CN109471377B - Control method of two-axis X-Y leather product cutting machine based on digital twinning - Google Patents
Control method of two-axis X-Y leather product cutting machine based on digital twinning Download PDFInfo
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Abstract
A control method of a two-axis X-Y leather product cutting machine based on digital twinning comprises the following steps: 1) establishing a five-dimensional structure model of a digital twin system of the two-axis X-Y leather product cutting machine, wherein the five-dimensional structure model comprises a physical entity, virtual software, a management system, twin data and connection; 2) establishing a physical entity, and establishing a motion control platform of the two-axis X-Y leather product cutting machine, wherein the physical entity is divided into an embedded local controller and a control object, and the control object is a two-phase hybrid stepping motor; 3) establishing virtual software, and carrying out one-to-one virtual-real correspondence with physical entities; 4) a management system is established, and a remote Web user can log in at any time, check a production scheme and optimize system configuration; 5) and (4) analyzing and processing twin data. The invention can carry out design, manufacture and service of the whole life cycle of the product, improve the operation efficiency of the system and maximize the production benefit and the asset availability.
Description
Technical Field
The invention belongs to the technical field of industrial equipment automation, and relates to a control method of a digital twin-based two-axis X-Y leather product cutting machine.
Background
The two-way fusion specifically refers to the deep fusion of industrialization and informatization. Currently, the industrial production task in China is very heavy, the economic loss caused by pollution reaches 6% of GDP every year, the unit GDP energy consumption reaches 2.5 times of the world mean value, and the labor productivity is only 1/8 in developed countries such as America, Japan, Germany and the like. In 2013, Germany proposed "Industrial 4.0", the core technology of which is CPS, translated into an information physical fusion system. In 2017, 3.8, the Ministry of industry and correspondence publishes 'information physical system white paper', and indicates that CPS is a comprehensive technical system supporting the two-way deep fusion and is an important hand grip for promoting the fusion development of the manufacturing industry and the Internet. CPS interconnects human, machine and object, connects entity and virtual object in two-way, and integrates virtual control and real control to improve energy efficiency of manufacturing industry.
The virtual-real bidirectional dynamic connection in the CPS connotation has two steps: 1. virtual materialization, for example, when a product is designed, simulation and emulation are firstly carried out, and then the product is manufactured; 2. the virtualization of the entity, namely the entity reflects the state to the virtual end in the processes of manufacturing, using and running, and the management of the whole life cycle of the product is realized by monitoring, judging, analyzing, predicting and optimizing in a virtual mode. The Digital Twin (Digital Twin) is a technical means which integrates multiple physical, multi-scale and multi-disciplinary attributes, has the characteristics of real-time synchronization, faithful mapping, high fidelity and the like, and can realize interactive fusion and mutual promotion of a physical world and an information world. Therefore, to achieve the real two-way integration in the industrial automation field, a specific implementation of the digital twinning technology on the industrial equipment needs to be flexibly applied.
Disclosure of Invention
Aiming at the problems, the invention provides a control method of a two-axis X-Y leather product cutting machine based on digital twinning, which comprises a five-dimensional structure model of a digital twinning system: the physical entity, the virtual software, the management system, the twin data and the connection, and the specific form of the five-dimensional structure model can carry out design, manufacture and service of the whole life cycle of the product, improve the operation efficiency of the system, and maximally improve the production benefit and the asset availability.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a control method of a two-axis X-Y leather product cutting machine based on digital twinning comprises the following steps:
1) establishing a five-dimensional structure model of a digital twin system of a two-axis X-Y leather product cutting machine, wherein the five-dimensional structure model comprises a physical entity, virtual software, a management system, twin data and connection, the physical entity is an objectively existing cutting machine motion platform, and a photoelectric encoder is arranged on a platform coaxial with a motor and is used for monitoring the physical state of each axis in real time; the virtual software is a faithful mirror image of a physical entity, is realized by server-side digitization according to the composition content, the operation mode and the data rule of the cutting machine platform, and has the functions of simulation, prediction, execution and control; the management system opens a remote Web user login function, can check a production scheme in real time and optimizes system configuration; twin data comprises related data in a physical entity, virtual software and a management system, and a large amount of data is continuously recorded, updated and optimized along with the processing of the leather product; the connection connects the above sub-modules pairwise to realize effective data communication;
2) establishing a physical entity, and establishing a motion control platform of the two-axis X-Y leather product cutting machine, wherein the physical entity is divided into an embedded local controller and a control object, and the control object is a two-phase hybrid stepping motor;
3) establishing virtual software, performing one-to-one virtual-real correspondence with physical entities, wherein the virtual software is developed on Windows 10 through a Qt Creator lightweight Integrated Development Environment (IDE) by using a C + + programming language and adopting an MFC framework and a Tee Chart technology, and a software interface is designed according to module classification and comprises five functional areas of network communication, simulation operation, process configuration, data monitoring and equipment control; the functions of the virtual software are as follows: before the moving platform of the two-axis X-Y leather product cutting machine starts to process, simulating the production process of the product; selecting an optimal production scheme according to analog simulation, and selecting a module and a process; monitoring, judging and analyzing the state of a physical entity in the production process; carrying out optimization control on the production process according to the data;
4) a management system is established, and a remote Web user can log in at any time, check a production scheme and optimize system configuration; the management system adopts a Browser/Server mode, and the back end uses PHP and Mysql to develop according to MVC specification, so as to realize the functions of user login, permission judgment, information management, historical information base and view control module; a user can log in the system at a PC (personal computer) end or a mobile phone end through an account and a password of the system to perform information filling, checking, data downloading and production configuration operations, and an administrator publishes content, customizes user groups and authorities thereof, sets a module and performs importing and exporting operations of data backup;
5) analyzing and processing twin data, wherein the twin data comprises process planning data and actual production big data, the process planning faces physical entities of the two-axis X-Y cutting machine, virtual-real mapping and interactive fusion of full elements and full flows are carried out through server-side virtual software with high simulation degree, and process design and continuous optimization facing a production field are realized; and actual production data is recorded in real time in the running process of the digital twin system, and is matched with the expected process in process achievement degree, and the data is stored in a server side.
The technical conception of the invention is as follows: in the system operation process, a server client firstly analyzes the cutter operation track, simulates the leather product processing process and determines the optimal motion parameters; then sending the data packet to the embedded local controller; the local controller acquires X, Y current speed, moment, position and other state information of the shaft stepping motor in real time and returns the information to the server client for monitoring, storing and analyzing. The system records the processing process of the leather product, and once errors occur in the processing data, the operation of the cutter is further controlled through an industrial control algorithm. A remote Web user can log in a server client through an Internet network, inquire all data and physical states of the cutting machine platform in the running process, and configure and select an optimal production scheme.
The invention has the following beneficial effects: firstly, in the early stage of product processing, process planning and process simulation can be carried out at a server virtual software end in a digital thinking and form, whether a product design has defects or not is identified, and the finished product quality of the product is predicted. Secondly, in the actual production process, the physical entity state can be recorded in real time, the design, manufacture and service of the whole life cycle of the product are optimized, the system operation efficiency is improved, the risk caused by downtime is reduced, and the production benefit and the asset availability are improved to the maximum extent.
Drawings
FIG. 1 is a five-dimensional structure model of a digital twinning system of a two-axis X-Y leather product cutting machine.
FIG. 2 is a flowchart of the procedure of the two-axis X-Y leather cutting machine management system.
FIG. 3 is a graph of twin data and connectivity.
Detailed description of the preferred embodiments
The invention is further described with reference to the accompanying drawings and the specific examples.
Referring to fig. 1 to 3, a digital twin-based two-axis X-Y leather product cutting machine control method includes the following steps:
1) establishing a five-dimensional structure model of a digital twin system of a two-axis X-Y leather product cutting machine, wherein the five-dimensional structure model comprises a physical entity, virtual software, a management system, twin data and connection, the physical entity is an objectively existing cutting machine motion platform, and a photoelectric encoder is arranged on a platform coaxial with a motor and is used for monitoring the physical state of each axis in real time; the virtual software is a faithful mirror image of a physical entity, is realized by server-side digitization according to the composition content, the operation mode and the data rule of the cutting machine platform, and has the functions of simulation, prediction, execution and control; the management system opens a remote Web user login function, can check a production scheme in real time and optimizes system configuration; twin data comprises related data in a physical entity, virtual software and a management system, and a large amount of data is continuously recorded, updated and optimized along with the processing of the leather product; the connection connects the above sub-modules pairwise to realize effective data communication;
2) establishing a physical entity, and establishing a motion control platform of the two-axis X-Y leather product cutting machine, wherein the physical entity is divided into an embedded local controller and a control object, and the control object is a two-phase hybrid stepping motor;
3) establishing virtual software, performing one-to-one virtual-real correspondence with physical entities, wherein the virtual software is developed on Windows 10 through a Qt Creator lightweight Integrated Development Environment (IDE) by using a C + + programming language and adopting an MFC framework and a Tee Chart technology, and a software interface is designed according to module classification and comprises five functional areas of network communication, simulation operation, process configuration, data monitoring and equipment control; the functions of the virtual software are as follows: before the moving platform of the two-axis X-Y leather product cutting machine starts to process, simulating the production process of the product; selecting an optimal production scheme according to analog simulation, and selecting a module and a process; monitoring, judging and analyzing the state of a physical entity in the production process; carrying out optimization control on the production process according to the data;
4) a management system is established, and a remote Web user can log in at any time, check a production scheme and optimize system configuration; the management system adopts a Browser/Server mode, and the back end uses PHP and Mysql to develop according to MVC specification, so as to realize the functions of user login, permission judgment, information management, historical information base and view control module; a user can log in the system at a PC (personal computer) end or a mobile phone end through an account and a password of the system to perform information filling, checking, data downloading and production configuration operations, and an administrator publishes content, customizes user groups and authorities thereof, sets a module and performs importing and exporting operations of data backup;
5) analyzing and processing twin data, wherein the twin data comprises process planning data and actual production big data, the process planning faces physical entities of the two-axis X-Y cutting machine, virtual-real mapping and interactive fusion of full elements and full flows are carried out through server-side virtual software with high simulation degree, and process design and continuous optimization facing a production field are realized; and actual production data is recorded in real time in the running process of the digital twin system, and is matched with the expected process in process achievement degree, and the data is stored in a server side.
An embodiment of this example includes the steps of:
(1) determining the diameter and the cutting depth of a cutter of a physical platform of the cutting machine according to the thickness of the leather product to be processed, installing the cutter, and determining a related hardware connecting line. Drawing a CAD graphic file according to the graphic requirement of leather processing;
(2) importing the CAD graphic file into virtual software at a server end, configuring physical parameters such as an actual cutter style, a cutting depth and the like, carrying out speed planning on the CAD graphic file, carrying out simulation test by selecting various planning schemes such as ladder-type speed planning, S-type speed planning, parabolic speed planning and the like, and checking the optimal cutting effect;
(3) establishing communication connection between the server-side virtual software and the real physical platform, configuring the leather product cutting process according to the optimal cutting effect, and checking the real-time acquisition of production data. And (4) opening a power switch of the physical platform, and starting the processing of the leather products and the real-time transmission of data under the condition of normal communication.
(4) The remote Web user can log in a management system interface through the Internet, check the finished leather product processing order, click and download the production data and the process flow, establish a new leather product processing order and configure corresponding production data and the process flow.
Claims (1)
1. A control method of a digital twin-based two-axis X-Y leather product cutting machine is characterized by comprising the following steps:
1) establishing a five-dimensional structure model of a digital twin system of a two-axis X-Y leather product cutting machine, wherein the five-dimensional structure model comprises a physical entity, virtual software, a management system, twin data and connection, the physical entity is an objectively existing cutting machine motion platform, and a photoelectric encoder is arranged on a platform coaxial with a motor and is used for monitoring the physical state of each axis in real time; the virtual software is a faithful mirror image of a physical entity, is a server-side digital implementation form according to the composition content, the operation mode and the data rule of the cutting machine platform, and has the functions of simulation, prediction, execution and control; the management system opens a remote Web user login function, can check a production scheme in real time and optimizes system configuration; twin data comprises related data in a physical entity, virtual software and a management system, and a large amount of data is continuously recorded, updated and optimized along with the processing of the leather product; the connection is that the physical entity, the virtual software and the management system are connected in pairs to realize effective data communication;
2) establishing a physical entity, and establishing a motion control platform of the two-axis X-Y leather product cutting machine, wherein the physical entity is divided into an embedded local controller and a control object, and the control object is a two-phase hybrid stepping motor;
3) establishing virtual software, performing one-to-one virtual-real correspondence with physical entities, wherein the virtual software is developed on Windows 10 through a Qt Creator lightweight Integrated Development Environment (IDE) by using a C + + programming language and adopting an MFC framework and a Tee Chart technology, and a software interface is designed according to module classification and comprises five functional areas of network communication, simulation operation, process configuration, data monitoring and equipment control; the functions of the virtual software are as follows: before the moving platform of the two-axis X-Y leather product cutting machine starts to process, simulating the production process of the product; selecting an optimal production scheme according to analog simulation, and selecting a module and a process; monitoring, judging and analyzing the state of a physical entity in the production process; carrying out optimization control on the production process according to the data;
4) a management system is established, and a remote Web user can log in at any time, check a production scheme and optimize system configuration; the management system adopts a Browser/Server mode, and the back end uses PHP and Mysql to develop according to MVC specification, so as to realize the functions of user login, permission judgment, information management, historical information base and view control module; a user can log in the system at a PC (personal computer) end or a mobile phone end through an account and a password of the system to perform information filling, checking, data downloading and production configuration operations, and an administrator publishes content, customizes user groups and authorities thereof, sets a module and performs importing and exporting operations of data backup;
5) analyzing and processing twin data, wherein the twin data comprises process planning data and actual production big data, the process planning faces physical entities of the two-axis X-Y cutting machine, virtual-real mapping and interactive fusion of full elements and full flows are carried out through server-side virtual software with high simulation degree, and process design and continuous optimization facing a production field are realized; and actual production data is recorded in real time in the running process of the digital twin system, and is matched with the expected process in process achievement degree, and the data is stored in a server side.
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| CN110389534A (en) * | 2019-07-01 | 2019-10-29 | 东华大学 | A kind of Multi-axis motion control virtual experimental system based on the twin technology of number |
| CN110865607A (en) * | 2019-11-07 | 2020-03-06 | 天津大学 | Five-axis numerical control machine tool control method based on digital twinning |
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| CN111159793B (en) * | 2020-01-20 | 2023-08-01 | 兰州理工大学 | Modeling method and model system based on digital twin five-dimensional model 3D printer |
| CN111461338A (en) * | 2020-03-06 | 2020-07-28 | 北京仿真中心 | Intelligent system updating method and device based on digital twin |
| CN111930027A (en) * | 2020-10-10 | 2020-11-13 | 上海交大智邦科技有限公司 | Electromechanical and hydraulic combined simulation virtual debugging method and device |
| CN112526334A (en) * | 2020-11-17 | 2021-03-19 | 国网上海市电力公司 | Method and device for detecting state of direct current power transmission and distribution isolating switch based on digital twin system |
| CN112783091A (en) * | 2020-12-30 | 2021-05-11 | 湖南中南智能装备有限公司 | Industrial Internet digital twin-based numerical control machine tool monitoring method |
| CN113656981A (en) * | 2021-08-26 | 2021-11-16 | 石硕 | Modelica excitation type-based digital twin system construction method |
| CN114444735A (en) * | 2022-01-27 | 2022-05-06 | 中铁第四勘察设计院集团有限公司 | Intelligent error-proofing system and method for overhauling parts of rail transit |
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