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| 1 | 基于NuSMV的AADL模型形式化验证技术显示文摘结构分析描述语言(AADL)是一种描述任务关键嵌入式系统架构和行为的建模语言,在航空航天领域广泛被应用。为验证AADL模型的任务关键属性和系统行为的正确性,提出基于NuSMV(新符号模型检查器)的AADL模型形式化验证方法。首先,覆盖AADL模型的所有软件构件和行为特征,提出了AADL模型到NuSMV模型的映射规则和转换算法;其次,采用图同构方法分析了转换算法的正确性;然后,在NuSMV模型中采用时态逻辑公式对AADL模型中待验证属性进行描述,以验证AADL模型中安全性、活性和嵌套模态配置的正确性;最后,以飞行控制系统为例,详细阐释了基于NuSMV的AADL模型形式化验证方法,并给出验证属性的统计信息。 | 刘畅 蒋永平 马春燕 张涛 | 2022 | 航空学报2022，43，3： | 3 |
| 2 | Polychronous automata and their use for formal validation of AADL models显示文摘This paper investigates how state diagrams can be best represented in the polychronous model of computation (MoC) and proposes to use this model for code validation of behavior specifications in architecture analysis & design language (AADL). In this relational MoC, the basic objects are signals, which are related through dataflow equations. Signals are associated with logical clocks, which provide the capability to describe systems in which components obey multiple clock rates. We propose a model of finite-state automata, called polychronous automata, which is based on clock relationships. A specificity of this model is that an automaton is submitted to clock constraints, which allows one to specify a wide range of control-related configurations, being either reactive or restrictive with respect to their control environment. A semantic model is defined for these polychronous automata, which relies on boolean algebra of clocks. Based on a previously defined modeling method for AADL software architectures using the polychronous MoC, the proposed model is used as a formal model for the AADL behavior annex. This is illustrated with a case study involving an adaptive cruise control system. | Thierry GAUTIER Clement GUY Alexandre HONORAT Paul LE GUERNIC Jean-Pierre TALPIN Loic BESNARD | 2019 | Frontiers of Computer Science2019，13，4： | 1 |
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