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Journal of Information Science and Engineering, Vol. 37 No. 1, pp. 93-105

Dynamic Production Scheduling of Digital Twin Job-Shop Based on Edge Computing

Key Laboratory of Advanced Manufacturing Technology
Guizhou University
Guiyang, 550025 P.R. China
E-mail: waterprint2018@163.com

The current production scheduling models cannot effectively enable the real-time interaction between information space and physical space. To dynamically schedule twin digital job-shop, this paper attempts to realize the dynamic scheduling of digital twin jobshop (DTJ) based on edge computing. First, the architecture of the DTJ was established by adding the digital twin between the business management layer and the operation execution layer of the traditional job-shop. On this basis, the DTJ was fully modelled, and the manufacturing process was monitored, analyzed and managed remoted by edge computing. To realize dynamic scheduling, a DTJ scheduling model was established through data mining. The model consists of two parts: a data collection model and a multischeduling knowledge model. Finally, the proposed DTJ scheduling model was verified through simulation on an actual job-shop. The research results shed new light on the optimization of manufacturing process in various types of job-shops.

Keywords: digital twin, edge computing, job-shop scheduling, manufacturing process, data mining

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