College of Mathematics and Computer Science, Zhejiang Normal University, Jinhua 321004, China.
Sensors (Basel). 2021 Apr 15;21(8):2794. doi: 10.3390/s21082794.
With the advent of the Internet of Everything era, the Industrial Internet is increasingly showing mutual integration and development. Its core framework, the industrial CPS (Cyber-Physical Systems), has received more and more attention and in-depth research in recent years. These complex industrial CPS systems are usually composed of multiple interdependent sub-networks (such as physical networks and control networks, etc.). Minor faults or failure behaviors between sub-networks may cause serious cascading failure effects of the entire system. In this paper, we will propose a security scheme based on intranal-adding links in the face of the integrated and converged industrial CPS system environment. Firstly, by calculating the size of the largest connected component in the entire system, we can compare and analyze industrial CPS systems' security performance under random attacks. Secondly, we compare and analyze the risk of cascading failure between integrated industrial CPS systems under different intranal-adding link strategies. Finally, the simulation results verify the system security strategy's effectiveness under different strategies and show a relatively better exchange strategy to enhance the system's security. In addition, this paper's research work can help us design how to further optimize the interdependent industrial CPS system's topology to cope with the integrated and converged industrial CPS system environment.
随着万物互联时代的到来，工业互联网日益呈现出相互融合、共同发展的趋势。其核心框架——工业 CPS（信息物理系统）近年来受到越来越多的关注和深入研究。这些复杂的工业 CPS 系统通常由多个相互依存的子网（如物理网络和控制网络等）组成。子网之间的小故障或失效行为可能会导致整个系统的严重级联失效效应。在本文中，我们将提出一种基于内部添加链路的安全方案，以应对集成和融合的工业 CPS 系统环境。首先，通过计算整个系统中最大连通分量的大小，我们可以比较和分析随机攻击下工业 CPS 系统的安全性能。其次，我们比较和分析了不同内部添加链路策略下集成工业 CPS 系统之间的级联失效风险。最后，仿真结果验证了不同策略下系统安全策略的有效性，并展示了一种相对较好的交换策略来增强系统的安全性。此外，本文的研究工作可以帮助我们设计如何进一步优化相互依存的工业 CPS 系统的拓扑结构，以应对集成和融合的工业 CPS 系统环境。
