一种信息物理融合系统行为预测模型  

Behavior Forecasting Model of Cyber-physical Systems

作　　者：佘维[1,2] 叶阳东[1] 

机构地区：[1]郑州大学信息工程学院,郑州450052 [2]北京交通大学轨道交通控制与安全国家重点实验室,北京100044

出　　处：《计算机科学》2013年第5期24-30,47,共8页Computer Science

基　　金：国家863计划资助项目(2011AA110501);国家自然科学基金项目(61170223);国家重点实验室开放课题基金(RCS2009K003);河南省重点科技攻关项目(122102210004);湖南省科技攻关计划项目(2012FJ3092)资助

摘　　要：信息物理融合系统(CPS)是一类集成了计算系统、通信网络、传感器网络、控制系统和物理系统的新型互联系统。由于CPS内部异构单元之间的通讯、协同和交互的形式错综复杂,目前尚无统一的模型进行描述和分析,因此对其行为的建模和预测是一个难点问题。首先以混杂系统、模糊集理论和人因学方法为基础,提出一种模糊时间混合Petri网,随后通过对一类典型CPS的行为进行建模和分析,实现了CPS动态行为和状态迁移的预测,最后以仿真数据验证了模型的有效性。该模型可用于分析CPS中的物理世界连续状态和信息世界离散事件之间的联系和交互,有助于研究CPS中的不确定性问题和系统组成单元之间的异步并发关系,为CPS的行为预测、状态评估和实时控制提供了有效方法。Cyber-physical system（CPS） is a new kind of interconnected system which integrates the calculation system, communication network, sensor network, control system and physical system. Since the forms of the communication, co- operation, and interaction among its heterogeneous units axe complex, and there is no unified model to describe and ana- lyze it at present, therefore, to model and forecast the behavior of CPS are a difficult point. Based on the hybrid system, fuzzy set theory and human factors method, we proposed a kind of fuzzy time hybrid Petri net（FTHPN）. Through the modeling and quantitative analysis of a typical behavior of the CPS, the dynamic behavior forecasting and the state transformation of the CPS were realized. The simulation results verify the effectiveness of the model. This model can be used to analyze the relationship and interaction between the continuous state of physical world and the discrete event of information world of CPS. It will help study the uncertainty of CPS and asynchronous concurrent relationships among system composition units, hence has provided effective methods to forecast, assess, and real-time control CPS.

关 键 词：信息物理融合系统 混杂系统 模糊时间混合Petri网 行为预测 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]