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System of Systems Approach to Formal Modeling of CPS for Simulation-Based Analysis

  • Lee, Kyou Ho (Department of Information and Communications Engineering, Inje University) ;
  • Hong, Jeong Hee (Department of Industrial and Systems Engineering, KAIST) ;
  • Kim, Tag Gon (Department of Electrical Engineering, KAIST)
  • Received : 2014.07.16
  • Accepted : 2014.11.21
  • Published : 2015.02.01

Abstract

This paper presents a system-of-systems (SoS) approach to the formal modeling of a cyber-physical system (CPS) for simulation-based analysis. The approach is based on a convergence technology for modeling and simulation of a highly complex system in which SoS modeling methodology, hybrid systems modeling theory, and simulation interoperation technology are merged. The methodology maps each constituent system of a CPS to a disparate model of either continuous or discrete types. The theory employs two formalisms for modeling of the two model types with formal specification of interfaces between them. Finally, the technology adapts a simulation bus called DEVS BUS whose protocol synchronizes time and exchange messages between subsystems simulation. Benefits of the approach include reusability of simulation models and environments, and simulation-based analysis of subsystems of a CPS in an inter-relational manner.

Acknowledgement

Grant : 미래전자통신 인재양성사업단

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