不确定环境下产品设计项目过程执行仿真  

Process execution simulation for product development project under uncertainty

作　　者：张永健[1] 钟诗胜[1] 王体春[2] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [2]南京航空航天大学机电学院,江苏南京210016

出　　处：《计算机集成制造系统》2012年第2期269-275,共7页Computer Integrated Manufacturing Systems

基　　金：国家863计划资助项目(2009AA043404);国家自然科学基金资助项目(60939003);中国博士后科学基金资助项目(20100471337)~~

摘　　要：为了更有效地对不确定环境下的产品设计项目进行仿真和预测,采用拉丁超立方体采样法对不确定工期进行采样,通过细分耦合任务使其转化为依赖任务来降低问题的处理复杂性。在考虑多级返工及返工传播的情况下,建立了基于动态因果图的过程迭代执行模型。基于该模型采用离散事件仿真对项目进行模拟,在使用因果推理对任务返工进行判断及控制的基础上,给出仿真算法的具体步骤。通过算例及分析阐述了仿真的应用。To improve simulation and prediction of product design project under uncertain environment, latin hypercube sampiing was used to sample the uncertain duration of design task. By task segmentation, coupled tasks were decomposed into dependent tasks to reduce problem processing complexity. By considering multi-level rework and rework propagation, iterative process execution model based on dynamic causality diagram was proposed. Discrete event simulation method based on the model was used to conduct project simulation. According to rework decision and control through causal reasoning, concrete algorithm steps were also presented. Simulation analysis and examples were performed to illustrate the application of the algorithm.

关 键 词：产品设计项目 过程仿真 动态因果图 离散事件仿真 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]