PDM系统中工作流与过程管理模型的建立

Building of workflow and process management model in PDM

介绍了PDM系统中工作流和过程管理的功能和组件层次,探讨了工作流管理系统的体系结构和工作流过程管理的模型,给出了工作流实现的类模型,研究了工作流和过程管理的关键技术并给出具体的实现方法.将着色时间Petri网引入到PDM的工作流管理系统中,将基于Petri网的并行式工作流模型应用于PDM系统中,用可达图来分析Petri网工作流模型的静态和动态的结构性能,给出了审批流程的着色时间Petri网模型和流程的变迁过程,在最后的实例中说明了工作流管理的具体实现和工作流的执行过程.

The functions of workflow and process management of PDM system are discussed, and the modules layers of workflow management system are introduced. The class model of workflow management is given, and the architecture of workflow management system and the model of process management are discussed. The key technology and the method to achieve workflow and process management are investigated in detail. Colored timed Petri net is introduced into workflow management of PDM system. The concurrent workflow model built upon Petri net is applied to PDM system. Reachability graph is used to analyze static and dynamic structural performance of workflow model built upon Petri net. Examine and approve workflow model built upon colored timed Petri net and its transition are presented. An application of workflow management system in Harbin Electric Machinery LTD. is presented as a case. The case explains the detailed implement of workflow management system and the execution process of the workflow.