基于CPCI的动态可重构数据采集系统

本文基于CPCI和SOPC技术,提出了动态可重构数据采集系统的设计思想,详细描述了系统可重构软硬件的实现,开发了基于CPCI的动态可重构采集系统,指出了动态可重构采集系统的应用前景.     

金属厚壁结构中深裂纹的重构方法研究

为了提高涡流方法检测厚壁结构中深裂纹的检测精度,使用三维涡流程序对涡流信号进行了仿真,通过分析传感器布置方案对检测信号及噪声的影响,提出了基于反面涡流检测信号的深裂纹重构策略,并开发了相应的逆问题反演程序,对重构策略的可行性进行了验证.数值仿真结果表明,所提出的基于反面涡流检测信号的深裂纹重构策略,可有效提高厚壁结构中深裂纹的重构精度,并可用于工程实践.     

面向服务的ERP产品可重构开发模型研究

目前,ERP系统在开发中主要有两个问题:①ERP产品在开发过程中存在大量的重复工作,系统的开发周期比较长;②ERP产品的刚性太强,系统的柔性差,适应性不强,至今还没有可参考的解决模型.本文从软件的体系结构出发,研究当前企业应用集成实现技术的局限性,提出了基于面向服务体系结构、可重构的ERP软件开发模型,阐述了面向服务模型、面向服务的ERP可重构模型、基于服务可重构ERP系统的构建开发过程.     

基于计算无关模型的企业ERP系统重构架构研究

针对当前企业ERP系统中存在的灵活性差,开发时间长等问题,提出并构建可重构ERP系统的体系结构。通过需求分析,明确企业ERP系统构建中对于集成性、扩展性、维护性等方面的要求,基于可重用构建的思想,建立了柔性ERP系统构建体系架构,详细讨论了以面向可重构ERP架构的为目标的构件开发模式,以及基于计算无关模型的重用模式。该体系架构的研究,为建立柔性企业ERP系统提供了基础和指导。     

基于计算无关模型的企业ERP系统重构架构研究

针对当前企业ERP系统中存在的灵活性差,开发时间长等问题,提出并构建可重构ERP系统的体系结构。通过需求分析,明确企业ERP系统构建中对于集成性、扩展性、维护性等方面的要求,基于可重用构建的思想,建立了柔性ERP系统构建体系架构,详细讨论了以面向可重构ERP架构的为目标的构件开发模式,以及基于计算无关模型的重用模式。该体系架构的研究,为建立柔性企业ERP系统提供了基础和指导。     

动态重构中总线宏的结构与实现

FPGA动态重构系统通常划分为静态模块和可重构模块,他们之间的通信必须要通过一个固定通路,以使得静态模块和在运行的可重构模块不受正在重构的可重构模块的影响.本文介绍了基于Xilinx器件的可重构系统开发中所使用的用于可重构模块与其他模块通信的称为总线宏的结构,并研究了总线宏的实现方式以及它的控制.     

可重构专用微处理器设计方法的分析

可重构计算技术在上世纪末到本世纪初成为计算机体系结构中的一个热门的研究领域.研制可重构微处理器体系结构也是今后微处理器体系结构研究的重要发展方向之一.本文首先对可重构技术进行了简要的介绍.在此基础上,从可重构粒度、范围和时机三个方面对可重构微处理器的设计方法做了分析.最后,文章提出了一种基于＂标准基本单元-可配置通路＂的设计思路.     

可重构片上系统设计流程中的动态重构问题研究

近年来,可重构片上系统已成为科学研究及嵌入式应用领域中应对复杂计算需求的有效技术解决方案.针对目前缺少一个从系统级设计到应用实现,统一、综合规划动态重构问题的系统设计流程,以及动态重构过程对系统设计人员不透明等问题,在系统设计层给出了一种过程级软硬件统一编程模型.在此框架内,设计人员通过调用已根据应用特性进行优化的软硬件协同函数,即可利用高级语言完成系统功能描述;在细节设计层提出了基于单位面积加速比的软硬件任务调度算法,实时管理动态可重构资源;在应用实现层,以可重构专用图形加速卡为原型系统,论述动态可重构系统实现中的关键技术.实验及测试结果验证了通过将动态重构问题置于整个系统设计流程中予以考虑,能够达到提升系统开发效率之目的.     

嵌入式虚拟仪器软件可重构设计技术研究

嵌入式虚拟仪器(EVI)软件可重构是指框架和功能的重构;结合面向对象技术和组件技术,系统地阐述了软件可重构模块化设计的原理、软件可重构算法、可重构软件结构框架设计和可重构软件开发方法;通过分析可重构软件的设计原理和设计思路,提出了一套比较详细的可重构软件的开发方法;经工程实践应用,设计方法合理可行,有效提高了嵌入式虚拟仪器软件的开发效率,达到软件复用及重构的目的。     

新一代无线通信系统的软件可重构研究

在新一代无线通信统一平台上,基于嵌入式处理模块与通用PC相结合的架构,对平台软件的重构性进行研究.介绍了基于SCA的新一代无线通信系统的软件体系结构.重点阐述了系统软件重构的几个关键技术:波形组件库的建立,核心框架的接口实现、域配置文件以及CORBA(common object request broker architecture)的应用开发,并对可重构软件的开发流程进行了探讨.     

A distributed architecture for reconfigurable control of continuous process operations

This paper considers a new distributed approach to reconfigurable control of continuous process operations such as in chemical plants. The research is set on a premise that emerging business pressures of product customization and industrial globalization will lead to increased need for reconfigurability in process plants. The ability of processes to support dynamic and smooth reorganization of process schemes in tandem with the changing requirements of supply chains will become important in future. Conventional control approaches based on hierarchical architectures are limited in dealing with such emerging requirements due to their inflexible structures and operating rules. Instead, more distributed approaches are required which can support increased level of reconfigurability in control systems, especially at the lower levels in hierarchy where the visibility to disturbances remains high. In this paper, one such distributed approach is considered based on the concepts of holonic manufacturing and supply chain management. The proposed approach distributes the functionality of process control into several reconfigurable process elements. These elements, while having a stand-alone capability for making their own control decisions, are also able to reconfigure themselves into alternative process schemes which evolve with the changing requirements of production. An analogy between process plants and so-called dynamic supply networks or virtual enterprises is used in this paper to define the composition of reconfigurable process elements and their operations. The proposed approach is shown to offer improved process control system reconfigurability and a control architecture which is compatible with the supply chain management needs at the next higher level. The purpose of this paper is qualitative and motivational. It is aimed to propose a new research direction in the field of reconfigurable process control.     

Self-organization of reconfigurable protocol stack for networked control systems

In networked control systems (NCS), the control performance depends on not only the control algorithm but also the communication protocol stack. The performance degradation introduced by the heterogeneous and dynamic communication environment has intensified the need for the reconfigurable protocol stack. In this paper, a novel architecture for the reconfigurable protocol stack is proposed, which is a unified specification of the protocol components and service interfaces supporting both static and dynamic reconfiguration for existing industrial communication standards. Within the architecture, a triple-level self-organization structure is designed to manage the dynamic reconfiguration procedure based on information exchanges inside and outside the protocol stack. Especially, the protocol stack can be self-adaptive to various environment and system requirements through the reconfiguration of working mode, routing and scheduling table. Finally, the study on the protocol of dynamic address management is conducted for the system of controller area network (CAN). The results show the efficiency of our self-organizing architecture for the implementation of a reconfigurable protocol stack.     

A process-driven computing model for reconfigurable semiconductor manufacturing

Reconfigurability is essential for semiconductor manufacturing systems to remain competitive. Reconfigurable systems avoid costly modifications required to change and adapt to changes in product, production and services. A fully automated, collaborative, and integrated while reconfigurable manufacturing system proves cost-effective in the long term and is a promising strategy for the semiconductor manufacturing industry. However, there is a lack of computing models to facilitate the design and development of control and management systems in a truly reconfigurable manner. This paper presents an innovative computing model for reconfigurable systems and controlled manufacturing processes while allowing for the integration of modern technologies to facilitate reconfiguration, such as radio frequency identification (RFID) and reconfigurable field programmable gate array (FPGA). Shop floor manufacturing activities are modeled as processes from a business perspective. A process-driven formal method that builds on prior research on virtual production lines is proposed for the formation of a reconfigurable cross-facility manufacturing system. The trajectory of the controlled manufacturing systems is optimized for on-demand production services. Reconfigurable process controllers are introduced in support of the essential system reconfigurability of future semiconductor manufacturing systems. Implementation of this approach is also presented.     

Self-Test Components for Highly Reconfigurable Systems

Verification of component-based systems presents new challenges not yet completely addressed by existing testing techniques. This paper proposes a new approach for automatically testing highly reconfigurable component-based systems, i.e., systems that can be obtained by changing some components. The paper presents an industrial case that motivates our research and proposes a testing infrastructure that tracks run-time information for components. The collected information is used for automatic testing new versions of existing components and new configurations of existing systems.     

基于机器人的可重构装配系统

本文分析了市场全球化给企业带来的挑战和机遇 ,提出了基于机器人的可重构装配系统 .在分析国外在可重构制造领域的研究状况的基础上 ,提出了基于机器人可重构装配系统的设计内容和方法 ,并提出了可重构装配系统今后需研究的方向     

基于对象知识网的企业信息系统形式化表达研究*

为了形式化地研究企业信息系统,提出了基于对象知识网的企业信息系统形式化方法。首先,研究了对象知识网及信息传递关系网的数学描述,分析了对象知识网表达信息系统的规则;然后给出了对象知识网构建的算法以及企业信息系统形式化表达的方法;最后,通过对象知识网在某企业生产管理信息系统形式化中的应用,验证了基于对象知识网的形式化方法的可行性及有效性,为企业信息系统的定量研究提供了数学理论的支持,奠定了信息系统优化的理论基础。     

Building an E-Business from Enterprise Systems

Building their companies into successful e-businesses has become an important objective for today's enterprises. Conceptually, it embodies the enabling of the business with such capabilities as global networking, streamlining business processes, sharing information, agility in responding to the market, and intelligent decision making. But how can these concepts be implemented in actual enterprises? Why do these desirable attributes of business systems suddenly become the definition of competency of companies large and small? This paper describes the framework for building an e-business from the enterprise information systems' perspective. Increasingly enterprise systems have extended beyond the traditional business functions and include such new features as supply-chain management, customer relationship management and electronic commerce. The shifting focus is driven by the adoption of the Web as a new channel for product distribution, marketing, and interacting with customers. The integration of the traditional as well as the Web-oriented functions is the cornerstone for a successful e-business. This paper presents a framework for e-businesses that on one hand build on the enterprise systems but on the other hand encompasses the new e-business dimensions.     

可重构体系结构的特征及应用

文章介绍了可重构体系结构的概念、特征和应用。着重介绍了可重构体系结构的分类及其适用领域,可重构计算系统的总体结构特征和可重构处理单元RPU的结构特征,对基于FPGA的可重构系统和其他可重构系统进行了比较,并总结了当前可重构体系结构的优点以及存在的问题。     

Design of reconfigurable manufacturing systems

This paper explains the rationale for the development of reconfigurable manufacturing systems, which possess the advantages both of dedicated lines and of flexible systems. The paper defines the core characteristics and design principles of reconfigurable manufacturing systems (RMS) and describes the structure recommended for practical RMS with RMS core characteristics. After that, a rigorous mathematical method is introduced for designing RMS with this recommended structure. An example is provided to demonstrate how this RMS design method is used. The paper concludes with a discussion of reconfigurable assembly systems.