CN104122878A - Industrial energy conservation and emission reduction control device and method - Google Patents
Industrial energy conservation and emission reduction control device and method Download PDFInfo
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- CN104122878A CN104122878A CN201410394925.9A CN201410394925A CN104122878A CN 104122878 A CN104122878 A CN 104122878A CN 201410394925 A CN201410394925 A CN 201410394925A CN 104122878 A CN104122878 A CN 104122878A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention relates to an industrial energy conservation and emission reduction control device and method. At present, the problem that energy pinch and environmental deterioration become global issues and the problem that the food industry always faces various constraint conditions, multiple variables, strong coupling, nonlinearity, great time lag, uncertainties, multiple control targets and the like bring great difficulty to realize the advanced control technology. The industrial energy conservation and emission reduction control device comprises a frame (1), a sensor (2) is mounted in the frame and connected with a logic control device (3), a controller (4) and a logic-arithmetic unit (5) are arranged in the logic control device, the controller is connected with the logic-arithmetic unit, the logic control device is respectively connected with an Ethernet control circuit (6), a man-machine interface (8) and an actuator (9), and the Ethernet control circuit is connected with an industrial computer (7). The industrial energy conservation and emission reduction control device is used for control of industrial energy conservation and emission reduction.
Description
technical field:
the present invention relates to a kind of industrial energy saving and reduce discharging control device and control method.
background technology:
energy scarcity and ecological deterioration have become the greatest problem that the whole world faces, and food industry process has the problems such as multiple constraint condition, multivariate, strong coupling, non-linear, large dead time, uncertainty, multi-control target conventionally, bring very large difficulty to the realization of Advanced Control Techniques.China's commercial production is the problem of ubiquity high energy consumption, high flow rate, high pollution still, and the highly energy-consuming industry energy consumption of unit product such as iron and steel, coloured, electric power, chemical industry is higher more than 40% than advanced international standard.When commercial production enterprise must apply quality that automatic technology science ensures product, cost and predominance, actively develop energy conservation application.And the less concern of traditional robotization is energy-conservation and environmental issue, along with society and expanding economy, green power plant, green building and green chemical industry etc. are suggested with energy-conserving and environment-protective related notion, save the new constraints such as the energy, minimizing raw materials consumption and environmental protection automatic technology is had higher requirement.And current be not energy-conservationly the saving of simple meaning and use less the energy, but to lean on use advanced science and technology, advanced management theory etc. improves the utilization ratio of the energy.Particularly aspect rebuilding traditional industry by new and high technology, robotization science plays very important effect in the operation of industrial enterprise and development.In modern production enterprise, advanced control for the energy-saving and emission-reduction of enterprise, efficient operation plays a very important role, and has many significant advantages.
industrial energy saving reduces discharging under the overall background that advanced control device innovation and creation are energy-saving and emission-reduction Green Sustainables and produces.Along with commercial production is day by day towards integrated, maximization future development, the complicacy of modern industry procedures system constantly increases, energy-conservation, consumption reduction, safety, environmental protection become the primary goal of robotization, and food industry process has the problems such as multiple constraint condition, multivariate, strong coupling, non-linear, large dead time, uncertainty, multi-control target conventionally, bring very large difficulty to the realization of Advanced Control Techniques, main because control target with multiple constraint condition, the factor such as object research not in addition, control program is reasonable not causes.And these loops affect production efficiency exactly, reduce the key point of energy consumption.
utilize this industrial energy saving to reduce discharging advanced control device and can realize reduction unit added value energy consumption, improve energy use efficiency, especially industrial process has the features such as strong coupling, uncertainty, non-linear, INFORMATION OF INCOMPLETE and pure hysteresis quality, and there is harsh constraint condition, control target diversification, in the large-scale control system that variables number increases and correlativity strengthens.Traditional control device and strategy can not meet the demands completely, necessary application of advanced control device, and industrial energy saving reduces discharging advanced control device and will have boundless application prospect.Bring considerable economic benefit, social benefit and ecological benefits for the Green Sustainable of modern industry, there is important and far-reaching realistic meaning.
advanced control is taking process control computer system (DCS, PLC, FCS) and host computer thereof as implementing platform, taking routine control as basis, taking whole process units or essential elements as control object, realize a class Optimal Control Strategy of the high performance control of large-scale, complicated, multivariate and constraint process, as Model Predictive Control, Based Intelligent Control, fuzzy control etc.Object is to solve the process control difficult problem that conventional control cannot be tackled, Integral lifting control quality; Improve the stationarity of main technologic parameters, improve product quality, reduce manipulation strength; Binding operation is optimized, the safety of implement device, high-quality, high yield, low consumption, energy-conservation and reduction of discharging.Advanced control system can adapt to that the general treatment capacity of modern industry process units is large, equipment enlarging, heating cooling procedure are many, with energy greatly, account for the high feature of ratio of processing cost; Modern process industry produce be continuously, multiple operation, multi-level process, there is tight, the hot integrated level high of upstream and downstream contact; From the angle of process control, the multivariate of process industry, strong coupling, non-linear, large dead time, multiple constraint, multiobject feature are strengthened increasingly, and process uncertain factor and to disturb source to wait also increasing has become modern flow industry enterprise and has realized the main bugbear of high-quality control and process optimization.
summary of the invention:
the object of this invention is to provide a kind of industrial energy saving and reduce discharging control device and control method.
above-mentioned object realizes by following technical scheme:
a kind of industrial energy saving reduces discharging control device, its composition comprises: framework, described framework inside is provided with sensor, described sensor andlogic control device connects, described logic control device inside comprises controller, logical-arithmetic unit, described controller is connected with logical-arithmetic unit, and described logic control device is connected with topworks, Ethernet control circuit, man-machine interface respectively, and described Ethernet control circuit is connected with industrial computer.
described industrial energy saving reduces discharging control device, and described logical-arithmetic unit is connected with soft metering circuit, neural control circuit, fuzzy control circuit, matrix control circuit, PID control circuit, PREDICTIVE CONTROL circuit respectively.
one utilizes above-mentioned industrial energy saving to reduce discharging control device and control method,
the first step: model standardized advanced control system engineering construction scheme and step, set up advanced control system platform, advanced design control device.
second step: find restriction product lifting and the energy from complicated practical engineering application, material consumption is high, the root that pollutant emission is high, improves existing Advanced Control Techniques and propose solution, and in control device integrated advanced control algorithm.
the 3rd step: to the integrated application of data analysis, process mechanism, progressively strengthen real-time data analysis and combine with the model based on strict mechanism,
form complete advanced control device.
beneficial effect:
1. the present invention be directed to the features such as modern industry production run complexity is high, variable is many, control algolithm is complicated, large time delay, Multivariable Coupling and cause energy resource consumption is large, utilization factor is not high and pollutant discharge amount is a large difficult problem to propose, be mainly suitable for the energy-saving and emission-reduction production control in the highly energy-consumings such as metallurgy, food, chemical industry, high pollution field.
the technical solution adopted for the present invention to solve the technical problems is: device is taking Advanced Control Techniques as support, taking programmable logic controller (PLC) as control core, be equipped with advanced controls such as all kinds of fuzzy control circuits, neural control circuit, PID control circuit, matrix control circuit, expert's control, optimal control motor, electric furnace etc. are the production technology of topworks; Device, taking Industrial Ethernet as communication network, is connected with upper industrial computer and transmits industrial process data and control information; Show the state of the art of industrial processes and the time of day of energy resource consumption.
the present invention can not change under the condition of the equipment of original technological process, control system hardware, software, by the optimal control such as optimization, the self-regulation production run of advanced control algorithm, thereby reach the object that improves energy use efficiency reduction pollutant emission raising productivity effect.
the present invention is directed to the feature of process industry technological process, using food industry process as example is as goal in research, by process mechanism, its operator scheme of analyzing in detail of further investigation food industry, and in conjunction with data of literatures, based on Advanced Control Techniques such as multivariable prediction control, expert's control and soft measurements, whole process simulation and optimisation technique, the food industry advanced control system of exploitation highly versatile, perfect in shape and function, good stability, by the multinomial difficult problem solving in the application of food processing advanced control system.
. the present invention proposes accumulation prediction error method, expert and controls and multivariable prediction control combination algorithm, and by these two kinds of algorithm application in food processing and production;
6. the present invention proposes special area multivariable prediction control circuit and realizes the steady control of food processing technology process.
. the present invention proposes the correcting algorithm in soft measurement update technology, and is applied in continuous food processing online soft sensor.
brief description of the drawings:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is operating system circuit diagrams of the present invention.
accompanying drawing 3 is fuzzy control circuit figure of the present invention.
accompanying drawing 4 is matrix control circuit figure of the present invention.
accompanying drawing 5 is the neural control circuit figure of the present invention.
accompanying drawing 6 is PREDICTIVE CONTROL circuit diagrams of the present invention.
accompanying drawing 7 is PID control circuit figure of the present invention.
accompanying drawing 8 is the soft circuit of measurement and control figure of the present invention.
accompanying drawing 9 is Part I circuit diagrams of controller of the present invention.
accompanying drawing 10 is Part II circuit diagrams of controller of the present invention.
accompanying drawing 11 is pid algorithm process flow diagrams of the present invention.
accompanying drawing 12 is FUZZY ALGORITHMS FOR CONTROL process flow diagrams of the present invention.
accompanying drawing 13 is neural algorithm process flow diagrams of the present invention.
accompanying drawing 14 is predictive control algorithm process flow diagrams of the present invention.
in figure: same-sign circuit guides has annexation.
embodiment:
embodiment 1:
a kind of industrial energy saving reduces discharging control device, its composition comprises: framework 1, described framework inside is provided with sensor 2, described sensor is responsible for Information Monitoring, and pass to logic controller device 3, described logic control device inside comprises that controller 3, logical-arithmetic unit 4, described logic control device internal logic arithmetical unit 5 carry out computing and algorithm calculates, described controller passes to configuration software by information and processes, accept the steering order that described configuration software is assigned simultaneously, and control topworks's 9 production control processes.Described logic controller device is taking Industrial Ethernet system 6 as communication network, with upper industrial computer, 7 connect transmission industrial process data and control information, host computer is installed man-machine interface 8 and is shown the state of the art of industrial processes and the time of day of energy resource consumption, meanwhile, described man-machine interface is born the functions such as the foundation, electronic filing of algorithm management, model, historical and real-time data base.As shown in accompanying drawing 1,2,9,10.
embodiment 2:
reduce discharging control device according to the industrial energy saving described in embodiment 1, described logical-arithmetic unit is connected with soft metering circuit, neural control circuit, fuzzy control circuit, matrix control circuit, PID control circuit, PREDICTIVE CONTROL circuit respectively.As shown in accompanying drawing 3,4,5,6,7,8.
embodiment 3:
reduce discharging control device according to the industrial energy saving described in embodiment 1 or 2, soft metering circuit utilizes easy survey process variable (often to claim auxiliary variable or secondary variable SecondaryVariable exactly, the pressure of for example easily measuring in industrial process, flow, the procedure parameters such as temperature), (be often called leading variable PrimaryVriable according to these variablees and the process variable to be measured that is difficult to directly measure, for example reaction rate, production concentration and product quality etc.) between mathematical relation (soft-sensing model), by various mathematical computations and method of estimation, finally realize " the soft measurement " to variable to be measured.Along with the development of soft-measuring technique, propose much to construct the method for soft measurement, and analysis extensively and profoundly affect the problem such as the factor of soft measurement performance and the on-line correction technology of soft measurement, soft-measuring technique is successfully applied on many actual industrial production devices, and its range of application is also in continuous expansion.Early stage soft-measuring technique is mainly used in controlled variable or the immesurable occasion of disturbance, its objective is that the advanced person who realizes industrial process controls, need to realize the difficult every field of surveying Parameter Measuring and this technology is own now through being penetrated into, such as decision-making, planning, scheduling etc.Up-to-date progress shows, soft-measuring technique has become large study hotspot and a main developing direction of process control and process detection field.
make Advanced Control Techniques reach the object of energy efficiency, need to study the various control theories such as complex system modeling and control, nonlinear control system theory, discrete event dynamic system, Hybrid System Theory, large scale system theory, stochastic system filtering and control, distributed parameter system control, adaptive control, robust control, Based Intelligent Control, optimum control, System Discrimination and modeling and control technology.The multivariate that device has for industrial Complicated Flow type technological process, strong coupling, strong nonlinearity, uncertain, produce the comprehensive complicacy such as boundary condition changes greatly, by control theory and method and intelligent method (fuzzy reasoning, neural network, knowledge excavation, expert system etc.) combine, adopt the conventional control of tradition and the advanced research method of controlling comparative analysis, make model prediction technology, Expert Control Technology, fuzzy control technology, soft-measuring technique and the Optimized-control Technique based on comprehensive production index obtain Demonstration Application in Continuous Industry, and reach energy-conservation, consumption reduction, reduce discharging, the effect of synergy.
embodiment 4:
reduce discharging control device according to the industrial energy saving described in embodiment 1 or 2 or 3, fuzzy control circuit is a kind of digital control form of applying microcomputer simulation human brain fuzzy logic inference, and it belongs to nonlinear Control, Based Intelligent Control category.The complex nonlinear object that it has become to lacking mathematical models at present carries out most important, the most widely used Based Intelligent Control form of accurately effectively controlling.Fuzzy control is to utilize the basic thought of fuzzy mathematics and theoretical control method, in traditional control field, the whether accurate of control system dynamic mode is that good and bad main key is controlled in impact, and the dynamic information of system is more detailed, more can reach the object of accurate control.But, for complicated system, because variable is too many, be often difficult to the dynamic of correct descriptive system, so slip-stick artist's facility ins all sorts of ways, simplification system is dynamic, to reach the object of control, but desirable not to the utmost.That is to say, traditional control theory has powerful control ability for clear and definite system, but for system too complicated or that be difficult to accurate description, seems helpless, therefore just attempting processing these control problem with fuzzy mathematics, as shown in Figure 12.
embodiment 5:
according to the feedback compensation function of model error described in embodiment 1 or 2 or 3 or 4.It is effective that Model Predictive Control has control, the advantages such as strong robustness, can effectively overcome the uncertainty of process, non-linear and relevance, and can easily reduce discharging control device by the controlled industrial energy saving of processing procedure, PREDICTIVE CONTROL circuit is a kind of closed optimized control strategy based on model, its algorithm core is: have the dynamic model of predictive processes future behaviour, the online various constraints that optimization is calculated and rolled in control action and variable and the performance variable of implementing repeatedly.At present, PREDICTIVE CONTROL has become the most widely used a kind of Advanced Control Strategies of industrial control field.Generally speaking, linear Model Predictive Control can be divided into three major types: the first kind, based on the predictive control algorithm of nonparametric model.Representational algorithm has model algorithm control (MAC) and dynamic matrix control (DMC).This class algorithm adopts respectively finite impulse response model and limited step response model as course prediction model, without considering model structure and order, process time lag can be included in model naturally, especially be applicable to representing the irregular characteristics of objects of dynamic response, be applicable to processing the control of open loop stabilization multivariable process restricted problem.Equations of The Second Kind, based on the predictive control algorithm of the input/output argument such as ARMA or CARIMA model.This class algorithm is developed by classical adaptive control, merge the advantage of self-correcting control and PREDICTIVE CONTROL, its feedback compensation is realized in self-tuning mode by the on-line identification of model and the online correction of control law, wherein the most representative is generalized predictive control (GPC) algorithm, it can be used for open-loop unstable, non-minimum phase and time become the objects more rambunctious such as time lag, and time lag to system and order is uncertain has good robustness " but for multi-variable system, algorithm is implemented more difficult.The 3rd class, is called " control of rolling time domain " (RHC), and in theoretical circles, by famous LQ or LQG algorithm development, it has been expanded to following the tracks of and has controlled and output FEEDBACK CONTROL.As shown in Figure 14.
embodiment 6:
reduce discharging control device according to the industrial energy saving described in embodiment 1 or 2 or 3 or 4 or 5, along with the development of the expert system technology in artificial intelligence, scholar, the slip-stick artist of automation field introduce the thought and method of expert system in the research and engineering application of control system, attempt to solve all working control problems that only rely on traditional autocontrol method to be difficult to prove effective, complete some by the inefficient complex control task of existing control technology, advance the development of Theory of Automatic Control and technology simultaneously, thereby produced expert and control the control method of this novelty.The essence that expert controls is structure and all various expertises based on controlled device and control law of operation that make control system, and will utilize knowledge in intelligent mode, and controlled system is optimized as much as possible with practical.Therefore, expert controls the control or the expert Intelligence Control that are called again based on knowledge.The thought source that expert controls is in expert system, but incomplete same again with expert system, expert can be controlled and be divided into two kinds of forms, i.e. expert control system and Expert Controller according to the complicacy of system architecture.The former system architecture more complicated, development tolls is higher, has good technical feature, and for need to be compared with the device of hi-tech or process.Expert Controller is called again and gives knowledge controller, and relatively simple for structure, development tolls is low, and technical feature can meet again the General Requirements of industrial process control, thereby obtains application more widely.To act as basis based on knowledge controller in whole system, expert control system can be divided into direct expert control system and two kinds of expert control systems indirectly.In directly expert controls, controller provides control signal to system, and directly to controlled process generation effect.In indirect expert control system, controller, indirectly to controlled process generation effect, therefore can be described as again monitor-type expert control system or parameter adaptive control system.As shown in accompanying drawing 11,13.
embodiment 7:
reduce discharging advanced control system engineering construction scheme and the step of control device at Criterion according to the industrial energy saving described in embodiment 1 or 2 or 3 or 4 or 5 or 6, set up advanced control system platform, advanced design control device; From complicated practical engineering application, find restriction product lifting and the energy, material consumption is high, the root that pollutant emission is high, improves existing Advanced Control Techniques and proposes solution, and in control device integrated advanced control algorithm; To the integrated application of data analysis, process mechanism, progressively strengthen real-time data analysis and combine with the model based on strict mechanism, form complete advanced control device.
Claims (3)
1. an industrial energy saving reduces discharging control device, its composition comprises: framework, it is characterized in that: described framework inside is provided with sensor, described sensor andlogic control device connects, described logic control device inside comprises controller, logical-arithmetic unit, described controller is connected with logical-arithmetic unit, and described logic control device is connected with topworks, Ethernet control circuit, man-machine interface respectively, and described Ethernet control circuit is connected with industrial computer.
2. industrial energy saving according to claim 1 reduces discharging control device, it is characterized in that: described logical-arithmetic unit is connected with soft metering circuit, neural control circuit, fuzzy control circuit, matrix control circuit, PID control circuit, PREDICTIVE CONTROL circuit respectively.
3. utilize industrial energy saving described in claim 1-2 to reduce discharging a control method for control device, it is characterized in that: the method comprises the steps:
The first step: model standardized advanced control system engineering construction scheme and step, set up advanced control system platform, advanced design control device;
Second step: find restriction product lifting and the energy from complicated practical engineering application, material consumption is high, the root that pollutant emission is high, improves existing Advanced Control Techniques and propose solution, and in control device integrated advanced control algorithm;
The 3rd step: to the integrated application of data analysis, process mechanism, progressively strengthen real-time data analysis and combine with the model based on strict mechanism, form complete advanced control device.
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| CN112631215A (en) * | 2020-12-10 | 2021-04-09 | 东北大学 | Intelligent forecasting method, device, equipment and storage medium for industrial process operation index |
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