 1 of expression constitutive material OM1.The constitutive material flow indicator OMFTr that at first reads constitutive material flow FT3, the constitutive material flow control value of setting FIC3 and calculated by the second control module CONTROL2.Calculate constitutive material control information OMFmv by MPC based on measured compound material flow FT3, the constitutive material flow control value of setting FIC3 and constitutive material flow indicator OMFTr then, this information may be the new flow control value of setting FIC3 or to the control information SIC3 of relevant driver, here is the speed of pump P2.Calculate constitutive material volume forecasting FT3Pr based on compound material control information OMFmv and measured constitutive material flow FT3 then.The volume forecasting FT3Pr of constitutive material OM1 is sent to the 4th control module CONTROL4 of the dilution of controlling constitutive material OM1 and controls the five control module CONTROL5 of constitutive material OM1 from the dosing of raw material tower 1.

Fig. 5 has showed the dilution synoptic diagram of the constitutive material OM1 after constitutive material groove 3, forms the 4th sub-process 40 by the 4th control module CONTROL4 control.Fig. 5 has also showed the block diagram of the built-in function of the 4th control module of controlling the 4th sub-process.If there are several dilution step using, the process of each dilution step all is the same so.Fig. 5 equally also is applicable to constitutive material OM2 and OM3.At first read in the output denseness prediction OMCsPr of the constitutive material groove 3 that is calculated in the circulation of front.Measure the denseness of constitutive material then, this denseness or total denseness or fiber consistency are calculated DT3 and constitutive material curve D T3Tr, make denseness point to desired desired value whereby.DT3Tr also may be the consistency factor that sets in advance, and this index does not change as the function of time.Measure dilution water flow FT4 then, and the constitutive material volume forecasting FT3Pr that reads dilution water flow control setting value FIC4 and calculated by the 3rd control module CONTROL3.Pass through to use MPC to calculate the dilution water control information of the position of the dilution water pipeline DW4 that describes control valve V4 based on the prediction of constitutive material groove output denseness OMCsPr, constitutive material consistency curve DT3Tr, measured dilution water flow FT4, dilution water flow control setting value FIC4 and constitutive material volume forecasting FT3Pr then, or flow control value of setting as shown in Figure 5.Calculate dilution water flow prediction FT4Pr and it further is transferred to the five control module CONTROL5 of control from the dosing of the constitutive material OM1 of raw material tower 1 based on dilution water control information DFmv, dynamic machining model and measured dilution water flow FT4.Calculate denseness prediction DT3Pr in the same way and be transferred to the 3rd control module CONTROL3 and the processing model of the denseness of prediction stirring/trough 5 outputs.

Fig. 6 has showed from the dosing synoptic diagram of the constitutive material OM1 of raw material tower 1, has formed one the 5th sub-process by the 5th control module CONTROL5 control.Fig. 6 has also showed the block diagram of the built-in function of the 5th control module CONTROL5 that controls the 5th sub-process.Fig. 6 equally also is applicable to constitutive material OM2 and OM3.At first read the surface elevation LT1 of constitutive material groove 3 and come gauging surface height target path LT1Tr by the surface desired height of sensing that makes groove.Measure constitutive material flow FT5 then and read the constitutive material flow control value of setting FIC5.In addition, calculate constitutive material groove 3 delivery rates prediction FT3Pr-FT4Pr.Use MPC to calculate constitutive material flow control information OMFmv based on the desired value path LT1TR of measured constitutive material flow FT5, the constitutive material flow control value of setting FIC5, constitutive material groove 3 delivery rates prediction FT3Pr-FT4Pr and constitutive material 3 surface elevations then, this information may be the new flow control value of setting or the speed control information of corresponding driver (being meant pump P1 in this case).Calculate constitutive material volume forecasting FT5Pr and it is transferred to control and will measure one the 6th control module CONTROL6 of the dilution of the constitutive material OM1 that supplies with based on constitutive material control information OMFmv and measured constitutive material flow FT5 then from raw material tower 1.

Fig. 7 has showed the dilution of the constitutive material OM1 after raw material tower 1, forms one the 6th sub-process 60 by the 6th control module CONTROL6 control.Fig. 7 has also showed the block diagram of the built-in function of the 6th control module CONTROL6 that controls the 6th sub-process.Fig. 7 equally also is applicable to constitutive material OM2 and OM3.At first read in the output denseness prediction MTCsPr of the raw material tower 1 that calculates in the former circulation.The constitutive material denseness of measurement or total denseness or fiber consistency is calculated DT5 and constitutive material consistency curve DT5Tr then, makes denseness point to desired desired value thus.In addition, the constitutive material volume forecasting FT5Pr that measures dilution water flow FT6 and read dilution water flow control setting value FIC6 and determine by the 5th control module CONTROL5.Calculate dilution water control information DFmv with MPC then, this information is based on the prediction of the raw material tower that calculated output denseness MTCsPr, constitutive material index consistency curve DT5Tr, measured dilution water flow FT6, dilution water flow control setting value FIC6 and constitutive material volume forecasting FT5Pr, and here reposition or the flow control FIC6 value of setting of the dilution water pipeline DW6 of this information explanation control valve V6.Calculate dilution water flow prediction FT6Pr based on dilution water control information DFmv and measured dilution water flow FT6.Also calculate after dilution step denseness prediction DT5Pr, and it is transferred to the processing model of prediction output denseness behind stir spot denseness.Also dilution water flow prediction FT6Pr and measured dilution water flow FT6 further are transferred to the 7th control module CONTROL7 of dilution of the raw material of the bottom 1b that is controlled at raw material tower 1, if use such dilution at the bottom of raw material tower 1 1b.The function of the 7th control module CONTROL7 is corresponding with the function of the 6th control module CONTROL6.By with indirectly or the method for the statistics denseness of measuring the constitutive material in the raw material tower 1 consider the output denseness prediction MTCsPr that is used for determining raw material tower 1 at the flow of the bottom of raw material tower 1 1b dilution water.

Fig. 8 is the block scheme that calculates the prediction of constitutive material OM1 denseness.Fig. 8 equally also is applicable to constitutive material OM2 and OM3.The first step, reading flow is to the volume forecasting FT5Pr and the denseness prediction DT5Pr of the raw material of raw material tank 3.Measure constitutive material flow FT5 and constitutive material denseness DT5 simultaneously.Calculate prediction of constitutive material groove 3 feeding denseness or fiber volume forecasting F5CsinPr with these four variablees.Measure the surface elevation LT1 of constitutive material groove 3 and read constitutive material groove 3 surface elevations prediction LT1Pr and the constitutive material volume forecasting FT3Pr and the volume forecasting FT4Pr that behind constitutive material groove 3, will join the dilution water in the raw material.Calculate the capacity predict VOMsPr and constitutive material groove 3 denseness of constitutive material groove 3 with these four variablees and constitutive material groove feeding denseness prediction F5CsinPr and predict OMCsPr, and predict that with these two variablees and constitutive material volume forecasting FT3Pr, dilution water flow FT4Pr and measured constitutive material denseness DT3 calculate the constitutive material denseness prediction DT3CsPr of constitutive material groove 3 output terminals.

Fig. 9 be determine groove delivery rate synoptic diagram, especially trough or at the last constitutive material groove that does not have on the dosing circuit of dilution step.Can utilize following formula to calculate the denseness of the feed stream of from groove, discharging at measurement point

Cs(t)＝Csto(t-td1)-Csto(t0-td1)+Cs(t0)，(2)

Wherein Cs (t) represents the output denseness [g/l] of groove,

Raw material denseness [g/l] in Csto (t) the expression groove,

T0 represents the time point that calculates,

Td1 represents the raw material time-delay that point is caused from the concentrated flow to the consistency measurement, and

T is illustrated in and puts the t0 time point in future afterwards computing time.Available formula (2) is corrected the influence of the mistake of processing model.Flow in stir spot desired future can calculate by following formula

F(t)＝FF(t)/Cs(t-td2)，t _max＞t＞t0，(3)

Wherein td2 represent from the consistency measurement point flow to time-delay that stir spot SP causes and

F (t) expression delivery rate [l/s] and

The fiber flow that FF (t) expression is desired.

Figure 10 is the synoptic diagram of dilution step simulation.The output denseness of groove can obtain by following formula

$\mathrm{Cstou}(t0-\mathrm{td}3-\mathrm{td}4)=\frac{\mathrm{Cs}\left(t0\right)F(t0-\mathrm{td}4)}{F(t0-\mathrm{td}4)-F2(t0-\mathrm{td}4)},---\left(4\right)$

Cstou (t)=Csto (t)-Csto (t0-td3-td4)+Cstou (t0-td3-td4) (5) and

$F2\left(t\right)=F\left(t\right)(1-\frac{\mathrm{Cs}(t+\mathrm{td}2)}{\mathrm{Cstou}(t-\mathrm{td}1)}),---\left(6\right)$

Wherein Cstou (t) represents the output denseness [g/l] of groove,

Cs (t) expression output denseness [g/l],

The denseness [g/l] of Csto (t) expression groove,

F (t) represents delivery rate [l/s],

F2 (t) is illustrated in the flow [l/s] of the dilution water of dilution step,

T0 represents the time point that calculates,

Td3 represents that raw material flow to the time-delay that stir spot causes from groove,

Td4 represents to flow to the time-delay that the consistency measurement point causes from stir spot, and

T is illustrated in the time point of putting the future behind the t0 computing time.

Formula (4) to (6) is used for determining the rank of groove output denseness when calculating beginning.This rank is calibrated described measurement result by keeping mass balance.The output denseness obtains from the groove denseness prediction of the groove consistency change considering to be predicted.

Figure 11 and following formula (7) and (8a) to (8c) schematic presentation enter the dosing of tank diameter:

$X\left(t\right)=\frac{F\left(t\right)}{\frac{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C0282256500441.png"\; state="\{\{state\}\}">K</figure-callout>}1}{\mathrm{Cs}1(t-\mathrm{td}1)}+\frac{\mathrm{<figure-callout\; id="2"\; label="K"\; filenames="C0282256500431.png,C0282256500451.png"\; state="\{\{state\}\}">K</figure-callout>}2}{\mathrm{Cs}2(t-\mathrm{td}2)}+\frac{\mathrm{<figure-callout\; id="3"\; label="K"\; filenames="C0282256500411.png,C0282256500431.png"\; state="\{\{state\}\}">K</figure-callout>}3}{\mathrm{Cs}3(t-\mathrm{td}3)}},---\left(7\right)$

$F1\left(t\right)=\frac{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C0282256500441.png"\; state="\{\{state\}\}">K</figure-callout>}1}{\mathrm{Cs}1(t-\mathrm{td}1)}X\left(t\right),---\left(8a\right)$

$F2\left(t\right)=\frac{\mathrm{<figure-callout\; id="2"\; label="K"\; filenames="C0282256500431.png,C0282256500451.png"\; state="\{\{state\}\}">K</figure-callout>}2}{\mathrm{Cs}1(t-\mathrm{td}1)}X\left(t\right),---\left(8b\right)$

$F3\left(t\right)=\frac{\mathrm{<figure-callout\; id="3"\; label="K"\; filenames="C0282256500411.png,C0282256500431.png"\; state="\{\{state\}\}">K</figure-callout>}3}{\mathrm{Cs}1(t-\mathrm{td}1)}X\left(t\right),---\left(8c\right)$

Wherein X (t) is based on the determined total fiber flow of feeding denseness,

F (t) is desired total flow [l/s],

K1 is a desired fiber shared mark in constitutive material OM1

F1 (t) is the flow [l/s] of constitutive material OM1 of the shared mark K1 of fiber of corresponding constitutive material OM1

K2 be desired fiber in constitutive material OM2 shared mark and

F2 (t) is the flow [l/s] of constitutive material OM2 of the shared mark K2 of fiber of corresponding constitutive material OM2

K3 be desired fiber in constitutive material OM3 shared mark and

F3 (t) is the flow [l/s] of constitutive material OM3 of the shared mark K3 of fiber of corresponding constitutive material OM3

During quantitatively importing raw material for tank diameter, can determine simultaneously that desired constitutive material flow is feasible satisfies the shared mark index of fiber in total flow indicator and desired each constitutive material simultaneously.Yet total consistency factor can not be met.The formula that is provided do not have to consider such as input of filtering the scraps of paper 11 and the variation between the return flow, but they are eliminated in the surface elevation management of groove, allows our suppose the to come in and go out fiber flow that filters the scraps of paper 11 identical always.

Figure 12 and Figure 13 have showed to the simulation synoptic diagram of the flow of a groove by means of constitutive material groove 3.Analogue flow rate can pass through formula

$\mathrm{Fi}\left(t\right)=\mathrm{Fo}\left(t\right)+A\left(\mathrm{LTr}\left(t\right)\right)\frac{\mathrm{dLTr}\left(t\right)}{\mathrm{dt}},---\left(9\right)$

LTr(t)＝f(Lsp，L(t0))，t _max＞t＞t0，(10)

Wherein Fi (t) is the flow [l/s] of input slot,

Fo (t) is the flow [l/s] from groove output,

L (t) is the surface elevation [m] in the groove,

LTr (t) is the desired change curve to surface elevation,

Lsp is desired surface elevation, and

A is the area at height L place groove.

According to the difference between measured value and the set value, can use different objective function LTr (t).If have unknown disturbance flow and process to be related in addition, can eliminate the influence of this disturbance by known control engineering method itself.

Therefore solution of the present invention utilizes conventional processing operation, and the solution that can pass through to be provided is regulated all melting processes.Described scheme also is highly suitable for management of water circulation, therefore can manage the water yield and flow in the groove by the input and output of management groove.The ability that described scheme utilization belongs to the optimization cost function of MPC technology provides compensation to the control variation of processing the calculating of output error and controller.This just allows process operation stable and can access so-called softly, promptly slowly works, but control measure timely.The scheme that is provided is the operation of control measurement, driver and adjusting exactly, and can be under the situation that the mode that process is not predicted according to model is moved the call operation person.

Therefore, the filtration scraps of paper 11 or another kind of fibrous recovery unit shown in Figure 1 are almost all relevant with each tank diameter.Filter the raw material (sweetener) that the scraps of paper 11 require long fibre matter that particulate and filler are combined together to form.Denseness and flow that the scraps of paper 11 are filtered in the turnover of the solution that provided hypothesis are balances, promptly be exactly flow summation and fiber flow summation be zero.If situation is not like this, in the calculating of the second control module CONTROL2, will consider flow and their denseness so.

Accompanying drawing is just hoped with relevant instructions will illustrate invention thought.Details of the present invention may change within the scope of the claims to some extent.Therefore solution clearly of the present invention can be used in the control of getting the raw materials ready continuously, promptly is exactly, and does not just want to use it under the situation of variation, such as basis weight control or relate to other change of rank of the product produced.And the solution that is provided not only can be used in the production of raw material of paper and plate but also can be used on other link process, the change of denseness and concentration and regulate the key factor of forming process in these processes.Be used for that the control module of blank stock all preferably uses microprocessor or based on the data processor unit of signal processor, wherein the desired function of at least a portion can be carried out by software.Also may only use single control module to come blank stock operation and it can carry out all essential functions, but these functions preferably are assigned to the several separate control module.Flow, denseness and concentration can be measured by utilizing any sensor and other known measuring equipments own.

Claims (45)

1. method that is used to control (stock preparation) operation of getting the raw materials ready of paper machine, described melting process is configured to from one or more constitutive materials (OM1, OM2, OM3) in by they being stirred mutually the machine material of producing in the short circulation that will be transported to paper machine (8) (KM), and described melting process comprises a plurality of continuous stir spot (DP4, DP6), in stir spot with constitutive material (OM1, OM2, OM3) stir mutually, second starting material of machine material are joined raw material (KM, OM1, OM2, OM3) in and/or by with dilution water and raw material (KM, OM1, OM2, OM3) raw material (KM is diluted in mixing, OM1, OM2, OM3), and in the method:

Regulate and arrive stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, flow OM3) and/or denseness; And/or

Adjusting leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, flow OM3) (FT1, FT3, FT5) and denseness (DT1, DT3, DT5),

It is characterized in that

Determine to arrive stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, denseness OM3) and determine to leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, denseness OM3) (DT1, DT3, DT5),

Determine to arrive stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, flow OM3) and leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, flow OM3) (FT1, FT3, FT5),

Determine to arrive stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, the denseness prediction of denseness OM3) (KMCsPr, OMCsPr),

Determine to leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, flow OM3) (FT1, FT3, volume forecasting FT5) (KMFPr, FT3Pr, FT5Pr),

Determine to arrive stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, the consistency factor of denseness OM3) and/or determine to leave stir spot (DP4, DP6) raw material (KM, OM1, OM2, denseness (DT1 OM3), DT3, and consistency factor DT5) (DT3Tr, DT5Tr)

Determine to arrive stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, the flow indicator of flow OM3) and/or leave stir spot (DP4, DP6) raw material (KM, OM1, OM2, flow (FT1 OM3), FT3, flow indicator FT5) (KMFFTr, OMFTr), and

Based on to leaving stir spot (DP4, raw material DP6) (KM, OM1, OM2, volume forecasting OM3) (KMFPr, FT3Pr, FT5Pr) and/or to arriving stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, OM3) (KMCsPr OMCsPr), regulates arriving stir spot (DP4 in denseness prediction, DP6) one or more raw materials (KM, OM1, OM2, flow OM3) and/or denseness, so make and arrive stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, OM3) flow follows determined flow indicator and/or denseness is followed determined consistency factor, and/or

Based on to leaving stir spot (DP4, raw material DP6) (KM, OM1, OM2, volume forecasting OM3) (KMFPr, FT3Pr, FT5Pr) and/or to arriving stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, and denseness prediction OM3) (KMCsPr, OMCsPr), stir spot (DP4, raw material DP6) (KM, OM1 are left in adjusting, OM2, flow OM3) (FT1, FT3, FT5) and denseness (DT1, DT3, DT5), so make and leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, OM3) (FT1, FT3 FT5) follow determined flow indicator (KMFFTr to flow, OMFTr) and denseness (DT1, DT3, DT5) follow determined consistency factor (DT3Tr, DT5Tr).

2. the method for claim 1, second starting material that it is characterized in that the machine material are filler, adjuvant or chemicals.

3. method as claimed in claim 1 or 2 is characterized in that controlling in the following manner machine material (KM) flow that comes from the stirring/trough (5) of getting the raw materials ready:

Determine machine material (KM) flow control information (KMFmv) based on the prediction of described machine material (KM) denseness (KMCsPr), described machine material (KM) flow (FT1), machine material (KM) flow control value of setting (FIC1) and machine material (KM) fiber flow target value path (KMFFTr), and

Control comes from machine material (KM) flow of stirring/trough (5) based on described machine material (KM) flow control information (KMFmv).

4. method as claimed in claim 3 is characterized in that

Determine described machine material (KM) volume forecasting (KMFPr) based on measured machine material (KM) flow (FT1) and described machine material (KM) control information (KMFmv), and

Based on described machine material (KM) volume forecasting (KMFPr) control described constitutive material (OM1, OM2, OM3) and/or the second raw-material dosing of described machine material.

5. method as claimed in claim 4 is characterized in that based on the constitutive material (OM1, OM2, flow (FT3 OM3) that measure _1-N), the surface elevation path (LT2Tr) and machine material (KM) volume forecasting (KMFPr) of stirring/trough (5) determine described constitutive material (OM1, OM2, total flow indicator (OMFTr) OM3).

6. method as claimed in claim 5 is characterized in that the output denseness prediction (OMCsPr based on constitutive material groove (3) _1-n) and measured constitutive material (OM1, OM2, OM3) denseness (DT3 _1-N) determine each constitutive material (OM1, OM2, denseness prediction (DT3Pr OM3) _1-n).

7. method as claimed in claim 6 is characterized in that based on described each constitutive material (OM1, OM2, denseness prediction (DT3Pr OM3) _1-n) and described constitutive material (total flow index (OMFTr) OM3) is determined each constitutive material (OM1, OM2, flow indicator (OMFTr OM3) for OM1, OM2 _1-n).

8. method as claimed in claim 7, it is characterized in that controlling in the following manner each constitutive material (OM1, OM2, OM3) from the dosing of constitutive material groove (3):

Based on described constitutive material (OM1 from constitutive material groove (3), OM2, OM3) flow (FT3), constitutive material (OM1, OM2, flow control value of setting (FIC3) OM3) and described constitutive material (OM1, OM2, OM3) flow indicator (OMFTr) is determined constitutive material (OM1, OM2, flow control information OM3) (OMFmv), and

((OM1, OM2 is OM3) from the dosing of constitutive material groove (3) for flow control information OM3) (OMFmv) control constitutive material for OM1, OM2 based on described constitutive material.

9. method as claimed in claim 8, it is characterized in that based on described constitutive material (OM1, OM2, OM3) flow control information (OMFmv) and measured constitutive material (OM1, OM2, OM3) flow (FT3) is determined from constitutive material (OM1, OM2, volume forecasting OM3) (FT3Pr) of constitutive material groove (3) outflow.

10. method as claimed in claim 9 is characterized in that (constitutive material is controlled in volume forecasting OM3) (FT3Pr), and (OM1, OM2 is OM3) from the dosing of raw material tower (1) for OM1, OM2 based on described constitutive material.

11. as claim 9 or 10 described methods, it is characterized in that controlling in the following manner the constitutive material that flows out from constitutive material groove (3) (OM1, OM2, dilution OM3):

Based on the prediction of described constitutive material groove (3) output denseness (OMCsPr), described constitutive material (OM1, OM2, OM3) denseness (DT3) desired value path (DT3Tr), measured dilution water flow (FT4), dilution water flow control setting value (FIC4) and described constitutive material (OM1, OM2, OM3) dilution water flow control information (DFmv) is determined in volume forecasting (FT3Pr), and

Control the dilution water flow based on determined dilution water flow control information (DFmv).

12. method as claimed in claim 11 is characterized in that determining dilution water flow prediction (FT4Pr) based on described dilution water flow control information (DFmv) and measured dilution water flow (FT4).

13. method as claimed in claim 12 is characterized in that (OM1, OM2 is OM3) from the dosing of the raw material tower (1) of getting the raw materials ready based on described dilution water flow prediction (FT4Pr) control constitutive material.

14. method as claimed in claim 13, it is characterized in that controlling in the following manner constitutive material (OM1, OM2, OM3) from the dosing of raw material tower (1):

Based on the constitutive material (OM1 that flows out from raw material tower (1), OM2, OM3) flow (FT5), constitutive material (OM1, OM2, OM3) flow control value of setting (FIC5), to leaving the constitutive material (OM1 of constitutive material groove (3), OM2, the surface elevation desired value path (LT1Tr) of volume forecasting OM3) (FT3Pr-FT4Pr) and described constitutive material groove (3) determines to flow to from raw material tower (1) constitutive material (OM1 of constitutive material groove (3), OM2, OM3) control information (OMFmv), and

((OM1, OM2 is OM3) from the dosing of raw material tower (1) for control information OM3) (OMFmv) control constitutive material for OM1, OM2 based on the constitutive material that flows to constitutive material groove (3) from raw material tower (1).

15. method as claimed in claim 14, it is characterized in that based on constitutive material (OM1 from raw material tower (1) outflow, OM2, OM3) control information (OMFmv) and measured constitutive material (OM1 from raw material tower (1) outflow, OM2, OM3) flow (FT5) determines to flow to from raw material tower (1) constitutive material (OM1, OM2, volume forecasting OM3) (FT5Pr) of constitutive material groove (3).

16. method as claimed in claim 15, it is characterized in that controlling in the following manner with the dilution water dilution from raw material tower (1) flow to constitutive material groove (3) constitutive material (OM1, OM2, OM3) with constitutive material (OM1, OM2 OM3) mix:

Based on constitutive material (OM1 to flowing out from raw material tower (1), OM2, OM3) denseness prediction (MTCsPr), the constitutive material (OM1 that flows out from raw material tower (1), OM2, OM3) denseness desired value path (DT5Tr), measured dilution water flow (FT6), dilution water flow control setting value (FIC6) and constitutive material (OM1 to flowing out from raw material tower (1), OM2, dilution water flow control information (DFmv) is determined in volume forecasting OM3) (FT5Pr), and

Based on determined dilution water flow control information (DFmv) control dilution water flow (FT6).

17. the described method of each claim as described above, it is characterized in that by measure or indirectly by use the processing model of describing get the raw materials ready an operation or its part determine the arrival stir spot (DP4, DP6) or leave stir spot (DP4, one or more raw materials (KM DP6), OM1, OM2, denseness OM3) (DT1, DT3, DT5) or raw material (KM, OM1, OM2, OM3) the second raw-material concentration of middle machine material.

18. the described method of each claim as described above, it is characterized in that by measurement or indirectly by using the processing model of describing get the raw materials ready an operation or its part to determine to arrive stir spot (DP4, DP6) or leave stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, flow (FT1 OM3), FT3, FT5).

19. the described method of each claim is characterized in that comprising that by use processing model and the optimized model predictive control method of describing get the raw materials ready an operation or its part are definite as described above

Comprise to machine material (KM), constitutive material (OM1, OM2, OM3) or the control information of the controlled step in several future of the second raw-material flow of machine material,

To machine material (KM), constitutive material (OM1, OM2, OM3) or the flow target value path of the second raw-material flow of machine material (KMFFTr, OMFTr),

The surface elevation desired value path of stirring/trough (5) or constitutive material groove (3) (LT1Tr, LT2Tr)

And/or (FT4, the control information of the several Control step in future FT6) is so that the cost function relevant with optimization minimizes to comprise the dilution water flow.

20. the described method of each claim is characterized in that described processing model is the dynamic machining model as described above.

21. device that is used to control the operation of getting the raw materials ready of paper machine, wherein melting process be configured to from one or more constitutive materials (OM1, OM2, OM3) in by they being stirred mutually the machine material of producing in the short circulation that will be transported to paper machine (8) (KM), and melting process comprises a plurality of continuous stir spot (DP4, DP6), in stir spot with constitutive material (OM1, OM2, OM3) stir mutually, second starting material of machine material are joined raw material (KM, OM1, OM2, OM3) in and/or by with dilution water and raw material (KM, OM1, OM2, OM3) raw material (KM is diluted in mixing, OM1, OM2, OM3), described device comprises

Be used for regulate arriving stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, flow OM3) and/or the unit of denseness, and/or

Be used for regulating leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, flow OM3) and the unit of denseness,

It is characterized in that described device comprises:

Be used for determine arriving stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, the unit of denseness OM3) and be used to determine to leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, denseness OM3) (DT1, DT3, unit DT5),

Be used for determine arriving stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, flow OM3) and leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, flow OM3) (FT1, FT3, unit FT5),

Be used for determining to arrive stir spot (DP4, one or more raw materials DP6) (KM, OM1, OM2, the OM3) denseness of denseness prediction (KMCsPr, unit OMCsPr),

Be used for determining to leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, flow OM3) (FT1, FT3, volume forecasting FT5) (KMFPr, FT3Pr, unit FT5Pr),

Be used for determining to arrive stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, the unit of the consistency factor of denseness OM3) and/or be used to determine to leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, OM3) denseness (DT1, DT3, consistency factor (DT3Tr DT5), DT5Tr) unit

Be used for determining to arrive stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, the flow indicator of flow OM3) and/or leave stir spot (DP4, raw material DP6) (KM, OM1, OM2, the flow indicator of flow OM3) (KMFFTr, unit OMFTr), and

Be used for based on to leaving stir spot (DP4, raw material DP6) (KM, OM1, OM2, volume forecasting OM3) (KMFPr, FT3Pr is FT5Pr) and/or to arriving stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, denseness prediction (KMCsPr OM3), OMCsPr) regulate arrival stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, OM3) flow and/or denseness, make and arrive stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, flow OM3) follow determined flow indicator and/or denseness follow determined consistency factor the unit and/or

Be used for based on to leaving stir spot (DP4, raw material DP6) (KM, OM1, OM2, volume forecasting OM3) (KMFPr, FT3Pr, FT5Pr) and/or to arriving stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, and denseness prediction OM3) (KMCsPr, OMCsPr) stir spot (DP4 is left in adjusting, DP6) raw material (KM, OM1, OM2, flow OM3) (FT1, FT3, FT5) and denseness (DT1, DT3 DT5), makes and leaves stir spot (DP4, DP6) raw material (KM, OM1, OM2, flow (FT1 OM3), FT3, FT5) follow determined flow indicator (KMFFTr, OMFTr) and denseness (DT1, DT3, DT5) follow determined consistency factor (DT3Tr, unit DT5Tr).

22. device as claimed in claim 21, second starting material that it is characterized in that the machine material are filler, adjuvant or chemicals.

23., it is characterized in that comprising with lower unit and dispose the flow that the control of this device comes from the machine material (KM) of the stirring/trough (5) of getting the raw materials ready by this device as claim 21 or 22 described devices:

Be used for determining the unit of machine material (KM) flow control information (KMFmv) based on denseness prediction (KMCsPr), described machine material (KM) flow (FT1), machine material (KM) flow control value of setting (FIC1) and machine material (KM) the fiber flow target value path (KMFFTr) of described machine material (KM), and

Be used for based on the unit of described machine material (KM) flow control information (KMFmv) control from machine material (KM) flow of stirring/trough (5).

24. device as claimed in claim 23 is characterized in that this device comprises:

Be used for determining the unit of the volume forecasting (KMFPr) of machine material (KM) based on measured machine material (KM) flow (FT1) and described machine material (KM) control information (KMFmv), and

Be used for based on described machine material (KM) volume forecasting (KMFPr) control constitutive material (OM1, OM2, OM3) and/or the unit of the second raw-material dosing of machine material.

25. device as claimed in claim 24 is characterized in that this device comprises to be used for based on measured constitutive material (OM1, OM2, flow (FT3 OM3) _1-n), the surface elevation desired value path (LT2Tr) and machine material (KM) volume forecasting (KMFPr) of stirring/trough (5) determine constitutive material (OM1, OM2, the unit of total flow index (OMFTr) OM3).

26. device as claimed in claim 25 is characterized in that this device comprises that being used for exporting denseness based on constitutive material groove (3) predicts (OMCsPr _1-n) and measured constitutive material (OM1, OM2, OM3) denseness (DT3 _1-n) determine each constitutive material (OM1,0M2, denseness prediction (DT3Pr 0M3) _1-n) the unit.

27. device as claimed in claim 26 is characterized in that described device comprises to be used for based on to each constitutive material (OM1, OM2, OM3) denseness prediction (DT3Pr _1-n) and described constitutive material (total flow index (OMFTr) OM3) is determined each constitutive material (OM1, OM2, flow indicator (OMFTr OM3) for OM1, OM2 _1-n) the unit.

28. device as claimed in claim 27, it is characterized in that this device comprise be used for controlling in the following manner each constitutive material (OM1, OM2, OM3) from the unit of the dosing of constitutive material groove (3):

Based on the described constitutive material (OM1 that comes from constitutive material groove (3), OM2, OM3) flow (FT3), constitutive material (OM1, OM2, flow control value of setting (FIC3) OM3) and constitutive material (OM1, OM2, OM3) flow indicator (OMFTr) is determined constitutive material (OM1, OM2, flow control information OM3) (OMFmv), and

(flow control information OM3) (OMFmv) control comes from constitutive material (OM1, OM2, dosing OM3) of constitutive material groove (3) for OM1, OM2 based on described constitutive material.

29. device as claimed in claim 28, it is characterized in that this device comprises is used for based on described constitutive material (OM1, OM2, OM3) flow control information (OMFmv) and measured constitutive material (OM1, OM2, OM3) flow (FT3) is determined from constitutive material (OM1, OM2, the unit of volume forecasting OM3) (FT3Pr) of constitutive material groove (3) outflow.

30. device as claimed in claim 29, it is characterized in that described device comprises is used for that (constitutive material (OM1 that comes from raw material tower (1) is controlled in volume forecasting OM3) (FT3Pr) for OM1, OM2 based on described constitutive material, OM2, the unit of dosing OM3).

31. as claim 29 or 30 described devices, it is characterized in that this device comprise be used for controlling in the following manner the constitutive material that flows out from constitutive material groove (3) with the dilution water dilution (OM1, OM2, unit OM3):

Based on the prediction of described constitutive material groove (3) output denseness (OMCsPr), described constitutive material (OM1, OM2, OM3) denseness (DT3) desired value path (DT3Tr), measured dilution water flow (FT4), dilution water flow control setting value (FIC4) and described constitutive material (OM1, OM2, OM3) dilution water flow control information (DFmv) is determined in volume forecasting (FT3Pr), and

Control the dilution water flow based on determined dilution water flow control information (DFmv).

32. device as claimed in claim 31 is characterized in that this device comprises the unit that is used for determining based on described dilution water flow control information (DFmv) and measured dilution water flow (FT4) dilution water flow prediction (FT4Pr).

33. device as claimed in claim 32 is characterized in that this device comprises constitutive material (OM1, OM2, the unit of dosing OM3) that is used for coming from based on described dilution water flow prediction (FT4Pr) control the raw material tower (1) of getting the raw materials ready.

34. device as claimed in claim 33, it is characterized in that this device comprise be used for controlling in the following manner the constitutive material that comes from raw material tower (1) (OM1, OM2, the unit of dosing OM3):

Based on the described constitutive material (OM1 that flows out from raw material tower (1), OM2, OM3) flow (FT5), constitutive material (OM1, OM2, OM3) flow control value of setting (FIC5), to leaving the constitutive material (OM1 of constitutive material groove (3), OM2, the surface elevation desired value path (LT1Tr) of volume forecasting OM3) (FT3Pr-FT4Pr) and described constitutive material groove (3) determines to flow to from raw material tower (1) constitutive material (OM1 of constitutive material groove (3), OM2, OM3) control information (OMFmv), and

(control information OM3) (OMFmv) control comes from (OM1, OM2, OM3) dosing of the constitutive material of raw material tower (1) for OM1, OM2 based on the constitutive material that flows to constitutive material groove (3) from raw material tower (1).

35. device as claimed in claim 34, it is characterized in that described device comprises the constitutive material (OM1 that is used for based on from raw material tower (1) outflow, OM2, OM3) control information (OMFmv) and measured constitutive material (OM1 from raw material tower (1) outflow, OM2, OM3) flow (FT5) determines to flow to from raw material tower (1) constitutive material (OM1, OM2, the unit of volume forecasting OM3) (FT5Pr) of constitutive material groove (3).

36. device as claimed in claim 35, it is characterized in that this device comprise be used for controlling in the following manner with the dilution water dilution from raw material tower (1) flow to constitutive material groove (3) constitutive material (OM1, OM2, OM3) with constitutive material (OM1, OM2, OM3) unit of Hun Heing:

Based on constitutive material (OM1 to flowing out from raw material tower (1), OM2, OM3) denseness prediction (MTCsPr), the constitutive material (OM1 that flows out from raw material tower (1), OM2, OM3) denseness desired value path (DT5Tr), measured dilution water flow (FT6), dilution water flow control setting value (FIC6) and constitutive material (OM1 to flowing out from raw material tower (1), OM2, dilution water flow control information (DFmv) is determined in volume forecasting OM3) (FT5Pr), and

Based on determined dilution water flow control information (DFmv) control dilution water flow (FT6).

37. as each described device in the claim 21 to 36, it is characterized in that this device comprise be used for by measure or indirectly by use the processing model of describing get the raw materials ready an operation or its part determine the arrival stir spot (DP4, DP6) or leave stir spot (DP4, one or more raw materials (KM DP6), OM1, OM2, denseness OM3) (DT1, DT3, DT5) or raw material (KM, OM1, OM2, OM3) unit of the second raw-material concentration of middle machine material.

38. as each described device in the claim 21 to 37, it is characterized in that this device comprises is used for by measuring or indirectly by using the processing model of describing get the raw materials ready an operation or its part to determine arrival stir spot (DP4, DP6) or leave stir spot (DP4, DP6) one or more raw materials (KM, OM1, OM2, flow (FT1 OM3), FT3, unit FT5).

39., it is characterized in that this device comprises and be used for comprising that by use processing model and the optimized model predictive control method of describing get the raw materials ready an operation or its part determine as each described device in the claim 21 to 38

Comprise to machine material (KM), constitutive material (OM1, OM2, OM3) or the control information of the controlled step in several future of second kind of raw-material flow of machine material,

To machine material (KM), constitutive material (OM1, OM2, OM3) or the flow target value path of second flow of raw materials of machine material (KMFFTr, OMFTr),

The surface elevation desired value path of stirring/trough (5) or constitutive material groove (3) (LT1Tr, LT2Tr),

And/or (FT4, the control information of the controlled step in several future FT6) is so that the minimized unit of the cost function relevant with optimization to comprise the dilution water flow.

40., it is characterized in that described processing model is the dynamic machining model as each described device in the claim 21 to 39.

41. method that is used to control the operation of getting the raw materials ready of paper machine, described melting process is configured to from one or more constitutive materials (OM1, OM2 will be transported to machine material (KM) in the short circulation of paper machine by they being stirred mutually generation in OM3), and in this melting process second starting material of machine material is joined raw material (KM, OM1, OM2, OM3) in and/or by with dilution water and raw material (KM, OM1, OM2, OM3) raw material (KM, OM1, OM2 are diluted in mixing, OM3), and in the method, be adjusted in the dosing circuit of getting the raw materials ready raw material (KM, OM1, the OM2 that flows forward, OM3) flow (FT1, FT3, FT5) and denseness (DT1, DT3, DT5)

It is characterized in that

Determine data on flows (FT1) and the volume forecasting (KMFPr) of machine material (KM),

Determine one or more constitutive materials (OM1, OM2, data on flows OM3) (FT3, FT5) and volume forecasting (FT3Pr, FT5Pr),

Transmit constitutive material (OM1, OM2, data on flows (FT3 OM3) backward along the dosing circuit of getting the raw materials ready, FT5) and volume forecasting (FT3Pr, FT5Pr), so feasible control along the fluctuations in discharge in the future that the adjusting utilization of dosing circuit material flow forward predicts

Determine one or more constitutive materials (OM1, OM2, denseness data OM3) and (DT3, DT5) and denseness prediction (DT3Pr, DT5Pr), and

Transmit constitutive material (OM1 forward along the dosing circuit of getting the raw materials ready, OM2, denseness data OM3) (DT3, DT5) predict with denseness (DT3Pr, DT5Pr), so make and control raw material (KM, OM1, OM2, denseness (DT1 OM3), DT3, the consistency change in the future that adjusting utilization DT5) is predicted.

42. method as claimed in claim 41, second starting material that it is characterized in that the machine material are filler, adjuvant or chemicals.

43. method that is used to control the operation of getting the raw materials ready of paper machine, described melting process be configured to from one or more constitutive materials (OM1, OM2, OM3) in by they being stirred mutually the machine material of producing in the short circulation that will be transported to paper machine (8) (KM), and melting process comprises a plurality of continuous stir spot (DP4, DP6), in stir spot with constitutive material (OM1, OM2, OM3) stir mutually, second starting material of machine material are joined raw material (KM, OM1, OM2, OM3) in and/or by with dilution water and raw material (KM, OM1, OM2, OM3) raw material (KM is diluted in mixing, OM1, OM2, OM3), and in the method

The raw material of adjusting arrival stir spot (KM, OM1, OM2, OM3) the second raw-material concentration of middle machine material, and/or

Adjusting leave stir spot raw material (KM, OM1, OM2, OM3) in the second raw-material concentration of machine material,

It is characterized in that

Determine to arrive stir spot raw material (KM, OM1, OM2, OM3) in the machine material the second raw-material concentration and determine to leave stir spot raw material (KM, OM1, OM2, OM3) in the second raw-material concentration of machine material,

Definite raw material to the arrival stir spot (KM, OM1, OM2, OM3) the second raw-material concentration prediction of middle machine material,

Determine to arrive stir spot raw material (KM, OM1, OM2, OM3) in the machine material the second raw-material aimed concn and/or determine to leave stir spot raw material (KM, OM1, OM2, OM3) in the second raw-material aimed concn of machine material, and

Based on the second raw-material concentration prediction, regulate the raw material (KM, OM1, the OM2 that arrive stir spot to the machine material, OM3) the second raw-material concentration of machine material in so makes raw material (KM, OM1, OM2, OM3) the second raw-material concentration of middle machine material is followed determined aimed concn, and/or

Based on the second raw-material concentration prediction, regulate the raw material (KM, the OM1 that leave stir spot to the machine material, OM2, OM3) in the second raw-material concentration of machine material, so make raw material (KM, OM1, OM2, OM3) the second raw-material concentration of middle machine material is followed determined aimed concn.

44. device that is used to control the operation of getting the raw materials ready of paper machine, described melting process be configured to from a kind of or from multiple constitutive material (OM1, OM2, OM3) in by they being stirred mutually the machine material of producing in the short circulation that will be transported to paper machine (8) (KM), and melting process comprises a plurality of continuous stir spot (DP4, DP6), in stir spot with constitutive material (OM1, OM2, OM3) stir mutually, second starting material of machine material are joined raw material (KM, OM1, OM2, OM3) in and/or by with dilution water and raw material (KM, OM1, OM2, OM3) raw material (KM is diluted in mixing, OM1, OM2, OM3), described device comprises:

Be used to regulate the raw material that arrives stir spot (KM, OM1, OM2, OM3) in the unit of the second raw-material concentration of machine material, and/or

Be used to regulate the raw material that leaves stir spot (KM, OM1, OM2, OM3) in the unit of the second raw-material concentration of machine material,

It is characterized in that described device comprises:

Be used for determine arriving stir spot raw material (KM, OM1, OM2, OM3) in the machine material the second raw-material concentration the unit and be used to determine to leave stir spot raw material (KM, OM1, OM2, OM3) in the unit of the second raw-material concentration of machine material,

Be used for determine arriving stir spot raw material (KM, OM1, OM2, OM3) in the unit of the second raw-material concentration prediction of machine material,

Be used for determine arriving stir spot raw material (KM, OM1, OM2, OM3) in the machine material the second raw-material aimed concn the unit and/or be used to determine to leave stir spot raw material (KM, OM1, OM2, OM3) in the unit of the second raw-material aimed concn of machine material,

Be used for based on the second raw-material concentration prediction the machine material, regulate the raw material (KM that arrives stir spot, OM1, OM2, OM3) in the second raw-material concentration of machine material, make raw material (KM, OM1, OM2, OM3) the second raw-material concentration of middle machine material is followed the unit of determined aimed concn, and/or

Be used for based on the second raw-material concentration prediction, regulate the raw material (KM, the OM1 that leave stir spot the machine material, OM2, OM3) in the second raw-material concentration of machine material, make raw material (KM, OM1, OM2, OM3) the second raw-material concentration of the machine material in is followed the unit of determined aimed concn.

45. method that is used to control the operation of getting the raw materials ready of paper machine, wherein melting process is configured to that (OM1, OM2 will be transported to machine material (KM) in the short circulation of paper machine by they being stirred mutually generation in OM3) from one or more constitutive materials, and in melting process, second starting material of machine material are joined raw material (KM, OM1, OM2, OM3) in and/or by with dilution water and raw material (KM, OM1, OM2, OM3) raw material (KM, OM1 are diluted in mixing, OM2, and in the method, be adjusted in the dosing circuit of getting the raw materials ready raw material (KM, the OM1 that flows forward OM3),, OM2, flow OM3) (FT1, FT3, FT5) and raw material (KM, OM1, OM2, OM3) the second raw-material concentration of middle machine material

It is characterized in that

Determine data on flows (FT1) and the volume forecasting (KMFPr) of machine material (KM),

Determine one or more constitutive materials (OM1, OM2, data on flows OM3) (FT3, FT5) and volume forecasting (FT3Pr, FT5Pr),

Transmit constitutive material (OM1, OM2, data on flows (FT3 OM3) backward along the dosing circuit of getting the raw materials ready, FT5) and volume forecasting (FT3Pr, FT5Pr), so feasible control along the fluctuations in discharge in the future that the adjusting utilization of dosing circuit material flow forward predicts

Determine raw material (OM1, OM2, OM3) in the second raw-material concentration of machine material and raw material thereof (OM1, OM2, the OM3) concentration prediction in, and

Transmit raw material (KM, OM1, OM2 forward along the dosing circuit of getting the raw materials ready, OM3) the second raw-material concentration of machine material reaches at raw material (KM, OM1, OM2 in, OM3) concentration prediction in, so make and control raw material (KM, OM1, OM2, raw material (the KM in the future that the adjusting utilization of the second raw-material concentration of machine material is predicted OM3), OM1, OM2, OM3) the second raw-material concentration change of middle machine material.

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