面向MTM的服装企业PLM系统研究

针对大规模定制生产模式下服装企业MTM订单无法实时处理、生产效率低、产品不能很好的符合客户需求等问题,分析了MTM、PLM的基本思想和方法及MTM生产模式对PLM系统的要求,根据某服装企业实际应用产品全生命周期管理系统的实际过程,对如何在MTM生产模式下运用PLM技术进行了研究。实践表明,应用此系统后使该服装企业缩短了服装产品制造周期,降低了生产成本,加快了产品交货时间,提高了企业的生产效率。     

Research on static service BOM transformation for complex products

With the trend toward servitization and the development of big data, host manufacturers of complex products are exploring methods to effectively organize product data for providing satisfactory maintenance, repair and overhaul (MRO) service. With the motivation, this research develops a service bill-of-material (SBOM) from a product life cycle perspective. We propose a generic-SBOM (G-SBOM) to manage common information of one product type or batched products and an individual-SBOM (I-SBOM) to administrate instance products, together constituting a static SBOM. The transformation processes from engineering BOM, manufacturing resume and purchased part information to SBOM are explained in detail and described in a mathematical model. The compound SBOM reduces data redundancy and meets the basic requirements of MRO service, such as position management and alternative parts management. At the same time, its formation process reflects product lifecycle data integration for complex products. Finally, this method is verified by a product example and realized in a prototype XBOM system for a high-speed train manufacturer enterprise in China.     

基于PLM的产品维修性设计分析管理解决方案

探讨了维修性设计分析的信息需求,建立了维修性设计分析的ER模型,在此基础上重点讨论了PLM平台下开展维修性设计分析活动的解决方案,主要包括四个方面:在PLM平台下配置维修性设计分析环境;建立基于产品结构树的维修性信息主模型;维修性设计分析工具与PLM平台的集成;基于PLM项目协同和工作流对维修性设计分析流程进行管理和控制.最后选取典型的PLM平台Teamcenter系统,以某型舰炮研制阶段的维修性设计分析活动为例进行了应用研究.     

Application of power law model in reliability evaluation of machine tools by considering working condition difference

The influence of working condition difference has not been considered in the traditional reliability modeling of numerical control (NC) machine tools. To solve the problem, a reliability evaluation method based on mixture variable parameter power law model (MVPPLM) is proposed in this study. First, the scale parameter of the PLM is obtained by multi‐dimensional exponential distribution. Second, a proportional relation of failure rate function between each working condition and reference working condition is established. The proportion coefficient is solved using the partial likelihood function. Working condition factors with a significant influence on reliability levels are selected through the chi‐squared test. Third, reliability evaluation models under different working condition levels are established through mixture distributions. The mixture weight coefficient is calculated by the standard deviation of working condition covariates. The maximum likelihood estimation method is used to estimate parameters. Finally, results of a case analysis based on the data of NC machine tools in the user field tracing test show that the MVPPLM has higher precision than the traditional method. Therefore, reliability evaluation that considers working condition difference is valuable for engineering application.     

产品生命周期管理的内涵和技术架构

以新产品的全生命周期过程的动态演进特征和内在联系为研究对象，基于产品生命周期管理的内涵、需求特征、新产品开发V型流程的功能分布、相关支撑技术、应用集成平台和J2EE的软件，介绍了一种PLM的总体解决方案、软件系统开发和应用实例。     

面向PLM的产品数据管理技术及其工具分析

通过系统分析面向PLM的PDM技术以及相关的PDM工具,指出了PDM技术在PLM战略背景下的演化过程,并总结了PDM技术的发展趋势。对于PDM技术的研究以及PDM系统的实施具有指导意义。     

绿色制造模式下的PLM及其关键技术研究

PLM(产品全生命周期管理)系统是制造业信息化的发展趋势,是制造业中增长最快的IT应用系统.绿色制造是人们为了协调制造业发展和人类生存环境之间的关系,而提出的先进制造模式.作者针对它们各自的优势和特点,用系统化、集成化的方法,探讨了绿色制造模式下的PLM系统的实施体系模型及其关键技术.     

产品生命周期管理(PLM)技术研究

产品生命周期管理(PLM——Product Life Management)技术是一种新的电子商务解决方案,本文阐述了其体系结构和功能,认为在软件开发设计的过程中应该充分应用目前被人们推崇的软件重用技术,采用构件的思想,以提高产品开发的整体效率,保证开发品质,提高软件应用中的稳定性,易维护性。     

基于PLM的任务管理模型研究

任务管理是PLM系统中实现项目管理和流程控制的重要机制,通过分析基于产品结构的任务管理模型的缺点与不足,根据任务管理的目标和一般过程,提出了一种以任务为中心的任务管理模型,并结合TeamcenterEnterprise4.0,给出了企业任务分配流程的实例。