Research on Synchronization Strategy of Distributed Joint Simulation Clock Based on Finite State Machine

Le résumé fourni par la source

As a complex, cross-disciplinary, cross-regional, and large-scale system, the vehicle-road-cloud integrated system necessitates the utilization of the Jacobi strategy within a distributed architecture to address the efficiency issues in multi-disciplinary co-simulation. When a discrete simulation platform is integrated into a distributed simulation architecture, it cannot guarantee the availability of output data at every clock-synchronized communication instant, leading to potential issues of data misalignment and timing disorder during the simulation process. This paper proposes a co-simulation strategy that employs a finite state machine (FSM) to maintain discrete signals. In situations where the discrete simulation platform cannot guarantee output data, the FSM is utilized to decompose the originally complex multiple control logic of the discrete simulation platform into a finite number of stable states, ensuring that the discrete simulation platform has output data at every communication instant to support the solution calculation of related simulation platforms. This approach not only accommodates the normal forwarding of data from continuous models but also does not require altering the original operational mechanisms of discrete models and systems. It represents a highly efficient modeling method with low coupling, providing more sophisticated scenario modeling tools for the co-simulation of vehicle-road-cloud integrated systems.

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