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Modeling And Optimal Methods Research Of The Railway Container Transportation Procedure Based On Petri Nets

Posted on:2009-11-09Degree:MasterType:Thesis
Country:ChinaCandidate:Y J ZhangFull Text:PDF
GTID:2132360242974805Subject:Systems analysis and integration
Abstract/Summary:PDF Full Text Request
With the development of railway container transportation, the advantages of container transportation are more and more evident, and it is playing an important role. However, Due to the constraints of environment and other factors in China, there are still many problems in the work flow of railway container transportation. In order to analyze the work flow better, it is important to establish an appropriate model. The objective of business process optimization is to improve the efficiency. It can strengthen the competitive ability of railway container transportation. So the business process analysis and optimization of container transportation is very important.There are many methods used for the modeling of business process. Petri nets are a better choice because of the strict mathematical definitions and analysis methodology. This paper concluded the research status of Petri nets. And then, Petri nets were selected as the modeling tool.Based on the field research of Yangpu and Beijing east station, the procedure of railway container transportation is analyzed. Then, the Petri nets models of container sending, arrival and transfer operations are designed. And then, ExSpect software was used to simulate the Petri nets model of container sending operation. It is found that one of the reasons results in the inefficiency is that the information can't be shared.RFID can identify the number and other attributes of containers automatically. It can improve the automatic level of railway container work. The detailed application solution in the access to container yard is discussed in this paper. The solution can speed up the container to yard and implement the automatic access control. On the basis of this solution, the value-added strategy and parallel strategy were used to the optimization. And then, the optimal model was designed. The result of simulation was that the average cycle time was shortened. It proved that the optimal method is effective.
Keywords/Search Tags:Railway containers, Petri nets, Sending operation, Simulation and optimization
PDF Full Text Request
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