Application Research On PDM In Cooperative Design System

Cooperative design is a process in which a design team designs a product simultaneously, taking aim at a team work, and with the aid of a distributive collaborative environment of computer communication network. It can greatly shorten cycle of design and manufacture of a product, improve the quality of products, reduce production costs, improve service, and enhance the competition ability of enterprises. Cooperative design has become research spot among researchers and enterprises.Product data management(PDM) technique is a bridge of information communication among departments in an enterprise. By managing and controlling data information of products efficiently, PDM can shorten the cycle of design and manufacture, improve the quality and reduce the cost of products, such that PDM technique has been received special attention by enterprises.Based on the project of cooperative design management system of a research institute, this paper begins with the analysis of the basic functions of PDM and its application method for the workflow management and data products version management. And then, the key techniques of PDM supporting cooperative design and the method of workflow techniques and version management in PDM are discussed. A environment of cooperative design based on J2EE is constructed. The following aspects are involved in the thesis:· This thesis analyzes and researches on the function demand and key techniques of PDM in cooperative design system, presents a system structure of cooperative design based on PDM.· This thesis put forward a model of workflow management of cooperative design system based on PDM. During the process of practice, we imported relevant design patterns, and carried out the kernel of workflow engine in the service of workflow execution.· For the data version management based on PDM, this thesis analyzes the characteristic of data version management in the project, constructs a model of version management based on DAG, and put forward a new method for version transition which can solve the upgrade of data version and make efficient management of product data.· This thesis constructs a model of the system with UML, encapsulate the business logic in EJB and realizes the system based on J2EE.