CN108469781A - Organosilicon produces fully integrated Optimal Control System - Google Patents
Organosilicon produces fully integrated Optimal Control System Download PDFInfo
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- CN108469781A CN108469781A CN201810216848.6A CN201810216848A CN108469781A CN 108469781 A CN108469781 A CN 108469781A CN 201810216848 A CN201810216848 A CN 201810216848A CN 108469781 A CN108469781 A CN 108469781A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- Automation & Control Theory (AREA)
- Feedback Control In General (AREA)
Abstract
The invention discloses organosilicons to produce fully integrated Optimal Control System, and acquisition solenoid valve, motor-driven valve, frequency converter and alarm signal, collecting temperature transmitter, fluid level transmitter, pressure transmitter data, scene shows and is uploaded to PLC；Collected data through gigabit Ethernet line, High performance industrial interchanger, office's industrial personal computer, monitoring room industrial personal computer are uploaded to by ICP/IP protocol by PLC, are realized Real time displaying by host computer procedure, are generated alarm signal or feedback control signal；PLC generates each Absent measures signal by program of lower computer, controls corresponding motor-driven valve and frequency converter action, and realization automatically controls；It can carry out freely operating manually on industrial personal computer simultaneously, issue control signal to PLC, to manually control the progress of corresponding link production.The beneficial effects of the invention are as follows organosilicon product quality and production efficiency is improved, ensure the security reliability of production.
Description
Technical field
The invention belongs to chemical technology fields, are related to organosilicon and produce fully integrated Optimal Control System.
Background technology
Organosilicon is extensive since early 1940s industrialized production as a kind of novel hitech materials
Applied to fields such as electronics, electric appliance, Aeronautics and Astronautics, building, weaving, medicine, daily use chemicals, become the national economic development and people's life
Running water is flat to improve indispensable new material.At the same time, the needs of the organosilicon product of high-purity are got in high technology industry
Come stronger.But most of organosilicon products are difficult to reach very high purity, no how much space is changed production technology
Into this just needs to consider to optimize organosilicon production control system, and Optimal Control Strategy eliminates error and environment to reach
The purpose of interference obtains high purity product.Raw material, byproduct, the intermediate product of organosilicon production technology are found through on-the-spot investigation
And final products, it is related to a variety of inflammable, explosive, aggressive chemicals, to temperature, pressure, very high without environmental requirements such as electrostatic,
And it needs to be precisely controlled and eliminate error in reaction unit and could obtain best product quality.This requires in production process
To important parameter real time monitoring, display exception and alarm, corresponding optimisation strategy is made to each elementary reaction device and is controlled
Decision.The organosilicon that this project proposes produces control platform, is measured in real time to controlled parameter using sensor, utilizes control
Theoretical algorithm, programmable logic controller (PLC) and computer technology build organosilicon production control system, for improving process units
With the precision of executing agency, productivity is improved, labor intensity is reduced, improves enterprise management and be of great significance.
The development of China's organosilicon product starts from the Shenyang chemical institute of the mid-50, starts to industrialize to the sixties
Production.In recent years, the rapid development of China's economy has pushed the development speed of domestic chemical industry.The existing organosilicon production in China
Up to more than 200 families of factory, wherein small scale, product are single, township enterprise and self-employed worker factory without technology development capability account for
Most of, as a whole, China's organosilicon product less varieties, horizontal low, of poor quality and quantity are difficult to meet domestic demand, this
All it is the undisputed fact.Must first it set about from the breakthrough of silicone industry in China production technology, absorb as early as possible has on this basis
The advanced technology of machine silicon production, increases the production of organic silicon monomer, to meet the ever-increasing need in China organosilicon product market
It asks.Through investigating, there are larger problems to include for China's silicone industry at this stage：First, manufacturer is numerous, product category is not complete.
Second is that scope of the enterprise is small, controlled level is low, and control accuracy is poor.The manufacturing parameter control of many medium-sized and small enterprises mostly uses at home
Instrument and relay logic control system are simulated, this control system the degree of automation is low, difficulty of parameter tuning, complex circuit dimension
Repair inconvenience.Data management level is low, and on-site parameters not can display real-time and record, and operating personnel is needed to monitor at the scene, labor
Fatigue resistance is big, and operating cost is high.On the whole, the still inexpensive work walked in China, medium-sized and small enterprises and quasi- large enterprise
Therefore the road of industry auto-control improves the degree of automation of production process and the quality of product, become current very urgent
The problem of.
Invention content
The purpose of the present invention is to provide organosilicons to produce fully integrated Optimal Control System, the beneficial effects of the invention are as follows with
The production process of organosilicon be research object, to organosilicon produce carry out integrated optimization control, improve organosilicon product quality and
Production efficiency ensures the security reliability of production.In the synthetic reaction of chloropropyl trichloro-silane and silester, design is a kind of
When automatically adjusting reaction temperature based on Widrow-Hoff LMS algorithms and using fuzzy, accurately controlling the dropwise addition of catalyst
Between, keep building-up process accurate, stable, efficient；In rectification process, controller model is established with fuzzy control theory to solve
The large time delay problem of temperature of reaction kettle control, substantially increases the reaction yield of product；In tail gas treatment process, in conjunction with fuzzy
Neural control design goes out a kind of Composite PID parameter adaptive control device, by controlling frequency converter come the constant pressure of realization device
Control improves tail gas degree of purity, greatly reduces the discharge of enterprise's environmental pollution.
The technical solution adopted in the present invention is industry spot according to requiring installation temperature transmitter, fluid level transmitter, pressure
Power transmitter, acquisition solenoid valve, motor-driven valve, frequency converter and alarm signal, collecting temperature transmitter, fluid level transmitter, pressure
Transmitter data, scene show and are uploaded to PLC；PLC exchanges collected data through gigabit Ethernet line, High performance industrial
Machine is uploaded to office's industrial personal computer, monitoring room industrial personal computer by ICP/IP protocol, by host computer procedure realize Real time displaying,
Generate alarm signal or feedback control signal；PLC generates each Absent measures signal by program of lower computer, controls corresponding motor-driven valve
It is acted with frequency converter, realization automatically controls；It can carry out freely operating manually on industrial personal computer simultaneously, issue control signal extremely
PLC, to manually control the progress of corresponding link production.
Further, PLC uses Siemens's programmable logic controller (PLC).
Further, slave computer include on-site data gathering program, data and logical operation program, each Absent measures program,
Frequency convertor PID adjusts program；
1) data acquisition program：The data that the programmed acquisition in-situ transducer is sent, by data conversion algorithm by electric current
Signal is converted to actual numerical value and is stored in specified register；
2) data and logical operation program：The program complete to PLC institutes gathered data count and logical operation, establish mould
Knowledge base is pasted, program provides criterion in order to control；
3) program is controlled：The program automatically controls on-site electrical equipment by switching value and analog output completion,
According to the requirement of each process procedure, algorithm is carried out on the control theories Research foundation such as fuzzy control, PID, ANN Control
Programming；Control program controls the size of charging flow or steam by electrically operated valve aperture；It is opened by controlling motor-driven valve
Degree comes adjusting apparatus pressure, mass flow；The start and stop of live audible-visual annunciator are controlled by output switch parameter；By controlling frequency conversion
Device realizes Isobarically Control；It according to the difference of each process procedure, is handled using different control strategies, finally realizes entire work
The automatic production of skill flow.
Further, host computer includes chain program, foreground presentation program, in real time/history alert program, the inquiry of historical data
Program；
1) chain program：The program completes the setting to host computer port, baud rate, data type and communication protocol,
Ensure that it can normally link with slave computer and smoothly communicate, can accurately acquire slave computer register internal data in real time and returns
It returns something for repairs and orders signal, realize that host computer operates the control measure action to slave computer；
2) foreground presentation program：The program completes incubation medium operation, and equipment and technological parameter are shown, the reality of parameter
When/history curve shows, the work such as multi-screen fusion display, the operating condition of real time inspection equipment, ensure to each equipment in workshop,
The real-time online of technological parameter is shown；The numerical value and variation tendency that each parameter is intuitively shown by curve carry out data system with this
Meter analysis ensures the good of equipment, analyzes the reaction condition of best product quality and feeds back to controller；
3) in real time/history alert program：The program finishing department equipment, technological parameter, high lower bound in real time/history alarm,
Exist by eye-catching flash for prompting and alarm, develops detailed warning window prompt and the equipment and type of alarm alarmed occur；
4) the inquiry of historical data program：The preservation and inquiry of the program finishing department equipment, technological parameter pass through control point
Equipment, by date enquiry of historical data, and be arranged and carry out report output printing.
Specific implementation mode
The present invention is described in detail With reference to embodiment.
The present invention is used as using Distributed Control System (DCS) and is designed a model, to realize the centralized management of organosilicon production
And decentralised control, danger coefficient is reduced, ensures that production safety carries out.Ensureing production automatic control system and the technological process of production
Under the premise of compatibility, with safe and stable, reliable, innovation for design principle, design.
Industry spot of the present invention acquires corresponding data according to requiring to install corresponding transmitter (temperature, liquid level, pressure), existing
Field shows and is uploaded to Siemens's programmable logic controller (PLC) (PLC).PLC is by collected data through gigabit Ethernet line, height
Property industrial interchanger is uploaded to office's industrial personal computer, monitoring room industrial personal computer by ICP/IP protocol, passes through host computer procedure reality
Existing Real time displaying generates alarm signal or feedback control signal.PLC generates each Absent measures signal by program of lower computer, control
Corresponding motor-driven valve and frequency converter action are made, realization automatically controls.And can carry out freely operating manually on industrial personal computer, issue control
Signal is to PLC, to manually control the progress of corresponding link production.
Slave computer is developed：
Slave computer software is developed using international advanced Step7V5.5.Slave computer software exploitation is mainly comprising scene
Program design of data acquisition, data and logical operation programming, each Absent measures programming, frequency convertor PID adjust program
Design.
1) Program design of data acquisition：The data that the main collection site transmitter of the program is sent, are calculated by data conversion
Current signal is converted to actual numerical value and is stored in specified register by method.
2) data and logical operation programming：The program is mainly completed to transport counting for PLC institutes gathered data with logic
It calculates, establishes fuzzy knowledge base, program provides criterion in order to control.
3) program master-plan is controlled：The program is mainly completed by switching value and analog output to on-site electrical equipment
Automatically control.According to the requirement of each process procedure, in the control theories Research foundation such as fuzzy control, PID, ANN Control
Upper progress algorithm routine is write.Control program controls the size of charging flow or steam by electrically operated valve aperture；Pass through control
It makes electronic valve opening and comes adjusting apparatus pressure, mass flow；The start and stop of live audible-visual annunciator are controlled by output switch parameter；It is logical
It crosses control frequency converter and realizes Isobarically Control.According to the difference of each process procedure, handled using different control strategies, finally
Realize the automatic production of entire technological process.
Host computer is developed：
Upper computer software is developed using domestic state-of-the-art kingview 6.55 at present, includes mainly chain program
Design, the design of foreground presentation program, in real time/history alert program design, the inquiry of historical data programming.
1) chain program designs：The program is mainly completed to host computer port, baud rate, data type and communication protocol
Setting, ensure that it can normally link with slave computer and smoothly communicate, can accurately acquire inside slave computer register in real time
Data simultaneously return to revision signal, realize that host computer operates the control measure action to slave computer.
2) foreground presentation program designs：The program mainly completes incubation medium operation, and equipment and technological parameter are shown,
Real-time/history curve of parameter shows that multi-screen merges the work such as display.The operating condition of real time inspection equipment ensures to vehicle
Between each equipment, technological parameter real-time online show.The numerical value and variation tendency that each parameter is intuitively shown by curve, with this into
Row data statistic analysis ensures the good of equipment, analyzes the reaction condition of best product quality and feeds back to controller.
3) in real time/history alert program design：The main finishing department equipment of the program, technological parameter are (predominantly：Temperature,
Pressure, liquid level) high lower bound in real time/history alarm.Exist by eye-catching flash for prompting and alarm, develops detailed warning window and prompt
The equipment and type of alarm now alarmed.
4) the inquiry of historical data programming：The preservation and inquiry of the program main finishing department equipment, technological parameter.It can
With by control subset, by date enquiry of historical data, and it can be arranged and carry out report output printing.
It is researched and developed by this item purpose, product quality can be improved, ensure the security reliability of production, reduce goods and materials
Consumption, reduce the occupation of capital, improve working efficiency, realize production process auto-control, improve enterprise production and management, management and
The efficiency of decision and level, realize the benefit of enterprise, and can further promote the construction of organosilicon workshop.
Two kinds of raw materials of chloropropene and trichlorosilane are uniformly mixed and are transported to raw material head tank, are controlled by valve and chlorine third is added
Base silane synthesis reactor, while cyclic steam heats synthesis reactor, organosilicon synthesis starts anti-under 85 DEG C of catalyst actions
It answers.When temperature is gently stabilized to 110 degree in kettle, illustrate that the reaction process in synthesis reactor terminates, into next production process.
It should ensure that temperature slowly rises synthetic reaction and fully carries out as possible during this.Head tank mixed liquor is adjusted according to temperature in the kettle
Conveying speed, also influence of the cyclic steam amount size to temperature.Using PID control strategy, in conjunction with fuzzy controller to raw material
Weights judge, using neural network identification and corrective control, Optimized BP Neural Network, to meet wanting for temperature control system
It asks.A kind of self-adaptive controlled device of the fuzzy based on Widrow-Hoff LMS algorithms is designed, makes control system with self-adjusting, certainly
Learning ability, while there are the performances such as quick, stability is good.Pan feeding valve and cyclic steam valve are controlled by the above control strategy
Aperture obtain better product quality to obtain stable temperature and reaction time.It is also an advantage of the present invention that：
1 can realize the control of optimal reaction temperature, obtain quality product.
2 solve the problems, such as that temperature large time delay, design sequence controller realize the rectifying of different product with fuzzy control scheme
Separation improves product reaction yield.
3 combine fuzzy control Composite PID parameter self-tuning control method to realize frequency control Isobarically Control, improve production
Safety guarantee.
The above is only the better embodiment to the present invention, not makees limit in any form to the present invention
System, every any simple modification that embodiment of above is made according to the technical essence of the invention, equivalent variations and modification,
Belong in the range of technical solution of the present invention.
Claims (4)
1. organosilicon produces fully integrated Optimal Control System, it is characterised in that：Industry spot according to require installation temperature transmitter,
Fluid level transmitter, pressure transmitter, acquisition solenoid valve, motor-driven valve, frequency converter and alarm signal, collecting temperature transmitter, liquid
Position transmitter, pressure transmitter data, scene show and are uploaded to PLC；PLC by collected data through gigabit Ethernet line,
High performance industrial interchanger is uploaded to office's industrial personal computer, monitoring room industrial personal computer by ICP/IP protocol, passes through host computer procedure
It realizes Real time displaying, generate alarm signal or feedback control signal；PLC generates each Absent measures signal by program of lower computer,
Corresponding motor-driven valve and frequency converter action are controlled, realization automatically controls；It can carry out freely operating manually on industrial personal computer simultaneously, under
Hair control signal is to PLC, to manually control the progress of corresponding link production.
2. producing fully integrated Optimal Control System according to organosilicon described in claim 1, it is characterised in that：The PLC is using west
The sub- programmable logic controller (PLC) of door.
3. producing fully integrated Optimal Control System according to organosilicon described in claim 1, it is characterised in that：The slave computer includes
On-site data gathering program, data and logical operation program, each Absent measures program, frequency convertor PID adjust program；
1) data acquisition program：The data that the programmed acquisition in-situ transducer is sent, by data conversion algorithm by current signal
It is converted to actual numerical value and is stored in specified register；
2) data and logical operation program：The program complete to PLC institutes gathered data count and logical operation, establish and fuzzy know
Know library, program provides criterion in order to control；
3) program is controlled：The program automatically controls on-site electrical equipment by switching value and analog output completion, according to
The requirement of each process procedure carries out algorithm routine on the control theories Research foundation such as fuzzy control, PID, ANN Control
It writes；Control program controls the size of charging flow or steam by electrically operated valve aperture；By control electronic valve opening come
Adjusting apparatus pressure, mass flow；The start and stop of live audible-visual annunciator are controlled by output switch parameter；It is real by controlling frequency converter
Existing Isobarically Control；It according to the difference of each process procedure, is handled using different control strategies, finally realizes entire technique stream
The automatic production of journey.
4. producing fully integrated Optimal Control System according to organosilicon described in claim 1, it is characterised in that：The host computer includes
Chain program, foreground presentation program, in real time/history alert program, the inquiry of historical data program；
1) chain program：The program completes the setting to host computer port, baud rate, data type and communication protocol, ensures
It can normally link with slave computer and smoothly communicate, and can accurately acquire slave computer register internal data in real time and return and repair
Signal is ordered, realizes that host computer operates the control measure action to slave computer；
2) foreground presentation program：The program completes incubation medium operation, and equipment and technological parameter show, parameter it is real-time/
History curve shows that work, the operating condition of real time inspection equipment such as multi-screen fusion display ensure to each equipment in workshop, work
The real-time online of skill parameter is shown；The numerical value and variation tendency that each parameter is intuitively shown by curve carry out data statistics with this
Analysis ensures the good of equipment, analyzes the reaction condition of best product quality and feeds back to controller；
3) in real time/history alert program：The program finishing department equipment, technological parameter, high lower bound in real time/history alarm, pass through
There is alarm in eye-catching flash for prompting, develop detailed warning window prompt and the equipment and type of alarm alarmed occur；
4) the inquiry of historical data program：The preservation and inquiry of the program finishing department equipment, technological parameter, are set up separately by control
Standby, enquiry of historical data by date, and be arranged and carry out report output printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216848.6A CN108469781A (en) | 2018-03-16 | 2018-03-16 | Organosilicon produces fully integrated Optimal Control System |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810216848.6A CN108469781A (en) | 2018-03-16 | 2018-03-16 | Organosilicon produces fully integrated Optimal Control System |
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| CN201810216848.6A Pending CN108469781A (en) | 2018-03-16 | 2018-03-16 | Organosilicon produces fully integrated Optimal Control System |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112130453A (en) * | 2020-07-30 | 2020-12-25 | 浙江中控技术股份有限公司 | Control method and system for improving MCS production stability based on machine learning |
| CN113112101A (en) * | 2020-01-10 | 2021-07-13 | 北京百度网讯科技有限公司 | Method and device for monitoring production process, electronic equipment and storage medium |
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| CN113112101A (en) * | 2020-01-10 | 2021-07-13 | 北京百度网讯科技有限公司 | Method and device for monitoring production process, electronic equipment and storage medium |
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Application publication date: 20180831 |