Study On Framework And Key Technology Optimization Theory Of Marshalling Yards Intelligent Dispatching System (YIDS)

In this paper, the framework of Marshalling Yards Intelligent Dispatching System (YIDS) and its key technology—Optimizing Dispatching Stage Operation Plan were researched. Below is main work that has been done:1. Based on the analysis of current status at home and abroad of Intelligent Railway System, the framework of Marshalling Yards Intelligent Dispatching System (YIDS) was discussed. What's more, the problems and its theoretical research status of dispatching stage operation plan—the key in YIDS, were analyzed. The work has positive reference value for the study in this field deeply.2. Starting form the demand analysis of Marshalling Yards Intelligent Dispatching System(YIDS), by the principle of Structure Model Method in System Engineer, the structure and level of YIDS was analyzed concretely and a structure model of YIDS was put forward, which laid the foundation for the overall framework.3. The YIDS framework was studied and the function framework, logic framework and physical framework of Chinese Intelligent Dispatching System(YIDS) were set up. They reflected the idea and strategy to establish a sharing information platform through the integration and conformity of all sub-systems; integrate the optimal decision-making, dispatching command, information management, operation control integrated and achieve marshalling yards operation process control automation. The study could give guidance to the construction of new generation of marshalling yard intelligent dispatching system.4. The optimal problems of dispatching stage operation plan suited to the multi-structure stations were researched and a mixed 0-1 optimization model was built. The model described all the stage that a train could experience in marshalling yard---arriving of train, break-up of train, make-up of train, dispatching of train, besides the vehicle flow assignment of train, the arrival-departure line arrangement and the use plan of shunting locomotive.5. A model decomposed algorithm was offered. It could reduce the model complexity greatly. In the algorithm, the vehicle flow assignment of train was central issue, and while considering all sub-problems comprehensively, a local area dynamic optimization algorithm was offered. The model and algorithm validity has been confirmed through test examples, proving it could deal with the optimizing problems of yard dispatching stage operation plan of YIDS effectively.6.Accroding to the theory and method above, the software of Optimizing Dispatching Stage Operation Plan was developed. Then, lots of simulate computation and experiments were conducted, which further verified reliability and validity of the model and algorithm.