Study on Distributed Architecture, Information Integration and Access Control of Manufacturing Execution System

This paper focus on issues of distributed architecture, information integration and access control of manufacturing execution system(MES). A conceptual model of distributed MES is introduced to cover the shortages of traditional MES in this paper, and it is a promising solution for traditional MES to achieve flexibility, integration and interoperability. Information integration method of MES and other information systems based on Web service and ontology is defined and investigated, and an implementation process of integration with IVIES and ERP via application integration service management system is presented to demonstrate the feasibility and validity of the proposed information integration method. Fuzzy trustworthiness-involved role based access control model (FT-RBAC) was proposed for access control of MES. Formalization expression for fuzzy trustworthiness-involved role based access control model is analyzed in detail. An algorithm of fuzzy trustworthiness-involved role based access control is developed to implement fine-grained security management and access control of MES. Fuzzy trustworthiness-involved role based access control model proposed in this paper not only can solve the problem of uncertainty, risk and vulnerability coming from authorization, but also has high flexibility and security.