Based On Gpss Marshalling Yard Simulation System Research And Design

With several major speed increasing in railway, the priority of passenger trains has made great influences on operating system of marshalling station. To most important, it has caused the lorry's arriving uneven, and can easily lead to the arriving time intensive. So, we need to take some new adjustments in order to ensure the quality and quantity of marshalling station's tasks. Based on this, we use a computer simulation method which adopt process scheduling algorithm in computer operating systems to optimize the efficiency of marshalling station, and to improve the capability of the marshalling station.This paper researched the methods, simulation model and realizing technic of the simulation in marshalling station based on the theory of the computer simulation. In the simulation method and model area ,it brought a new simulation method: progress scheduling algorithm. The new simulation method could solve the problem that the marshalling station is complex. In the simulation, the model is divided into declassification subsystem and classification-departure subsystem. How to reduce the waiting time of trains, improve efficiency of equipment and operation effect is the most important idea. GPSS language's basic format, basic composition, output as well as features suit the system, it is adopted in system simulation. Through the analysis of simulation results, it presents the advantages of dynamic programming model in this paper. The paper that proceedes from reality, combines theoretical analysis and uses the computer simulation has important function in the index calculating. It also has provided a science method for marshalling station's management.