共查询到20条相似文献,搜索用时 15 毫秒
1.
基于制造网格的虚拟企业组织变更与制造资源调度问题研究 总被引:7,自引:0,他引:7
为提高虚拟企业的组织和运营效率,引入网格技术,基于制造网格构建面向应用的虚拟企业架构。在虚拟企业环境下,根据制造资源不同的调度阶段,分别建立基于外网格的虚拟企业制造系统和基于内网格的成员企业制造子系统;提出以制造资源特征匹配为核心的虚拟企业分布式调度策略和成员企业本地调度策略。针对特征匹配过程,建立制造资源特征集,对每个特征集制订相应的匹配准则,以保证特征匹配的可行性,进而完成调度过程。最后,通过定制型人工关节产品开发实例,阐述了基于制造网格的虚拟企业组织和制造资源调度过程。 相似文献
2.
面向制造网格的应用平台及虚拟企业建模研究 总被引:22,自引:0,他引:22
在分析制造网格、计算网格和网络化制造之间差异的基础上,探讨了面向制造网格的应用平台及虚拟企业 建模等问题。首先,分析了制造网格和网络化制造在资源组织和应用模式上存在的差异,提出一种面向制造网格 的应用框架;其次,研究了制造网格相对于计算网格所具有的多变业务目标、多级资源共享、资源服务的提供和 结果提交的在线和离线混合方式的特点,形成了制造网格的应用内涵;然后,在剖析计算网格、基于资源服务的 制造网格以及应用程序等基础上,形成了从业务链、资源服务链到网格节点链的处理过程,并最终导出了面向制 造网格应用的虚拟企业的组织模型。最后,通过对问题的量化描述了应用平台的处理过程和算法。上述研究对于 推动制造网格的应用和虚拟企业的组织建模具有积极的意义。 相似文献
3.
S. Saravana Sankar S. G. Ponnanbalam C. Rajendran 《The International Journal of Advanced Manufacturing Technology》2003,22(3-4):229-236
Though the designers of Flexible Manufacturing Systems (FMS) strive to ensure the maximum flexibility in the system, in practice, after the implementation of such systems the operational executives often find it hard to accommodate frequent variations in the part designs of incoming jobs. This difficulty can very well be overcome by scheduling the variety of incoming parts into the system efficiently. In this work an appropriate scheduling mechanism is designed to generate a nearer-to-optimum schedule using Genetic Algorithm (GA) with two different GA Coding Schemes. Two contradictory objectives of the system were achieved simultaneously by the scheduling mechanism. The results are compared with those obtained by different scheduling rules and conclusions are presented. 相似文献
4.
在制造型虚拟企业中可以将底层设备运行参数用于整个虚拟企业生产过程的运行控制,通过全局管理与底层控制的集成以提高虚拟企业的敏捷性。研究监测、调度、管理集成的虚拟企业生产过程控制策略,通过实时检测、采集、处理和综合分析制造过程各主要设备的运行状态和负荷参数,为设备工作状况、生产效率、生产能力使用与储备情况分析提供实际数据,也为虚拟企业生产调度和生产成本分析提供直接依据。提出的在线检测、离线控制的方式符合技术适用性原则,有利于虚拟企业控制生产进度、提高对紧急订单及设备故障处理的敏捷性。 相似文献
5.
6.
J. Huang Z. D. Zhou Y. P. Chen 《The International Journal of Advanced Manufacturing Technology》2004,23(7-8):620-625
On the basis of an analysis of the differences between virtual and traditional enterprise including the disadvantages of traditional enterprise, this article addresses the issues of information security and the impact of concurrent events. Because the Internet is an open network, some of the major issues for a virtual enterprise are that they are susceptible to attacks and that concurrent tasks impact each other. We propose a security-based agent for building a safeguard for a virtual enterprise to protect its information, and to reasonably distribute tasks to cooperative objects to solve the issue of concurrent events. The security-policy management and task-scheduling modules are cores of the agent. The agent was developed with Visual C++ 6.0. 相似文献
7.
依据制造产品对各种制造资源的需求匹配关系和制造网格中已封装资源的综合复杂度,给出了制造网格中各类资源的加权负载计算方法,并根据各类资源的加权负载,提出了制造网格资源分组调度策略。分析表明,本文提出的基于加权负载计算的制造网格资源分组调度策略与目前普遍采用的基于多级代理的调度策略相比,具有资源调度方案设计简洁、易于实现和资源利用效率高等优点。 相似文献
8.
9.
10.
11.
12.
C.-H. Kim Y.-J. Son T.-Y. Kim K. Kim K. Baik 《The International Journal of Advanced Manufacturing Technology》2006,28(9):1025-1030
As the advent of digital economy changes business environment dramatically, virtual enterprise (VE), in general the interactions
among business partners in a value chain, has become a key factor to survive under the competitive business environment. VE
reveals that more complex and dynamic business processes should be considered as assembled service components in order to
integrate the collaborative business processes. Therefore, a formal standard schema for describing and managing the business
processes is required. In this paper, we propose a consistent modeling approach that combines enterprise modeling and simulation
modeling to design a value chain of a VE. This methodology will provide designers with insight into the business processes
of a VE and help identify and resolve unpredictable bottlenecks on the execution of virtual business processes. This paper
also illustrates an implemented modeling tool which is based on the generalized model suggested by the working group of the
international conference on enterprise integration and modeling technology (ICEIMT) and notations by the object management
group (OMG)’s unified modeling language (UML) profile for enterprise distributed object computing (EDOC). 相似文献
13.
通过分析指出,数据的不准确是导致企业联盟合作伙伴选择不当的主要原因,为此,提出构建第三方可信系统,以支持企业联盟的建立.建立了第三方可信系统体系结构,阐述了系统的关键技术,包括动态资源规范化管理、Internet信息集成、企业联盟数据的集成和动态指标体系的建立,上述关键技术的应用,使系统达到了支持企业联盟资源的统一表达、企业联盟运行数据的获取和Internet数据集成的目的,从而有效提升了数据的准确性. 相似文献
14.
15.
基于网格的应用服务提供商平台制造资源共享方法研究 总被引:2,自引:0,他引:2
针对网络化制造应用服务提供商平台的网络带宽瓶颈和服务能力不足的问题,在传统中央服务器一对多模型的基础上,提出了基于网格的多对多服务模型,将平台提供的制造资源服务由多个分布的网格服务节点协同完成.面向多对多服务模型,建立了以服务为中心的制造资源模型,采用面向对象的方法建立制造资源模板,实现了基于资源描述框架的元数据描述.在制造资源的发现方面,采用分布式和集中式相结合的机制,建立了相应的分层模型,并给出资源查找过程.最后,讨论了平台原型系统的组件结构及关键技术,并通过原型系统的开发和初步应用,验证了模型的可行性和实用性. 相似文献
16.
M. A. S. Monfared J. B. Yang 《The International Journal of Advanced Manufacturing Technology》2007,33(5-6):545-559
The automation and integration of manufacturing planning, scheduling and control functions have, for a long while, been targeted
in computer-integrated manufacturing (CIM) and artificial intelligence (AI) approaches. Current systems, however, are human-based
and they can only be characterised as decision support systems (DSS) rather than automated systems. Global competition and
the need for improved responsiveness, particularly in low-volume, high-variety manufacturing industries, necessitate further
integration and automation in planning, scheduling and control functions. We consider that, to achieve automation, the concepts
and techniques from operations research (OR), control theory (CT), and computer science (CS) should be integrated, enriched
and unified to provide a platform for automation. This paper presents a fresh perspective for understanding the design issues
involved and proposes a new framework for the automation and integration of planning, scheduling and control functions. A
fully automated flow shop production system is presented to illustrate the applicability of the new framework. 相似文献
17.
18.
虚拟车间异地制造资源集成方法 总被引:4,自引:0,他引:4
集成异地制造资源是虚拟车间的基本要求,需要解决资源模型标准化、克服硬软件平台异构性和制造资源评价与选择三个方面的问题。建立了用于一个制造执行系统的制造资源数据模型,采用了CORBA技术解决异地、异种数据库读写问题,应用了模糊层次分析方法进行制造资源评价与选择。 相似文献
19.