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2008 IEEE International Workshop on Factory Communication Systems最新文献

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Mapping of smart field device profiles to web services 将智能现场设备配置文件映射到web服务
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638733
C. Diedrich, M. Muhlhause, M. Riedl, T. Bangemann
{"title":"Mapping of smart field device profiles to web services","authors":"C. Diedrich, M. Muhlhause, M. Riedl, T. Bangemann","doi":"10.1109/WFCS.2008.4638733","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638733","url":null,"abstract":"A high degree of interoperability in decentralised or distributed automation systems is achieved by smart field device profiles. Profiles are very common for nearly all field bus systems for a long period of time. The basic models of these profiles are usually (1) parameter lists with the related behaviour descriptions for example state machines, (2) function block profiles or (3) object based profiles. Common for all of them is that there is a tight coupled connection between the field devices and host devices such as PLCs. Usually there is no direct connection between the field devices. Future automation systems tend to migrate to more distribution among the system components and to more loose coupled paradigm. This paradigm is used in service oriented architectures (SOA) which are mainly applied in business and IT applications. The EU IP SOCRADES intents to build a complete automation system based on SOA. In the framework of this project the mapping of existing profile models to Web services is therefore investigated. The paper presents the migration steps starting from existing model descriptions to an example of a Web service based profile.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131923177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A TDMA-based mechanism to enforce real-time behavior in WiFi networks 一种基于tdma的机制，在WiFi网络中执行实时行为
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638758
R. Moraes, F. Vasques, P. Portugal
{"title":"A TDMA-based mechanism to enforce real-time behavior in WiFi networks","authors":"R. Moraes, F. Vasques, P. Portugal","doi":"10.1109/WFCS.2008.4638758","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638758","url":null,"abstract":"In this paper, a TDMA-based mechanism is proposed for IEEE 802.11 Wireless LANs. This mechanism prioritizes real-time traffic in IEEE 802.11 networks, allowing the coexistence of standard stations with modified (real-time) stations in the same network domain. The worst-case timing analysis of the TDMA-based mechanism shows that the service interval is upper-bounded, even when the communication medium is shared with timing unconstrained stations.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126633799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Synchronization performance of the Precision Time Protocol: Effect of clock frequency drift on the line delay computation 精确时间协议的同步性能:时钟频率漂移对线延迟计算的影响
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638745
R. Scheiterer, D. Obradovic, Chongning Na, G. Steindl, Franz-Josef Goetz
{"title":"Synchronization performance of the Precision Time Protocol: Effect of clock frequency drift on the line delay computation","authors":"R. Scheiterer, D. Obradovic, Chongning Na, G. Steindl, Franz-Josef Goetz","doi":"10.1109/WFCS.2008.4638745","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638745","url":null,"abstract":"The Precision Time Protocol (PTP) of the IEEE 1588 standard relies on two processes: the timing propagation process and the line delay estimation process. It is important to study the factors that affect the quality of these synchronization sub-processes, in order to expand the limit on the number of slaves synchronizable within a given synchronization precision. This short work-in-progress paper analytically studies the sensitivity of the line delay computation to linear clock frequency drift.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114417874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Fault tolerant multipath routing with overlap-aware path selection and dynamic packet distribution on overlay network for real-time streaming applications 基于重叠感知的路径选择和动态分组的多径容错路由
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638724
T. Ishida, T. Yakoh
{"title":"Fault tolerant multipath routing with overlap-aware path selection and dynamic packet distribution on overlay network for real-time streaming applications","authors":"T. Ishida, T. Yakoh","doi":"10.1109/WFCS.2008.4638724","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638724","url":null,"abstract":"In this paper we propose overlap-aware path selection and dynamic packet distribution due to failure detection in multipath routing overlay network. Real-time communications that utilize UDP do not ensure reliability for realizing fast transmission. Therefore congestion or failure in a network deteriorates the quality of service significantly. The proposed method seeks an alternate path that hardly overlaps an IP path so as to improve its reliability. The proposed method also detects congestion or failure by differential of packet loss rate and apportion packets to the IP path and the alternate path dynamically. Evaluation on PlanetLab shows the proposed method avoids congestion Consequently the influence of congestion and failure lessens and the proposed multipath routing improves the reliability which can be used for real-time communications.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129708181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A comparison of WirelessHART and ZigBee for industrial applications 无线shart和ZigBee在工业应用中的比较
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638746
T. Lennvall, S. Svensson, F. Hekland
{"title":"A comparison of WirelessHART and ZigBee for industrial applications","authors":"T. Lennvall, S. Svensson, F. Hekland","doi":"10.1109/WFCS.2008.4638746","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638746","url":null,"abstract":"In this paper we present reasons why ZigBee is not considered suitable for use in most industrial applications, which was also motivation for the development of a new wireless communication standard tailored to the industrial needs: WirelessHART. We also give a short presentation of the design features that makes WirelessHART more suitable for industrial applications and requirements.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121294521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 190
PRIOREL-COMB: A protocol framework supporting relaying and packet combining forwireless industrial networking PRIOREL-COMB:支持无线工业网络中继和分组组合的协议框架
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638708
Andreas Willig, Elisabeth Uhlemann
{"title":"PRIOREL-COMB: A protocol framework supporting relaying and packet combining forwireless industrial networking","authors":"Andreas Willig, Elisabeth Uhlemann","doi":"10.1109/WFCS.2008.4638708","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638708","url":null,"abstract":"The PRIOREL-COMB framework presented here integrates support for relaying and packet combining into wireless industrial networks. The selection of suitable relay nodes is made using distributed algorithms which includes different eligibility tests as well as different priority assignments. The framework improves performance in terms of probability to successfully deliver packets before their deadline and it can be implemented on top of commercial transceivers without modification of the physical layer. This class of protocols will therefore be a valuable addition to future wireless industrial communication systems.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129178253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
An approach to out-of-sequence measurements in feedback control systems 反馈控制系统中的乱序测量方法
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638704
D. Pachner, V. Havlena
{"title":"An approach to out-of-sequence measurements in feedback control systems","authors":"D. Pachner, V. Havlena","doi":"10.1109/WFCS.2008.4638704","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638704","url":null,"abstract":"Complex communication network architectures are becoming more frequent in control applications. In such networked control systems, it is often the case that information on process variables is received out-of-time-order. This paper presents a Bayesian approach to handling this out-of-sequence information problem. Such approach leads to a solution involving the joint probability density of current state and past measurements not yet received. Under linear Gaussian assumptions, the Bayesian solution reduces to an augmented state Kalman filter. Our approach augments the state dynamically based on the list of missing observations. As this solution can be time and memory consuming, two simplified implementations of the algorithm are presented.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130662540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Safe commissioning and maintenance process for a safe fieldbus 安全现场总线的安全调试和维护过程
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638718
T. Novak, P. Fischer, M. Holz, M. Kieviet, T. Tamandl
{"title":"Safe commissioning and maintenance process for a safe fieldbus","authors":"T. Novak, P. Fischer, M. Holz, M. Kieviet, T. Tamandl","doi":"10.1109/WFCS.2008.4638718","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638718","url":null,"abstract":"In the last recent years some fieldbus systems have been equipped with additional safety related features according to the international standard IEC 61508. Thus these systems can be used in new fields of application. Typically, nodes are enhanced with hardware and safety related software. Moreover it is required to specify a safe commissioning and maintenance process for the fieldbus systems outlined in this paper for LON. It has to cover all aspects during installation, operation and maintenance of a fieldbus. It includes the process of safe binding as well as the process of replacement and modification.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123947898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Wireless extension of Ethernet Powerlink networks based on the IEEE 802.11 wireless LAN 基于IEEE 802.11无线局域网的以太网Powerlink网络的无线扩展
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638726
L. Seno, Stefano Vitturi
{"title":"Wireless extension of Ethernet Powerlink networks based on the IEEE 802.11 wireless LAN","authors":"L. Seno, Stefano Vitturi","doi":"10.1109/WFCS.2008.4638726","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638726","url":null,"abstract":"Recently, two new types of communication networks have become available at the low levels of factory automation systems. Besides field buses, which have been traditionally used since long time, both real-time Ethernet (RTE) and wireless networks may now be employed. Consequently, it is envisaged that hybrid configurations using all types of the available communication systems will be even more deployed in the future. In this paper we focus, specifically, on hybrid systems which realize wireless extensions of wired networks. In detail, we address the extension of Ethernet Powerlink, a popular RTE network, by means of the IEEE 802.11 WLAN. We consider two types of extensions based on both bridge and gateway devices. After a discussion concerning the actual implementation of the extensions, we provide some performance figures obtained from both a theoretical analysis and numerical simulations.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127676424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Web-based Asset Management for heterogeneous industrial networks 异构工业网络的基于web的资产管理
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638757
S. Theurich, R. Frenzel, M. Wollschlaeger, T. Szczepanski
{"title":"Web-based Asset Management for heterogeneous industrial networks","authors":"S. Theurich, R. Frenzel, M. Wollschlaeger, T. Szczepanski","doi":"10.1109/WFCS.2008.4638757","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638757","url":null,"abstract":"Strategic aim of asset management in industrial networks is an effective administration and optimization of the usage of devices, machines and plants. The amount of complex information, which is gathered from heterogeneous information stock without significant additional expense, increases notably. At the same time, such a system has to provide a platform for scalable application functions and standard network functionality. Existing asset management tools are focused on single devices while using heterogeneous information sets. This paper describes the development of a network centered asset management system for heterogeneous industrial networks, considering the entire network to be an asset, independent of the specific industrial network.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131795937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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