The reliability of real-time embedded software directly determines the reliability of the whole real-time embedded sys- tem, and the effective software testing is an important way to ensure software quality and reliab...The reliability of real-time embedded software directly determines the reliability of the whole real-time embedded sys- tem, and the effective software testing is an important way to ensure software quality and reliability. Based on the analysis of the characteristics of real-time embedded software, the formal method is introduced into the real-time embedded software testing field and the real-time extended finite state machine （RT-EFSM） model is studied firstly. Then, the time zone division method of real-time embedded system is presented and the definition and description methods of time-constrained transition equivalence class （timeCTEC） are presented. Furthermore, the approaches of the testing sequence and test case generation are put forward. Finally, the proposed method is applied to a typical avionics real- time embedded software testing practice and the examples of the timeCTEC, testing sequences and test cases are given. With the analysis of the testing result, the application verification shows that the proposed method can effectively describe the real-time embedded software state transition characteristics and real-time requirements and play the advantages of the formal methods in accuracy, effectiveness and the automation supporting. Combined with the testing platform, the real-time, closed loop and automated simulation testing for real-time embedded software can be realized effectively.展开更多
采用UML分析与设计的业务信息系统,业务流程经过层层的抽象迭代,缺乏一种透明的业务流程实现。WF提供了可视化的业务过程编程模型,便于实现业务流程自动化,在对比分析WF State Machine和UML状态图的基础上,研究从UML状态图到WF State Ma...采用UML分析与设计的业务信息系统,业务流程经过层层的抽象迭代,缺乏一种透明的业务流程实现。WF提供了可视化的业务过程编程模型,便于实现业务流程自动化,在对比分析WF State Machine和UML状态图的基础上,研究从UML状态图到WF State Machine业务流程映射关系,选取UML中典型状态图,依据一定的命名转换规则,实现了从UML状态图分析设计到WF状态机业务过程可视化的构建,完成了动态测试。展开更多
This paper presents a model specifying requirements of real-time systems. Different from existing researches, this model mainly uses rules and templates to represent hierarchical FSMs (Finite State Machine). In this m...This paper presents a model specifying requirements of real-time systems. Different from existing researches, this model mainly uses rules and templates to represent hierarchical FSMs (Finite State Machine). In this model, one rule corresponds to one state transition of FSM and one template corresponds to one FSM. Rules and information with respect to a FSM can be written in a template. So templates include not only state diagrams, but also information that can not be described by FSM, such as performance requirements. The specification using this model consists of a collection of templates and it is easy for users to understand and to review. After introduced the related researches and principles of the model, this paper specifies requirements of a real-time system with this model, and discusses characters of this model in the end.展开更多
在实时系统的开发过程中,时间上的约束在系统早期的定量分析中起着非常重要的作用。UML作为一种图形化、面向对象的建模语言,其中的实时特性描述文件UML Profile for Schedulability,Performance and Time适用于对实时系统的刻画。在给...在实时系统的开发过程中,时间上的约束在系统早期的定量分析中起着非常重要的作用。UML作为一种图形化、面向对象的建模语言,其中的实时特性描述文件UML Profile for Schedulability,Performance and Time适用于对实时系统的刻画。在给定系统的实时状态图基础上,用相对应的随机Petri网模型进行定量分析,得到实时系统最终的分析结果,对系统开发有重要的指导意义。展开更多
基金supported by the Aviation Science Foundation of China
文摘The reliability of real-time embedded software directly determines the reliability of the whole real-time embedded sys- tem, and the effective software testing is an important way to ensure software quality and reliability. Based on the analysis of the characteristics of real-time embedded software, the formal method is introduced into the real-time embedded software testing field and the real-time extended finite state machine （RT-EFSM） model is studied firstly. Then, the time zone division method of real-time embedded system is presented and the definition and description methods of time-constrained transition equivalence class （timeCTEC） are presented. Furthermore, the approaches of the testing sequence and test case generation are put forward. Finally, the proposed method is applied to a typical avionics real- time embedded software testing practice and the examples of the timeCTEC, testing sequences and test cases are given. With the analysis of the testing result, the application verification shows that the proposed method can effectively describe the real-time embedded software state transition characteristics and real-time requirements and play the advantages of the formal methods in accuracy, effectiveness and the automation supporting. Combined with the testing platform, the real-time, closed loop and automated simulation testing for real-time embedded software can be realized effectively.
文摘采用UML分析与设计的业务信息系统,业务流程经过层层的抽象迭代,缺乏一种透明的业务流程实现。WF提供了可视化的业务过程编程模型,便于实现业务流程自动化,在对比分析WF State Machine和UML状态图的基础上,研究从UML状态图到WF State Machine业务流程映射关系,选取UML中典型状态图,依据一定的命名转换规则,实现了从UML状态图分析设计到WF状态机业务过程可视化的构建,完成了动态测试。
基金Supported by the National Natural Science F oundation of China(6 98730 35 ) and the Research Fund for the Doctoral Program of Hi
文摘This paper presents a model specifying requirements of real-time systems. Different from existing researches, this model mainly uses rules and templates to represent hierarchical FSMs (Finite State Machine). In this model, one rule corresponds to one state transition of FSM and one template corresponds to one FSM. Rules and information with respect to a FSM can be written in a template. So templates include not only state diagrams, but also information that can not be described by FSM, such as performance requirements. The specification using this model consists of a collection of templates and it is easy for users to understand and to review. After introduced the related researches and principles of the model, this paper specifies requirements of a real-time system with this model, and discusses characters of this model in the end.
文摘在实时系统的开发过程中,时间上的约束在系统早期的定量分析中起着非常重要的作用。UML作为一种图形化、面向对象的建模语言,其中的实时特性描述文件UML Profile for Schedulability,Performance and Time适用于对实时系统的刻画。在给定系统的实时状态图基础上,用相对应的随机Petri网模型进行定量分析,得到实时系统最终的分析结果,对系统开发有重要的指导意义。
