制造业企业协同平台深入应用研究

由于企业应用存在多套信息系统之间的信息割裂问题,致使操作人员在繁多的系统功能中寻找与自己相关的极少内容。针对一直普遍现象,制造企业协同平台应具备协同办公的基本功能以外,还要解决跨平台业务流与数据流整合问题,并深入展示领导层需要的决策信息及定制开发其业务信息门户。     

企业数据集成模式的研究

企业管理信息化,就是在企业管理的各个环节和各个方面,通过利用计算机和网络技术来实现物流、资金流、信息流和工作流的集成和综合。它导致了企业应用集成(EAI)的发展,企业数据集成是现有企业应用集成解决方案中最普遍的一个形式。文章主要对企业数据集成模式做一些探讨和研究,并给出了应用案例。     

Development of an Architecture for a Hybrid Manufacturing Information System

In a previous paper, the concept of a Generic Non Standard-specific Information Flow System (GNSIFS) was discussed [1]. The main feature of GNSIFS is that it can perform data exchange among a group of manufacturing systems, regardless of the operating systems or standards being used. Further research in this field shows that, to enhance the capability of GNSIFS, the database system of GNSIFS, which is considered to be the key constituent of the whole system, should consist of a relational data model that is to be complemented with a free format data model. In addition, the ‘reasoning’ capability of this information flow system can also be advanced if a Rule Knowledge DataBase (RKDB), together with the associated inference engine, can be included in the GNSIFS, resulting in the formation of a Hybrid Manufacturing Information System (HMIS) which manages the information flow from a combination of relational, free format and rule knowledge data models. This hybrid information management feature is favourable to the progressive advancement of the ‘reasoning’ nature of the system, and at the same time, has the benefit of relational data processing. This paper describes the architecture required for the formation of this Hybrid Manufacturing Information System (HMIS), and tests this system in a real company to evaluate its viability in an industrial environment.     

Reasoning about ER models in a deductive environment

In this paper we present an approach to represent schema information, application data and integrity constraints as a logic program in form of Datalog. The schema information is supplied as an enhanced entity relationship (EER) model which is transformed by a one-to-one mapping into a set of ground facts. The application data corresponding to the schema is also represented by ground facts in a single table. In order to check whether the application data conforms to the given schema, generic functional and inclusion dependencies are introduced, which can be mapped into concrete dependencies using the schema information. The concrete dependencies are used for checking the consistency between application data and the schema. The formulation of the constraints based on functional and inclusion dependencies led to a small extension of the EER model by allowing identifying attributes in relationship types. This extension leads to both simpler constraints and simpler EER application models.Furthermore, we provide a meta EER model which can be used to check whether the application EER model is a structural valid EER model. Any application EER diagram is an instance of the meta EER diagram which can be specified using the proposed application data representation. The same integrity rules can be used to check the conformance between the application data and the application EER diagram, the meta EER diagram and the application EER diagram, and finally it can be used to check the meta EER model itself.     

An object-oriented bill of materials system for dynamic product management

In this paper, the bill of materials (BOM) system is defined as the central hub of a general product data management (PDM) system that provides essential data for running a manufacturing system to produce products. Information that is relevant to products and their components is defined in the BOM. The information is critically related to data from product design, manufacturing planning, production management, procurement, inventory control, and accounting within a company. A conventional BOM structure (or product configuration), which manages data only in a stand-alone relational database management style, cannot satisfy the needs requested by all departments within a company. A BOM should relate to and communicate with other domains of the information system. In this research, a newly designed BOM system uses the object-oriented programming (OOP) concept to represent product information. The object-oriented BOM (OOBOM) system can capture and encapsulate data that will simultaneously serve the information needs of various departments. In order to manage product data dynamically, the system provides several interfaces for easy data access and manipulation. The linkage between BOM and its corresponding CAD/CAM system is enabled through the X-window manager: thus an integrated PDM environment is developed. This product management approach improves the consistency and efficiency of product data representation.     

基于Activiti+MongoDB的后勤自由流程信息系统

较大型单位的后勤保障时刻离不开流程管理信息系统,传统方法采用固定流程图和固定表单的方式,无法适应新形势下后勤灵活自主管理的要求.同时,传统信息系统采用的关系型数据库方式在适应当前后勤保障大数据时也捉襟见肘.本文设计并实现了使用Activiti和MongoDB的后勤自由流程信息系统,以自由灵活流程管理为目标,以关系型数据库辅助非关系型数据库为设计理念,给出了自由流程框架、关键接口和重要代码逻辑,以及两类数据库协同的设计方法.实现的系统有效地解决了上述问题,较大地减少了开发人员的工作量,为当前大型企业或单位后勤保障流程管理信息化提供了一个较高效的系统设计参考.     

基于XML的CAPP数据描述技术研究*

提出采用XML技术来描述CAPP系统中的数据信息,结合关系型数据库存储的方法使CAPP系统具有良好的扩展性和灵活性,提高了与制造业信息系统的集成能力。     

基于开放式系统整合平台的设计与实现

论文从应用系统集成的重要性出发,结合某大型交易所开放式系统整合平台的实际工程,分析了目前企业信息化实施存在的问题,根据目前企业信息化实施存在的问题提出了系统整合平台的体系结构,该体系结构能有效解决企业信息共享和数据交换问题。     

特种含能材料制造MES系统的设计

提出了特种含能材料制造工业ERP／MES／PCS三层体系结构MES系统的任务，构造了MES系统的8个可动态重组功能模块和一系列的业务流程，各功能模块与企业管理、先进过程控制体系协同运作，实现了特种含能材料产品的多品种小批量的敏捷制造.此设计总体考虑企业管理和控制，完整地实现了企业管控一体化的信息化建设，具有一定的推广应用价值。     

面向工程试验的数据集成研究*

对分布异构环境中的工程试验数据的有效集成是全局试验决策支持的基础。依据工程数据组织分散、模式复杂多变的特点以及OLAP和数据挖掘对数据的要求,剖析了构建数据集成元对象模型的方法、邦联式工程数据仓库的集成途径和使用元对象模型实施异构数据集成的关键技术。     

An information system for computer-integrated manufacturing systems

One of the main problems when implementing the computer-integrated manufacturing (CIM) concept concerns information integration. In order to support information integration, an information system provided with suitable data models is required. In this paper an information system is presented, which fulfils the requirements for an appropriate information management in CIM. For this purpose, an EXPRESS-oriented information system has been built on top of a commercial relational DBMS. The conceptual model of the information is built in EXPRESS and then parsed and translated to the corresponding relational constructs. A data access interface has been implemented which allows EXPRESS-oriented data manipulation. The information system was developed inside ESPRIT project No. 2202 CIM-PLATO “CIM System Planning Toolbox” to integrate the information used by the tools developed for flexible manufacturing system planning.     

CIMS环境下基于XML的信息交换与集成

计算机集成制造系统是一个围绕制造过程的复杂系统。信息在系统内部的集成及与外部系统之间的交换，都涉及到不同的支撑环境和不同的数据结构的兼容和联系问题。XML(cXtensiblc Markup Language，可扩展的标记语言)为解决跨平台信息集成提供了有效的途径。文章分析了xML的结构特点，探讨了网络环境下数据构成的特点以及信息集成的技术要求，提出了一个利用xML管理各种信息的架构，并将其应用于一个商业电子表单生成系统。     

制造资源共享技术研究与实现

为了实现制造企业间的制造资源共享,提出了制造资源共享模型,在此基础上,分析了集中式、分布式及集中分布式制造资源共享体系结构,提出了以网络化制造平台、重点城市制造业信息化ASP平台和企业制造资源共享管理系统为主体的三级制造资源共享模式,开发了制造资源共享系统,介绍了该系统在四川省制造业信息化工程中的应用。     

基于XML和Web服务的开放式企业管理信息系统构建方案

针对传统企业管理信息系统（Management Information System,MIS）集成过程中出现信息孤岛、不同系统之间数据难以共享等问题,探讨当前企业MIS的集成方式,基于XML和Web服务提出1套开放式的企业MIS构建方案,该方案采用XML文档作为数据存储及不同系统之间传输数据的主要载体,并将Web服务接口作为服务端接口以提高系统的开放性,在该方案中还给出身份验证、安全数据传输以及模块热插拔等关键技术的解决方法,实例表明该方案能基本解决多个系统之间的信息孤岛和数据表示问题,提高系统的可扩展性和可维护性。     

基于工作流的业务流程管理技术应用

现有企业应用集成技术较多关注数据、对象、方法和接口,给企业应用集成带来较高的成本以及较大的复杂性。该文介绍业务流程管理(BPM)和工作流的基本概念,结合某大型制造型企业的设备管理系统开发,研究BPM技术的应用。将代码开发模式转变为可视化建模的开发方式,将面向代码的集成转变成面向流程的集成,提高了系统的灵活性和开发效率。     

A decision support system for cooperative transportation planning: Design,implementation, and performance assessment

In this paper, we describe a decision support system for cooperative transportation planning in the German food industry where several manufacturing companies share their fleets to reduce transportation costs. Besides using vehicles of their fleets, there are different outsourcing options offered by logistics service providers, but these are much more expensive. The decision-making kernel of the decision support system is implemented as a multi-agent-system (MAS). The kernel provides a distributed hierarchical algorithm for cooperative transportation planning and an on-line data layer that contains all the information for decision making. We sketch the distributed hierarchical transportation planning algorithm and identity the required software agents. The MAS interacts via web services with a commercial tour planning system that persistently stores the resulting tour plans, orders, and customer data. Moreover, the tour planning system is used to offer graphical user interfaces to interact with the users. The data layer is updated by order and customer data from the ERP systems of the different manufacturing companies. We describe the architecture and the implementation of the MAS and the overall coupling framework. Furthermore, we discuss the simulation-based performance assessment of the resulting decision support system when the system is applied in a rolling horizon setting and present some computational results. The results demonstrate that the MAS approach is appropriate for the cooperative transportation planning domain.     

Increasing productivity at Saturn

To remain competitive, manufacturing enterprises must increase and simultaneously reduce costs. This requires daily and long term examination and analysis of a plant's functions and operations. Using this data, an enterprise can identify production flow bottlenecks and analyze capacity and other factors, which in turn helps identify improvement opportunities. While such information is critical, it is often a challenge to obtain in a complex manufacturing environment. The automotive industry provides some prime examples of complex manufacturing environments. At Saturn Corp., we turned to academic research-work involving model integrated computing (MIC)-as a framework to organize the diverse types of data our information system must deal with. Using MIC and working with the Vanderbilt University researchers, Saturn built the Saturn Site Production Flow system. This system provides real time information-culled from 80000 data points-to Saturn personnel across the plant. Using SSPF provided information helped Saturn improve throughput at its plant by 10 percent. Through models, we can readily explain a complex data structure in a virtual view of a manufacturing plant floor. Diverse services are required for applications such as process monitoring and control, process simulation, statistical analysis packages, and other data manipulation tools. MIC integrates these tools into a common problem solving environment     

基于实例设计中的产品数据模型及实例库设计

在基于实例的产品设计中,产品数据模型的建立和产品数据结构的设计对于产品相似实例的检索与撮有着至关重要的影响。该文分析了递阶结构表达方式的不足,利用扩展的实体关联（ＥＥＲ）表达方式建立了产品的数据模型,并以油泵产品为例建立了产品数据模型的展开结构。在ＥＥＲ模型向关系模型的转化中,提出了４条转化规则,同时以油泵产品为例,设计了产品主关联数据库和子实例库,实现了实例按属性空间和功能空间进行检索的功能。