CADS (cooperative autonomous driving systems) are software-intensive and safety-critical reactive systems and give great promise to our daily life, but system errors may not be identified in the design stage until the implement stage, and the cost to correct them will be more expensive later than the early stage. For designing trustworthy autonomous software systems, we have to deal with multiclock constraint models. SysML (System Modeling Language) meets increasing adoption in order to carry out system-level modelling and verification against abstract representations, but it suffers from semantic ambiguities in the design of safety-critical autonomous systems. The main objective is to investigate methods for coping with the design and analysis models simultaneously and to achieve semantic consistency based on mathematical foundations and formal model transformation. In this paper, we propose a method to combine the requirement modelling process with analysis process together for CADS safety and reliability guarantee. Firstly, we extend SysML metamodels and construct SysML profile for the CADS domain that could improve modelling correctness and enhance reusability. An instantiated CADS model has been designed by means of adopting a profile containing different key functional and nonfunctional attributes and behaviors. Secondly, we define formal syntax and semantic notations for modelling elements in the SysML state machine diagram and show transformation rules between the state machine diagram and the CCSL (Clock Constraint Specification Language) model. Semantic preservation is also proved using the bisimulation relation between them for rigorous mapping correctness. Thirdly, a cooperative autonomous overtaking driving case study on the highway scenario is used for illustration, and we use the tool TimeSquare to simulate CCSL specification execution traces at the system design stage.


    Access

    Download


    Export, share and cite



    Title :

    Multiclock Constraint System Modelling and Verification for Ensuring Cooperative Autonomous Driving Safety


    Contributors:
    Jinyong Wang (author) / Zhiqiu Huang (author) / Xiaowei Huang (author) / Yi Zhu (author) / Fei Wang (author)


    Publication date :

    2020




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Enhancing Transportation Safety with Infrastructure Cooperative Autonomous Driving System

    Noh, Jinhong / Jo, Yongwoo / Kim, Jooyoung et al. | Springer Verlag | 2024


    The Signal Synchronous Multiclock Approach to the Design of Distributed Embedded Systems

    Gamatie, Abdoulaye / Gautier, Thierry | Tema Archive | 2010



    CUSTOMIZATION AND SAFETY VERIFICATION OF AUTONOMOUS VEHICLE DRIVING BEHAVIOR

    DONDERICI BURKAY | European Patent Office | 2023

    Free access

    Track verification for autonomous driving

    LARSSON OSKAR | European Patent Office | 2022

    Free access