Research On Enterprise Integration Technology In Manufacturing Grid

With the development of enterprise informatization, relatively independent applications have been established using different technologies. But among the systems, business processes are not integrated, manufacturing information is inconsistent and user interfaces are not uniform. Lean manufacturing and Just In Time(JIT) production mode require to build intelligent logistics management system based on the common platform, to optimize workshop scheduling, to achieve the complete integration of business processes, information and applications and to meet the purpose of lower the manufacturing costs, increase the utilization rate of the resource and accelerate time to the market.By investigating in-depth to the production and operation mode of a car supporting blanking enterprise, manufacturing grid architecture which is fit with the JIT mode has been established combined with the international cooperation project. The thesis plans the main functions of SOA based manufacturing grid and proposes the theories and methods of enterprise integration which includes process management based process integration, ontology based information integration and portal bases application integration.To meet the requirement of production management, the Petri-net based multi-dimensional Manufacturing Grid Workflow Meta-model is put forward which includes process model, organization model and resource model. The meta-model is described with XML DTD and the soundness id verified by mathematical way to obtain a business process model with strict definition and normal description for process integration.The core structure of task scheduling for the workflow is designed. The task scheduling rules such as mission-critical priority rule, first come first serve rule, the biggest task priority rule and the urgent tasks priority rule are built with the definitions of Express activities, emergency activities, middle-emergency activities and normal activities according to the time features of tasks. The Heuristic Optimization Algorithm is designed to follow the above rules. The workflow engine and model definition tool are developed with J2EE and Visual C++ separately. Thus, the ability of process management is gained.The information integration models of virtual database based joint model and data warehouse based integration model are proposed. The algorithm for computing the concept semantic similarity is realized by the names, attributes and levels of concept of the manufacturing area. The problem of the semantic ambiguity for data integration is resolved by semantic based manufacturing integration framework with information integration models.A unified authentication service framework is designed and built by taking Active Directory of the domain as authentication authority and the SSO authentication service is implemented with Kerberos and SPNEGO. The technical solution which meet the key requirement of user interface(UI) integration and user authentication integration is given by integrating the various UIs with Portlet.The products management system is implemented with the solution of the present research to overcome the previous problems. At the same time, the information sharing and unified authentication are taken into reality between the three systems of the cooperative enterprise to verity the possibility of the theories and methods of process integration, information integration and application integration.To sum up, the theories and methods for the enterprise integration proposed in the thesis help to resolve the decentrality, dynamic and heterogeneity problems in the manufacturing resources management and to achieve the informatization of product design and enterprise management, intelligent control of the production process as well as networking and globalization of advisory services. It is also the valuable practice for the thinking of advanced manufacturing such as digital and global manufacturing plan, enterprise alliance manufacturing, flexible manufacturing, agile manufacturing and enterprise integration in China.