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针对化工过程对安全性面临的问题与挑战,以感知控制论(Perceptual Control Theory,PCT)的层次性和信息处理与环境交互特性为科学基础,提出一种将信息物理融合系统(cyber-physical system,CPS)的概念和感知控制论相结合的PC-CPS模型。以此为基础,考虑化工过程的特点,构建化工过程安全运行的信息物理融合系统模型。该系统模型具有实时监测、信息共享、故障诊断、故障预测和基于知识的决策建议等功能,并对物理空间感知技术、信息空间融合技术及系统模型的实时性等关键技术进行分析。最后,通过环己烷无催化氧化过程的信息物理融合监控系统为例,描述并验证该系统模型可以用于化工过程,改善了系统运行的安全性。
In view of the problems and challenges to the safety of chemical process, based on the hierarchy of Perceptual Control Theory (PCT) and the characteristics of information processing and environment interaction, this paper proposes a solution to the problems of cyber-physical system , CPS) and Perceived Cybernetics (PC-CPS). Based on this, considering the characteristics of the chemical process, an information and physical integration system model for the safe operation of the chemical process is constructed. The system model has such functions as real-time monitoring, information sharing, fault diagnosis, fault prediction and knowledge-based decision-making and other key technologies. The key technologies of physical space perception, information space fusion and real-time of system model are analyzed. Finally, an information fusion system based on cyclohexane catalytic oxidation process is used as an example to describe and verify the system model can be used in chemical process and improve the safety of system operation.