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LV Shuyu, DAI Xinfa, MA Zhong, GAO Yi, HU Zhekun. Research on Global Clock Synchronization Mechanism in Software-Defined Control Architecture[J]. Chinese Journal of Electronics. doi: 10.1049/cje.2021.00.059
Citation: LV Shuyu, DAI Xinfa, MA Zhong, GAO Yi, HU Zhekun. Research on Global Clock Synchronization Mechanism in Software-Defined Control Architecture[J]. Chinese Journal of Electronics. doi: 10.1049/cje.2021.00.059

Research on Global Clock Synchronization Mechanism in Software-Defined Control Architecture

doi: 10.1049/cje.2021.00.059
Funds:  This work is supported by the Science and Technology on Thermal Energy and Power Laboratory Open Foundation of China (No.TPL2019C01)
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  • Author Bio:

    was born in 1985. He received the M.S. degree from Wuhan University of Technology. He is a Ph.D. candidate of computer science and technology in Harbin Engineering University. His research interests include cloud control systems, edge computing and Industrial Internet of Things. (Email: lvsy709@126.com)

    was born in 1974. He received the Ph.D. degree in computer science from Harbin Engineering University. He is now a professor and Ph.D&Master supervisor in Wuhan Digital Engineering Institute. His research interests include distributed computing, virtualizaion technology and computer architecture

    was born in 1962. He received the M.S. degree in computer science from Harbin Engineering University. He is now a professor and Ph.D&Master supervisor in Wuhan Digital Engineering Institute. His research interests include fault-tolerant computing, computer system design and information security

    was born in 1984. He received the Ph.D. degree from Huazhong University of Science and Technology. He is now an associate professor and Master supervisor in Wuhan Digital Engineering Institute. His research interests include cloud computing, operating system and resource scheduling

    was born in 1986. He received the Ph.D. degree from University of Chinese Academy of Sciences. He is now an associate professor and Master supervisor in Wuhan Digital Engineering Institute. His research interests include computer architecture, heterogeneous computing and highly reliable system

  • Received Date: 2021-02-04
  • Accepted Date: 2021-11-15
  • Available Online: 2021-12-18
  • Adopt Software-Definition technology to decouple the functional components of the Industrial Control System in a service-oriented and distributed form is an important way for the Industrial Internet of Things to integrate Information Technology, Communication Technology, and Operation Technology. Therefore, this paper presents the concept of Software-Defined Control Architecture and describes the time consistency requirements under the paradigm shift of Industrial Control System architecture. By analyzing the physical clock and virtual clock mechanism models, the global clock synchronization space is logically divided into the physical and virtual clock synchronization domains, and a formal description of the global clock synchronization space is proposed. According to the fundamental analysis of the clock state model, the physical clock linear filtering synchronization model is derived, and a distributed observation fusion filtering model is constructed by considering the two observation modes of the virtual clock to realize the time synchronization of the global clock space by way of timestamp layer-by-layer transfer and fusion estimation. Finally, the simulation results show that the proposed model can significantly improve the accuracy and stability of clock synchronization.
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