Unified Industrial Cyber-Physical Systems Modelling and Performance Analysis Under Cyber-to-Physical Attacks

An increasing number of factories are transitioning to industrial cyber-physical systems (iCPSs), which pose the threat of cyberattacks. To simulate and analyze the dynamic behavior of iCPS under cyber attacks, a unified iCPS model that integrates cyber and physical systems with profound interactions is indispensable. On the basis of a generic CPS architecture, we systematically model cyber and physical systems as discrete state-space equations, and simulate packet loss and delay in communication using Markov chains. Models for denial-of-service (DoS) attacks and false data injection (FDI) attacks have been delineated and applied to the unified iCPS model. Ultimately, the experimental results corroborate the feasibility and efficacy of the unified iCPS model. Furthermore, recommendations and guidelines are proposed to bolster the cybersecurity of bilateral control iCPSs.