基于构件的可重构制造执行系统研究

制造执行系统是实现企业信息集成的关键技术，是企业信息化工程领域的研究热点之一。分析了制造执行系统的定义和功能，并提出基于软件构件的可重构制造执行系统的软件体系结构和实现方法。可重构制造执行系统的开发与运行实践表明，可重构制造执行系统的软件开发效率高、周期短、可扩展性好。     

基于Agent的可重构装配线制造执行系统

针对制造执行系统存在的问题,根据可重构制造模式的理念,设计基于CORBA和多Agent的可重构装配线制造执行系统的体系结构,实现制造执行系统的可重构性和可集成性,构建系统的IDEF0功能模型,给出Agent结构模型及装配资源聚类方法。实际应用表明该系统具有良好的实用性,能满足企业需求。     

构件化可重构制造执行系统研究与实现

从软件重用角度对可重构MES体系结构及相关构件复用技术进行了研究。给出了开放、可扩展的可重构MES平台软件框架及构件获取技术;建立了可重构制造执行系统平台的功能层次结构;并对系统进行了设计和软件实现。该系统己在实际企业生产管理中试运行,结果表明,它提供的功能模块符合企业实际生产需要,并解决了传统制造执行系统适应性和可重构性差等问题。     

基于Web的可重构制造执行系统研究*

介绍了制造执行系统的定义、制造执行系统与管理系统和控制系统的关系。提出了基于Web的可重构制造执行系统的系统模型,阐述了基于Web的可重构制造执行系统的体系结构和实现技术,介绍了基于.NET平台Web技术设计与操作的实现方法及应用实例。     

基于SOA的可重构制造执行系统设计

针对企业制造执行系统需求以及信息交换比较复杂和缺乏扩展性的特点,对比传统制造执行系统(MES)架构,提出一种面向服务且可重构的信息系统架构,该架构以Web服务技术和构件化技术为基础,实现了制造信息的多渠道共享与较强的可扩展性,同时运用此架构结合实例进行了分析和实现。     

基于多agent的离散制造业制造执行系统框架研究

针对离散制造业的特点对离散制造业制造执行系统的功能模块进行了分类。构造了对应的agent模块,以此提出一种基于多agent的分布式离散制造业制造执行系统体系结构,并研究了其中每个agent的运作机制与多agent之间的交互协调机制。特别是构造了策略agent,它与调度agent协同,可更好地实现离散制造业制造执行系统功能的合理、实时调度。这种结构非常有利于离散制造业制造执行系统的管理和控制,具有较好的可集成性、可扩展性和可重构性。     

石化企业制造执行系统及应用

国内石化企业与国外相比在生产管理上尚存在一定差距,这给企业取得竞争优势造成巨大的瓶颈。制造执行系统对于提升企业生产管理水平,促进企业信息化建设具有至关重要的作用,是缩小该差距的有效途径。国外已开发很多优秀的制造执行系统软件,但其在国内应用方面尚有不足,不能较好地适应中国企业生产管理的实际情况。本文针对国内石化企业制造执行系统的需求特点,结合企业业务流程知识,建立统一的工厂模型,设计出以企业数据集成平台为支撑,集生产计划、生产统计、生产调度、操作管理、物料移动、能源管理、关键绩效指标、综合展示等业务模块为一体的面向石化企业的制造执行系统。分析了该系统在石化企业的实际应用效果。实践表明,该方案具有良好的可重构性、可集成性和敏捷性。系统在石化企业中可与原有的信息系统相互支持,实现企业内信息的合理有效集成,增强了业务透明度,提高了工作效率,从而极大提高企业信息管理水平并实现更加高效和优化的生产。系统的成功实施对于相关企业的信息化建设具有重要的指导和借鉴意义。     

基于生产模型的制造执行系统平台研究

介绍了一个基于SP95标准的制造执行系统平台,分别从基础框架、模型构建等角度描述了系统的设计思想,并阐述了系统涉及的基于事件的平台运行机制、事件模型设计等关键设计技术.开发的基于数字化生产模型的制造执行系统平台具有一定的可集成性、可扩展性和可重构性,可适用于装配生产企业MES系统的定制与快速开发.     

制造执行系统柔性应用框架研究

针对制造执行系统应用开发的复杂性,提出了一个制造执行系统的柔性应用框架。在多层服务体系结构的基础上,该应用框架通过运用面向过程的对象分析技术、基于规则的事件服务机制和业务工程分析技术,提供可重构的组织结构、可伸缩的业务流程和可定制的业务规则,使得系统开发和实施的柔性得以提高。同时,运用该柔性框架,对一个实例进行分析和实现。     

制造执行系统的生产管理控制研究

车间调度是制造执行系统生产管理控制的核心功能,因此制造执行系统必须实现车间的优化调度。文章分析了制造执行系统的生产管理控制方法,提出了制造执行系统的车间调度方法。一个已在某航天制造企业使用的制造执行系统软件证实了制造执行系统的生产管理控制方法的正确性。     

An Empirical Methodology for Exploring Reconfigurable Architectures

Recent research in reduced instruction set computer architectures has emphasized the importance of the empirical approach to designing computer architectures: architectural features are analyzed for utility and cost with respect to the system software that uses them. This approach has resulted in architectural simulators that allow computer designers to vary the features of the architecture being simulated and to analyze how the addition or removal of these features affects the cost and performance of the architecture. In this paper we apply this technique to a new area: reconfigurable architectures. Our approach is to use an empirical methodology that emphasizes the interaction between the target software and the reconfigurability features of parallel architectures. We have developed a set of tools, the reconfigurable architecture workbench, that assists in this methodology by allowing parallel programs to be simulated on a target architecture in order to study the performance implications of various reconfigurability features. The workbench is based on a framework, the PCI model, which describes the range of parallel programs, parallel architectures, and reconfiguration features. We present details of the design and implementation of a prototype workbench, GT-RAW. GT-RAW is being used to study the utility of one dimension of reconfiguration for image processing and image understanding applications. We present an example of the experiments that are being conducted with GT-RAW as a demonstration of our empirical methodology.     

The development of an enterprise resources planning system using a hierarchical design pyramid

Today, manufacturers are measured by their ability to respond quickly to sudden, often unpredictable changes in customer needs and wants. Competition beyond the twenty-first century places an increased emphasis upon receiving business information that is accurate and up to date. In order to achieve this, a business planning and closed-loop manufacturing execution system must reflect how work is done, in order to support the overall business objectives without being limited by any hardware, software and human resource constraints. Enterprise resources planning (ERP) is considered to be the most effective computer application in the modern manufacturing industry which meets these requirements. However, only a few manufacturers can design and implement the system successfully. They encounter various problems during the design and implementation cycle. One of the major reasons why they cannot implement the system successfully is the inappropriate use of design and implementation methodology. A systematic design and implementation methodology is therefore proposed for ERP. Called the hierarchical design pyramid (HDP), it encompasses recent research on the ICAM definition method (IDEF) and the object-oriented methodology (OOM) as well as an architecture for any manufacturers who seriously consider ERP implementation.     

Modular machine tools: Design and barriers to industrial implementation

The Reconfigurable Manufacturing System (RMS) paradigm has been developed to address challenges in the design of manufacturing systems and equipment that will meet the demands of modern manufacturing. This research involved the development of Modular Reconfigurable Machines (MRMs); as an emerging technology in reconfigurable manufacturing. MRMs are mechanically modular machines. The modularity permits the kinematic architecture and processing functions of the machine to be reconfigured to meet changing production requirements. This paper will focus on aspects of the mechanical design and the development of a control system that supported the modularity and reconfigurability of the mechanical platform. A modular electronic system is presented that is characterized by a plug and play approach to control scalability. This is complemented by a software architecture that has been developed with a focus on hardware abstraction for the management of an augmented mechanical and electronic architecture. The implications of MRMs for RMSs are discussed and key inhibitors to industrial implementation are identified.     

制造企业信息集成系统的研究

提出制造企业信息集成系统的模型和组成方案,并分析企业资源计划系统、工程设计系统、制造执行系统、车间底层控制和信息集成支撑系统等制造企业信息集成系统的组成模块的功能。     

可重构制造系统可重构逻辑控制器设计与实现

针对可重构制造系统的逻辑控制问题,提出一种可重构逻辑控制器的解决方案．该逻辑控制器具有递阶分布式的控制体系结构,并根据模块化的设计思想设计成多个分离的功能模块．然后给出基于CORBA组件模型(CCM)的可重构逻辑控制器软件的开发过程．由递阶分布式体系、模块化设计和软件组件开发技术实现的可重构逻辑控制器具有快速动态重构的能力,能满足可重构制造系统逻辑控制的要求．