Design And Implementation Of A Dispatching And Monitoring System For The Medium Plate Mill Level2Communication Platform

The medium plate is a kind of steel with the thickness of4.5mm-100.0mm, which is mainly applied to machinery manufacturing, construction engineering, bridge construction and many other fields, it is an important raw material in infrastructure construction and heavy machinery manufacturing. The mill, as the core in the production line of the medium plate, plays a vital part in the production. Therefore, recently many iron and steel companies at home and abroad are trying to use computer control system to support the traditional production process, which not only can substantially increase production efficiency, but also can make the accuracy and reliability of production be guaranteed. However, key technologies of computer control system in most of the domestic iron and steel companies are from foreign countries, which lead to some problems such as monopoly of the core technology, high cost of maintenance in later stage,etc. Hence, it has a far-reaching significance for the market and the society to develop a general, cross-platform dispatching and monitoring system for the mill level2communication platform with independent intellectual property rights.CORBA, as a middleware, provides the interoperability of distributed heterogeneous object. The ORB, which is the object of what it defines, has ensured the communication and exchange of the objects among heterogeneous environment. ACE is a kind of object-oriented, open source and freely available component and toolkit, it has provided core concurrency and distribution mechanism for communication software. TAO is a concrete implementation of a free, open resource and real-time CORBA, it has the features of high-efficiency, predictability, scalability and end to end transmission.This thesis carries out a further study about key technologies of CORBA, ACE, TAO, OO4O. DW and OLAP with the production line of the medium plate of3500mm in Shougang as the research background. It is based on the research of prototype system which was finished in the libraries’open subject "The development for a system of the Medium Plate Mill Level2". This thesis also proposes a dispatching and monitoring system for the medium plate mill level2communication platform based on the communication framework of ACE+TAO+OO4O and the analysis and decision framework of DW+OLAP. This thesis conducts the outline design and detailed design for the system. At the same time, it analyzes the further relationship of communications among multiple processes and focuses on the problems of the database access methods and the data stream, this thesis pursues the detailed design of monitoring subsystem and self-learning subsystem, at last, it implements the dispatching and monitoring system for the medium plate mill level2communication platform.After verifying the system on mills PLC platform, it has been proved the correctness and feasibility of the design plan for the dispatching and monitoring system for the medium plate mill level2communication platform on the base of the communication framework of ACE+TAO+OO4O and the framework of analysis and decision of DW+OLAP, which are proposed in this thesis.At last, the entire development process of this system has been summarized, meanwhile, this thesis looks forward to the function of the system, the ability of extension and the fields of applications of it.