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arXiv 2101.10484eess.SYcs.SY
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复合信息物理系统建模

Compositional Cyber-Physical Systems Modeling

Georgios Bakirtzis, Christina Vasilakopoulou, Cody H. Fleming

摘要:

确保信息物理系统的正确行为需要大量的建模工作,特别是在工程和设计过程的早期阶段,当系统尚未用于测试或验证正确行为时。在这些早期设计阶段“把事情做好”的一个主要动机是,与已经开发硬件和软件的情况相比,改变设计的成本要低得多,而且效率更高。工程信息物理系统需要构建几种不同类型的模型,每种模型代表不同的视图,包括利益相关者的需求,系统行为和系统架构。此外,这些模型中的每一个都可以在不同的抽象级别上表示。形式化推理提高了分析的精度,并扩展了分析的类型,以确保需求、行为和体系结构的正确性。然而,每一个通常在不同的形式主义和相应的工具建模。目前,这种差异意味着系统设计人员必须手动检查不同的模型是否一致。手动编辑和检查模型容易出错,耗时,并且对模型本身设计中的任何更改都很敏感。接线图和相关的理论提供了一种方法来正式组织这些不同但相关的建模视图,从而产生了一种用于网络物理系统的组合建模语言。这种分类语言可以使不同模型视图之间的关系具体化,从而管理复杂性,允许系统模型的层次分解,并正式证明模型之间的一致性。

英文摘要:

Assuring the correct behavior of cyber-physical systems requires significant modeling effort, particularly during early stages of the engineering and design process when a system is not yet available for testing or verification of proper behavior. A primary motivation for `getting things right' in these early design stages is that altering the design is significantly less costly and more effective than when hardware and software have already been developed. Engineering cyber-physical systems requires the construction of several different types of models, each representing a different view, which include stakeholder requirements, system behavior, and the system architecture. Furthermore, each of these models can be represented at different levels of abstraction. Formal reasoning has improved the precision and expanded the available types of analysis in assuring correctness of requirements, behaviors, and architectures. However, each is usually modeled in distinct formalisms and corresponding tools. Currently, this disparity means that a system designer must manually check that the different models are in agreement. Manually editing and checking models is error prone, time consuming, and sensitive to any changes in the design of the models themselves. Wiring diagrams and related theory provide a means for formally organizing these different but related modeling views, resulting in a compositional modeling language for cyber-physical systems. Such a categorical language can make concrete the relationship between different model views, thereby managing complexity, allowing hierarchical decomposition of system models, and formally proving consistency between models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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