【作者】 戴昌武；

【导师】 冯平法；

【作者基本信息】 清华大学 ， 机械工程， 2004， 硕士

【摘要】 激烈的市场竞争和用户对产品不断提高的个性化需求使得产品更新越来越快,这就对企业产品开发提出了更高的要求。在有限资源(设备、人员)条件下,如何在单位时间内开发出更多低成本高质量产品是企业提高竞争力的关键。为此,企业必须引入新的管理思想和技术,实现多产品并行开发。目前,对多产品并行开发过程MPCDP(Multi-Product Concurrent Development Process)尚缺乏系统研究。本文在理论上将多产品并行开发过程描述为多个层面上的多过程问题,给出了对MPCDP的较为完整、统一的多视图模型描述;然后在各个层次上深入研究了解决多过程问题的相关理论和方法;最后给出多过程问题在PDM中的解决方案及具体工程实施实例。论文工作具体在以下几个方面展开:1.MPCDP中多过程问题的多视图模型描述。首先分析了MPCDP中多过程问题的层次关系,然后在任意一个层次上,抽取出对该层次上多过程问题全面的视图表述;在此基础上,形成对MPCDP中多过程问题的统一的二维表述模型。更进一步,探讨了多视图之间的关系模型,即以过程视图为核心,其它四个视图(组织、资源、功能、信息视图)为辅助的、相互之间映射与引用的关系模型。2.多产品开发任务调度问题的描述及简化实现。建立了完整的多产品开发任务调度问题的数学表达,并分析了该调度问题的复杂性,探讨了其可行的简化解决方法:基于交货期算法的任务优先级调度、考虑人员工作效率的“任务/人员”优化分配调度、以人员为主动的动态任务均衡调度。3.产品并行开发过程建模及实现。建立了产品并行开发过程的集成多视图模型;探讨了产品开发过程上下游阶段之间的触发时间T0模型;在更细层次上探讨了产品开发过程中某一个阶段(某一个过程)内的多步骤并行性及其在PDM中的实现方法。4.论文最后给出了上述多过程建模指导下的PDM系统工程实施实例。通过项目管理实现多产品并行开发,结合并行工程思想,在PDM集<WP=4>成平台上实现产品的并行开发过程,通过工作流程管理实现过程中的多步骤并行,从而解决MPCDP中多过程问题。本论文工作是在西北轴承股份有限责任公司PDM系统实施项目支持下进行和完成的。更多还原

【Abstract】 With the worldwide competition and the continuous improvement of customers’ individuation requirement, the product updating speed becomes so fast that enterprises badly need to improve their product development ability. How to develop more low-cost and high-quality products with the limited resources (equipments, human resources, etc), in the same work period, is the key to enhance enterprises’ competence. Therefore, it is not only necessary for enterprises to import new management concept and technique but alse to reform the product development process in order to realize the multi-product development concurrently.Presently, there is lack of systematic support on the Multi-Product Concurrent Development Process (MPCDP). Firstly, the MPCDP is described into multi-process issue on three levels in this paper. Secondly, its integrated and uniform multi-view model is presented. Thirdly, the relevant theory and method of multi-process issue are presented in detail on every level. Finally, the multi-process issue’s engineering realization with the Product Data Management (PDM) is introduced. The following aspects are involved in the paper:1.The two-dimension model of multi-process issue in the MPCDPThe level-relation of multi-process issue in the MPCDP is firstly analyzed. Then, on every level, the all-sided views expression of multi-process issue is abstracted. Furthermore, the uniform two-dimension expressing model for the three levels’ multi-process issue is formed. Finally, the relation model among views is discussed. This model contains the process view, the structure view, the resource view, the information view, and the function view.2.The tasks scheduling in the multi-product developmentThe complexity of the tasks scheduling is analyzed along with establishment of the comprehensive mathematics express of the tasks <WP=6>scheduling in the multi-product development. Relevant feasible and simplified methods are discussed, including the tasks prior scheduling based on due-time arithmetic, the ‘task-personnel’ optimal assignment scheduling based on personnel work efficiency, and the personnel-actively dynamic tasks balancing strategy.3.The modeling of product concurrent development processThe multi-view integrated model of the product concurrent development process is established. The trigger time T0 model between upstream and downstream phases in the product development is discussed. Furthermore, the workflow on the phase level in the product development process is discussed.4.The implementation and application case of a PDM systemAn implementation and application case is presented, which is guided by the above relevant methods of multi-process modeling.The research is based on the project of “Application of XIBEI bearing Product Data Management system”.更多还原