Research & Application On Schedule And Control Of Sliding Shoes Sorting System

With the productivity level grow, the potential in the logistics system is noticed. The base of modernize logistics is using quick, high-efficiency and automatic logistics equipment. But in our country they are separated and repeated severity because of lacking the necessary technology. It is very hard to control and manage at the same time. These restrict using exertion and enhancement. The purpose of this paper studies a new type automatic sorting system-sliding shoes sorting system which can content the market demand. The thesis not only studies the modeling theory and methods, but also the system simulation processes and methods. The methods are effective to analyze the complex system. Automatic sorting system is a complex and integral system. The key problem is how to enhance the sorting efficiency and benefit. Because of the complex control and the dynamic product condition, the control problem isn't solved only depend on people or computer. It should be solved by the integration of people, operational research and computer.At first, the paper explains the logistics history and the character of modern logistics. It divides the modern logistics into three hiberarchy paritions. Every hiberarchy is clear and independent. It studies a few methods and their merits in common use which can analyze the complex system from the systematic point of view. An effective technology is systematic simulation. It uses widely in many aspects. The thesis explains the systematic simulation processes and common arithmetic. Second, the paper explains many different automatic sorting systems in the world. It compares their character and using conditions, which demonstrate the essential of studying this problem. The thesis explains the method in detail by the research of sliding shoes sorting system. It uses the multiple modeling technology to divide the whole system, which combines the Petri net technology with the oriented object technology. A complex system can be divided into several subsystems by this way. Their tasks and the information flow are clear in these subsystems. It is suitable not only to design and application of the management system, but also to analyze the accessibility and finite of this system. This degressive modeling technology makes the model visual, direct and easy to expand. Feeder system is the bottleneck of enhancing efficiency in the automatic sorting system. So the paper studies this problem from two aspects. One is the static queue model; the other is the dynamic Petri net model. It provides the evidence to optimize the whole sorting system configure. Last, it is verifiedby computer simulation. The paper introduces the project design and function of every subsystems in sliding shoes sorting system. It uses the multi-course parallel method to control and harmonize so many equipments. This method can make instruction known to lower levels, which exchange and transfer information. The author designs the information management system of sliding shoes sorting system by the computer communication technology and database technology, which can integrate the logistics and the information flow.