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。     

A novel methodology to measure the responsiveness of RMTs in reconfigurable manufacturing system

Reconfigurable manufacturing systems are designed to deliver exact functionality and capacity that is needed, when it is needed. The reconfigurable machine tool (RMT) plays a pivotal role in the accomplishment of this objective through their built in modular structure consisting of basic and auxiliary modules along with the open architecture software.     

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．     

A multiagent-based control system applied to an educational shop floor

This paper addresses the design and implementation of a multiagent-based control architecture to support modular reconfigurable production systems. The requirements for plugability of modules (manufacturing components) and product changes were considered and tested against an educational platform based on Fischertechnik, which resembles a production system composed of several workstations connected by a crane and conveyors.     

A 6-DOF reconfigurable hybrid parallel manipulator

This paper presents a case study on a reconfigurable hybrid parallel robot dubbed ReSl-Bot. It addresses the realm of reconfigurable 6-DOF parallel mechanisms, for sustainable manufacturing. It also features a self-reconfigurable architecture. A systematic analysis involving kinematics, constant orientation workspace, singularity and stiffness is developed in detail. Interesting features are discussed, revealing some unique characteristics of the studied architecture. A multi-objective optimization procedure is also carried out with weighted stiffness, dexterity and workspace volume as the performance indices.     

统计分析软件驱动的可重构SPC系统

全面集成化的制造企业信息系统需要多样化、敏捷化的统计过程控制（Statistical Process Control,SPC）系统,以实现基于数据的产品质量管理决策。基于领域分析构造了SPC领域模型,设计了基于通用统计分析软件平台的可重构SPC系统框架,以具有扩展点的组件化可重构架构满足制造企业应用模式和配置模式的可重构需求。然后采用SPSS（Statistical Package for the Social Science,社会科学统计软件包）实现了可重构SPC系统,通过引入SPSS组件,执行SPSS Syntax命令,实现对SPC的可视化统计分析。最后以加工误差分析实例说明系统的有效性,为全面质量控制提供了一种数字化应用。     

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。     

Reconfigurable and transportable container-integrated production system

In this paper, the concept and the prototype realization of a novel reconfigurable small-footprint manufacturing system in a transportable container is presented. The containerized format enables transportation of the system to provide on-site manufacturing, enabling the benefits of localized service delivery without duplication of equipment at multiple locations.Three industrial product use cases with varying manufacturing and performance requirements were analysed. All of the use cases demanded highly customized products with high quality in low production volumes. Based on their requirements, a general system specification was derived and used to develop a concept for the container-integrated factory.A reconfigurable, modular manufacturing system is integral to the overall container concept. Production equipment was integrated in the form of interchangeable process modules, which can be quickly connected by standard utility supply and control interfaces. A modular and self-configuring control system provides assisted production workflow programming, while a modular process chain combining Additive Manufacturing, CNC milling, precision assembly and cleaning processes has been developed.A prototype of the container-integrated factory with reconfigurable process modules and control system has been established, with full functionality and feasibility of the system demonstrated.     

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.     

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CAN总线的可重构SHM系统设计

针对结构健康监测(SHM)系统现场节点功能固化,不便于机动配置及后期维护等问题,提出一种基于CAN总线的可重构SHM系统架构,设计节点功能重构、网络结构重构以及资源分配重构等技术。以功能适配接口及嵌入式操作系统的软硬件协同实现节点功能重构,以自组织特征映射网实现网络结构重构的优先级聚类,以基于组件对象模型的上位监控软件实现资源的按需分配。利用该方法设计的系统具有灵活、高效和一定自主性等特点。     

Model-based platform-specific co-design methodology for dynamically partially reconfigurable systems with hardware virtualization and preemption

To facilitate the development of the dynamically partially reconfigurable system (DPRS), we propose a model-based platform-specific co-design (MPC) methodology for DPRS with hardware virtualization and preemption. For DPRS analysis and validation, a model-based verification and estimation framework is proposed to make model-driven architecture (MDA) more realistic and applicable to the DPRS design. Considering inherent characteristics of DPRS and real-time system requirements, a semi-automatic model translator converts the UML models of DPRS into timed automata models with transition urgency semantics for model checking. Furthermore, a UML-based hardware/software co-design platform (UCoP) can support the direct interaction between the UML models and the real hardware architecture. Compared to the existing estimation methods, UCoP can provide accurate and efficient platform-specific verification and estimation. We also propose a hierarchical design that consists of a hardware virtualization mechanism for dynamically linking the device nodes, kernel modules, and on-demand reconfigurable hardware functions and a hardware preemption mechanism for further increasing the utilization of hardware resources per unit time. Further, we realize a dynamically partially reconfigurable network security system (DPRNSS) to show the applicability and practicability of the MPC methodology. The DPRNSS cannot only dynamically adapt some of its hardware functions at run-time to meet different system requirements, but also determine which mechanism will be used. Our experiments also demonstrate that the hardware virtualization mechanism can save the overall system execution time up to 12.8% and the hardware preemption mechanism can reduce up to 41.3% of the time required by reconfiguration-based methods.     

CORBA中间件在分布式飞行控制中的应用

针对无人直升机可重配分布式控制对软件平台的要求,借鉴操作系统与应用软件之间的中间件技术,利用实时CORBA的ORB技术、虚拟资源网和实时事件服务机制构建无人直升机分布式控制系统软件平台。虚拟资源网可使控制组件网络化,每个组件有唯一地址,网络中的其它资源不需要知道它的确切位置,只根据网络资源名就可以访问它。实时事件服务可使各控制组件快速、有效地通信,并且使组件设计时结构解耦,事件通道在事件提供者和事件消费者之间建立中介,有利于系统硬件的改进及软件组件的重配。应用仿真实例说明这种软件平台能有效、方便、快捷地实现分布式控制系统。     

基于模块的动态可重构系统设计

可重构计算是介于通用处理器和ASIC之间的全新计算解决方案,是一种即保留了硬件计算的速度性能,又兼具软件编程情况灵活性的算法实现方式.介绍了基于模块的动态可重构系统设计方法和模块间的通信方式.实现了基于单片Xilinx Virtex-Ⅱ Pro FPGA片上动态自重构系统,可在系统运行时以较短的时间开销灵活加载所需的重构功能模块,充分体现了可重构计算的性能与速度的优势.     

基于XML的虚拟仪器语言技术研究

针对可重构的测试系统对虚拟仪器系统提出的在线升级和功能调整要求,提出了基于XML的虚拟仪器描述语言规范(XVIML,XML based virtual instrument markup language)的可装配重构的虚拟仪器系统。通过定义可重构虚拟仪器系统的描述规范和基于XVIML的芯片构件和连接关系描述,采用基于XVIML的动态解析器模型和基于构件的装配模型,实现了虚拟仪器系统的动态解析、构件的查找和装配;形成了一个测试功能可以根据测试任务快速重组的测试系统;解决了可重构测试系统对虚拟仪器提出的快速和在线重构要求。     

A Modularized Personal Robot DRP I: Design and Implementation

In this paper, we investigate comprehensive issues of modularized robot systems and present architecture for effective development of personal robots. The proposed architecture includes the interface and interaction methodology of the hardware modules and the software among the modules. Based on the architecture, we present a fully modularized personal robot dynamically reconfigurable personal robot I. Its hardware modules are easily added to or removed from the original system, and also the distributed software functions of the modules are rearrangeable accordingly. We focus on how to effectively build up the robot, and discuss the dynamically reconfigurable features of it for evaluating the proposed idea and approach.     

计算机辅助可重构制造系统设计

可重构制造系统是为了快速而准确地提供响应新的高层需求所需的生产能力和生产同一零件族内的新零件所需的制造功能，从一开始就设计成可面向系统级和生产资源级快速而又以有竞争力的成本重构的制造系统，文中分析了可重构制造系统的设计方法及其特征，提出了计算机辅助可重构制造系统设计这一新的研究方向，说明了包括动态适应学习识别机制，建模分析与性能优化，专家系统、集成设计等模块的设计机辅助可重建制造系统设计的流程，实现了可重构制造系统的集成设计。     

An adapted NSGA-2 algorithm based dynamic process plan generation for a reconfigurable manufacturing system

With burgeoning global markets and increasing customer demand, it is imperative for companies to respond quickly and cost effectively to be present and to take the lead among the competitors. Overall, this requires a changeable structure of the organization to cater to a wide product variety. It can be attained through adoption of the concept of reconfigurable manufacturing system (RMS) that comprises of reconfigurable machines, controllers and software support systems. In this paper, we propose a new approach to generate the dynamic process plan for reconfigurable manufacturing system. Initially, the requirements of the parts/products are assessed which are then compared with the functionality offered by machines comprising manufacturing system. If the production is feasible an optimal process plan is generated, otherwise the system shows an error message showing lack of functionality. Using an adapted NSGA-2 algorithm, a multi-objective scenario is considered with the aim of reducing the manufacturing cost and time. With the help of a numerical example, the efficacy of the proposed approach is demonstrated.     

A conceptual framework for agent-based agile manufacturing cells

Abstract. Agile manufacturing techniques are perceived as the manufacturing systems of the future. Agile manufacturing cells are dynamic and reconfigurable and the modelling of the manufacturing cells and its interaction mechanism is critical to its successful use. This paper deals with the architecture and cooperation mechanism of web‐based agile manufacturing cells. Based on an analysis of structure and organization requirements of agile manufacturing cells and a comparison of three basic architectures of manufacturing systems, the quasi‐heterarchical architecture is used for the agile manufacturing cell. Functional layers are defined in this architecture to make the cell's control system reconfigurable and reusable. Agent technology is adopted for implementation of each layer's functions to establish an agent‐based model of agile manufacturing cells. Four types of agents including cooperation agent, job management agent, resource broker agent, and resource control agent are defined, and their functions discussed. Finally, a real time interaction mechanism of the agents is presented by considering the activities during the agents’ cooperation in an agile manufacturing cell.