Digital twin control logic generation method for complex cyber-physical products shared by virtual and real

Abstract

The invention discloses a digital twin control logic generation method for complex cyber-physical products shared by virtual and real. The production process of complex cyber-physical products is divided into layers, divided into system layer, module layer and mechanism layer; two Petri net models are used to model the production process of complex cyber-physical products; The controller control logic program and the upper computer control logic program are converted; the generated control logic program is deployed on the real product and its digital twin respectively. The invention achieves the automatic conversion of the digital twin model to the control logic program of the micro-controller and the upper computer, thereby realizing the rapid deployment and generation of the control logic of complex cyber-physical products.

Description

technical field [0001] The invention relates to a method for generating control logic in the production process of a product, in particular to a method for generating control logic for digital twins of complex cyber-physical products shared by both virtual and real. Background technique [0002] With the development of Industry 4.0 technology, product design, manufacturing and maintenance are increasingly emphasizing digitalization and customization. The traditional computer-aided design technology that only verifies product design in virtual space is too ideal to meet the requirements and can realize the whole life of the product. The digital twin technology of smooth migration of virtual and real spaces and two-way mapping in the cycle has become a new alternative method. In particular, for a complex product with electromechanical coupling, it constitutes a cyber-physical system, and the information component composed of upper computer, microcontroller and network componen...

AI Technical Summary

Problems solved by technology

At present, commonly used modeling methods such as directed graph method, entity flow graph method, IDEF method, Markov chain and other methods are usually used in discrete event systems, and cannot accurately perform complex cyber-physical products with discrete / continuous hybrid characteristics. full description

[0005] At present, for the control logic of complex cyber-physical products, the hierarchical method based on the big data model is usually used to realize the real-time communication between the physical equipment and the information layer, but it is slightly insufficient in terms of model intuitiveness and mathematical formalization

In terms of logical abstraction and physical representation, it is impossible to simultaneously represent abstract state information and specific physical execution data and the conversion mapping between them

In addition, it is impossible to verify in the form of independent simulation in the early design, and to reflect the status of real product process execution driven by data

Images