CN109594109B - Embedded intelligent control system and control method for electrohydrodynamic jet forming - Google Patents

Embedded intelligent control system and control method for electrohydrodynamic jet forming Download PDF

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CN109594109B
CN109594109B CN201811450738.2A CN201811450738A CN109594109B CN 109594109 B CN109594109 B CN 109594109B CN 201811450738 A CN201811450738 A CN 201811450738A CN 109594109 B CN109594109 B CN 109594109B
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width
jet
electrohydrodynamic
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CN109594109A (en
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毛张萍
张礼兵
吴婷
黄风立
左春柽
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Jiaxing University
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02Electroplating of selected surface areas
    • C25D5/026Electroplating of selected surface areas using locally applied jets of electrolyte
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00Automatic controllers
    • G05B11/01Automatic controllers electric
    • G05B11/36Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
    • G05B11/42Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P.I., P.I.D.
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/0265Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
    • G05B13/027Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion using neural networks only
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/0265Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
    • G05B13/0275Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion using fuzzy logic only
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/04Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
    • G05B13/042Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators in which a parameter or coefficient is automatically adjusted to optimise the performance
    • 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
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers

Abstract

The invention discloses an embedded intelligent control system and a control method for electrohydrodynamic jet forming, which comprises the following steps: input equipment, closed-loop monitoring, a control system interface, an expert system, a jet forming controller and jet forming equipment, the optimal optimized process parameters of the expected width of the current spray forming pattern are deduced by using a pattern width reasoning rule constructed in a knowledge base according to the expected width of the deposited pattern formed by the electrohydrodynamic spray forming of the solution to be sprayed and combining historical experimental data of the electrohydrodynamic spray forming, and the width of the deposited pattern is collected in real time in the electrohydrodynamic spray forming process, the method has the advantages that the process parameters are subjected to real-time closed-loop control according to the change of the pattern width, so that the electrohydrodynamics spray forming is realized, and the requirements of data real-time acquisition, visual real-time monitoring and process parameter real-time control are met by adopting an embedded intelligent control system, so that the electrohydrodynamics spray forming efficiency and the forming quality are improved.

Description

Embedded intelligent control system and control method for electrohydrodynamic jet forming
Technical Field
The invention relates to the technical field of electrohydrodynamics jet forming, in particular to an electrohydrodynamics jet forming embedded intelligent control system and a control method.
Background
The microstructure morphology deposited by electrohydrodynamic spray forming has a significant impact on the performance of functional devices. Because the viscosity, surface tension, conductivity and other properties of different spraying solutions are different, the performance parameters of the spraying solutions have a large influence on the morphology of the deposited microstructure, and in addition, the technological parameters of electrohydrodynamic spray forming (such as the movement speed of a workbench, applied voltage, the spraying height of a sprayer and the solution flow rate) have a very large influence on the morphology of the deposited microstructure, such as the width, the thickness, the uniformity and the like. Under the influence of the parameters, different device widths and thicknesses can be obtained in the electrohydrodynamic spray forming process, so that a large number of forming experiments are needed to obtain proper process parameters and control rules for the jet solution of each material to realize high-quality spray forming, but the experiments need to consume a large amount of time and labor and a large number of materials, so that the electrohydrodynamic spray forming has the problems of high cost and low efficiency.
In the process of electrohydrodynamic spray forming, the equipment moving platform does not move at a constant speed, and the moving process needs to go through several stages of acceleration, uniform motion, deceleration and the like, so that the moving speed of the substrate can change in the spray forming process. In addition, the upper surface of the substrate is uneven due to manufacturing reasons, causing variations in the jet height, which factors affect the jet morphology of electrohydrodynamic jet forming. Real-time monitoring of process parameters is therefore required during electrohydrodynamic spray forming. However, the current electrohydrodynamic spray forming control system adopts a non-real-time control system based on a PC mode, and is difficult to meet the requirements of data real-time acquisition, visual real-time monitoring and process parameter real-time control, so that the quality of electrohydrodynamic spray forming is difficult to ensure.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an embedded intelligent control system and method for electrohydrodynamic jet forming, which improve the electrohydrodynamic jet forming quality and forming efficiency and reduce the manufacturing cost of electrohydrodynamic jet forming.
In order to achieve the above object, the present invention provides an embedded intelligent control system for electrohydrodynamic jet forming, which is characterized in that: it includes:
an input device for obtaining a width of a desired pattern of electrohydrodynamic spray-forming deposited patterns;
closed-loop monitoring, namely acquiring change data of the width of a pattern which is deposited in real time in the electrohydrodynamic spray forming process in real time;
the control system interface is used for receiving historical experimental data and monitoring the width, the movement speed, the applied voltage, the spraying height and the solution flow rate of a deposited pattern acquired in real time in the electro-hydrodynamic spraying forming process acquired by closed loop monitoring;
the expert system acquires data output by the control system interface and the input equipment, and infers the optimized process parameters of the current spray forming pattern width according to the width of the expected pattern of the deposited pattern formed by electrohydrodynamic spray forming, the historical experimental data and the pattern width inference rule in the knowledge base;
the jet flow forming controller is respectively connected with the expert system and a real-time acquisition data port connected with the control system interface, and outputs a real-time control signal according to optimized process parameters output by the expert system and data acquired in real time in the electrohydrodynamics jet forming process acquired by real-time acquisition closed-loop monitoring;
and the jet forming equipment is respectively connected with the jet forming controller and closed-loop monitoring, respectively acquires control signals output by the jet forming controller, and acquires width change data of the deposition pattern in real time in the electrohydrodynamic jet forming process by closed-loop monitoring.
The expert system consists of a database formed by the acquired historical experimental data, a knowledge base constructed with a pattern width inference rule and an inference machine for inferring the optimized process parameters of the expected width of the deposited pattern formed by current injection molding.
The jet flow forming controller is connected with the data display equipment.
A control method based on the embedded intelligent control system for electrohydrodynamic jet forming comprises the following steps:
1) acquiring the width of an expected pattern of a deposited pattern formed by the electro-hydrodynamic spraying of the solution to be sprayed, which is input by an input device;
2) acquiring historical experimental data of the electro-hydrodynamic spray forming equipment of the solution to be sprayed, which is input by a control system interface, and taking the historical experimental data as a data source;
3) deducing the optimal process parameters of the expected width of the deposited pattern of the current electrohydrodynamics spray forming according to the width of the expected pattern of the deposited pattern of the electrohydrodynamics spray forming in the step 1), historical experimental data stored in a database and a pattern width inference rule constructed in a knowledge base;
4) the jet flow forming controller obtains the optimized optimal process parameters and controls the action of the jet flow forming equipment;
5) in the process of performing electrohydrodynamic spray forming by using optimized optimal process parameters by using a jet forming device, a control system interface acquires width change data of a deposition pattern which is monitored by a closed loop and acquired in real time from the jet forming device, transmits the width change data to a jet forming controller, performs real-time closed-loop control on the process parameters of the electrohydrodynamic spray forming by using the jet forming controller according to the width change of the deposition pattern acquired in real time, transmits the process parameters processed by the closed-loop control to the jet forming device, performs electrohydrodynamic spray to form the deposition pattern, and simultaneously transmits the width of the deposited pattern acquired in real time, the motion speed of a workbench, applied voltage, spray height and solution flow data to a data display device for real-time display.
The optimum process parameters include stage motion speed, applied voltage, spray height and solution flow rate.
The jet flow forming controller controls the motion of the motion platform of the electrohydrodynamic jet flow forming equipment at the optimized motion speed of the workbench, transmits the optimized applied voltage value to a high-voltage power supply of the electrohydrodynamic jet flow forming equipment through a voltage output interface, controls the jet height of the electrohydrodynamic jet flow forming according to the optimized jet height value, and transmits the optimized solution flow value to an injection pump of the electrohydrodynamic jet flow forming equipment through a solution flow output interface.
Historical experimental data included the width of the pattern deposited by electrohydrodynamic spray formation, stage motion speed, applied voltage, spray height, and solution flow rate.
In the step 3), the inference rule adopted for constructing the expected width inference rule of the deposition pattern is as follows: case-based reasoning rules, rule-based reasoning rules, framework-based reasoning rules, model-based reasoning rules, and Web-based reasoning rules.
The reasoning strategy of the reasoning machine in the step 3) is as follows: and the mixed inference strategy is one or two or more of forward inference, reverse inference and mixed inference.
The control method adopted by the closed-loop control in the step 5) is a mixed control strategy of one or more control methods of PID control, fuzzy control, real-time expert control, optimal control, robust control, neural network control, nonlinear control and sliding mode control.
The invention has the beneficial effects that: an embedded intelligent control system and a method for electrohydrodynamics jet forming are adopted, the optimal optimized process parameters of the expected width of the current jet forming pattern are deduced according to the expected width of the pattern deposited by the electrohydrodynamics jet forming of the solution to be sprayed, by combining the historical experimental data of the electrohydrodynamics jet forming and applying the pattern width inference rule constructed in the knowledge base, and collects the width of the deposition pattern in real time in the electrohydrodynamic spray forming process, the jet forming controller carries out real-time closed-loop control on the technological parameters of the electrohydrodynamic spray forming according to the change of the collected pattern width, therefore, the electrohydrodynamics spray forming is realized, and the embedded intelligent control system is adopted, so that the requirements of real-time data acquisition, real-time visual monitoring and real-time process parameter control are met, and the electrohydrodynamics spray forming efficiency and forming quality are improved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
FIG. 2 is a flow chart of the present invention.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
as shown in the figure, the invention discloses an embedded intelligent control system for electrohydrodynamic jet forming, which is characterized in that: it includes:
an input device for obtaining a width of a desired pattern of electrohydrodynamic spray-forming deposited patterns;
closed-loop monitoring, namely acquiring the width of a deposited pattern, the movement speed of a workbench, an applied voltage, the spraying height and the solution flow rate which are acquired in real time in the electrohydrodynamic spray forming process in real time;
the control system interface comprises a real-time acquisition port for acquiring real-time acquired data in the electrohydrodynamic spray forming process obtained by closed-loop monitoring in real time and acquiring historical experimental data, wherein the historical experimental data comprises the movement speed of a workbench, applied voltage, spray height and solution flow, and the real-time acquired data comprises the pattern width deposited in the electrohydrodynamic spray forming process, the movement speed of the workbench, applied voltage, spray height and solution flow;
the expert system acquires data output by the control system interface and the input equipment, and infers the optimized process parameters of the current spray forming pattern width according to the width of an expected pattern of the deposited pattern of the electrohydrodynamic spray forming, the historical experimental data and the pattern width inference rule;
the jet flow forming controller is respectively connected with the expert system and the real-time acquisition port of the control system interface, and outputs a real-time control signal according to the optimized process parameters output by the expert system and the real-time acquired data in the electrohydrodynamic jet forming process acquired by real-time acquisition closed-loop monitoring;
and the jet forming equipment is respectively connected with the jet forming controller and closed-loop monitoring, respectively acquires control signals output by the jet forming controller, and acquires change data of the pattern width of deposition in real time in the electrohydrodynamic jet forming process by closed-loop monitoring.
On one hand, the jet flow forming controller receives optimized technological parameters from an expert system and transmits the optimized technological parameters to the jet flow forming equipment to realize electrohydrodynamic spray forming, on the other hand, the jet flow forming controller receives real-time collected data transmitted from a control system interface and carries out real-time closed-loop control on the technological parameters of the electrohydrodynamic spray forming according to the change of the pattern width of real-time collected deposition in the electrohydrodynamic spray forming process, and transmits the technological parameters processed by the closed-loop control to the jet flow forming equipment to carry out the electrohydrodynamic spray forming to realize the deposition of the pattern.
The expert system comprises a database formed by the acquired historical experimental data, a knowledge base constructed with a pattern width reasoning rule and a reasoning machine for reasoning the optimized process parameters of the current spray forming pattern width according to the historical experimental data stored in the database and the pattern width reasoning rule constructed in the knowledge base.
The jet flow forming controller is connected with the data display equipment, and meanwhile, data are collected in real time and transmitted to the output interface, and are displayed on the data display equipment in real time.
The invention also discloses a control method of the embedded intelligent control system based on the electrohydrodynamic jet forming, which comprises the following steps:
1) acquiring the width of an expected pattern of a deposited pattern formed by the electro-hydrodynamic spraying of the solution to be sprayed, which is input by an input device;
2) acquiring historical experimental data of the electro-hydrodynamic spray forming equipment of the solution to be sprayed, which is input by a control system interface, and taking the historical experimental data as a data source;
3) constructing a deposition pattern expected width inference rule according to the expected width of the deposition pattern formed by the electrohydrodynamic spray forming in the step 1), and inferring the optimal process parameters of the current electrohydrodynamic spray forming deposition pattern expected width, which comprise the movement speed of the worktable, the applied voltage, the spray height and the solution flow rate, according to the width of the expected pattern of the deposition pattern input by the input equipment and the historical experimental data stored in the database and by using the constructed pattern width inference rule;
4) the jet flow forming controller obtains optimized optimal technological parameters and controls the action of the jet flow forming equipment, the jet flow forming controller controls the motion of a motion platform of the electrohydrodynamic jet flow forming equipment at the optimized motion speed of a workbench, the jet flow forming controller transmits the optimized applied voltage value to a high-voltage power supply of the electrohydrodynamic jet flow forming equipment through a voltage output interface, the jet flow forming controller controls the jet height of the electrohydrodynamic jet flow forming according to the optimized jet height value, the jet flow forming controller transmits the optimized solution flow value to an injection pump of the electrohydrodynamic jet flow forming equipment through a solution flow output interface, and the jet flow forming equipment performs electrohydrodynamic jet forming according to the optimized optimal technological parameters to realize pattern deposition;
5) in the process of performing electrohydrodynamic spray forming by using optimized optimal process parameters by using a jet forming device, a control system interface acquires data acquired in real time from the jet forming device and transmits the data to a jet forming controller, the jet forming controller performs real-time closed-loop control on the process parameters of the electrohydrodynamic spray forming according to the change of the width of the deposition pattern acquired in real time in the process of the electrohydrodynamic spray forming, transmits the process parameters processed by the closed-loop control to the jet forming device to perform electrohydrodynamic spray forming to form the deposition pattern, and simultaneously transmits the data of the width of the deposited pattern acquired in real time, the movement speed of a workbench, the applied voltage, the spray height, the solution flow and the like to a data display device for real-time display.
Data collected in real time from the jet forming apparatus include the width of the pattern deposited by the electrohydrodynamic spray forming process, the stage motion speed, the applied voltage, the spray height and the solution flow rate.
Collecting the width change of a deposition pattern in real time in the electrohydrodynamics spray forming process, carrying out real-time closed-loop control on the technological parameters of the electrohydrodynamics spray forming by a jet forming controller, transmitting the technological parameters processed by the closed-loop control to jet forming equipment, carrying out electrohydrodynamics spray forming, and realizing the deposition of the pattern, and simultaneously transmitting the data of the pattern width, the movement speed of a workbench, the applied voltage, the spray height, the solution flow and the like collected in real time to data display equipment through a pattern width output interface, a speed output interface, a voltage output interface, a spray height output interface and a solution flow output interface respectively, and carrying out real-time display;
the optimum process parameters include stage motion speed, applied voltage, spray height and solution flow rate.
In the step 3), the inference rule adopted for constructing the expected width inference rule of the sedimentary pattern is a mixed inference of one or more inference rules of a case-based inference rule, a rule-based inference rule, a framework-based inference rule, a model-based inference rule and a Web-based inference rule.
The method can construct a case according to historical experimental data stored in a database, construct a case according to the movement speed of a workbench, applied voltage, spraying height and solution flow rate corresponding to the width of a deposited pattern in the historical experimental data, construct a plurality of cases according to all data in the historical experimental data, arrange the cases in sequence from small to large according to the width of the deposited pattern of the cases, and mark index numbers in sequence.
The inference strategy adopted in the step 3) adopts one or a mixed inference strategy of two or more inference strategies of forward inference, reverse inference and mixed inference.
Searching a case closest to the width of the expected pattern in the knowledge base according to the width of the expected pattern of the electrohydrodynamic spray forming deposition pattern of the solution to be sprayed, and if the width of the expected pattern is the same as the width of the deposition pattern of the case in the knowledge base, taking the motion speed of the workbench, the applied voltage, the spray height and the solution flow rate corresponding to the index number corresponding to the case as the optimal process parameters of the expected width of the current electrohydrodynamic spray forming deposition pattern; if the width of the expected pattern is not the same as the width of the deposited pattern of the case in the knowledge base, searching two case index numbers closest to the width of the expected pattern in the knowledge base, and deducing the optimal process parameters of the expected width of the deposited pattern of the current electrohydrodynamic spray forming according to the width of the deposited pattern, the moving speed of the workbench, the applied voltage, the spray height and the solution flow rate corresponding to the two index numbers, wherein the deduction strategy is as follows:
Figure BDA0001886635800000071
wherein u is the applied voltage optimized for the intended pattern of the pattern deposited by electrohydrodynamic spray shaping of the solution to be sprayed, h is the spray height optimized for the intended pattern of the pattern deposited by electrohydrodynamic spray shaping of the solution to be sprayed, v is the stage motion speed optimized for the intended pattern of the pattern deposited by electrohydrodynamic spray shaping of the solution to be sprayed, q is the solution flow optimized for the intended pattern of the pattern deposited by electrohydrodynamic spray shaping of the solution to be sprayed, w is the width of the intended pattern of the pattern deposited by electrohydrodynamic spray shaping of the solution to be sprayed, u is the voltage applied to the substrate to be sprayed, h is the spray height optimized for the intended pattern of the pattern deposited by electrohydrodynamic spray shaping of the solution toiFor the applied voltage, h, of the case corresponding to the ith index number in the knowledge baseiThe spraying height v of the case corresponding to the ith index number in the knowledge baseiThe motion speed q of the workbench corresponding to the case of the ith index number in the knowledge baseiThe solution flow of the case corresponding to the ith index number in the knowledge base, wiThe width u of the deposited pattern of the case corresponding to the ith index number in the knowledge basei-1For the applied voltage of the case corresponding to the i-1 index number in the knowledge base, hi-1The spraying height v of the case corresponding to the i-1 index number in the knowledge basei-1The motion speed q of the workbench corresponding to the case of the i-1 index number in the knowledge basei-1The solution flow of the case corresponding to the i-1 index number in the knowledge base, wi-1The width, Δ u, of the deposited pattern for the case corresponding to the i-1 index number in the knowledge basei=ui-ui-1,Δhi=hi-hi-1,Δvi=vi-vi-1,Δqi=qi-qi-1
The control method adopted by the closed-loop control is a mixed control strategy of one or more control methods of PID control, fuzzy control, real-time expert control, optimal control, robust control, neural network control, nonlinear control and sliding mode control.
The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims (9)

1. An embedded intelligent control system of electrohydrodynamic jet forming is characterized in that: it includes:
an input device for obtaining a width of a desired pattern of electrohydrodynamic spray-forming deposited patterns;
closed-loop monitoring, namely acquiring change data of the width of a pattern which is deposited in real time in the electrohydrodynamic spray forming process in real time;
the control system interface is used for receiving historical experimental data and monitoring the width, the movement speed, the applied voltage, the spraying height and the solution flow rate of a deposited pattern acquired in real time in the electro-hydrodynamic spraying forming process acquired by closed loop monitoring;
the expert system acquires data output by the control system interface and the input equipment, and infers the optimized process parameters of the current spray forming pattern width according to the width of an expected pattern of the deposited pattern of the electrohydrodynamic spray forming, the historical experimental data and the pattern width inference rule;
the jet flow forming controller is respectively connected with the expert system and a real-time acquisition data port connected with the control system interface, and outputs a real-time control signal according to the optimized process parameters output by the expert system and the real-time acquisition data acquired in the electrohydrodynamic jet forming process by real-time acquisition closed-loop monitoring;
and the jet forming equipment is respectively connected with the jet forming controller and closed-loop monitoring, respectively acquires control signals output by the jet forming controller, and acquires change data of the pattern width of deposition in real time in the electrohydrodynamic jet forming process by closed-loop monitoring.
2. The embedded smart electrohydrodynamic jet-forming control system of claim 1, wherein: the expert system consists of a database formed by the acquired historical experimental data, a knowledge base constructed with a pattern width inference rule and an inference machine for inferring the optimized process parameters of the expected width of the deposited pattern formed by current injection molding.
3. The embedded smart electrohydrodynamic jet-forming control system of claim 1, wherein: the jet flow forming controller is connected with the data display equipment.
4. A control method of the embedded intelligent control system for electrohydrodynamic jet formation based on any one of the claims 1, 2 or 3, characterized in that: which comprises the following steps:
1) acquiring the width of an expected pattern of a deposited pattern formed by the electro-hydrodynamic spraying of the solution to be sprayed, which is input by an input device;
2) acquiring historical experimental data of the electro-hydrodynamic spray forming equipment of the solution to be sprayed, which is input by a control system interface, and taking the historical experimental data as a data source;
3) deducing the optimal process parameters of the expected width of the deposited pattern of the current electrohydrodynamics spray forming according to the width of the expected pattern of the deposited pattern of the electrohydrodynamics spray forming in the step 1), historical experimental data stored in a database and a pattern width inference rule constructed in a knowledge base; the reasoning strategy is as follows:
Figure FDA0002229176300000021
wherein u is an applied voltage optimized for a desired pattern of a pattern deposited by electrohydrodynamic spray shaping of the solution to be sprayed and h is an applied voltage deposited by electrohydrodynamic spray shaping of the solution to be sprayedA desired pattern optimized jetting height of the pattern, v a desired pattern optimized stage movement speed for electrohydrodynamic jet forming of the deposited pattern of the solution to be jetted, q a desired pattern optimized solution flow rate for electrohydrodynamic jet forming of the deposited pattern of the solution to be jetted, w a width of the desired pattern for electrohydrodynamic jet forming of the deposited pattern of the solution to be jetted, uiFor the applied voltage, h, of the case corresponding to the ith index number in the knowledge baseiThe spraying height v of the case corresponding to the ith index number in the knowledge baseiThe motion speed q of the workbench corresponding to the case of the ith index number in the knowledge baseiThe solution flow of the case corresponding to the ith index number in the knowledge base, wiThe width u of the deposited pattern of the case corresponding to the ith index number in the knowledge basei-1For the applied voltage of the case corresponding to the i-1 index number in the knowledge base, hi-1The spraying height v of the case corresponding to the i-1 index number in the knowledge basei-1The motion speed q of the workbench corresponding to the case of the i-1 index number in the knowledge basei-1The solution flow of the case corresponding to the i-1 index number in the knowledge base, wi-1The width, Δ u, of the deposited pattern for the case corresponding to the i-1 index number in the knowledge basei=ui-ui-1,Δhi=hi-hi-1,Δvi=vi-vi-1,Δqi=qi-qi-1
4) The jet flow forming controller obtains the optimized optimal process parameters and controls the action of the jet flow forming equipment;
5) in the process of performing electrohydrodynamic spray forming by using optimized optimal process parameters by using a jet forming device, a control system interface acquires width change data of a deposition pattern which is monitored by a closed loop and acquired in real time from the jet forming device, transmits the width change data to a jet forming controller, performs real-time closed-loop control on the process parameters of the electrohydrodynamic spray forming by using the jet forming controller according to the width change of the deposition pattern acquired in real time, transmits the process parameters processed by the closed-loop control to the jet forming device, performs electrohydrodynamic spray to form the deposition pattern, and simultaneously transmits the width of the deposited pattern acquired in real time, the motion speed of a workbench, applied voltage, spray height and solution flow data to a data display device for real-time display.
5. The control method according to claim 4, characterized in that: the optimum process parameters include stage motion speed, applied voltage, spray height and solution flow rate.
6. The control method according to claim 5, characterized in that: the jet flow forming controller controls the motion of the motion platform of the electrohydrodynamic jet flow forming equipment at the optimized motion speed of the workbench, transmits the optimized applied voltage value to a high-voltage power supply of the electrohydrodynamic jet flow forming equipment through a voltage output interface, controls the jet height of the electrohydrodynamic jet flow forming according to the optimized jet height value, and transmits the optimized solution flow value to an injection pump of the electrohydrodynamic jet flow forming equipment through a solution flow output interface.
7. The control method according to claim 4, characterized in that: in the step 3), the inference rule adopted for constructing the expected width inference rule of the deposition pattern is as follows: case-based reasoning rules, rule-based reasoning rules, framework-based reasoning rules, model-based reasoning rules, and Web-based reasoning rules.
8. The control method according to claim 4, characterized in that: in step 3), the inference strategy adopted is as follows: and the mixed inference strategy is one or two or more of forward inference, reverse inference and mixed inference.
9. The control method according to claim 4, characterized in that: the control method adopted by the closed-loop control in the step 5) is a mixed control strategy of one or more control methods of PID control, fuzzy control, real-time expert control, optimal control, robust control, neural network control, nonlinear control and sliding mode control.
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JPH0931696A (en) * 1995-07-20 1997-02-04 Matsushita Electron Corp Jet type plating device
CN101199994A (en) * 2006-12-15 2008-06-18 湖南大学 Intelligent laser cladding forming metal parts
CN107379768A (en) * 2017-07-31 2017-11-24 嘉兴学院 A kind of control method of electrohydrodynamics high-resolution ink-jet printing
CN107718531A (en) * 2016-08-11 2018-02-23 苏州工业园区新国大研究院 Electrofluid injection apparatus and the method for printing three dimensional biological support
CN108466485A (en) * 2018-03-21 2018-08-31 嘉兴学院 Near field electrohydrodynamic spray printing operating voltage has the control method of short delaing time

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0931696A (en) * 1995-07-20 1997-02-04 Matsushita Electron Corp Jet type plating device
CN101199994A (en) * 2006-12-15 2008-06-18 湖南大学 Intelligent laser cladding forming metal parts
CN107718531A (en) * 2016-08-11 2018-02-23 苏州工业园区新国大研究院 Electrofluid injection apparatus and the method for printing three dimensional biological support
CN107379768A (en) * 2017-07-31 2017-11-24 嘉兴学院 A kind of control method of electrohydrodynamics high-resolution ink-jet printing
CN108466485A (en) * 2018-03-21 2018-08-31 嘉兴学院 Near field electrohydrodynamic spray printing operating voltage has the control method of short delaing time

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