Multi-resolution entities aggregation and disaggregation method for train control system modeling and simulation based on HLA

Train control system modeling and simulation based on Multi-resolution modeling method could replicate the real system operation precisely and efficiently. During simulation, the resolution level of system model could be switched from high to low or low to high according to real-time simulation needs. In order to realize the resolution switching of system model, based on High Level Architecture (HLA), a new multi-resolution modeling method called multi-resolution entities aggregation and disaggregation method is proposed. By adopting HLA simulation environment, operable external interface could be realized to receive manual resolution switch information. With combination of both traditional multi-resolution modeling methods, which are multi-resolution entity method and aggregation and disaggregation method, could solve the problem of model data resolution mapping and also support concurrent operation of models from different resolution levels. A simulation example of train operation control system was modeled and simulated based on this method and demonstrated advantages.