基于Web的PDM体系结构及其底层对象管理技术的研究

以敏捷制造及企业间信息共享为目标 ,基于 Inter-net/ Intranet网络环境 ,研究如何开发新一代的 PDM系统并着重介绍了网上 PDM的体系结构及底层数据存储技术管理的对象管理框架的实现原理与开发技术。     

面向制造业的PDM通用信息集成系统

以制造企业中信息集成为目标 ,研究支持设计信息与管理信息及生产信息集成的一般方法与技术。论文首先从企业信息集成的需求出发 ,分析并建立了制造型企业中产品信息模型 ;随后在 CIMS应用集成平台体系结构的基础上 ,设计了一个面向制造业的 PDM通用信息集成系统 ,阐述了系统的设计原则 ;建立了该系统的功能结构并阐述了其功能 ;最后探讨了系统实现的关键技术 ,并给出了系统实现的环境     

产品数据到Web使能数据的转换

制造和市场全球化使企业对基于 Web的 PDM系统的需求日益迫切。传统的设计制造数据不适合作为Internet上的共享数据。传统的产品数据到 Web使能数据的转换成为基于 Web的 PDM系统开发的关键技术之一。文章对产品数据及其相应的 Web使能数据做了分析和讨论 ,并具体给出从 STEP数据到 VRML数据转化的算法思路及对实现中所遇到的特殊情况的分析。最后给出几种 Web使能数据的实例。     

Web-based remote monitoring and fault diagnosis system

This paper proposes an approved Web-based multilayer distributed software architecture solution for remote monitoring and fault diagnosis. To tightly integrate legacy monitor systems, a component framework model based on COM has been proposed, which is very suitable for remote monitoring and fault diagnosis applications. This system has the potential for exchanging a data acquisition system by using wrapper service components. A mixed thick Web client architecture is proposed to implement real-time remote monitoring. A Web-based remote monitoring and fault diagnosis system is developed by using modeling technology, Web application technology, component technology and VME extension for instrumentation (VXI) bus technology, which publishes a fault diagnosis algorithm package, a basic monitoring package and an advanced analysis package on the Internet. This system provides authorized users with an effective and instant way to access new monitoring and diagnosis component packages in time. This paper gives researchers a paradigm to accomplish similar systems. The technique developed may be used for other fields, such as power engineering, manufacture and transportation system.     

应用智能代理的移动机器人网络控制系统

针对互联网的传输特点,提出了机器人远程控制的可行性方案,构建了基于互联网的机器人的远程控制系统。通过对智能代理特点分析、功能及逻辑结构设计,建立了移动机器人网络智能代理系统。利用基于Java的J2EE组件技术实现了网络控制系统及与机器人控制系统的无缝对接。该网络控制系统适于不同的远程用户对机器人的进行控制,系统具有易用性、自主性和平台无关等特点。     

Integration technology of ERP and PDM based on business remote function call

In order to better support ERP system and PDM system integration for independent enterprise network manufacturing systems, the characteristics of ERP and PDM integration are analyzed and the technology of business remote function call is presented. The standards or custom functions which support remote transfer using BRFC interface could be called by ERP and PDM systems. The data gained by ERP and PDM systems can be used to achieve the integration. Not only can a kind of integration model of ERP and PDM be composed, but the RFC interface can be semantically described. The structure, realization and interview of remote function call technology, which are used by ERP and PDM integration, are researched. Also, data exchange of system integration based on data stream direction is discussed to illustrate self-containment, collaboration and recombination of the ERP and PDM systems integration. The conception of a heterogeneous data translator is put forward, and its data structure is given. Interface development tools provided by ERP and PDM are fully considered. The system composing mode is construed clearly. The heterogeneous data translator is applied to realize classic code systems, system information searches of PDM, system information searches of ERP and integration information searches. Then the advantages of BRFC are expounded. The effectiveness and suitability of the BRFC interface integration mechanism is explained and verified. Finally, two application examples are presented to verify the feasibility and efficiency of RFC technology: a typical integration of WLPDM and SAP R/3 ERP in WLNM networked manufacturing platform and a typical integration of Kingdee ERP and HTPDM in Haitian mass customization platform. Thus seamless integration, plain integration, non-repeated data memory, integration flexibility and low cost are realized.     

可配置工艺执行系统关键技术研究

为了实现信息系统的可配置性,针对制造企业的生产执行控制管理,提出了一套可配置工艺执行系统解决方案。该方案采用三层架构的设计方式搭建支持配置的系统框架,用面向对象方法建立可配置的信息模型,采取基于二级组件的动态配置方法对系统业务功能组件进行配置,采用基于角色的访问控制模型配置用户权限,在子系统基础上对数据源进行配置,从而实现了系统的可配置。     

基于J2EE的成套电器企业集成平台框架与应用系统的研究

将成套电器企业模型与J2EE构架相结合,提出了基于J2EE的成套电器企业集成平台的体系结构和层次模型。平台提供统一的全局共享主题数据模型和以项目管理为中心的企业运营工作流程,实现了营销、生产计划、设计、工艺、物流采购、质量检验、仓库、制造和财务等企业职能部门信息和过程的有效集成。在集成平台的基础上,构建了基于Web和组件技术的成套电器企业产品数据管理和企业资源计划业务系统域,并着重研究了这两个业务系统域的应用组件实现的关键技术。作为应用示范,完成了一家成套电器工厂企业信息化系统的实施,使企业的设计能力、交货期、质量、成本和服务水平等综合指标大为提高。     

A Web-based programmable logic controller laboratory for manufacturing engineering education

This study presents the design and development of a Web-based programmable logic controller (PLC) system architecture that supports hands-on laboratory exercises in automated manufacturing systems control area for distance education. The system architecture allows remote users to access and control a PLC-based table-top manufacturing system via the Internet. A Web site has been designed and developed that facilitates interactivity and supports PLC programming and control. The architecture has been tested and implemented in the course Emgt 334 Computer Integrated Manufacturing Systems at the Integrated Systems Facility (ISF) in the Engineering Management Department at the University of Missouri-Rolla during Fall 2001. This study shows that software tools available in the market can be integrated to develop a fairly complex, yet effective, learning environment for distance education. The architecture presented in this paper is not dependent on specific PLC hardware or software configuration, it represents a generic infrastructure. This revised version was published online in October 2004 with a correction to the issue number.     

Web-based distributed manufacturing control systems

With the evolution of the application of web technology, agent-based manufacturing systems can be both easily implemented and become a potential approach for modern manufacturing enterprises. In this paper, we present problems and models required for the development of web-based distributed manufacturing control systems. The specific objectives are: (1) to propose an appropriate architecture for a web-based distributed manufacturing control system, (2) to define the specification of a web-based cell controller, (3) to design the co-operative mechanisms, contract net protocol, for better system performance, (4) to upgrade the communication capability of existing CNC machines from RS232C to TCP/IP (Transmission Control Protocol/Internet Protocol) based on Ethernet .To demonstrate the proposed development, prototype software based on ASP and VB programming was designed and implemented. As a result, not only is a great amount of time saved in the development of web-based manufacturing control software, but this development can also enhance the competitive capability of companies trying to operate on a flexible basis.     

基于Web的PDM系统中文档管理的研究及实现

传统的C/S模式的产品数据管理(PDM)系统已经不能满足异地协同设计和远程信息共享的实际需求,而B/S模式的基于Web的PDM系统使异地之间的信息共享成为可能.通过分析基于Web的PDM系统的文档管理对象及其在Web环境下的数据格式,提出了文档管理模块的4层分布式体系结构,实现了该系统的文档管理模块.     

基于网络的先进制造技术

根据网络技术在现代制造业中的重大影响和作用,论述了基于网络的先进制造技术（network-based advanced manufacturing technology,NAMT)的内涵;提出了一种在计算机网络技术和数据库技术支持下的包括管理和营销、产品设计开发、制造过程和系统集成四大技术群的NAMT的技术内容框架,论述了NAMT的一系列创新功能特点;分析了我国发展NAMT的必要性;提出了我国发展NAMT的几点战略性建议。     

面向敏捷制造的PDM技术研究

讨论了作为21世纪制造企业的战略选择-敏捷制造,分析了敏捷制造的基本原理,以及要实施敏捷制造的关键点.阐述了PDM是实施敏捷制造的关键,分析了PDM的发展现状,在敏捷制造中的功能需求,以及在实现敏捷制造的过程中所要解决的关键性技术-基于CORBA标准的系统集成、数据库以及网络技术.     

产品数据管理技术的现状与发展

产品数据管理（ＰＤＭ）技术由于具有帮助企业管理与控制企业数据并缩短产品上市时间的强大功能而受到国外大中型制造企业的广泛重视，它可提供现代企业信息管理所必需的数据管理、配置管理与过程管理等工具，因而在ＣＩＭＳ、并行工程等先进制造系统中得到广泛应用。本文重点阐述了ＰＤＭ技术的产生背景、基本概念、体系结构、主要功能、应用领域和主要供应商等内容，研究了利用ＰＤＭ技术帮助企业可解决的相关问题和实现方法，并指出了应用与实施中应注意的几个主要问题     

产品数据管理技术的最新进展综述

针对产品数据管理（PDM）系统的最新发展技术,基于PDM系统软件功能分析,研究了分布式多层体系结构、虚拟产品开发管理（VPDM）和新一代的产品开发管理系统（PDMII）技术、CORBA和Web技术、企业级PDM系统技术及Internet／Intranet技术,建立了Internet／Intranet／Extranet之上的统一的产品数据模型,提供了企业产品开发电子商务解决方案,实现了应用工具与底层数据环境的系统集成和系统的无缝连接。研究结果表明,PDM技术增强了企业对象的安全性、高效性和重复使用性,降低了企业成本且缩短了产品开发周期,企业级PDM系统技术具有更高级的过程管理、更大范围的数据共享和更复杂的产品配置管理功能,采用CORBA和web技术有利于PDM系统的集成和扩展。     

组件化和集成化车间生产管理系统的研究与实现

在对车间生产管理调查研究的基础上，整合、优化了车间生产管理的业务流程；分析了车间生产管理的功能划分；讨论了车间生产管理的内部集成和外部集成；采用组件化的软件开发方法，给出了车间生产管理的组件层次结构；讨论了大粒度组件的划分及重用实现。所开发的车间生产管理系统已在7家企业投入应用，效果显著，说明车间生产管理整体方案能满足企业的个性化需求，具有可行性和可重构性。     

支持动态集成的产品数据管理Web服务架构

基于产品模型数据交换标准的异构CAx和产品数据管理系统间的动态集成是网络化制造亟待解决的问题。分析了Web服务访问的产品模型数据交换标准数据的必要性和可能性,利用统一建模语言间接构建了产品模型数据交换标准和统一建模语言图解之间的映射关系。提出了基于产品模型数据交换标准的开放式产品数据管理网络服务架构,并将其应用于CAx和产品数据管理系统的集成方案。分析了架构的内部结构及功能模块,以计算机辅助设计系统为例,阐述了其利用简单对象访问协议消息调用公共产品数据管理网络方法的信息流程。基于产品数据交换标准和面向服务架构的方法,开发了接口功能模块,为系统集成的实施奠定了基础。     

Developing an Integration Framework to Support the Information Flow Between PDM and MRP

Integrating various kinds of business application has attracted much attention in the business to business (B2B) market. The integration of the production planning functions and engineering design functions is an important area which has been addressed recently by some major enterprises. This paper proposes a methodology to support the integration of information flow between the applications of product data management (PDM) and manufacturing resource planning (MRP). A three-level structure including model development, model analysis, and system implementation was developed. An approach applying the concepts of semantic similarity to find the "common" objects used in different business applications was also proposed. These objects were used as a buffer for the information integration. In addition, a set of business rules was developed to govern the information flow between PDM and MRP. The proposed methodology has been implemented by integrating two commercial PDM and MRP software modules.     

PDM中基于工作流的电子仓库和文档管理

产品数据管理的各功能模块都与文档管理密切相关，因此文档管理模块是产品数据管理的基础模块。系统采用J2EE平台技术，构建了该产品数据管理系统的三层体系结构。论文首先讨论了文档管理与电子仓库的关系，介绍了工作流程中文档从生成到归档的全过程，构建了文档管理的状态图和文档操作的功能模型，从而说明了文档管理动态描述产品设计的过程。其次论述了文档版本管理的实现，建立了文档版本管理的流程图。最后给出了产品数据管理的文档管理系统的一个实际应用案例。     

基于Web的PDM系统中安全服务的研究

PDM系统是管理现代企业产品数据的一种新的思想和技术,在信息技术和网络化制造技术的发展的驱动下,PDM的思想内涵和外延不断扩大,体系结构也转向基于Web的分布式多层结构。构建于Internet的开放的网络环境上的PDM系统无疑面临着更严峻的安全考验。本文探讨了网络环境下为动态联盟等虚拟企业提供产品信息管理功能的PDM系统的安全问题。分析了国内外PDM系统安全服务的不足之处后,提出了具体的安全需求。详细介绍了Internet环境下增强的PDM安全服务构架,强调了适用于虚拟企业联盟的PDM系统的身份认证和访问控制技术的具体实现方案。