Real-time communication for manufacturing cyber-physical systems

Ngoc Tu Nguyen, Ming C. Leu, Xiaoqing Frank Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

The cloud manufacturing yields insights of manufacturing services over cyber space based on integration of advanced manufacturing with cloud computing. However, the different communication standards between the different system levels are main challenges for the integration of them without a conflicting communication. Ethernet appears as the best solution to support all levels for industrial manufacturing systems. Since the synchronous integration is fulfilled, the prerequisite for deciding the overall performance of systems is adaptable real-time communication. This motivates us to study the problem of designing a new real-time communication based on Ethernet standard to enable real-time processing for factory networks, termed Real-Time Ethernet (RTEthernet). The objective is to schedule maximum number of machines transmitting data through a controller in a data transmission window (Coordinated Cycle) as well as guarantee the real-time communication. The problem is called the Maximum Number of Real-time Data Transmission (MNRDT) problem. Two relevant solutions are proposed for addressing the MNRDT problem. Simulation results are provided to show the performance of proposed solutions.

Original languageEnglish (US)
Title of host publication2017 IEEE 16th International Symposium on Network Computing and Applications, NCA 2017
EditorsDimiter R. Avresky, Aris Gkoulalas-Divanis, Dimiter R. Avresky, Miguel P. Correia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781538614655
DOIs
StatePublished - Dec 8 2017
Event16th IEEE International Symposium on Network Computing and Applications, NCA 2017 - Cambridge, United States
Duration: Oct 30 2017Nov 1 2017

Publication series

Name2017 IEEE 16th International Symposium on Network Computing and Applications, NCA 2017
Volume2017-January

Other

Other16th IEEE International Symposium on Network Computing and Applications, NCA 2017
CountryUnited States
CityCambridge
Period10/30/1711/1/17

Bibliographical note

Funding Information:
V. CONCLUSION Guaranteeing real-time communication in manufacturing cyber-physical systems as well as maximizing the number of scheduled machines per controller is a challenging undertaking. In this paper, we investigated the problem of Maximum Number of Realtime Data Transmission (MNRDT). While the complexity of exact computation for the MNRDT problem is a significant obstacle, we overcome the obstacle by proposing two heuristic solutions, including the closest deadline based solution (CDBS) and the lowest consuming based solution (LCBS). The proposed two solutions can help maximize the total number of scheduled machines for each controller in a factory network as well as guarantee real-time communication. In the simulations to demonstrate the performance of CDBS and LCBS, EtherCAT [11] is used as a comparison. The simulation results showed that both the CDBS and LCBS provided better performance with a higher number of scheduled machines for a controller than the EtherCAT, and that the LCBS the best performance. ACKNOWLEDGEMENTS The research was supported by the U.S. National Science Foundation through grant CMMI-1551448.

Keywords

  • MAC protocol
  • Real-time communication
  • cyber-physical cloud manufacturing systems

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