The specification of modeling and analysis of real-time and embedded systems （MARTE） is an extension of the unified modeling language （UML） in the domain of real-time and embedded systems. Even though MARTE time m...The specification of modeling and analysis of real-time and embedded systems （MARTE） is an extension of the unified modeling language （UML） in the domain of real-time and embedded systems. Even though MARTE time model offers a support to describe both discrete and dense clocks, the biggest effort has been put so far on the specifi- cation and analysis of discrete MARTE models. To address hybrid real-time and embedded systems, we propose to ex- tend statecharts using both MARTE and the theory of hybrid automata. We call this extension hybrid MARTE statecharts. It provides an improvement over the hybrid automata in that： the logical time variables and the chronometric time vari- ables are unified. The formal syntax and semantics of hybrid MARTE statecharts are given based on labeled transition sys- tems and live transition systems. As a case study, we model the behavior of a train control system with hybrid MARTE statecharts to demonstrate the benefit.展开更多
This paper presents a new model of scenarios, dedicated to the specification and verification of system be- haviours in the context of software product lines （SPL）. We draw our inspiration from some techniques that ...This paper presents a new model of scenarios, dedicated to the specification and verification of system be- haviours in the context of software product lines （SPL）. We draw our inspiration from some techniques that are mostly used in the hardware community, and we show how they could be applied to the verification of software components. We point out the benefits of synchronous languages and mod- els to bridge the gap between both worlds.展开更多
通过研究一个具有代表性的UML/MARTE(unified modeling language/modeling and analysis of real time and embedded systems)模型向FIACRE(intermediate format for the architectures of embedded distributed components)形式模型的...通过研究一个具有代表性的UML/MARTE(unified modeling language/modeling and analysis of real time and embedded systems)模型向FIACRE(intermediate format for the architectures of embedded distributed components)形式模型的转换实例,探讨了异构模型之间在语义和语法层的相互转换问题.在语义层,通过模型转换技术构造语义映射规则,实现元语言之间的转换;在语法层,通过构造元模型的具体语法,反映元语言的语法规则,从而产生目标模型的程序实体.基于此实例研究,探讨了通用转换途径的相关框架和关键技术,并讨论了转换工作的优缺点和实用性.展开更多
针对航天嵌入式软件(aerospace embedded software,AES)时序需求复杂带来的时序需求定义不准确问题,提出一种基于MARTE(modeling and analysis of real-time and embedded systems)模型的数据流时序(data flow timing based on MARTE,DF...针对航天嵌入式软件(aerospace embedded software,AES)时序需求复杂带来的时序需求定义不准确问题,提出一种基于MARTE(modeling and analysis of real-time and embedded systems)模型的数据流时序(data flow timing based on MARTE,DFT-MARTE)模型,设计基于该模型的处理点缓存计算算法、时序偏离概率检测算法和时序序列分析算法。处理点缓存计算算法动态更新缓存空间,使后续时序检测正常执行;时序偏离概率检测算法利用多线程并发模拟时序特性,检测需求中时序偏离问题;时序序列分析算法是基于梯度下降算法,拟合时序序列,指导用户优化需求。该模型相比传统数据流模型更适用航天嵌入式软件,利于后续开发和维护,具有极高的应用价值。展开更多
文摘The specification of modeling and analysis of real-time and embedded systems （MARTE） is an extension of the unified modeling language （UML） in the domain of real-time and embedded systems. Even though MARTE time model offers a support to describe both discrete and dense clocks, the biggest effort has been put so far on the specifi- cation and analysis of discrete MARTE models. To address hybrid real-time and embedded systems, we propose to ex- tend statecharts using both MARTE and the theory of hybrid automata. We call this extension hybrid MARTE statecharts. It provides an improvement over the hybrid automata in that： the logical time variables and the chronometric time vari- ables are unified. The formal syntax and semantics of hybrid MARTE statecharts are given based on labeled transition sys- tems and live transition systems. As a case study, we model the behavior of a train control system with hybrid MARTE statecharts to demonstrate the benefit.
文摘This paper presents a new model of scenarios, dedicated to the specification and verification of system be- haviours in the context of software product lines （SPL）. We draw our inspiration from some techniques that are mostly used in the hardware community, and we show how they could be applied to the verification of software components. We point out the benefits of synchronous languages and mod- els to bridge the gap between both worlds.
文摘通过研究一个具有代表性的UML/MARTE(unified modeling language/modeling and analysis of real time and embedded systems)模型向FIACRE(intermediate format for the architectures of embedded distributed components)形式模型的转换实例,探讨了异构模型之间在语义和语法层的相互转换问题.在语义层,通过模型转换技术构造语义映射规则,实现元语言之间的转换;在语法层,通过构造元模型的具体语法,反映元语言的语法规则,从而产生目标模型的程序实体.基于此实例研究,探讨了通用转换途径的相关框架和关键技术,并讨论了转换工作的优缺点和实用性.
文摘针对航天嵌入式软件(aerospace embedded software,AES)时序需求复杂带来的时序需求定义不准确问题,提出一种基于MARTE(modeling and analysis of real-time and embedded systems)模型的数据流时序(data flow timing based on MARTE,DFT-MARTE)模型,设计基于该模型的处理点缓存计算算法、时序偏离概率检测算法和时序序列分析算法。处理点缓存计算算法动态更新缓存空间,使后续时序检测正常执行;时序偏离概率检测算法利用多线程并发模拟时序特性,检测需求中时序偏离问题;时序序列分析算法是基于梯度下降算法,拟合时序序列,指导用户优化需求。该模型相比传统数据流模型更适用航天嵌入式软件,利于后续开发和维护,具有极高的应用价值。
