Pub Date : 2013-05-23DOI: 10.1109/SACI.2013.6608952
C. Mnerie, S. Preitl, Virgil-Florin Duma
The galvanometer-based scanners (GS) are optomechatronic devices with a wide range of applications, from industrial to biomedical imaging. They are driven with periodical and time variable signals - especially sawtooth, triangular, sine wave or signals with special variations. We approach in this paper the rejection of the effect of disturbances in order to improve the tracking performances of the GS. The control solution proposed in the paper is based on the extension of the existing control structure with an additional loop, with an additional controller PID-Ll type, which will ensure better speed response and good immunity to constant disturbances which can affect the servo system.
{"title":"Performance enhancement of galvanometer scanners using extended control structures","authors":"C. Mnerie, S. Preitl, Virgil-Florin Duma","doi":"10.1109/SACI.2013.6608952","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608952","url":null,"abstract":"The galvanometer-based scanners (GS) are optomechatronic devices with a wide range of applications, from industrial to biomedical imaging. They are driven with periodical and time variable signals - especially sawtooth, triangular, sine wave or signals with special variations. We approach in this paper the rejection of the effect of disturbances in order to improve the tracking performances of the GS. The control solution proposed in the paper is based on the extension of the existing control structure with an additional loop, with an additional controller PID-Ll type, which will ensure better speed response and good immunity to constant disturbances which can affect the servo system.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121840128","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608988
M. Sarnovský, Z. Ulbrik
This paper provides an overview of our research activities aimed on efficient use of distributed computing concepts for text-mining tasks. Work presented within this paper describes the GHSOM (Growing Hierarchical Self-Organizing Maps) algorithm for clustering of text documents and proposes the design and implementation of distributed version of this approach. Proposed implementation is based on JBOWL framework as a base for text mining. For distribution we used MapReduce paradigm implemented within the GridGain framework, which was used as a cloud application platform. Experiments were performed on standard Reuters dataset and for testing purposes we decided to use a simple private cloud infrastructure.
{"title":"Cloud-based clustering of text documents using the GHSOM algorithm on the GridGain platform","authors":"M. Sarnovský, Z. Ulbrik","doi":"10.1109/SACI.2013.6608988","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608988","url":null,"abstract":"This paper provides an overview of our research activities aimed on efficient use of distributed computing concepts for text-mining tasks. Work presented within this paper describes the GHSOM (Growing Hierarchical Self-Organizing Maps) algorithm for clustering of text documents and proposes the design and implementation of distributed version of this approach. Proposed implementation is based on JBOWL framework as a base for text mining. For distribution we used MapReduce paradigm implemented within the GridGain framework, which was used as a cloud application platform. Experiments were performed on standard Reuters dataset and for testing purposes we decided to use a simple private cloud infrastructure.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132093502","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608965
I. Fekete, I. Faragó
In this paper we investigate the N-stability notion in an abstract Banach space setting. The main result is that we verify the N-stability of the implicit difference method for the periodic initial-value reaction-diffusion problem.
{"title":"A stability approach for reaction-diffusion problems","authors":"I. Fekete, I. Faragó","doi":"10.1109/SACI.2013.6608965","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608965","url":null,"abstract":"In this paper we investigate the N-stability notion in an abstract Banach space setting. The main result is that we verify the N-stability of the implicit difference method for the periodic initial-value reaction-diffusion problem.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126743297","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 : 2013-05-23DOI: 10.1109/SACI.2013.6608953
Amélie Chevalier, C. Copot, S. Cristescu, C. Ionescu, R. Keyser
A bottleneck on a highway is a daily occurring phenomenon. Everyday car accidents, long queues and stop-and-go waves are introduced by the driver's behavior. In this work, an effective control algorithm for emulating a bottleneck situation on a highway is presented using a set of mobile robots that can be used to educate young control engineers. We use a combination of i) an in-line leader-follower formation and ii) a formation with two followers for one leader i.e. a triangular formation. Both formations are implemented using distance and angle measurements from image processing algorithms and speed measurements from optical encoders. A cascade PI-P controller is used to stabilize the system. The challenge of the current implementation stands in the fact that there is no communication between the robots.
{"title":"Emulation of a highway bottleneck using leader-follower formation control","authors":"Amélie Chevalier, C. Copot, S. Cristescu, C. Ionescu, R. Keyser","doi":"10.1109/SACI.2013.6608953","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608953","url":null,"abstract":"A bottleneck on a highway is a daily occurring phenomenon. Everyday car accidents, long queues and stop-and-go waves are introduced by the driver's behavior. In this work, an effective control algorithm for emulating a bottleneck situation on a highway is presented using a set of mobile robots that can be used to educate young control engineers. We use a combination of i) an in-line leader-follower formation and ii) a formation with two followers for one leader i.e. a triangular formation. Both formations are implemented using distance and angle measurements from image processing algorithms and speed measurements from optical encoders. A cascade PI-P controller is used to stabilize the system. The challenge of the current implementation stands in the fact that there is no communication between the robots.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133001023","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 : 2013-05-01DOI: 10.1109/SACI.2013.6609006
F. Solomonesc, C. Barbulescu, S. Kilyeni, O. Pop, Petru Dan Cristian
The paper is focusing on transmission network expansion planning (TNEP) problem solved using artificial intelligence techniques. It is divided into two parts. The 1st part is dedicated to the particle swarm optimization (PSO) and genetic algorithm (GA) concepts and mechanisms. The mathematical models and the associated software tool are also presented. Practical considerations are discussed. The 2nd part is focusing on case studies. 13 buses test power system, developed by the authors and IEEE 24 RTS have been used. The research work is going to be used in case of the Romanian power system (over 1000 buses).
{"title":"Artificial intelligence based TNEP. Part 2: Case studies","authors":"F. Solomonesc, C. Barbulescu, S. Kilyeni, O. Pop, Petru Dan Cristian","doi":"10.1109/SACI.2013.6609006","DOIUrl":"https://doi.org/10.1109/SACI.2013.6609006","url":null,"abstract":"The paper is focusing on transmission network expansion planning (TNEP) problem solved using artificial intelligence techniques. It is divided into two parts. The 1st part is dedicated to the particle swarm optimization (PSO) and genetic algorithm (GA) concepts and mechanisms. The mathematical models and the associated software tool are also presented. Practical considerations are discussed. The 2nd part is focusing on case studies. 13 buses test power system, developed by the authors and IEEE 24 RTS have been used. The research work is going to be used in case of the Romanian power system (over 1000 buses).","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130089423","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 : 2012-03-13DOI: 10.1109/SACI.2013.6608941
Á. Baricz, S. András, J. Fodor
In this paper our aim is to use some tight lower and upper bounds for the differential quaternary phase shift keying transmission bit error rate in order to deduce accurate approximations for the bit error rate by improving the known results in the literature. The computation of our new approximate expressions are significantly simpler than that of the exact expression.
{"title":"New approximations for DQPSK transmission bit error rate","authors":"Á. Baricz, S. András, J. Fodor","doi":"10.1109/SACI.2013.6608941","DOIUrl":"https://doi.org/10.1109/SACI.2013.6608941","url":null,"abstract":"In this paper our aim is to use some tight lower and upper bounds for the differential quaternary phase shift keying transmission bit error rate in order to deduce accurate approximations for the bit error rate by improving the known results in the literature. The computation of our new approximate expressions are significantly simpler than that of the exact expression.","PeriodicalId":304729,"journal":{"name":"2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128841709","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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