Study On Serveral Key Problems For Networked Manufacturing Resources Integration Platform

It's a significant way for enterprises to enhance core competence and to rapid respond to the market changing that integrating outside manufacturing resources based on the web technologies. In this dissertation, we focus on several important problems in networked manufacturing resource integration platform (NMRIP) , mainly combined with the project sponsored by the national 863 programs. This dissertation is mainly concerned with several critical problems of the NMRIP including system architecture and running model, resource modeling and encapsulating technology, resource researching and matching technology, resource evaluating and service chain formatting technology, and prototype system developing technology in the NMRIP.In chapter 1, the development and characteristics of advanced manufacturing technologies and management mode are reviewed and the inevitability of research on networked manufacturing is analyzed. The relating problems in resource management for networked manufacturing are discussed in detail; the research necessity about them and the objective of this dissertation is then pointed out. The research frame is presented after the state of the art and research status in related resource management for networked manufacturing problems are reviewed.For a more thorough analysis and description on natural characteristics of the NMRIP, and in order to provide methods the instructions for research , development, implementation, maintenance and optimized running of the NMRIP, chapter 2 firstly takes function, performance and security requirement analysis of the NMRIP. Combined with some relating research status and resource management characteristics of networked manufacturing, connotation of the NMRIP is promulgated. System architecture and function model based on J2EE/Web Service of the NMRIP are proposed. This dissertation provides a running model and mechanism of the NMRIP which based on resource service provider. As far as safety concerned, the dissertation proposes an access control model based on task and role.Manufacturing resource model and encapsulating is to solute two critical problems in the NMRIP, such as namely inserts namely uses and no different understand for the same resource. Chapter 3 firstly takes requirement analysis on manufacturing resource modeling. From resources classification, resources logic level and formalized definition, the dissertation carries on the integrity comprehensive description to the manufacture resources. In object level, a networked manufacturing total model based on UML is proposed; in semantic level, a networked manufacturing semantic model based on OWL is proposed; in data level, a networked manufacturing data model based on XML is proposed. As far namely inserts namely uses requirement as concerned, the dissertation provides a encapsulating solution based on WSFR for networked manufacturing resources.In order to fast and effectively retrieve some manufacturing resources which is satfied with QoS restraints and requirements of special task. Chapter 4 firstly provides manufacturing task model based on OWL and its restraints formalized definition, proposes a task allocating solution which based on BOM and case database. A algorithm based on synthesis semantics for retrieving and matching candidate resources service is presented, the algorithm synthesizes such information as type, semantic, input/output parameters and QoS restraint of resource service, and realizes multi-perspective to retrieval resources service based on the semantic.In order to solve such problems as manufacturing resources selecting, evaluating and resource service chain constructing which are based on multi-objective restraints. Chapter 5 proposes evaluating indexes and algorithm based on fuzzy AHP for selecting networked manufacturing resource services. Selection and realization process for networked manufacturing resource services are discussed in detail. Networked manufacturing task assignment process and mechanism based on auction are proposed. A constructing algorithm based on ant system for networked manufacturing resource service chain is presented, and resources service chain construction examples separately based on time, cost and time cost synthesis are provided.In chapter 6, based on the above mentioned theory, a prototype of networked manufacturing resources integration platform system is provided. The prototype system has confirmed the theories and the methods which state in the paper is effective and feasible.Some of the details of the current implementation are drawn in chapter 7 and conclude with future research directions.