A Research On Manufacturing Resource Encapsulation Mechanism For Manufacturing Grid

Grid computing, an emerging conception is a growing information technology. It represents an advanced technology and infrastructure, and becomes another major scientific and technological progress after Internet. It aims to achieve resource sharing and collaborative working under the virtual environment, so that the information and resource island can be eliminated. Based on grid conception, this thesis put forward the conception of manufacturing grid which can use grid, internet or special networks to link the widely distributed manufacturing resourcesManufacturing grid, which is based on network-enabled manufacturing, adequately made use of the open grid system framework--Open Grid Service Architecture (OGSA), common, standards, normative and unified platform and tools, in order to build a generic, normal and standard mode in network manufacturing for manufacturing. Grid not only can achieve resources sharing, collaboration, lower manufacturing costs, raise the utilization ratio of resources, and accelerate time-to-market, but also can provide great flexibility and opening. That is to say, it can be extended to every corner all over the world, covering all modern manufacture resources and manufacture system, and forming the global manufacture net finally. Because of superiority, the developed countries have rapidly readjusted their strategy of science and technology, and consider manufacturing grid as an important research direction, has made the development plan of the manufacturing technology ,and the most basic purposes of these plans are to realize the network encapsulation of resources at first.Within manufacturing grid environment, manufacturing resource description is the basis of the resources sharing and collaboration, resource discovery, resource storage, encapsulation and search, and so on. In this thesis, the main objectives and contents including:(1) Firstly, this thesis has analyzed the importance and the urgent demand from manufacturing industrial enterprises on collaboration and manufacture resource sharing in manufacture industry, the main difficulties and challenges to solve collaboration and sharing of resource was identified.(2) In order to establish a practical prototype for the manufacturing grid, two kinds of the system architectures and related technologies of computing grid (the structure of five layers sandglass and Open Grid Service Architecture) were in depth analysed and studied, as well as the related technologies such as SOAP,WSDL,UDDI technology in Globus and Web Service.(3) The main challenge within the manufacturing grid has been in depth analyzed. One of the key technology in manufacturing grid is how to extract and describe and express the manufacturing grid resources. In this thesis, an new approach was proposed to describe the manufacturing resources which is based on STEP/XML/WSDL according to the attribute of manufacture resource and definition, characteristics, classification model, etc. Manufacturing resource description for manufacturing grid was proposed and validated with an example about SolidWorks of applying system resource.(4) After the study of the Grid-enabled Manufacturing System Architecture, the thesis has analysed the encapsulation of manufacturing resources in enterprises in order to provide the grid-enabled services, registration and discover of grid services. The system framework of resource collaborative sharing was devised and the resource encapsulation of manufacturing grid based grid service was implemented. This consists of the theoretical foundation roadmap for the optimal allocation of manufacturing resources and process control as well as related issues, offered advanced practical way to improved the competitive advantage of enterprises.