Dynamic Workflow Modeling Based on Product Structure Tree

In order to solve the dynamic modification problem of workflow model in product development process,a method of dy- namic workflow modeling is presented based on product structure tree (PST).In the method, a dynamic node was introduced into a workflow template, and the refinement rule of a dynamic node was proposed. Through mapping the components of PTS onto the work- flow template,the component instances and their affiliation used as refinement input elements,then the dynamic workflow nodes were refined. Validation in the actual engineering case of large-scale antenna development shows that the workflow instance was constructed dynamically at run-time.