Reasearch And Simulation On Scheduling Strategy Of Automatic Storage And Retrieval System

With the rapid development of domestic economy and high requirements to communicate with foreign enterprises in recent years, modern logistics have received more and more attention due to creating significant economic effects by transferring goods in terms of time and location. Warehouse is an important element of modern logistics. Automated storage outperforms more evidently than traditional storage in various aspects. However, since it is also a complex integrated automated system, and scheduling affects the operation efficiency of the whole systems directly, researches on the scheduling problems of corresponding in-out warehouse have significant values in the field of engineering application.The theses put forward a logical solution about static state storage location assignment, simulate and analyzed the dynamic storage location assignment about goods in-warehouse/ex-warehouse based on reading large numbers of other people's research about scheduling strategy on warehouse. The main job of this thesis is briefly described as follows.1) Introduce automated storage and retrieval system's types key technologies and the flow of goods inside and outside warehouse. Summarize the situation about some researches on automated storage and retrieval system's storage location assignment inside and outside country. Dividing automated storage and retrieval into a static allocation of cargo space and dynamic allocation of cargo space.2) For the problem of static allocation of cargo space, this article establish the objective function group to optimize. Base on the thought of genetic algorithms to solve the problem of more than one aims, elicit a logical arithmetic and simulated for solve this arithmetic by Matlab, get a set of solution finally.3) For the dynamic allocation of cargo space. Simulated different strategies of in-out warehouse by Flexsim get the intuitionist three-dimensional process for in-out warehouse. Analyze this result, according to the efficiency of ASRSvehicle, estimate the disadvantage and advantage of different scheduling strategies. 4) Make a simulative example on storage location assignment use the reality parameter of Jiu Zhou Tong. Validate the scheduling strategy.