CN105045249A - Automatic control method and device for realizing safe production load adjustment in chemical industry production - Google Patents

Automatic control method and device for realizing safe production load adjustment in chemical industry production Download PDF

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Publication number
CN105045249A
CN105045249A CN201510572160.8A CN201510572160A CN105045249A CN 105045249 A CN105045249 A CN 105045249A CN 201510572160 A CN201510572160 A CN 201510572160A CN 105045249 A CN105045249 A CN 105045249A
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raw material
inventory
setting value
control raw
master control
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CN105045249B (en
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苏岳龙
谭好富
刘根兰
郭辉
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Lan-Star (beijing) Technology Center Co Ltd
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Lan-Star (beijing) Technology Center Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/418Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
    • G05B19/41865Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/32Operator till task planning
    • G05B2219/32406Distributed scada
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/40Minimising material used in manufacturing processes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention relates to an automatic control method for realizing safe production load adjustment in chemical industry production. The method includes the following steps that: 1) the set value of the feeding capacity of a main control raw material is inputted according to production requirements, wherein the main control raw material is a raw material for deciding production load; 2) the set value of the feeding capacity of an auxiliary control raw material is obtained according to the set value of the feeding capacity of the main control raw material and a raw material proportioning coefficient K; 3) the change direction of the set value of the feeding capacity of the main control raw material relative to current feeding capacity is judged automatically, namely, whether the set value of the feeding capacity of the main control raw material relative to the current feeding capacity is increased or decreased is judged automatically; 4) the sequence of the feeding capacities of the main control raw material and the auxiliary control raw material is determined and adjusted according to the change direction of the set value of the feeding capacity of the main control raw material, and the sequence of the feeding capacities is transmitted to an executing mechanism; and 5) the actual feeding capacities of the main control raw material and the auxiliary control raw material can be made to achieve respective set values through a feedback control algorithm, and dynamic equilibrium can be maintained. With the automatic control method adopted, onekey operation when the production load is required to be adjusted in the chemical industry production can be realized, and potential safety hazards can be eliminated, and labor intensity can be greatly reduced. The invention also relates to an automatic control device for realizing safe production load adjustment in chemical industry production.

Description

Realize safety adjustment in Chemical Manufacture and produce autocontrol method and the device of load
Technical field
The present invention relates to the fields such as chemical industry, metallurgy, manufacture, particularly relate to and be a kind ofly applicable to safety interaction control method in Production in Chemical Plant load automatic lifting process and device.
Background technology
All the time, " operating in a key " of the lifting of Production in Chemical Plant load is all very trouble, a difficult job, especially safety in production regulation is related to, when the material producing two kinds of participation reactions in load lifting process needs to determine addition sequence according to the change direction of load, above-mentioned need of work operating personnel manual operation can complete.Owing to relating to Safe production of chemical industry problem, under current traditional mode, operating personnel must cautious manual operation when lifting load for chemical enterprise.After receiving the dispatch command increasing or reduce and produce load, first first operating personnel need the inventory of the first material increasing or reduce according to technological procedure manual shift, inventory must drop into full energies after changing and give more sustained attention the actual inventory of this material and reach the consistent moment with new setting value, change the inventory setting value of another kind of material under new production load immediately in this moment, the full energies of continuation input is simultaneously paid close attention to the actual inventory of the second material and is reached consistent with new setting value.After said process completes, under chemical plant installations can operate in new production loading condiction safely and steadly, pilot process is mistake slightly, and especially sequence error during change material amount, brings huge potential safety hazard by whole Chemical Manufacture.
For the production of epoxypropane, the material participating in reaction is great harmful influence chlorine and propylene.According to technological requirement, the inventory of propylene first must be increased when increasing and producing load, the inventory of chlorine first must be reduced when reducing and producing load, as strictly operated not in accordance with above-mentioned technological procedure, process units may be caused to explode and cause the leakage of chlorine, the leakage of chlorine will cause catastrophic effect to site operation personnel and surrounding enviroment.Load is produced to increase, first operating personnel are needed manually to increase the setting value of propylene inventory under manual operation pattern, setting value must drop into full energies after changing and give more sustained attention the actual inventory of propylene and reach the consistent moment with new setting value, reach immediately according to the setting value of pulp furnish requirement manual adjustments chlorine inventory after this moment, full energies must be dropped into after the setting value of chlorine inventory changes and give more sustained attention its actual inventory and reach consistent with new setting value.After chlorine and propylene two kinds of raw materials all reach new mobile equilibrium, this produces load adjustment end-of-job.Above-mentioned traditional operation mode greatly expends the energy of operating personnel, especially for night shift operating personnel, slightly slackly brings huge potential safety hazard by for enterprise's production.
In like manner, in the lifting process of boiler load, relate to the sequencing problem of coal dust and the adjustment of air inventory equally, sequence error can cause the bursting of boilers, and this type of industrial accident is of common occurrence.
Fig. 1 shows chemical enterprise in prior art and changes the operating process of producing load, the manual operation of overall process makes labor intensity of operating staff large, production efficiency is low, each change is produced load and all be there is security risk, and the coordinated signals therefore realizing chemical enterprise safety automation lifting production load is extremely urgent.
Summary of the invention
Based on the defect that above-mentioned prior art exists, the present invention proposes a kind of autocontrol method and the device of producing load for realizing safety adjustment in Chemical Manufacture, to reduce enterprise safety operation risk to greatest extent, reduces operator's labour intensity.
Autocontrol method for realizing safety adjustment production load in Chemical Manufacture of the present invention, it is characterized in that, comprise the steps: 1) according to the setting value of Production requirement input master control raw material inventory, described master control raw material is the raw material determining to produce load; 2) setting value of auxiliary control raw material inventory is obtained according to master control raw material inventory setting value and pulp furnish COEFFICIENT K; 3) change direction of the more current inventory of setting value of master control raw material inventory described in automatic decision increases or reduces; 4) according to the change direction of the setting value of master control raw material inventory, determine the sequencing adjusting described master control raw material and auxiliary control raw material inventory, and send topworks's execution; 5) make the actual inventory of described master control raw material and auxiliary control raw material successively reach respective setting value by feedback control algorithm, maintain mobile equilibrium.
In the preferred embodiment of the present invention, method of the present invention also comprises the step of the actual inventory of Real-Time Monitoring raw materials for production, also can comprise a step display further, in real time the display setting value of each raw materials for production, the variation tendency of actual inventory.
As preferably, step 4) in, for the situation increasing and reduce to produce load, preset the sequencing of the described master control raw material of adjustment and auxiliary control raw material inventory respectively.
As preferably, step 5) in, guarantee that the actual inventory of raw materials for production reaches the setting value after change within the shortest time by close-loop feedback control algolithm.
In a kind of embodiment, step 4) operation be: when produce load increase time, device is selected first to change the inventory of described master control raw material by height, it is made to change to master control raw material inventory setting value direction, after reaching setting value, adjust the inventory of auxiliary control raw material again, make it reach corresponding setting value gradually; When producing load and reducing, by the low inventory selecting device first to change described auxiliary control raw material, make it to the change of auxiliary control raw material inventory setting value direction, after reaching this setting value, adjust the inventory of described master control raw material again, make it reach described master control raw material inventory setting value gradually.
The invention still further relates to a kind of automaton for realizing safety adjustment production load in Chemical Manufacture, this device comprises:
Produce load load module, for the setting value according to Production requirement input master control raw material inventory, described master control raw material is the raw material determining to produce load;
Ratio algoritic module, for obtaining the setting value of auxiliary control raw material inventory according to master control raw material inventory setting value and pulp furnish COEFFICIENT K;
Production load variations judge module, for the change direction of the more current inventory of setting value of master control raw material inventory described in automatic decision, is increase or reduce;
Raw material inventory setting module, for the change direction of the setting value according to master control raw material inventory, determines the sequencing adjusting described master control raw material and auxiliary control raw material inventory, and sends topworks's execution;
Automatic control algorithm module, makes the actual inventory of described master control raw material and auxiliary control raw material successively reach respective setting value by feedback control algorithm, maintains mobile equilibrium.
Device of the present invention can also comprise raw material inventory measurement module, for measuring the actual inventory of raw materials for production; Can further include operation result display module, in real time the display setting value of each raw materials for production, the variation tendency of actual inventory.
As preferably, described raw material inventory setting module be by height select device automatic decision increase load time described master control raw material and auxiliary control raw material inventory change sequencing, by low select device automatic decision reduce load time described master control raw material and auxiliary control raw material inventory change sequencing.
As preferably, described automatic control algorithm module, by regulating ratio, the integration and differentiation correlation parameter in feedback control algorithm, makes the actual inventory of raw material reach new setting value and set up mobile equilibrium.
Instant invention overcomes prior art and regulate the inventory first needing to increase or reduce material by artificial means, and inventory still needs input full energies to give more sustained attention the technological deficiency changing another kind of material amount when the actual inventory of this material reaches the consistent moment with new setting value immediately after changing, by coordinated signals, the possibility that material amount change during change production load occurs in sequence mistake is reduced to zero, reduces the huge potential safety hazard because production changing load brings Chemical Manufacture to greatest extent.
Accompanying drawing explanation
Fig. 1 gives in prior art and adopts manual operation to change the enforcement schematic diagram producing load;
Fig. 2 gives and of the present inventionly realizes safety automation lifting for chemical enterprise and produce the inter-linked controlling method of load and the general illustration of device;
Fig. 3 gives chemical enterprise of the present invention produces the inter-linked controlling method of load preferred enforcement schematic diagram for realizing safety automation lifting; And
Fig. 4 gives chemical enterprise of the present invention produces the linkage control device of load preferred enforcement schematic diagram for realizing safety automation lifting.
Embodiment
In the present invention, reaction raw materials is divided into " master control raw material " and " auxiliary control raw material ".For a chemical reaction for the purpose of synthesis of chemicals, when determining to produce load, a kind of input amount in usual selection two kinds of raw materials (normally two kinds of raw materials) is as parameter of measurement, after this parameter is determined, according to concrete technology situation in the input amount determining another kind of raw material.The former be called " master control raw material " in the present invention, namely determine the raw material producing load, the latter is called as " auxiliary control raw material ".In some cases, master control raw material refers to that price is more expensive and is not suitable for excessive raw material, and auxiliary control raw material is then that price is lower can the raw material of excessive input.In other cases, master control raw material is can not be excessive otherwise can cause the raw material of subsidiary reaction, and auxiliary control raw material is then must be excessive otherwise can cause reacting insufficient expectation.The present invention is not limited thereto, when the ratio of master control raw material and auxiliary control raw material is 1, then can use instead mutually.Even also can use instead mutually when not being 1, because in some reactions, any one raw material in two kinds of raw materials can be selected to determine reaction load.Easy understand, can also state above-mentioned implication by other title, such as " the first raw material | " and " the second raw material ".For example, propylene and chlorine reaction prepare propylene chlorohydrin (propylene chlorohydrin obtains epoxypropane further through alkali treatment), generally as master control raw material using chlorine when setting reaction load, because chlorine is not suitable for excessive, otherwise be not only and cause danger, and a large amount of accessory substances can be produced.Determine the input amount of propylene after chlorine is quantitative again according to ratio, propylene is namely as auxiliary control raw material here.
The inter-linked controlling method realizing safety automation lifting production load for chemical enterprise provided by the invention, shown in Fig. 2 and Fig. 3, comprises the following steps:
Produce load input step, according to the setting value of chemical enterprise actual production demand input master control raw material inventory;
Pulp furnish step, calculates the setting value of auxiliary control raw material inventory according to inputted master control raw material inventory setting value and pulp furnish COEFFICIENT K;
Production load variations determining step, it is increase or reduce that automatic decision inputs the more current inventory of master control raw material inventory;
The automatic conversion step of raw material inventory setting value, according to the change direction of the setting value of master control raw material inventory, determines the sequencing adjusting described master control raw material and auxiliary control raw material inventory, and sends topworks's execution;
The automatic rate-determining steps of the actual inventory of raw material, makes the actual inventory of described master control raw material and auxiliary control raw material successively reach respective setting value by feedback control algorithm, maintains mobile equilibrium;
Raw material inventory measuring process, detects the actual inventory of each raw materials for production in real time;
Operation result step display, shows the variation tendency of raw materials for production setting value and actual inventory under current production load.
Under normal circumstances, when implementing of the present invention, above-mentioned production load input step, pulp furnish step, production load variations determining step, the automatic conversion step of raw materials for production inventory setting value, the automatic rate-determining steps of the actual inventory of raw materials for production, raw materials for production inventory measuring process and operation result step display all automatically complete in dcs.After setting value according to chemical enterprise actual production demand input master control raw material inventory, the setting value of auxiliary control raw material inventory is calculated further according to pulp furnish COEFFICIENT K, after automatic decision inputs master control raw material and the more current inventory of auxiliary control raw material inventory increases or reduces, a crucial step is the sequencing changed according to the change direction automatic decision master control raw material and auxiliary control raw material inventory setting value of producing load, finally 2 kinds of actual inventorys of raw materials for production are made successively to reach respective setting value based on raw materials for production inventory measurement result by feedback control algorithm, complete the foundation of mobile equilibrium after changing load.Said method can help chemical enterprise to produce in the process of load in lifting; the coordinated signals of required raw material when different ratio requirement, lifting load under different addition sequence requirement is dynamically completed according to technological requirement; mainly solve harmful influence raw material current many huge potential safety hazards brought by manual control order of addition when load variations in chemical process; significantly reduce the labour intensity of operating personnel, while guaranteeing chemical enterprise safety in production to greatest extent, improve production efficiency and control accuracy.
As one of preferred version of the present invention, described production load input step, need the actual process requirement according to chemical enterprise, determine to adjust the raw material type needing when producing load to change, and using the setting value of this raw material inventory as increasing or reducing the unique channel of producing load.
As preferred version two of the present invention, described pulp furnish step, needs the actual process requirement according to chemical enterprise, after determining master control raw material, by set pulp furnish COEFFICIENT K, calculates the setting value of auxiliary control raw material inventory.
As preferred version three of the present invention, described production load variations determining step, master control raw material is after accepting new setting value, and it is increase or reduce that automatic decision inputs the more current inventory of master control raw material inventory, namely automatically judges it is will increase to produce load or reduce to produce load.
As preferred version four of the present invention, the described automatic conversion step of raw material inventory setting value, need the actual process requirement according to chemical enterprise, based on the change direction of producing load, under ensureing to keep the safety in production in lifting load process and raw material being added to precondition that sequencing specify, automatic decision adjusts the sequencing of master control raw material and auxiliary control raw material inventory.
In the above-mentioned methods, if technological requirement master control raw material and auxiliary control raw material equal proportion add, then pulp furnish COEFFICIENT K is 1.
Further, the automatic conversion step of above-mentioned raw materials inventory setting value, under ensureing to keep the safety in production in lifting load process and raw material being added to precondition that sequencing specifies, the sequencing that automatic decision master control raw material and auxiliary control raw material inventory setting value change, shown in Fig. 2 and Fig. 3: chemical production device is in steady operational status under current loads, when producing load and increasing, device is selected first to change the inventory setting value first adding raw material of technological requirement by height, first feedback control algorithm makes the actual inventory of this raw material reach setting value and after setting up new mobile equilibrium, after add the setting value of raw material again according to pulp furnish coefficient generation respective change, thus for the requirement of two kinds of raw material inventorys after the increase of final satisfied production load, chemical production device is in steady operational status under current loads, when producing load and reducing, by low select device first to change technological requirement first reduce the inventory setting value adding raw material afterwards, first feedback control algorithm makes the actual inventory of this raw material reach setting value and after setting up new mobile equilibrium, first add the setting value of raw material again according to pulp furnish coefficient generation respective change, thus for the requirement of two kinds of raw material inventorys after the reduction of final satisfied production load.Herein, term " first adds raw material " and refers to the raw material first dropped in reactor when startup one is reacted." add raw material afterwards " and refer to after input " first adding raw material ", the raw material slowly adding in reactor or add in batches.
As another aspect of the present invention, present invention also offers a kind of linkage control device realizing safety automation lifting production load for chemical enterprise, shown in Fig. 2 and Fig. 4, this device comprises:
Produce load load module, for the setting value according to Production requirement input master control raw material inventory, described master control raw material is the raw material determining to produce load;
Ratio algoritic module, for obtaining the setting value of auxiliary control raw material inventory according to master control raw material inventory setting value and pulp furnish COEFFICIENT K;
Production load variations judge module, for judging that the variation tendency of the more current production load of load is produced in new input, increasing or reducing;
Raw material inventory setting module, for the change direction of the setting value according to master control raw material inventory, determines the sequencing adjusting described master control raw material and auxiliary control raw material inventory, and sends topworks's execution;
Automatic control algorithm module, makes the actual inventory of raw material reach setting value and set up new mobile equilibrium by feedback control algorithm;
The actual inventory measurement module of raw material, for measuring the actual inventory of raw materials for production;
Operation result display module, for realizing the real-time display of the lower 2 kinds of raw materials for production setting values of current production load and actual inventory variation tendency.
Further, above-mentioned raw materials for production inventory setting module, for by high select device automatic decision to increase load time master control raw material and the sequencing that changes of auxiliary control raw material inventory setting value; For selecting by low the sequencing adjusting master control raw material and auxiliary control raw material inventory during device automatic decision reduction load.
Further, above-mentioned automatic control algorithm module, for after reception raw materials for production inventory setting value and actual inventory measured value, by regulating ratio, the integration and differentiation correlation parameter in feedback control algorithm, the actual inventory of raw material is made to reach new setting value and set up mobile equilibrium.
Above-mentioned, produce load load module, ratio algoritic module, production load variations judge module, raw materials for production inventory setting module, automatic control algorithm module, the actual inventory measurement module of raw materials for production, operation result display module, all automatically complete based on dcs.
Instant invention overcomes prior art and regulate the inventory first needing to increase or reduce material by artificial means, and inventory still needs input full energies to give more sustained attention the technological deficiency changing another kind of material amount when the actual inventory of this material reaches the consistent moment with new setting value immediately after changing, by coordinated signals, the possibility that material amount change during change production load occurs in sequence mistake is reduced to zero, reduces the huge potential safety hazard because production changing load brings Chemical Manufacture to greatest extent.
The present invention can realize Real-time Obtaining production load variations and the actual inventory measured value of raw materials for production in DCS system, thus the production load automatic lifting coordinated signals realized in DCS system based on ratio, selection and feedback control algorithm, the present embodiment can reach the inventory first automatically increasing propylene when increasing and producing load, the safety in production working specification first automatically reducing the inventory of chlorine when reducing and producing load, and its process no longer needs any manual intervention.Further, the real-time follow-up display of 2 kinds of raw materials for production setting values and actual inventory variation tendency under current production load also can be realized in DCS system.
Those skilled in the art will also understand is that, may be implemented as electronic hardware, computer software or both combinations in conjunction with various illustrative logical blocks, unit, circuit and the algorithm steps described by disclosure herein.In order to this interchangeability of hardware and software is clearly described, the function with regard to various exemplary components, square, unit, circuit and step has carried out general description to it.This function is implemented as software or is implemented as hardware and depends on embody rule and be applied to the design constraint of whole system.Those skilled in the art can realize described function in every way for often kind of embody rule, but this realization determines should not be interpreted as causing departing from the scope of the present invention.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. producing an autocontrol method for load for realizing safety adjustment in Chemical Manufacture, it is characterized in that, comprise the steps:
1) according to the setting value of Production requirement input master control raw material inventory, described master control raw material is the raw material determining to produce load;
2) setting value of auxiliary control raw material inventory is obtained according to master control raw material inventory setting value and pulp furnish COEFFICIENT K;
3) change direction of the more current inventory of setting value of master control raw material inventory described in automatic decision increases or reduces;
4) according to the change direction of the setting value of master control raw material inventory, determine the sequencing adjusting described master control raw material and auxiliary control raw material inventory, and send topworks's execution;
5) make the actual inventory of described master control raw material and auxiliary control raw material successively reach respective setting value by feedback control algorithm, maintain mobile equilibrium.
2. in accordance with the method for claim 1, it is characterized in that, also comprise:
6) the actual inventory of Real-Time Monitoring raw materials for production.
3. in accordance with the method for claim 1, it is characterized in that, also comprise:
7) setting value of each raw materials for production, the variation tendency of actual inventory is shown in real time.
4. in accordance with the method for claim 4, it is characterized in that: step 4) in, for the situation increasing and reduce to produce load, preset the sequencing of the described master control raw material of adjustment and auxiliary control raw material inventory respectively.
5. in accordance with the method for claim 4, it is characterized in that: step 5) in, guarantee that the actual inventory of raw materials for production reaches the setting value after change within the shortest time by close-loop feedback control algolithm.
6. in accordance with the method for claim 1, it is characterized in that:
When producing load and increasing, by the inventory that height selects device first to change technological requirement first to add raw material, make it to the change of master control raw material inventory setting value direction, after reaching setting value, add the inventory of raw material again after adjustment, make it reach corresponding setting value gradually;
When producing load and reducing, by low select device first to change technological requirement after add the inventory of raw material, make it to the change of auxiliary control raw material inventory setting value direction, after reaching this setting value, adjust the inventory first adding raw material again, make it reach this raw material inventory setting value gradually.
7. produce an automaton for load for realizing safety adjustment in Chemical Manufacture, it is characterized in that, this device comprises:
Produce load load module, for the setting value according to Production requirement input master control raw material inventory, described master control raw material is the raw material determining to produce load;
Ratio algoritic module, for obtaining the setting value of auxiliary control raw material inventory according to master control raw material inventory setting value and pulp furnish COEFFICIENT K;
Production load variations judge module, for the change direction of the more current inventory of setting value of master control raw material inventory described in automatic decision, is increase or reduce;
Raw material inventory setting module, for the change direction of the setting value according to master control raw material inventory, determines the sequencing adjusting described master control raw material and auxiliary control raw material inventory, and sends topworks's execution;
Automatic control algorithm module, makes the actual inventory of described master control raw material and auxiliary control raw material successively reach respective setting value by feedback control algorithm, maintains mobile equilibrium.
8., according to device according to claim 7, it is characterized in that comprising further,
Raw material inventory measurement module, for measuring the actual inventory of raw materials for production.
9., according to device according to claim 7, it is characterized in that comprising further,
Operation result display module, in real time the display setting value of each raw materials for production, the variation tendency of actual inventory.
10., according to device according to claim 7, it is characterized in that,
Described raw material inventory setting module, be by height select device automatic decision increase load time described master control raw material and auxiliary control raw material inventory change sequencing, by low select device automatic decision reduce load time described master control raw material and auxiliary control raw material inventory change sequencing.
11., according to device according to claim 7, is characterized in that, described automatic control algorithm module, by regulating ratio, the integration and differentiation correlation parameter in feedback control algorithm, make the actual inventory of raw material reach new setting value and set up mobile equilibrium.
12., according to device according to claim 8, is characterized in that, described raw material inventory measurement module, and its measurement result is used for setting up new mobile equilibrium by feeding back to automatic control algorithm module.
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