Computer Science ›› 2013, Vol. 40 ›› Issue (5): 24-30.

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Behavior Forecasting Model of Cyber-physical Systems

SHE Wei and YE Yang-dong   

  • Online:2018-11-16 Published:2018-11-16

Abstract: Cyber-physical system(CPS) is a new kind of interconnected system which integrates the calculation system,communication network,sensor network,control system and physical system.Since the forms of the communication,co-operation,and interaction among its heterogeneous units are complex,and there is no unified model to describe and analyze it at present,therefore,to model and forecast the behavior of CPS are a difficult point.Based on the hybrid system,fuzzy set theory and human factors method,we proposed a kind of fuzzy time hybrid Petri net(FTHPN).Through the modeling and quantitative analysis of a typical behavior of the CPS,the dynamic behavior forecasting and the state transformation of the CPS were realized.The simulation results verify the effectiveness of the model.This model can be used to analyze the relationship and interaction between the continuous state of physical world and the discrete event of information world of CPS.It will help study the uncertainty of CPS and asynchronous concurrent relationships among system composition units,hence has provided effective methods to forecast,assess,and real-time control CPS.

Key words: Cyber-physical system,Hybrid system,Fuzzy time hybrid Petri net,Behavior forecasting

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