Research On Technologies Of Dynamic Workflow Management Under PDM Environment

It faces to be even more keen competition environment, the new characteristic has appeared in the business process of enterprises, there are more and more kinds of the business process, the execution of the process becomes unpredictable too. All the changes lead to the enterprise's new request - workflow system's changeable ability at run time. Workflow Management System that PDM offered doesn't have changeable ability at flow running layer, therefore it is not suitable to the new environment of the enterprise presently. This thesis focuses on research of Workflow System that support the dynamic change at run time. And a Dynamic Workflow model – Smart FLOW is proposed.Based on Smart FLOW , we discuss flow controlling and organization way of user's data of dynamic work flow in detail in two respects of data flow and control flow; and for the execution of Smart FLOW, we put forward node execution rule and edge identification rule.This paper has studied the new problem brought by dynamic change of the process – runtime error. Propose a group of constraint rules, so as to ensure dynamic change cannot destroy process exactness and process integrality of datum of structure, maintain exactness and consistency of dynamic workflow system. We have put forward the implementation method of course-definition based dynamic change means. And to two key technology of the method: The compatible check-up and migration of the process instance, we have put forward the solution.For realize dynamic expansion of the Workflow System, flow scanning machine – change suggestion was put forward based on Smart FLOW. Afterwards two kinds of change suggestion are discussed in detail: Instance change suggestion and Experience change suggestion.Finally, on the basis of relevant theoretical research, we carry on the design and development of the prototype system on IntePDM.