基于主模型CAD/CAE集成的卷绕锭轴结构参数优化

高速卷绕头是化纤长丝纺丝机的重要单元机,国内之前研究相对较少。采用虚拟产品开发技术进行高速卷绕头新产品开发的技术创新,提高卷绕头产品开发效率。与同类研究类似,在高速卷绕头产品的虚拟开发过程中,集成CAD/CAE系统存在若干技术瓶颈。基于CAD/CAE系统集成方法的对比分析,建立了主模型CAD/CAE集成框架,并在该框架下进行了高速卷绕头锭轴结构参数优化设计,其优化设计的动力性能分析结果验证了基于主模型CAD/CAE集成框架进行高速卷绕锭轴部件虚拟开发的有效性。

Abstract：

Researches based on the high speed winder, which is a key unit machine for filaments treatment, are relatively rare in China. The techniques of virtual product development （VPD） were applied to improve the new product development of the high speed winder, which would raise the product development efficiency of the high speed winder. Similarly to the research of this kind, in the procedure of developing the virtual product for the high speed winder, there were several key technical problems in the CAD/CAE integrated system. The contrast analysis of the CAD/CAE integrated methods was given; furthermore, the CAD/CAE integrated framework based on master model was built, in which the structural parameters of the high-speed winder chuck was optimized for design. The dynamic characteristics analysis for the optimization design was done; consequently, the result indicates that in the CAD/CAE integrated framework based on master model, the structural parameter optimization of high-speed winder chuck is available.     

A Modeling and Decision Making Based on Evolution

1　ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｒｅａｒｅｍａｎｙｄｉｆｆｉｃｕｌｔｉｅｓｉｎｑｕａｎｔｉｔａｔｉｖｅｒｅｓｅａｒｃｈｆｏｒｓｕｓｔａｉｎａｂｌｅｄｅｖｅｌｏｐｍｅｎｔｓｙｓｔｅｍ .Ｓｕｓ ｔａｉｎａｂｌｅｄｅｖｅｌｏｐｍｅｎｔｓｙｓｔｅｍｃｏｎｓｉｓｔｓｏｆａｎｕｍｂｅｒｏｆｓｕｂｓｙｓｔｅｍｓｔｈａｔａｒｅｉｎｔｅｒａｃｔｉｖｅｅａｃｈｏｔｈｅｒ ,ｗｈｉｃｈｉｓｎｏｎｌｉｎｅａｒａｎｄｌｏｎｇ ｔｅｒｍ .Ｉｔｓｏｂｊｅｃｔｓａｎｄｃｏｎｄｉｔｉｏｎｓａｒｅｅｎｔａｎｇｌｅｍｅｎｔｗｉｔｈｍａ…     

Optimizing Concurrent Product Development Process Using Genetic Algorithm

0　IntroductionTimesaving,timetomarketandcycletimereductionarethenewgoalsandaimsforenterprisesinordertosuccessfullycompeteintothemodernglobalmarket[1].Thereisnodoubtthatconcurrentconsiderationofproductandprocessdesignimprovesproductqualityandreducesthere-designwork,whichleadstoshorterproductlead-time.Buttheconcurrentdevelopmentfashionbringsaboutmoreobstaclessuchascomplextimeorder,informationandresourceconstrainednatureofrelationshipsbetweenactivitiestothedesignprocess,whichleadtothefactthatiti…     

上海电子金融发展战略目标分析

面对网络经济与互联网的飞速发展,金融作为高度信息化的产业,对信息和信息科学有着密切的依赖关系。阐述了电子金融的基本概念;对上海国际金融中心建设的目标、途径和发展现状进行了分析,指出发展电子金融是上海国际金融中心发展的重要途径。最后在分析了上海电子金融发展相关因素的基础上,提出了上海电子金融发展的战略和战略目标。     

信息系统开发的并行工程方法

叙述了并行工程的概念和特点 ,并且将并行工程的原理应用于信息系统开发过程 ,提出了信息系统开发的生命周期、信息系统开发的上游工程和下游工程等概念 ,并以一具体开发实例说明这种方法的优点 .     

连续变化条件下的态势感知速度模型

为了定量地度量C4ISR系统的态势感知能力,基于Endsley的态势感知模型,分析了从察觉信息到理解信息的态势感知过程。提出了态势理解过程的三个基础经验假设,定义了随时间变化的态势差异度量。推导出反映态势变化与感知速度之间关系的微分方程,提出了态势感知能力参数的改进方法。对微分方程解的讨论,得到了与现实经验相符的结论。     

Consumer Participation in Designing Community Based Consumer-Directed Disability Care: Lessons from a Participatory Action Research-Inspired Project

User participation has been embraced worldwide as a means to provide better consumer outcomes in health and community care. However, methodologies to achieve effective consumer engagement at the programme design level have remained under-explored. The purpose of this study was to evaluate the impact of a Participatory Action Research (PAR)-inspired methodology used to develop a consumer-directed community care/individualised funding service model for people with disabilities. A retrospective analysis of case notes and internal reports for the first 6 years of an ongoing project were examined. The findings suggest that PAR methodologies need to take into account community development, group support, and capacity building as well as succession planning and risk management issues in order to facilitate the often lengthy policy and project development process. Drawing on these findings, this article discusses five lessons and their methodological implications for PAR in a health or social policy/programme design context.

复杂产品开发过程仿真与预测研究

为了更有效的对复杂产品开发过程进行预测分析,提出一种两层设计结构矩阵模型作为仿真的结构关系模型.建立了服从三角分布的时间与成本模型,采用拉丁超立方抽样法对该模型进行抽样并生成样本点.采用任务返工概率、返工影响与学习效应曲线来描述开发过程的迭代特征,对任务返工概率的变化调整、返工需求判断策略、多任务返工执行约束等问题给出了相应的仿真模拟方法.在此基础上提出了改进的产品开发过程仿真算法,并设计开发了基于Matlab的复杂产品开发过程仿真平台.最后,通过一个实例证明了该仿真平台的有效性和实用性.     

研发项目产品与流程架构的跨领域集成与优化

为揭示复杂产品开发项目中部件间的依赖关系对活动的影响,本文采用多领域矩阵（MDM）分析产品与流程架构之间的依赖关系,并对研发项目中的产品架构与流程架构进行集成及其优化. 首先,依据产品设计结构矩阵（DSM）中部件间的依赖度及部件与活动之间的耦合关系,本文提出了由产品DSM建立流程DSM的方法,构建了由部件依赖度测度活动之间依赖度的量化模型. 其次,提出了基于依赖度平均增量的产品DSM聚类方法,因此,由MDM推导的流程DSM形成若干的活动组,降低了管理的复杂性. 最后,结合典型案例,在产品DSM聚类的基础上,对初始的流程DSM以最小化项目总协调成本进行排序优化,并对优化结果进行仿真,结果表明本文提出的方法可降低项目时间和成本.     

可再生资源可持续发展的动力学模型分析

以《资源—经济可持续发展的最优经济发展模型》中模型的动态方程为基础,重点研究资源的恢复性投资对可再生资源的可持续利用的影响,应用非线性动力学方法研究了系统正不动点的存在性、局部稳定性,然后用数值模拟的方法验证了正不动点的局部稳定性,最后应用全局分析方法给出了维持资源可再生能力的当前资源存量范围(可行吸引域)。