一种离散连续混成的时空事件驱动的CPS体系架构

为描述信息物理融合系统(cyber-physical system,CPS)中离散信息系统和连续物理系统交互融合的混成特性,基于混成自动机理论,结合多智能体系统(multi-agent system,MAS)和时空事件驱动方法,提出一种CPS体系架构.该架构用改进的混成自动机理论刻画了离散空间和连续状态混成的CPS体系架构的主体,同时定义了基于时空事件的CPS事件,设计了基于MAS的CPS端,并运用定义不同功能的CPS端和CPS事件驱动机制解析了CPS体系架构内部信息物理交互反馈过程.最后以车速调控系统为例,采用提出的CPS体系架构分析了协同驾驶过程中单一车辆内部速度调控的信息物理融合过程,并对其进行了形式化描述,实例的形式化过程表明提出的体系架构的有效性.构建的CPS体系架构为刻画CPS的本质特征提供了新的方法.

A hybrid discrete and continuous CPS architecture driven by spatial-temporal event

In order to describe the hybrid characteristics of the discrete cyber system and the continuous physical system, a novel CPS architecture is proposed based on hybrid automata model, Multi-Agent System (MAS) and spatial-temporal event driven mechanism. The main body of our CPS architecture is constructed based on improved hybrid automata theory. Meanwhile, by defining spatial-temporal event-based CPS event, designing the MAS-based CPS client architecture, and using the defined CPS clients with different functions and CPS event driven mechanism, the inherent cyber physical interaction and feedback process of the CPS architecture is analyzed. Finally, taking the vehicular velocity regulation and control system for instance, the inherent cyber-physical fusion process of vehicular velocity regulation and control in cooperative driving system is analyzed and formalized with our proposed CPS architecture, and the formalization process demonstrates the effectiveness of our proposed CPS architecture. The proposed CPS architecture provides novel thoughts and methods for describing the inherent characteristics of CPS.