Pub Date : 2009-12-04DOI: 10.1109/ICAT.2009.5348451
E. Faldella, Andrea Paoli, A. Tilli, Matteo Sartini, Daniele Guidi
In all automated manufacturing systems the design of the control system plays a key role for the achievement of the targeted performance. A valuable support is provided by industrial technologies vendors in terms of computational platforms, smart I/O devices, networking infrastructures, integrated development and run-time environments. What is still lacking is a reference framework comprising a comprehensive set of highly reusable logic control components that, focusing on cross-cutting functionalities characterizing the automation domain, may help the designers in the process of modeling and structuring their applications according to the specific needs. As a first step in this direction, the paper introduces a set of new components that abstractly model the behavior of manifold field devices commonly used within automated manufacturing systems, regardless their nature, intrinsic features and specific functional purposes. These components, called Generalized Devices, are basic logic controllers/diagnosers, which play, in our architectural multilayer organization of the overall control logic, the fundamental role of keeping cleanly distinct higher-level control policies from low-level mechanisms dealing with actuators and sensors.
{"title":"Architectural design patterns for logic control of manufacturing systems: The generalized device","authors":"E. Faldella, Andrea Paoli, A. Tilli, Matteo Sartini, Daniele Guidi","doi":"10.1109/ICAT.2009.5348451","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348451","url":null,"abstract":"In all automated manufacturing systems the design of the control system plays a key role for the achievement of the targeted performance. A valuable support is provided by industrial technologies vendors in terms of computational platforms, smart I/O devices, networking infrastructures, integrated development and run-time environments. What is still lacking is a reference framework comprising a comprehensive set of highly reusable logic control components that, focusing on cross-cutting functionalities characterizing the automation domain, may help the designers in the process of modeling and structuring their applications according to the specific needs. As a first step in this direction, the paper introduces a set of new components that abstractly model the behavior of manifold field devices commonly used within automated manufacturing systems, regardless their nature, intrinsic features and specific functional purposes. These components, called Generalized Devices, are basic logic controllers/diagnosers, which play, in our architectural multilayer organization of the overall control logic, the fundamental role of keeping cleanly distinct higher-level control policies from low-level mechanisms dealing with actuators and sensors.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128345913","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348412
Zlatan Sabic, Tarik Zaimovic
In this paper we discuss one relatively hidden but important issue related to information systems development - weak integration of performing and managing the information systems development. Among others, two causes for such weak integration are identified as important-weak integration of methodological support to the performing and managing the development, and difficulties in knowledge transfer. We show that in practice this may have some important adverse consequences for development process, such as communication problems between engineering and managerial parts of the development team, or insisting on application of inappropriate method. In this paper we argue that the methodological integration is, rather than methodological innovation, a potential solution to this problem - both processes have traditionally quite well developed methodological support but the essential interconnection of these methods is often missing. As another potential improvement primarily intended to facilitate knowledge transfer within development team, we also suggest stronger integration of knowledge that the development process managers should possess.
{"title":"Towards better integration of performing and managing the information systems development","authors":"Zlatan Sabic, Tarik Zaimovic","doi":"10.1109/ICAT.2009.5348412","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348412","url":null,"abstract":"In this paper we discuss one relatively hidden but important issue related to information systems development - weak integration of performing and managing the information systems development. Among others, two causes for such weak integration are identified as important-weak integration of methodological support to the performing and managing the development, and difficulties in knowledge transfer. We show that in practice this may have some important adverse consequences for development process, such as communication problems between engineering and managerial parts of the development team, or insisting on application of inappropriate method. In this paper we argue that the methodological integration is, rather than methodological innovation, a potential solution to this problem - both processes have traditionally quite well developed methodological support but the essential interconnection of these methods is often missing. As another potential improvement primarily intended to facilitate knowledge transfer within development team, we also suggest stronger integration of knowledge that the development process managers should possess.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132392587","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348431
Damir Demirovic, Amira Serifovic-Trbalic, Emir Skejic, N. Prljaca
In this paper we present a new approach for the smoothing of displacement field in the nonrigid accelerated demons algorithm for a discontinuities MRI image registration. accelerated demons algorithm use Gaussian smoothing filter to penalize oscillatory motion in the displacement fields during the registration, which has significant impact on registration quality. Simulated images show that Gaussian smoothing cannot properly handle these discontinuities. For this reason we introduce diffusion-like smoothing which shows promising results, and start as base for our further research on the topic of discontinuous image registration. This significant problem impedes recovering of organ motion in the case for example persons breathing cycle.
{"title":"Evaluation of the diffusion-like accelerated demons algorithm","authors":"Damir Demirovic, Amira Serifovic-Trbalic, Emir Skejic, N. Prljaca","doi":"10.1109/ICAT.2009.5348431","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348431","url":null,"abstract":"In this paper we present a new approach for the smoothing of displacement field in the nonrigid accelerated demons algorithm for a discontinuities MRI image registration. accelerated demons algorithm use Gaussian smoothing filter to penalize oscillatory motion in the displacement fields during the registration, which has significant impact on registration quality. Simulated images show that Gaussian smoothing cannot properly handle these discontinuities. For this reason we introduce diffusion-like smoothing which shows promising results, and start as base for our further research on the topic of discontinuous image registration. This significant problem impedes recovering of organ motion in the case for example persons breathing cycle.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129993852","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348433
V. Domiter, Blaz Repnik, B. Žalik, Aida Sadzak, S. Rizvić
The goal of our work is to present the application of the modern technologies and computer graphics algorithms in the field of cultural heritage reconstruction and its protection. Here we describe a methodology for digital 3D acquisition of the ldquoStecakrdquo (Stecak - plural Stecci - specific Bosnian Middle Ages tombstones), with purpose of its study and presentation. 3D laser scanning technology has been selected as the most accurate technology available for replicating a complete sampling of the very complex Stecacuteak's surface. Afterwards, three algorithms for surface reconstruction were used to reconstruct its surface from point cloud data. This paper presents the results of that reconstruction and overview of various applications of reconstructed models.
{"title":"Surface reconstruction algorithms in cultural heritage digital representation","authors":"V. Domiter, Blaz Repnik, B. Žalik, Aida Sadzak, S. Rizvić","doi":"10.1109/ICAT.2009.5348433","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348433","url":null,"abstract":"The goal of our work is to present the application of the modern technologies and computer graphics algorithms in the field of cultural heritage reconstruction and its protection. Here we describe a methodology for digital 3D acquisition of the ldquoStecakrdquo (Stecak - plural Stecci - specific Bosnian Middle Ages tombstones), with purpose of its study and presentation. 3D laser scanning technology has been selected as the most accurate technology available for replicating a complete sampling of the very complex Stecacuteak's surface. Afterwards, three algorithms for surface reconstruction were used to reconstruct its surface from point cloud data. This paper presents the results of that reconstruction and overview of various applications of reconstructed models.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129775681","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348400
H. Zildzo, A. Muharemovic, I. Turkovic, Halid Matoruga
During the malfunction in the substation, there is danger that transferred potential from the earthing system area into the outer space may occur. This problem may be a limiting factor when calculating the earthing system. Generally, a danger from too high touch voltage occurs. Also, very large potential differences are possible. Calculation of the transferred potential in substation should be given special attention. Superposition procedures are often used in literature for calculation of transferred potentials with which it is needed to solve two or more large full systems of matrixes. Direct approach to forming and solving of modified matrix of potential coefficients by applying Galerkin's procedures of weight residue in indirect method of boundary elements is considered in this paper. At the end of the article considered model was presented on example of calculation of a large steam power plant's main ground electrode.
{"title":"Numerical calculation of floating potentials for large earthing system","authors":"H. Zildzo, A. Muharemovic, I. Turkovic, Halid Matoruga","doi":"10.1109/ICAT.2009.5348400","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348400","url":null,"abstract":"During the malfunction in the substation, there is danger that transferred potential from the earthing system area into the outer space may occur. This problem may be a limiting factor when calculating the earthing system. Generally, a danger from too high touch voltage occurs. Also, very large potential differences are possible. Calculation of the transferred potential in substation should be given special attention. Superposition procedures are often used in literature for calculation of transferred potentials with which it is needed to solve two or more large full systems of matrixes. Direct approach to forming and solving of modified matrix of potential coefficients by applying Galerkin's procedures of weight residue in indirect method of boundary elements is considered in this paper. At the end of the article considered model was presented on example of calculation of a large steam power plant's main ground electrode.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121354969","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348428
Merid Ljesnjanin, J. Velagić
Market based approach (MBA) provides communication and coordination for robots in a virtual economy in which they can exchange tasks and resources for payment. Furthermore, trades are enabled via market mechanisms such as auction protocols in which an auctioneer is able to determine the robots best capable of achieving the tasks being offered. In this paper we purpose a modification of MBA for task allocation. This approach consists of auction announcement, bid valuation and submission and winner determination. Several scenarios where robots need to visit particular locations with time and range of wireless network constraints are used for approach verification. Additionally, the results obtained by this approach are compared with results from approach in Control and Coordination of Mobile Motes (CCMM).
{"title":"A market based approach for complex task allocation for wireless network based multi-robot system","authors":"Merid Ljesnjanin, J. Velagić","doi":"10.1109/ICAT.2009.5348428","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348428","url":null,"abstract":"Market based approach (MBA) provides communication and coordination for robots in a virtual economy in which they can exchange tasks and resources for payment. Furthermore, trades are enabled via market mechanisms such as auction protocols in which an auctioneer is able to determine the robots best capable of achieving the tasks being offered. In this paper we purpose a modification of MBA for task allocation. This approach consists of auction announcement, bid valuation and submission and winner determination. Several scenarios where robots need to visit particular locations with time and range of wireless network constraints are used for approach verification. Additionally, the results obtained by this approach are compared with results from approach in Control and Coordination of Mobile Motes (CCMM).","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122454695","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348419
E. Slanjankic, Haris Balta, Adil Joldic, Alsa Cvitkovic, D. Heric, E. Veledar
Complexity of data analysis in data mining often makes results difficult to interpret. This problem could be solved using various approaches. Principal Component Analysis (PCA) and Disjoint Cluster Analysis (DCA) are methods used for data reduction and summarization. In this paper, PCA and DCA were applied on dataset example containing information about students' courses and time necessary to pass related exams. The SAS software was used as a data mining tool for performing this analysis. Another approach for better interpretation is visualization of results. This means showing important attributes visually to aid informal users to interpret results.
{"title":"Data mining techniques and SAS as a tool for graphical presentation of principal components analysis and disjoint cluster analysis results","authors":"E. Slanjankic, Haris Balta, Adil Joldic, Alsa Cvitkovic, D. Heric, E. Veledar","doi":"10.1109/ICAT.2009.5348419","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348419","url":null,"abstract":"Complexity of data analysis in data mining often makes results difficult to interpret. This problem could be solved using various approaches. Principal Component Analysis (PCA) and Disjoint Cluster Analysis (DCA) are methods used for data reduction and summarization. In this paper, PCA and DCA were applied on dataset example containing information about students' courses and time necessary to pass related exams. The SAS software was used as a data mining tool for performing this analysis. Another approach for better interpretation is visualization of results. This means showing important attributes visually to aid informal users to interpret results.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122858266","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348449
P. Holub, J. Börcsök
The calculation of "Probability of Failure on Demand" (PFH) according to IEC 61508 shows for a 1oo1 and a 1oo2 system using the same initial values that - as expected - a 1oo2 system is a better safety integrity system than a 1oo1 system. This means, that a 1oo2 system has a lower probability of failure than a 1oo1 system. Comparing the same systems operating in a high demand or continuous mode of operation, there will be some cases, especially for systems with high diagnostics, where a 1oo1 system has a lower ¿Probability of Failure per Hour¿ (PFH) value than a 1oo2 system, using the PFH formulas according to IEC 61508. Using the equation according to IEC 61508, it is also possible that the PFH value is apparently better the longer the system runs either in the high mode or continuous mode of operation. Both results are irreproducible in industrial reality. Therefore, this paper will analyze first what conditions are necessary to get a hazard event when using a PFH system. Only those cases are considered in the modified PFH calculation, in which indeed a hazard event occurs. In a second step, it presents a new approach with the help of plausible arguments in order to calculate the PFH value of a PFH system considering a high diagnostic and a very low failure rate. The presented approach can also be correctly verified with mathematics using the advanced Markov model also described in this paper.
{"title":"Advanced PFH calculations for safety integrity systems with high diagnostic","authors":"P. Holub, J. Börcsök","doi":"10.1109/ICAT.2009.5348449","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348449","url":null,"abstract":"The calculation of \"Probability of Failure on Demand\" (PFH) according to IEC 61508 shows for a 1oo1 and a 1oo2 system using the same initial values that - as expected - a 1oo2 system is a better safety integrity system than a 1oo1 system. This means, that a 1oo2 system has a lower probability of failure than a 1oo1 system. Comparing the same systems operating in a high demand or continuous mode of operation, there will be some cases, especially for systems with high diagnostics, where a 1oo1 system has a lower ¿Probability of Failure per Hour¿ (PFH) value than a 1oo2 system, using the PFH formulas according to IEC 61508. Using the equation according to IEC 61508, it is also possible that the PFH value is apparently better the longer the system runs either in the high mode or continuous mode of operation. Both results are irreproducible in industrial reality. Therefore, this paper will analyze first what conditions are necessary to get a hazard event when using a PFH system. Only those cases are considered in the modified PFH calculation, in which indeed a hazard event occurs. In a second step, it presents a new approach with the help of plausible arguments in order to calculate the PFH value of a PFH system considering a high diagnostic and a very low failure rate. The presented approach can also be correctly verified with mathematics using the advanced Markov model also described in this paper.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124676567","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348402
J. Velagić, Kerim Obarcanin, Enisa Kapetanovic, S. Huseinbegović, N. Osmic
The purpose of this paper is to analyse and implement PI control for the permanent magnet DC motor. The control algorithm is realised using Siemens S7-200 programmable logic controller (PLC). The complex motor system is composed of DC motor, driver and tachogenerator. The main objective is to achieve a satisfactory time response of the system output under disturbances like death zone, nonlinearity, measurement noise and external load acting. The PI controller is designed in the programming environment on a previously identified nonlinear motor system. Then the PI controller is embedded into the S7-200 PLC. The effectiveness of this controller are tested in both simulation mode and experiments.
{"title":"Design of PLC-based PI controller for the permanent magnet DC motor under real constraints and disturbances","authors":"J. Velagić, Kerim Obarcanin, Enisa Kapetanovic, S. Huseinbegović, N. Osmic","doi":"10.1109/ICAT.2009.5348402","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348402","url":null,"abstract":"The purpose of this paper is to analyse and implement PI control for the permanent magnet DC motor. The control algorithm is realised using Siemens S7-200 programmable logic controller (PLC). The complex motor system is composed of DC motor, driver and tachogenerator. The main objective is to achieve a satisfactory time response of the system output under disturbances like death zone, nonlinearity, measurement noise and external load acting. The PI controller is designed in the programming environment on a previously identified nonlinear motor system. Then the PI controller is embedded into the S7-200 PLC. The effectiveness of this controller are tested in both simulation mode and experiments.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116367505","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 : 2009-12-04DOI: 10.1109/ICAT.2009.5348398
S. Gancev, A. Kulakov
The paper deals with the problem of faster optimal coverage of a Growing Neural Gas algorithm for random signals appearing with non-stationary distributions. A modification of the algorithm that successfully solves this problem will be presented with simulations in a 2-D environment and statistical results that will show its efficiency. A comparison with a previous solution for the same problem using so called Utility measure will be also given.
{"title":"Modified growing neural gas algorithm for faster convergence on signal distribution sudden change","authors":"S. Gancev, A. Kulakov","doi":"10.1109/ICAT.2009.5348398","DOIUrl":"https://doi.org/10.1109/ICAT.2009.5348398","url":null,"abstract":"The paper deals with the problem of faster optimal coverage of a Growing Neural Gas algorithm for random signals appearing with non-stationary distributions. A modification of the algorithm that successfully solves this problem will be presented with simulations in a 2-D environment and statistical results that will show its efficiency. A comparison with a previous solution for the same problem using so called Utility measure will be also given.","PeriodicalId":211842,"journal":{"name":"2009 XXII International Symposium on Information, Communication and Automation Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122820193","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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