Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355246
F. Hnaien, A. Dolgui
A multilevel assembly system with one type of finished product and several types of components is considered. The component lead times for components at each period are independent random variables, and the demand of finished product per period is constant. Finished products should be delivered by the end of each period. Otherwise a backlogging cost is incurred. Components necessary to assemble the same semi-finished product that are delivered in advance will cause holding cost. The objective is to find the optimal release dates (safety lead times which is measured in number of periods) for the components in order to minimize the total expected costs composed of the finished product backlogging cost and the component holding cost. We propose a model that gives the optimal release dates values for the components.
{"title":"A Supply Planning Model for Multilevel Assembly Systems Under Random Lead Times","authors":"F. Hnaien, A. Dolgui","doi":"10.1109/ETFA.2006.355246","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355246","url":null,"abstract":"A multilevel assembly system with one type of finished product and several types of components is considered. The component lead times for components at each period are independent random variables, and the demand of finished product per period is constant. Finished products should be delivered by the end of each period. Otherwise a backlogging cost is incurred. Components necessary to assemble the same semi-finished product that are delivered in advance will cause holding cost. The objective is to find the optimal release dates (safety lead times which is measured in number of periods) for the components in order to minimize the total expected costs composed of the finished product backlogging cost and the component holding cost. We propose a model that gives the optimal release dates values for the components.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132353950","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355357
Jackson Francomme, Gilles Mercier, T. Val
We propose the implementation of a wireless sensor network applied to automation control applications, when the guarantee of a delay delivery for the complete reception of messages is necessary. The 802.15.4 wireless standard network offers possibilities of management of the bandwidth. This paper presents the method to guarantee the deadline transmission of periodic messages. For external messages (crossing the network from clusters to its destination), this average latency is used as a parameter of the routing protocol decision balance between energy saving and delay transmission. In this last case, a QoS method all over the network has to be installed to maintain a bounded end to end delay transmission. This work is still in progress. A specific Matlab simulator has been developed, principles of this routing method are mentioned at the end of this paper
{"title":"A simple method for guaranteed deadline of periodic messages in 802.15.4 cluster cells for control automation applications","authors":"Jackson Francomme, Gilles Mercier, T. Val","doi":"10.1109/ETFA.2006.355357","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355357","url":null,"abstract":"We propose the implementation of a wireless sensor network applied to automation control applications, when the guarantee of a delay delivery for the complete reception of messages is necessary. The 802.15.4 wireless standard network offers possibilities of management of the bandwidth. This paper presents the method to guarantee the deadline transmission of periodic messages. For external messages (crossing the network from clusters to its destination), this average latency is used as a parameter of the routing protocol decision balance between energy saving and delay transmission. In this last case, a QoS method all over the network has to be installed to maintain a bounded end to end delay transmission. This work is still in progress. A specific Matlab simulator has been developed, principles of this routing method are mentioned at the end of this paper","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133892223","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355453
A. Lobov, C. Popescu, J. Lastra
System engineering process supported by the formal methods should improve the quality of the developed product. Here, a single step in formalization of industrial programming is highlighted together with its place in the whole framework for formal validation of industrial systems. This paper describes an algorithm of translating statement list language to the timed net condition/event systems that forms a controller model. Thus controller models can be generated for the industrial automated systems implemented in statement list.
{"title":"An Algorithm for Siemens STL representation in TNCES","authors":"A. Lobov, C. Popescu, J. Lastra","doi":"10.1109/ETFA.2006.355453","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355453","url":null,"abstract":"System engineering process supported by the formal methods should improve the quality of the developed product. Here, a single step in formalization of industrial programming is highlighted together with its place in the whole framework for formal validation of industrial systems. This paper describes an algorithm of translating statement list language to the timed net condition/event systems that forms a controller model. Thus controller models can be generated for the industrial automated systems implemented in statement list.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130296253","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355350
J. Pomares, P. Gil, G. J. García, Fernando Torres Medina
This paper describes a method to detect changes in given surfaces tracked by the robot end-effector. To do so, first an approach to combine visual and force information is described. By filtering the interaction forces, a parameter which provides the probability of a change in the tracking surface is obtained. In order to obtain a more accurate determination of the change in the surface, information from a laser located at the robot end-effector is also employed. Therefore, a robust method for detecting surface discontinuities which employs force and visual information jointly with structured light is presented
{"title":"Visual - Force Control and Structured Light Fusion to Improve Recognition of Discontinuities in Surfaces","authors":"J. Pomares, P. Gil, G. J. García, Fernando Torres Medina","doi":"10.1109/ETFA.2006.355350","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355350","url":null,"abstract":"This paper describes a method to detect changes in given surfaces tracked by the robot end-effector. To do so, first an approach to combine visual and force information is described. By filtering the interaction forces, a parameter which provides the probability of a change in the tracking surface is obtained. In order to obtain a more accurate determination of the change in the surface, information from a laser located at the robot end-effector is also employed. Therefore, a robust method for detecting surface discontinuities which employs force and visual information jointly with structured light is presented","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115063239","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355232
S. Lee
This article presents a novel method for modeling swept volumes of milling tools that undergoes a translational motion by extending the basic idea behind Gauss maps. The main idea is that it 1) transforms the tool shape and the moving direction of the tool from Euclidean space into an unit sphere by means of Gauss function and gets the spherical domains which are called Tool map (T-Map) and Contact map (C-Map) respectively 2) finds an intersection region of T-Map with C-Map and 3) transforms intersected region inversely into Euclidean space to get the envelope profile of the tool at prescribed instant time. The proposed approach is intuitive to understand the cutting behavior of generalized tool shape, simple to implement the swept volume and extendible up to a piecewise C -continuous convex set following translational motion.
{"title":"An Approach to Swept Volume Generation for NC Machining using Gauss Map","authors":"S. Lee","doi":"10.1109/ETFA.2006.355232","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355232","url":null,"abstract":"This article presents a novel method for modeling swept volumes of milling tools that undergoes a translational motion by extending the basic idea behind Gauss maps. The main idea is that it 1) transforms the tool shape and the moving direction of the tool from Euclidean space into an unit sphere by means of Gauss function and gets the spherical domains which are called Tool map (T-Map) and Contact map (C-Map) respectively 2) finds an intersection region of T-Map with C-Map and 3) transforms intersected region inversely into Euclidean space to get the envelope profile of the tool at prescribed instant time. The proposed approach is intuitive to understand the cutting behavior of generalized tool shape, simple to implement the swept volume and extendible up to a piecewise C -continuous convex set following translational motion.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115667132","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355359
C. Antonopoulos, A. Athanasopoulos, S. Koubias
This paper aims to study and analyze lost packet tendencies for ad hoc wireless networks. Lost packets greatly influence all performance aspects of such a network. Moreover, lost or drop packets are directly involved in many active research fields concerning ad hoc network nowadays. Accordingly, investigating the various kinds of packets dropped more frequently in conjunction with critical network parameters, can result in very usefully conclusions. These conclusions can give new insights in designing new protocols and more importantly in cross-layer designs in order to enhance the performance of the whole network.
{"title":"A simulation study on dropping tendencies of an ad-hoc wireless network","authors":"C. Antonopoulos, A. Athanasopoulos, S. Koubias","doi":"10.1109/ETFA.2006.355359","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355359","url":null,"abstract":"This paper aims to study and analyze lost packet tendencies for ad hoc wireless networks. Lost packets greatly influence all performance aspects of such a network. Moreover, lost or drop packets are directly involved in many active research fields concerning ad hoc network nowadays. Accordingly, investigating the various kinds of packets dropped more frequently in conjunction with critical network parameters, can result in very usefully conclusions. These conclusions can give new insights in designing new protocols and more importantly in cross-layer designs in order to enhance the performance of the whole network.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114318141","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355216
C. Insaurralde, M. A. Seminario, J. Jiménez, J. Girón-Sierra
A current methodology for modeling distributed control systems (DCSs) is the standard IEC 61499. This technology is mainly applied in modern manufacturing industrial automation but it has begun to extend to other application areas. This paper proposes, in the framework of a European Research Project, a widespread use of IEC 61499, modeling an avionic distributed fuel control system (ADFCS) with smart components. The main Project target is to change the actual centralized system architecture to a full distributed one. This new system architecture includes fieldbuses and intelligence on the system components which are automata with holonic behavior. According to these new fuel system characteristics, IEC 61499 is perfectly suitable to develop it and at a time, it is interesting to spread the development of this kind of system. The paper objective is to propose a graphic modeling representation methodology to create an ADFCS with smart components. Thus, the generalization and systematization of ADFCS developments is achieved. This paper presents the main ideas of the new distributed avionic system and the control modeling of this system with IEC 61499 function blocks (FBs). Also, a particular example of ADFCS is presented; a helicopter fuel system.
{"title":"IEC 61499 Model for Avionics Distributed Fuel Systems with Networked Embedded Holonic Controllers","authors":"C. Insaurralde, M. A. Seminario, J. Jiménez, J. Girón-Sierra","doi":"10.1109/ETFA.2006.355216","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355216","url":null,"abstract":"A current methodology for modeling distributed control systems (DCSs) is the standard IEC 61499. This technology is mainly applied in modern manufacturing industrial automation but it has begun to extend to other application areas. This paper proposes, in the framework of a European Research Project, a widespread use of IEC 61499, modeling an avionic distributed fuel control system (ADFCS) with smart components. The main Project target is to change the actual centralized system architecture to a full distributed one. This new system architecture includes fieldbuses and intelligence on the system components which are automata with holonic behavior. According to these new fuel system characteristics, IEC 61499 is perfectly suitable to develop it and at a time, it is interesting to spread the development of this kind of system. The paper objective is to propose a graphic modeling representation methodology to create an ADFCS with smart components. Thus, the generalization and systematization of ADFCS developments is achieved. This paper presents the main ideas of the new distributed avionic system and the control modeling of this system with IEC 61499 function blocks (FBs). Also, a particular example of ADFCS is presented; a helicopter fuel system.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114550415","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355423
S. Robertz, D. Henriksson, A. Cervin
This paper presents the incorporation of an auto-tuning real-time garbage collector into a feedback-based on-line scheduling system. The studied feedback scheduler is designed to dynamically adjust the sampling periods of a set of controller tasks in order to maximize the overall control performance. In the suggested approach, the memory management overhead is made explicit and taken into account by the feedback scheduler when scheduling the tasks. It is also described how priorities for memory allocations can be used to control the allocation rates of the application threads in order to optimize the trade-off between memory and CPU time usage. A case study, comparing theoretical analysis and simulated results support the feasibility of the approach.
{"title":"Memory-Aware Feedback Scheduling of Control Tasks","authors":"S. Robertz, D. Henriksson, A. Cervin","doi":"10.1109/ETFA.2006.355423","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355423","url":null,"abstract":"This paper presents the incorporation of an auto-tuning real-time garbage collector into a feedback-based on-line scheduling system. The studied feedback scheduler is designed to dynamically adjust the sampling periods of a set of controller tasks in order to maximize the overall control performance. In the suggested approach, the memory management overhead is made explicit and taken into account by the feedback scheduler when scheduling the tasks. It is also described how priorities for memory allocations can be used to control the allocation rates of the application threads in order to optimize the trade-off between memory and CPU time usage. A case study, comparing theoretical analysis and simulated results support the feasibility of the approach.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114204333","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355455
O. J. L. Orozco, J. Lastra
Continuous market changes has leading to a new manufacturing paradigms where the common denominator is the rapid changeover of hardware components for the adjustment of production capacity and functionality. Hardware components for final solutions have been receiving more attention than software components for control. Function blocks from the standard IEC 61499 could offer a viable solution for the encapsulation of algorithms for further distribution. Nevertheless, still are missing IT solutions for automatic discover and composition of function block applications. This works describes one of the stages that will allow searching and therefore automatic discovery of function blocks and composition of applications.
{"title":"Adding Function Blocks of IEC 61499 Semantic Description to Automation Objects","authors":"O. J. L. Orozco, J. Lastra","doi":"10.1109/ETFA.2006.355455","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355455","url":null,"abstract":"Continuous market changes has leading to a new manufacturing paradigms where the common denominator is the rapid changeover of hardware components for the adjustment of production capacity and functionality. Hardware components for final solutions have been receiving more attention than software components for control. Function blocks from the standard IEC 61499 could offer a viable solution for the encapsulation of algorithms for further distribution. Nevertheless, still are missing IT solutions for automatic discover and composition of function block applications. This works describes one of the stages that will allow searching and therefore automatic discovery of function blocks and composition of applications.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"28 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123568719","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}
Pub Date : 2006-09-01DOI: 10.1109/ETFA.2006.355254
G. Neugschwandtner
High configuration cost hampers the adoption of powerful home automation solutions. Automating the necessary configuration steps will alleviate this problem. The article defines the task of "plug and play" in the context of a distributed control system built from smart sensors and actuators and the network management services involved. It gives an overview of existing approaches and outlines the requirements for a comprehensive plug and play solution as well as work-in-progress toward this goal.
{"title":"Towards Plug and Play in Home and Building Automation Networks","authors":"G. Neugschwandtner","doi":"10.1109/ETFA.2006.355254","DOIUrl":"https://doi.org/10.1109/ETFA.2006.355254","url":null,"abstract":"High configuration cost hampers the adoption of powerful home automation solutions. Automating the necessary configuration steps will alleviate this problem. The article defines the task of \"plug and play\" in the context of a distributed control system built from smart sensors and actuators and the network management services involved. It gives an overview of existing approaches and outlines the requirements for a comprehensive plug and play solution as well as work-in-progress toward this goal.","PeriodicalId":431393,"journal":{"name":"2006 IEEE Conference on Emerging Technologies and Factory Automation","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124710776","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}
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