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发展现场总线技术,提高我国过程工业自动化装备水平 总被引:5,自引:0,他引:5
陈铁君 《仪表技术与传感器》2000,(9):1-2,9
文中介绍了国内外FF现场总线技术的发展状况及我国发展FF现场总线技术的政策措施。 相似文献
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现场总线控制系统的特点及应用 总被引:2,自引:0,他引:2
高景平 《仪表技术与传感器》1997,(12):13-14,18
文中把现场总线控制系统与分散控制系统进行了比较,从而论述了其特点和应用背影。 相似文献
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分析现场总线产生的原因,阐述现场总线的概念、体系结构和特点,给出现场总线的发展现状,提出为迎接现场总线这场自控领域内的技术变革应采取的对策;并结合实例说明现场总线具体开发应用方法。 相似文献
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德国PROFIBUS现场总线技术概况 总被引:2,自引:0,他引:2
缪学勤 《仪器仪表标准化与计量》1998,(2):4-10
德国PROFIBUS现场总线技术概况上海工业自动化仪表研究所缪学勤在德国ProfibusUserOrganization(PNO)的组织安排下,我们参观访问了德国电工委员会(DKE),PNOProfibus用户协会,Profibus认证实验室FZI,... 相似文献
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介绍了一种分布式微机数控系统的机间联接结构,阐述了多机之间的通讯原理、信息交换协议及系统中定义的长短帧格式,实践证明,本系统结构符合实际要求,而且速度快、精度高、易扩展、易维护。 相似文献
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Application of an Autonomous Agent Network to Support the Architecture of a Holonic Manufacturing System 总被引:2,自引:2,他引:2
Samrat Mondel M.K. Tiwari 《The International Journal of Advanced Manufacturing Technology》2002,20(12):931-942
To remain a competitive force in the world market, manufacturing enterprises must design and produce new products in an effective
way. To reduce the product launching time, manufacturing enterprises must be versatile, open to changes, and capable of designing
and modifying their own facilities and processes efficiently for the design of new products. In this context, the concept
of autonomous, adaptive, cognitive and cooperating entities known as "holons" is conceived which leads to the evolution of
a holonic manufacturing system (HMS) where highly distributed control paradigms are adopted to alleviate the problems related
to frequent process disturbances. In order to streamline the functioning of an HMS, it is necessary to form an efficient,
flexible and responsive network of agents, which are intra-holonic entities that inherit the same characteristics as the holons.
This network of agents can be termed an autonomous agent network. The agent is formed by the parties, which are the functional
units of the holonic manufacturing system. The aim of this paper is to specify the communication protocols and subsequently
synthesise and cluster the individual parties into autonomous agents in accordance with the basic constraints of a holonic
manufacturing system. Here a fuzzy c-means clustering algorithm is proposed to club the parties to capture effectively the
uncertainty and imprecision associated with them. Besides the grouping of the parties to form agents, the proposed fuzzy-based
clustering algorithm ensures that the agents formed are more amenable to the dynamic environment prevailing on the shop floor
of present day automated manufacturing systems and thus makes the essence of a holonic manufacturing system successful . Keeping
in mind the imprecision, uncertainty, and conflicting nature of objectives, the proposed approach aptly models the problem,
and its applicability is exemplified by a test problem.
ID="A1"Correspondance and offprint requests to: M. K. Tiwari, Department of Manufacturing Engineering, National Institute of Foundry and Forge Technology, Hatia, Ranchi
834 003, India. E-mail: mkt09@hotmail.com 相似文献
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以一个飞机仿真训练系统为研究基础,重点讨论了分布式仿真系统中的通信机制与需求,提出使用组件间不对称的通信机制来满足通信系统各方不同的通信需求,提高了分布式仿真的实时性和准确性。 相似文献
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介绍分布式计算机数控系统通信网络的结构、通信协议、通信与管理软件的特点及功能。经现场应用证明 ,该系统具有设计合理 ,可靠性高 ,实用性强等特点 相似文献
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朱祥彬 《仪器仪表标准化与计量》2010,(5):36-39
在分析WIA-PA网络的安全风险的基础上,提出了WIA-PA网络的安全目标。详细介绍了WIA-PA网络的安全管理架构、安全通信协议栈及密钥管理。 相似文献
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针对串行通讯技术在数控管切割系统中的运用,介绍了五轴联动数控管切割机床的一般系统构成和控制策略,对数控系统的核心控制单元横河PLC的通讯协议进行了详解,列出发送帧、接收帧的结构图,同时介绍了基于VB6.0的上位机串行通讯程序开发控件,给出开发串行通讯程序的流程图,写出的关键性代码经过简单修改,即可运用于新的串口通讯程序开发中,具有一定的实用性.研究成果已通过实际测试,并应用于五轴联动数控管切割机床的开发中. 相似文献
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通过在火电厂生产过程控制中建立DCS和PLC的通信,使系统集成大大简化,维护十分简便,达到节能降耗,解放人力资源的目标。 相似文献