产品数据管理策略

主要介绍上海燃料电池汽车动力系统有限公司（以下简称上燃动力）实施PDM（产品数据管理）的过程。由于上燃动力以国家863燃料电池轿车项目作为核心业务,具有人力资源多样化、产品数据不断变化等特点,因此在实施PDM的过程中,以产品数据为核心,重点考虑用户与数据安全管理、数据版本管理、数据更改、审批与发布管理等问题,并已取得了良好效果。     

产品数据管理中的设计信息管理

设计信息管理是产品数据管理系统（ＰＤＭ）中的一个重要环节。本文给出了设计系统中设计信息管理的具体数据流程和设计方法,将设计过程与管理过程有效地联成一体,并将算法应用到商品化软件ＩｎｔｅＣＡＤＶ５．０中。     

产品设计质量数据与管理模型研究

针对产品设计阶段有效管理质量数据的迫切需求,提出了基于质量特性的产品设计质量数据管理模型。依据产品设计过程确立了产品设计质量特性与数据的定义,在分析产品设计质量保证过程和产品质量特性多维性及演化性特点的基础上,给出了产品设计质量数据与产品质量特性的映射关系和视图,分析了产品设计质量数据的结构、特点及管理需求,提出了基于质量特性的满足产品数据管理和流程管理规范的产品设计质量数据管理模型。通过开发现代产品设计质量保证与数据管理平台原型系统和典型机械产品研制过程的质量数据管理应用,验证了该模型的正确性。     

产品数据管理系统中权限控制的研究与实现

为了实现产品数据管理系统中的权限管理功能,提高系统运行时的权限查询和权限控制的效率,按照产品数据管理系统的功能模块组织权限管理,建立了角色的访问控制模型。通过面向类的访问控制集和面向对象的访问控制集,实现了用户权限的存取控制。分析了产品数据管理类的继承方法和类操作的分配方式,实现了产品数据管理类子类的创建和操作权限的继承。通过分析操作之间的约束关系,进行了类操作和角色之间的约束管理,给出了权限授予规则和权限控制规则。该权限设置方式简洁、规范,提高了产品数据管理系统的运行效率,简化了产品数据管理中权限管理的二次开发。     

Web平台上的起重机产品数据管理研究

随着中国经济以及科学技术的发展,中国制造、建筑以及运输等行业迅速发展起来,起重机械在其中发挥了巨大的作用.如何建立一个起重机制造企业间的PDM合作平台,如何通过PDM,使企业之间的合作变得更加便捷和安全是一个值得研究的问题.首先对Web化起重机PDM的背景进行了阐述,提出一个基于Web的PDM的系统框架,对该框架各层进行详细介绍,对Web的PDM的基本功能和优缺点进行讨论.     

A component-based product data management system

Companies today have been attempting to expand their Internet infrastructures to cope with the growth of global business environments. In modern manufacturing industries, they are migrating their legacy product data management (PDM) systems to Web-based systems (being an essential tool of eManufacturing) to use the Internet. Accordingly, recent advances in PDM technology have dealt with the use of Web-based technology. Some research and development on Web-based PDM systems has been described in the literature, but those efforts have technical limits. They are not adequately available, secure, reliable, and scalable for global enterprise services. This paper describes the design of a component-based product data management (CPDM) system for supporting global manufacturing. The CPDM system is aimed at assuring flexibility, security, stability, and maintainability by utilizing a standard architecture of J2EE technology. The CPDM system consists of three tiers based on the J2EE architecture. The first is the presentation tier implemented as JSP/servlet components to allow users to access the system through a Web browser. The second is the business logic tier, which is implemented as Enterprise JavaBeans (EJB) components to handle the core PDM functionality. The third level is the data tier, composed of a database and vault for the physical files. To develop the components of the CPDM system, a component-based development (CBD) approach is proposed. The associated component development procedure is illustrated with examples. The CPDM system is also tested for its performance.     

An ontology-based product design framework for manufacturability verification and knowledge reuse

To achieve efficient development of high-quality product, manufacturing constraints must be fully taken into account at the early design stage. However, designers lack in-depth knowledge of manufacturing and production. Many time-consuming iterations of design changes are required between designers and manufacturing engineers. In order to minimize this knowledge gap, this paper presents an ontology-based product design framework for manufacturability verification and knowledge reuse to support the sharing and reuse of design and manufacturing knowledge. It aims at providing advices and feedback of restraints of manufacturing processes to the designers during the design process. The proposed framework consists of three major layers which include a foundation layer, a domain layer, and an instance layer. We use the Web Ontology Language (OWL), a standard of ontology representation language, to formalize the foundation layer. It contains the core product model and the standard ISO 10303 AP224 application protocol. The domain layer comprises extensional concepts and relationships for design and manufacturing integration and a rule base for manufacturability verification, which is represented in Semantic Web Rule Language (SWRL). In the instance layer, an inference engine is developed based on ontology and rule inference. It provides recommendations of manufacturability. Two case studies are provided as application examples to demonstrate the effectiveness of the framework.     

产品设计过程中数据与过程的动态管理

根据产品设计过程的实际特点,提出一个数据一过程互动模型(DPIM,data and process interplayed model),该模型能有效地描述产品数据和设计过程问的动态交互行为。基于该动态模型,设计过程的描述和执行能适应设计数据的动态变化,而产品数据伴随着设计过程的进行不断丰富和完善,从而使得数据和过程的管理能紧密地集成在一起。由于设计数据的变化和过程的定义及执行是以互动的方式交织进行的,该模型能较好地描述产品设计过程的动态性。     

Change and delay [product data management]

The author explains how product data management software offers the key to making engineering changes quickly and efficiently     

基于PDM的项目管理研究

项目管理在现代企业工程中占有重要地位。项目可分解为子项目，子项目又可分解为一系列相关的任务，这些任务可以借助产品数据管理(PDM)中的工作流机制自动实现。项目管理就是保证各项任务按照项目进度顺利实现。这里分析了项目管理和过程管理集成的层次，对项目管理的内容做了初步探讨，并提供一个基于BITPDM项目管理的案例。     

CAD产品数据管理应用研究

以经纬纺机股份有限公司为背景,讨论了实施ＰＤＭ的必要性和紧迫性,提出了一个真实场地的解决方案,这是推广ＣＡＤ技术所面临的共同课题。     

面向过程的产品数据生命周期管理

借鉴统一建模语言(UML)描述类对象生命周期的方法,基于对产品数据对象的生命周期分析,引出了生命周期状态机的概念,提出了面向过程的产品数据生命周期管理策略,最后,建立了面向过程的产品数据生命周期管理模型,并对其进行了详细分析。     

阀门企业的产品数据管理方案研究

针对阀门企业的现状，提出了基于产品数据管理技术对企业产品数据进行管理的解决方案。并对其当前的一些具体分工和要解决的重点问题进行了探讨，同时对该技术的投资和回报进行了分析。     

面向过程的复杂产品制造数据管理

以过程为中心组织制造数据有助于从整体上实现制造数据的关联管理,通过对复杂产品制造数据管理需求的分析,提出面向过程的制造数据管理模式,将产品结构数据、质量数据和资源数据统一在一个模型中,给出了面向过程的制造数据模型,最后基于该模型构建了包含数据转换层、管理层和网络服务层三个层次的面向过程的制造数据管理平台。     

CIMS环境下陶瓷产品数据管理系统的开发与应用

陶瓷是一种宽公差,复杂曲面的产品,产品设计与制造的技术参数繁多。本文在分析了陶瓷产品设计流程的基础上,提出了陶瓷产品的数据管理的系统框架及其实现方法,开发陶瓷产品数据管理系统。     

基于上下文的适应性产品数据管理模型及应用

针对复杂工程产品数据管理系统中模型缺乏运行时增量式动态定义与扩展及对过程知识支持较弱等问题,研究了复杂工程产品数据管理模型的构建,提出了基于上下文的适应性产品数据管理模型。给出了模型基本概念及其形式化定义,建立了以全局结构树为主线的数据组织方式,并给出了数据在不同上下文间的演化机制及中性信息的定义。讨论了模型到层次对象Petri网的过程映射,给出了模型集成框架。通过在某企业中的应用,验证了所提模型的有效性。     

Preparing for PDM [product data management]

The symptoms of poor product data management (PDM), data visibility, accessibility and reliability, are evident in many engineering environments. Data discipline has been lost in the proliferation of computer-based tools in a fragmented product development lifecycle. In this paper the authors try to isolate the golden rules of PDM. Process management and product structure management procedures have been identified. By embodying these, one can bring discipline to the management of product data. In application, implementation of `success' is limited by the ability of the technology. A balance is necessary between enablers and business requirements that may demand functionality beyond the cost effective operational parameters of the technology. Technology solutions must be driven by business needs, where the functionality and features of any particular solution are in line with the objectives of the implementation     

The power of PDM [product data management]

Most major engineering organisations have embarked on the use of (product data management) PDM to manage the electronic data generated by modern CADCAM systems. The author reports on the growing pressure to implement PDM in the lower tiers of the supply chain and in smaller companies     

The point of PDM [product data management]

Manufacturing industry's success in reforming itself has exposed an underlying factor limiting further significant gains in competitive performance; the effective management of product data. The growth of computer-based systems has led to the existence of a large amount of product definition data, stored in various locations and formats. To achieve the proper management of these data, product data management (PDM) has evolved. The authors discuss the aims and benefits of PDM     

面向印染企业的产品数据管理系统研究

针对我国印染企业信息化建设相对落后的现状,设计开发了某印染企业产品数据管理系统。在对企业进行详细需求分析的基础上,完成了基于B/S结构和MVC设计模式的4层体系结构设计,根据印染企业的生产、管理的特点,给出了系统的总体设计方案,并描述了各模块的主要功能。该系统目前已投入运行,结果表明,该印染企业员工之间的协作得到加强,资源周转加快,企业产品数据采集更加迅速准确,有助于管理层科学决策,系统应用后达到提高生产效率和有效管理的目的。