SEMIGRAPHICAL MODEL OF RAILWAY STATIONS OPERATION.

Semigraphical model of railway stations operation for technical and operational evaluation of their technology is presented in the paper. The paper is aimed at improving the model structure to simplify the mechanical engineer's interaction with a computer at the stage of a formal description of the model. In the simulation, railway station is considered as a complex system, in which maintenance of facilities by technical means and executors is carried out by performing manufacturing operations with them in accordance with the process. The developed semigraphical model includes the model of the station technical support, the model of the station operation, a list of serviced facilities, list of facility service technologies. Construction of these models is performed using the methods of graph theory and object-oriented analysis. The proposed model enhances the rate of human-machine interaction through automated insertion of the full range of operations that meet the facility service technology, automated modification of groups of operations and automated calculation of the station operation indicators in the schedule. The model is implemented as a supplement to the AutoCAD package. Using the proposed semigraphical model allows to reduce the load on mechanical engineers in developing operation technologies of stations and complex analysis of their operation by reducing routine operations. [ABSTRACT FROM AUTHOR]