基于STeC-Stateflow转换系统的实时系统仿真与验证方法

物联网以及信息物理融合系统对形式化建模提出了新的挑战, 引入了实时系统规范语言STeC, 为刻画实时系统的时空一致性提供了规范语言。针对STeC语言建立STeC至Stateflow自动转换系统, 提出一种基于STeC至Stateflow转换的仿真及验证方法, 该方法使用STeC语言对实时系统进行形式化建模, 再建立实时监控的Simulink仿真模型, 并使用Checkmate对系统进行安全性验证。通过对京沪高铁运行的实例研究, 表明该方法对高铁运行系统实时仿真的有效性, 并能够验证高铁运行系统的安全性。

Real-time system simulation and verification approach based on STeC to Stateflow transformation system

Internet of Things or cyber-physical systems provide a new challenge for formal modeling methods related to the aspect of physical elements such as location and time. Recently, this paper introduced a specification language called STeC to stress the spatio-temporal consistency for real-time systems. The operational and denotational semantics of and tool set related to this language have been given. The aim of this paper was to establish a STeC to Stateflow automatic transformation system and to propose a simulation and verification approach based on this transformation system. It firstly gave a formal model for an object system in STeC language, and then set up a real-time monitoring simulation model using Simulink. After that, it presented a verification approach for the system safety property based on Checkmate. Finally, it gave a case about Jinghu Gaotie (high speed train) running timetable to show that the proposed approach is effect and usable.