复杂产品的并行变更传播模型研究

发布时间：2018-10-29 16:24

【摘要】：在产品开发过程中,许多原因会导致产品设计变更,比如新的客户需求、技术创新、设计缺陷。设计变更的出现会产生传播,继而导致一系列的连锁反应。便会对产品的设计价格、时间、质量等等产生不确定性,故需要对产品设计变更的传播进行预测和控制。本文针对过去设计变更传播模型按顺序先后处理功能、结构、制造变更效率上的不足,提出了并行变更传播的设计思想,将产品设计过程中的变更进行了并行处理,以时间作为判据来搜索最短的变更传播路线。懫用交集与子集的逻辑分析方法分析并行处理过程,并用并行度来选择并行传播最短的路线。最后分析处理资源受限下的变更任务。全文共分为六章。第一章简要介绍工程变更的定义、工程变更处理流程等等,总结当前国内外工程变更研究现状,提出了本课题的研究目的和意义;第二章对设计结构矩阵的发展历程、模型分类以及其特征进行了简要的论述,并确定基于零件的设计结构矩阵建模方法;第三章建立了并行变更传播的模型,为设计者节约更多时间,实现产品的敏捷设计,为了计算并行处理的总时间,提出了并行度的概念,通过基于时间的搜索变更传播路径算法来得到所有的变更传播路径,以实现最短变更传播处理路径的寻找;第四章将基于时间判据的并行变更传播模型应用于具体案例,通过将复杂产品设计过程中的功能、结构、制造有机的联系起来,用并行度的概念选择总时间最大的并行传播路线,结合交集/子集得到并行传播最短的处理总时间;第五章处理资源受限下的工程变更传播,简要介绍关键路径法和节点式有限网络图的基本概念,采用节点式有限网络图分析资源受限而导致的任务延迟时间;第六章作为本文的结尾,对整篇文章进行了总结,并提出了研究的工作展望。
[Abstract]:In the process of product development, many reasons will lead to product design changes, such as new customer requirements, technical innovation, design defects. The appearance of design changes can spread and lead to a series of chain reactions. Therefore, it is necessary to predict and control the spread of product design changes. In order to deal with the problems of function, structure and manufacturing change efficiency in the past design change propagation model, this paper puts forward the design idea of parallel change propagation, and processes the change in the process of product design in parallel. Time is used as a criterion to search for the shortest path of change propagation. The parallel processing process is analyzed by using the logic analysis method of intersection and subset, and the shortest path of parallel propagation is chosen by using the degree of parallelism. Finally, the task of dealing with resource constraints is analyzed. The full text is divided into six chapters. The first chapter briefly introduces the definition of engineering change, the process of engineering change and so on, summarizes the current research situation of engineering change at home and abroad, and puts forward the research purpose and significance of this topic. In the second chapter, the development of design structure matrix, the classification of model and its characteristics are briefly discussed, and the modeling method of design structure matrix based on parts is determined. In chapter 3, the model of parallel change propagation is established, which saves more time for designers and realizes agile design of products. In order to calculate the total time of parallel processing, the concept of parallelism is put forward. All the change propagation paths are obtained by searching the change propagation path algorithm based on time, so as to find the shortest change propagation path. In chapter 4, the parallel change propagation model based on time criterion is applied to a concrete case, and the function, structure and manufacture of complex product design are connected organically. The concept of parallelism degree is used to select the parallel propagation route with the largest total time, and the shortest processing time of parallel propagation is obtained by combining the intersection / subset. Chapter 5 deals with the propagation of engineering change under resource constraints, introduces the key path method and the basic concepts of node finite network diagram, and analyzes the task delay time caused by resource limitation by using node limited network graph. The sixth chapter is the end of this paper, the whole article is summarized, and the research prospect is put forward.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB472

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