Generalization and encapsulation method and system based on digital twin model of workshop

Patent metadata

Field	Value
Publication number	US-11086306-B1
Application number	US-202117155012-A
Country	US
Kind code	B1
Filing date	Jan 21, 2021
Priority date	Mar 12, 2020
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A generalization and encapsulation method based on a digital twin (DT) model of a workshop includes: classifying a device in a production line according to a basic operation and a functional characteristic of a process of the device; abstracting a commonality in terms of process action mode, process algorithm and action trigger mechanism; encapsulating according to a sequence characteristic of a process; comparing processes, and generalizing and encapsulating; encapsulating according to a time sequence, a space sequence and a logic characteristic of a specific process; storing a generalized and encapsulated process in a database; and calling the generalized and encapsulated process from the database to a device or a process. The generalization and encapsulation system includes an abstract process encapsulation module, a continuous process encapsulation module, a process action encapsulation module, a process algorithm encapsulation module, a database and a fast calling module.

First claim

What is claimed is:

1. A generalization and encapsulation method based on a digital twin (DT) model of a workshop that includes a production line including multiple stand-alone devices each of which has a pre-established digital model configurable in an open platform, the method comprising the following steps:
(1) classifying a device in a production line according to a basic operation and a functional characteristic of a process of the device;
(2) abstracting a commonality in terms of process action mode, process algorithm and action trigger mechanism in the production line, and generalizing and encapsulating a process based on the commonality;
(3) encapsulating a continuous process flow that meets a condition by considering a layout of devices in the production line according to a sequence characteristic of the process flow;
(4) comparing processes that are the same and/or similar, analyzing an action of the device in the process, and generalizing and encapsulating the process action and a corresponding process;
(5) encapsulating an applied algorithm and the corresponding process according to a time sequence, a space sequence and a logic characteristic of the specific process;
(6) storing the generalized and encapsulated process in a database of simulation modeling software; and
(7) calling the generalized and encapsulated process from the database to a device or a process according to a need of a customized production line,
wherein in step (1), a process is classified as one of cutting, drilling, shearing, installation, heat treatment, electrochemical, and testing according to a basic operation and a functional characteristic of the process, and
wherein in step (3), two or more continuous processes are generalized and encapsulated.

2. The generalization and encapsulation method based on a DT model of a workshop according to claim 1 , wherein in step (1), a process similar to laser cutting, tool cutting and water jet cutting is classified as cutting;
a process similar to drilling, boring or tapping is classified as drilling;
a process similar to stamping or punching is classified as shearing;
a process similar to fitting, buckling, pressing or screw locking is classified as installation;
a process similar to normalizing, annealing, quenching, tempering or electric hot air heating is classified as heat treatment;
a process similar to electroplating or electrochemical etching is classified as electrochemical; and
product testing is classified as testing.

3. The generalization and encapsulation method based on a DT model of a workshop according to claim 1 , wherein in step (4), the process action comprises a preparation action, a processing action and a finishing action.

4. The generalization and encapsulation method based on a DT model of a workshop according to claim 1 , wherein in step (6), the simulation modeling software is Demo3D.

5. The generalization and encapsulation method based on a DT model of a workshop according to claim 1 , wherein in steps (1) to (7), during encapsulation, an editable setting parameter is reserved for setting and modification when the encapsulated process is called subsequently.

6. A generalization and encapsulation system based on a DT model of a workshop that includes a production line including multiple stand-alone devices each of which has a pre-established digital model configurable in an open platform, the system comprising an abstract process encapsulation module, a continuous process encapsulation module, a process action encapsulation module, a process algorithm encapsulation module, a database and a fast calling module, wherein
the abstract process encapsulation module is used for classifying a process according to a basic operation and a functional characteristic of the process, and abstracting a commonality in terms of process action mode, process algorithm and action trigger mechanism;
the continuous process encapsulation module is used for encapsulating a continuous process flow that meets a condition by considering a layout of devices in a production line according to a sequence characteristic of the process flow;
the process action encapsulation module is used for comparing processes that are the same and/or similar, analyzing an action of a workpiece in the process, and generalizing and encapsulating the process action and a corresponding process;
the process algorithm encapsulation module is used for encapsulating an applied algorithm and the corresponding process according to a time sequence, a space sequence and a logic characteristic of the specific process;
the database is used for storing the generalized and encapsulated process;
the fast calling module is used for calling the generalized and encapsulated process fast from the database to a device or a process according to a need of a customized production line,
wherein the abstract process encapsulation module classifies a process as cutting, drilling, shearing, installation, heat treatment, electrochemical or testing according to a basic operation and a functional characteristic of the process; and
wherein the continuous process encapsulation module encapsulates two or more continuous process.

Assignees

• Univ Guangdong Technology

Inventors

• Liu Qiang
• Yan Duxi
• Chen Xin
• Leng Jiewu
• Zhang Ding

Classifications

• Y02P90/02

  Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS] · CPC title

• G05B2219/31338

  Design, flexible manufacturing cell design · CPC title

• G05B19/4188 Primary

  characterised by CIM planning or realisation · CPC title

• G05B19/41885 Primary

  characterised by modeling, simulation of the manufacturing system · CPC title

• G05B19/4189

  characterised by the transport system · CPC title