Journal of Software:2014.25(2):400-418

(上海市高可信计算重点实验室(华东师范大学),上海 200062)
Consistency Analysis of Timing Requirements for Cyber-Physical System
YIN Ling,CHEN Xiao-Hong,LIU Jing
(Shanghai Key Laboratory of Trustworthy Computing (East China Normal University), Shanghai 200062, China)
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Received:May 08, 2013    Revised:December 05, 2013
> 中文摘要: 信息物理融合系统(cyber-physical system,简称CPS)蕴藏着巨大的潜在应用价值.时间在CPS中起到非常重要的作用,应该在需求早期阶段明确.提出了一个基于逻辑时钟的CPS时间需求一致性分析框架.首先,构建了CPS软件的时间需求概念模型,提供时间需求和功能需求的基本概念,并给出了概念模型的形式化语义;然后,在模型制导下,从CPS的交互环境特性和约束中提取出其软件时间需求规约.基于形式化语义,定义了时间需求规约的一致性特性.为了支持形式化验证,将时间需求规约转换成NuSMV模型,用CTL公式表述要检测的特性,并使用NuSMV工具实施了一致性检测.
Abstract:Cyber-Physical Systems (CPSs) have great potentials in several application domains. Time plays an important role in CPS and should be specified in the very early phase of requirements engineering. This paper proposes a framework to model and verify timing requirements for the CPS. To begin with, a conceptual model is presented for providing basic concepts of timing and functional requirements. Guided by this model, the CPS software timing requirement specification can be obtained from CPS environment properties and constraints. To support formal verification, formal semantics for the conceptual model is provided. Based on the semantics, the consistency properties of the timing requirements specification are defined and expressed as CTL formulas. The timing requirements specification is transformed into a NuSMV model and checked by this well-known model checker.
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基金项目:国家自然科学基金(61202104, 91318301, 61332008, 61170084);教育部博士点基金(20120076120016);上海市知识服务平台项目(ZF1213) 国家自然科学基金(61202104, 91318301, 61332008, 61170084);教育部博士点基金(20120076120016);上海市知识服务平台项目(ZF1213)
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YIN Ling,CHEN Xiao-Hong,LIU Jing.Consistency Analysis of Timing Requirements for Cyber-Physical System.Journal of Software,2014,25(2):400-418