A Behavior Modeling Method of Digital Twin Manufacturing Cell Based on Timed Automata

Abstract

The invention discloses a behavioral modeling method of a digital twin manufacturing unit based on a time automaton, investigates the physical entity composition and processing requirements of the manufacturing unit, obtains behavioral characteristics and corresponding time parameters, and aims at specific processing tasks based on heuristics The intelligent algorithm generates the running sequence of manufacturing unit processing equipment including the unique identification number, process number, processing equipment identification number and processing time; constructs the time automaton model of processing equipment, transfer equipment, buffer zone and storage; The core constructs a timed automaton network to generate the behavior model of the manufacturing unit; according to the operation sequence of the processing equipment, it generates the overall behavior sequence of the manufacturing unit including the equipment operation sequence and the WIP status tracking sequence, which is used for the execution analysis of the manufacturing unit twin. The invention effectively and accurately describes the behavior logic of the manufacturing unit, and improves the self-organization, self-adaptation and self-decision-making capabilities of the manufacturing unit.

Description

technical field [0001] The invention belongs to the technical field of manufacturing system automation, and in particular relates to a timed automata-based digital twin manufacturing unit behavior modeling method. Background technique [0002] Manufacturing is the pillar industry of the national economy. The integration and development of the new generation of information technology and manufacturing represented by cloud computing, Internet of Things, edge computing, big data analysis and artificial intelligence has become the main feature and development direction of the manufacturing industry in the information age. Digital twins can establish a two-way dynamic connection between the physical world and the virtual world. It is a key enabling technology to realize the integration of manufacturing information and physics and promote the application of intelligent manufacturing. The digital twin needs to realize the model construction under multi-disciplinary and multi-field...

AI Technical Summary

Problems solved by technology

Taking impeller processing as an example, there are multiple processes involved. Under the intelligent workshop system, the interaction between processes is completed by robots and the handling and storage system, and the interaction between signal flow, control flow, and workpiece flow is highly coupled and complex.

The existence of various interactive behaviors becomes very complicated for the programming and overall operation control of the PLC or program of the workshop master control system

On the other hand, most of the research on the modeling of the digital twin system of the existing manufacturing unit focuses on the single equipment, the specific process of processing or the production management stage, and there is a lack of a more reliable and accurate modeling method for the behavioral logic operation modeling at the workshop equipment level

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