Dear Editor,This letter deals with automatically constructing an OPC UA information model(IM)aimed at enhancing data interoperability among heterogeneous system components within manufacturing automation systems.Empow...Dear Editor,This letter deals with automatically constructing an OPC UA information model(IM)aimed at enhancing data interoperability among heterogeneous system components within manufacturing automation systems.Empowered by the large language model(LLM),we propose a novel multi-agent collaborative framework to streamline the end-to-end OPC UA IM modeling process.Each agent is equipped with meticulously engineered prompt templates,augmenting their capacity to execute specific tasks.We conduct modeling experiments using real textual data to demonstrate the effectiveness of the proposed method,improving modeling efficiency and reducing the labor workload.展开更多
针对伺服阀生产过程中存在的设备种类繁多、不同供应商设备之间无法交换数据、数据集成工作复杂困难的问题,提出基于OPC UA (Object Linking and Embedding for Process Control Unified Architecture)和ETL (Extract-Transform-Load)...针对伺服阀生产过程中存在的设备种类繁多、不同供应商设备之间无法交换数据、数据集成工作复杂困难的问题,提出基于OPC UA (Object Linking and Embedding for Process Control Unified Architecture)和ETL (Extract-Transform-Load)的综合解决方案。该方案使用OPC UA作为通信协议完成设备之间的高效通信,利用ETL技术设计并实现了伺服阀综合应用系统。样机试验验证了方案的有效性。该方案实现了产线信息化过程中的设备互操作能力,是确保伺服阀质量可靠性和性能一致性的关键基础技术。展开更多
针对传统OPC服务器基于COM/DCOM组件技术并不是依赖于WINDOWS平台,并且在网络传输数据以及在安全性等方面存在的一些缺陷的问题,提出了OPC UA(Object Linking and Embedding for Process Control Unified Architecture,统一架构)标准。...针对传统OPC服务器基于COM/DCOM组件技术并不是依赖于WINDOWS平台,并且在网络传输数据以及在安全性等方面存在的一些缺陷的问题,提出了OPC UA(Object Linking and Embedding for Process Control Unified Architecture,统一架构)标准。通过OPC UA客户端使用服务完成查找服务器、与服务器建立连接、浏览OPC UA服务器地址空间、订阅监视变量节点实时数据及展现实时数据变量曲线图等任务。重点是通过对模拟量类型的订阅变量进行采集并用实时曲线图显示,最终实现OPC UA客户端实时曲线图。展开更多
We survey contemporary studies of hadrons and strongly interacting quarks using QCD's Dyson-Schwinger equations, addressing the following aspects: confinement and dynamical chiral symmetry breaking; the hadron spe...We survey contemporary studies of hadrons and strongly interacting quarks using QCD's Dyson-Schwinger equations, addressing the following aspects: confinement and dynamical chiral symmetry breaking; the hadron spectrum; hadron elastic and transition form factors, from small-to large-Q2; parton distribution functions; the physics of hadrons containing one or more heavy quarks; and properties of the quark gluon plasma.展开更多
基金supported supported by the Fundamental Research Funds for the Central Universities(226-2024-00004)the National Natural Science Foundation of China(U23 A20326)Key Research and Development Program of Zhejiang Province(2025C01061).
文摘Dear Editor,This letter deals with automatically constructing an OPC UA information model(IM)aimed at enhancing data interoperability among heterogeneous system components within manufacturing automation systems.Empowered by the large language model(LLM),we propose a novel multi-agent collaborative framework to streamline the end-to-end OPC UA IM modeling process.Each agent is equipped with meticulously engineered prompt templates,augmenting their capacity to execute specific tasks.We conduct modeling experiments using real textual data to demonstrate the effectiveness of the proposed method,improving modeling efficiency and reducing the labor workload.
文摘针对伺服阀生产过程中存在的设备种类繁多、不同供应商设备之间无法交换数据、数据集成工作复杂困难的问题,提出基于OPC UA (Object Linking and Embedding for Process Control Unified Architecture)和ETL (Extract-Transform-Load)的综合解决方案。该方案使用OPC UA作为通信协议完成设备之间的高效通信,利用ETL技术设计并实现了伺服阀综合应用系统。样机试验验证了方案的有效性。该方案实现了产线信息化过程中的设备互操作能力,是确保伺服阀质量可靠性和性能一致性的关键基础技术。
文摘为解决纺织自动化生产中各类设备数据采集系统应用接口形式不一、信息集成困难、数据可视化程度低等问题,提出了一种基于OPC UA框架的筒纱自动落筒及包装生产线数据采集系统。分析了生产线中各类生产设备关键部件和功能,基于OPC UA信息建模标准,建立了筒纱自动落筒及包装生产中各关键设备信息模型。结合生产线现状提出了各关节设备信息集成和数据采集的实现方法。使用open62541建立了OPC UA Sever,采用可变数据源的方法,将服务器绑定到数据源。最后,设计了各关键设备数据采集统一接口,测试了数据采集统一接口的功能。结果显示:所提数据采集方法可以实现各类异构生产设备的信息集成以及互联,在解决纺织自动化生产线信息孤岛问题上具有可行性。
文摘针对传统OPC服务器基于COM/DCOM组件技术并不是依赖于WINDOWS平台,并且在网络传输数据以及在安全性等方面存在的一些缺陷的问题,提出了OPC UA(Object Linking and Embedding for Process Control Unified Architecture,统一架构)标准。通过OPC UA客户端使用服务完成查找服务器、与服务器建立连接、浏览OPC UA服务器地址空间、订阅监视变量节点实时数据及展现实时数据变量曲线图等任务。重点是通过对模拟量类型的订阅变量进行采集并用实时曲线图显示,最终实现OPC UA客户端实时曲线图。
基金Supported by the Project of Knowledge Innovation Program of the Chinese Academy of Sciences under Grant No. KJCX2.YW.W10Sistema Nacional de Investigadores+8 种基金CONACyT grant 46614-Fthe University of Adelaide and the Australian Research Council through Grant No. FL0992247Coordinación de la Investigación Científica (UMSNH) under Grant 4.10the U. S. Department of Energy, Office of Nuclear Physics, Grant No. DE-AC02-06CH11357Fundao de Amparo Pesquisa do Estado de So Paulo, Grant Nos. 2009/51296-1 and 2010/05772-3the National Natural Science Foundation of China under Grant Nos. 10425521, 10675002, 10705002, 10935001 and 11075052the Major State Basic Research Development Program, under Grant No. G2007CB815000Forschungszentrum Jülich GmbHthe U. S.National Science Foundation under Grant No. PHY-0903991, in conjunction with a CONACyT Mexico-USA Collaboration Grant
文摘We survey contemporary studies of hadrons and strongly interacting quarks using QCD's Dyson-Schwinger equations, addressing the following aspects: confinement and dynamical chiral symmetry breaking; the hadron spectrum; hadron elastic and transition form factors, from small-to large-Q2; parton distribution functions; the physics of hadrons containing one or more heavy quarks; and properties of the quark gluon plasma.
