Pub Date : 2013-12-16DOI: 10.1109/ICAT.2013.6684089
Ž. Jurić, S. Hanjalic, Hamza Sehovic
This paper proposes a new closed-loop frequency based method for parametric identification of Hammerstein type plants with a transport delay. The method is a generalization of Ziegler Nichols' (ZN) experiment, with relay added in the control loop. It provides a simultaneous estimation of the parametric model of the plant dynamic, value of the time delay and a point by point relationship between input and output of the nonlinear part of the plant, which need not to be symmetrical. No extra equipment is needed, except the relay and a low pass filter.
{"title":"Closed-loop frequency-based identification method for Hammerstein type plants with a transport delay using a relay feedback","authors":"Ž. Jurić, S. Hanjalic, Hamza Sehovic","doi":"10.1109/ICAT.2013.6684089","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684089","url":null,"abstract":"This paper proposes a new closed-loop frequency based method for parametric identification of Hammerstein type plants with a transport delay. The method is a generalization of Ziegler Nichols' (ZN) experiment, with relay added in the control loop. It provides a simultaneous estimation of the parametric model of the plant dynamic, value of the time delay and a point by point relationship between input and output of the nonlinear part of the plant, which need not to be symmetrical. No extra equipment is needed, except the relay and a low pass filter.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128018387","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 : 2013-12-16DOI: 10.1109/ICAT.2013.6684048
Mehdi Adda, Amel Hannech, H. Mcheick
Classical search engines rely mainly on keyword matches. More advanced search engines and information retrieval systems use personalization techniques to enhance the relevancy of the results. Those approaches assume that the current search of a user is directly related to his/her profiles and/or past navigation/search experience. However, this assumption does not hold in all cases. In this paper, we are proposing an information retrieval approach that is not making any assumption about the user. It offers a straightforward way to choose and navigate the available interpretations. Our approach relies on a navigation model that is based on a new paradigm called multi-space interpretation index and projection operations. We have derived a mathematical model of a Web information retrieval system based on the new paradigm. This concept naturally distinguishes between the different interpretation layers (each layer is a separate space). Therefore, it offers to users the flexibility to navigate the interpretation spaces in such a way that suites better their information needs.
{"title":"New web information retrieval paradigm based on a multi-space interpretation index and projection operations","authors":"Mehdi Adda, Amel Hannech, H. Mcheick","doi":"10.1109/ICAT.2013.6684048","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684048","url":null,"abstract":"Classical search engines rely mainly on keyword matches. More advanced search engines and information retrieval systems use personalization techniques to enhance the relevancy of the results. Those approaches assume that the current search of a user is directly related to his/her profiles and/or past navigation/search experience. However, this assumption does not hold in all cases. In this paper, we are proposing an information retrieval approach that is not making any assumption about the user. It offers a straightforward way to choose and navigate the available interpretations. Our approach relies on a navigation model that is based on a new paradigm called multi-space interpretation index and projection operations. We have derived a mathematical model of a Web information retrieval system based on the new paradigm. This concept naturally distinguishes between the different interpretation layers (each layer is a separate space). Therefore, it offers to users the flexibility to navigate the interpretation spaces in such a way that suites better their information needs.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133886075","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 : 2013-12-16DOI: 10.1109/ICAT.2013.6684087
K. Gerlach-Hahn, C. Dahmen, B. Misgeld
In this article, the systematic development of a serial elastic actuator for human assistance is presented. First, requirements for the actuator are deduced from the specific application, as part of an assistance robots for partially paralyzed patients. A test bench was developed to evaluate the serial elastic actuator under various conditions and to produce reference sensor data. The device was tested in four different scenarios, ranging from stiff fixation of the output to interaction with the knee joint of an active or passive human test subject. A variable system inherent friction was identified and the potential of this (usually undesired) characteristic is discussed for the special case of human assistance.
{"title":"Design and evaluation of a serial elastic actuator for human assistance","authors":"K. Gerlach-Hahn, C. Dahmen, B. Misgeld","doi":"10.1109/ICAT.2013.6684087","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684087","url":null,"abstract":"In this article, the systematic development of a serial elastic actuator for human assistance is presented. First, requirements for the actuator are deduced from the specific application, as part of an assistance robots for partially paralyzed patients. A test bench was developed to evaluate the serial elastic actuator under various conditions and to produce reference sensor data. The device was tested in four different scenarios, ranging from stiff fixation of the output to interaction with the knee joint of an active or passive human test subject. A variable system inherent friction was identified and the potential of this (usually undesired) characteristic is discussed for the special case of human assistance.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122127489","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 : 2013-12-16DOI: 10.1109/ICAT.2013.6684075
Saeid Ghaderi, N. Vasegh, R. Ghandehari
Wind energy is not constant and because of nonlinear effect of wind speed in output power of windmill, the generated power of wind turbine generators (WTGs) fluctuates. In order to reduce fluctuation, different methods are available. This paper presents a control strategy based on fuzzy modeling in different wind speeds to control frequency and together with a hybrid system that controls voltage, can improve power quality of a wind-hybrid power generation system. The simulation results show the effectiveness of the proposed method.
{"title":"Fuzzy pitch angle control of wind hybrid turbine: To power quality improvement","authors":"Saeid Ghaderi, N. Vasegh, R. Ghandehari","doi":"10.1109/ICAT.2013.6684075","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684075","url":null,"abstract":"Wind energy is not constant and because of nonlinear effect of wind speed in output power of windmill, the generated power of wind turbine generators (WTGs) fluctuates. In order to reduce fluctuation, different methods are available. This paper presents a control strategy based on fuzzy modeling in different wind speeds to control frequency and together with a hybrid system that controls voltage, can improve power quality of a wind-hybrid power generation system. The simulation results show the effectiveness of the proposed method.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124353722","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 : 2013-12-16DOI: 10.1109/ICAT.2013.6684086
Dinko Osmankovic, J. Velagić
This paper presents a classical approach to model reference adaptive control for trajectory tracking problem. Gradient based or MIT rule adaptation technique was applied to the well known trajectory tracking controller and the mathematical model of that adaptation is presented. The proposed solution is compared to the controller without adaptation and to the feedback linearisation based controller. In both simulation and experimental environments the effectiveness of the proposed adaptive controller is shown and its use justified.
{"title":"Gradient based adaptive trajectory tracking control for mobile robots","authors":"Dinko Osmankovic, J. Velagić","doi":"10.1109/ICAT.2013.6684086","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684086","url":null,"abstract":"This paper presents a classical approach to model reference adaptive control for trajectory tracking problem. Gradient based or MIT rule adaptation technique was applied to the well known trajectory tracking controller and the mathematical model of that adaptation is presented. The proposed solution is compared to the controller without adaptation and to the feedback linearisation based controller. In both simulation and experimental environments the effectiveness of the proposed adaptive controller is shown and its use justified.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121571648","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 : 2013-11-15DOI: 10.1109/ICAT.2013.6684081
N. Bajçinca
The classical eigenvalue assignment problem is revisited in this note. We derive an analytic expression for pole placement which represents a slight generalization of the celebrated Bass-Gura and Ackermann formulae, and also is closely related to the modal procedure of Simon and Mitter.
{"title":"On pole placement and invariant subspaces","authors":"N. Bajçinca","doi":"10.1109/ICAT.2013.6684081","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684081","url":null,"abstract":"The classical eigenvalue assignment problem is revisited in this note. We derive an analytic expression for pole placement which represents a slight generalization of the celebrated Bass-Gura and Ackermann formulae, and also is closely related to the modal procedure of Simon and Mitter.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123078547","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 : 2013-10-01DOI: 10.1109/ICAT.2013.6684070
N. Bajçinca
We propose an approach to fault-tolerant feedback global chassis control employing a reconfiguration of distributed optimization scheme in the feedforward path according to a precompiled bank of faulty scenarios and corresponding switching topologies of the network of computation and actuation nodes of a single-wheel electrical car powertrain. This intuitive idea is underpinned by the functional redundancy provided by the distribution of the overall global chassis computational control task amongst a set of collaborating processors and the associated actuation in implementing a prespecified maneuver. Our work represents a step towards novel cyber-physical design approaches in realizing complex behavior of vehicle dynamics.
{"title":"Fault-tolerant distributed feedback global chassis control","authors":"N. Bajçinca","doi":"10.1109/ICAT.2013.6684070","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684070","url":null,"abstract":"We propose an approach to fault-tolerant feedback global chassis control employing a reconfiguration of distributed optimization scheme in the feedforward path according to a precompiled bank of faulty scenarios and corresponding switching topologies of the network of computation and actuation nodes of a single-wheel electrical car powertrain. This intuitive idea is underpinned by the functional redundancy provided by the distribution of the overall global chassis computational control task amongst a set of collaborating processors and the associated actuation in implementing a prespecified maneuver. Our work represents a step towards novel cyber-physical design approaches in realizing complex behavior of vehicle dynamics.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"761 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116128920","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 : 2013-10-01DOI: 10.1109/ICAT.2013.6684044
S. Omanovic, E. Buza
Agile maintenance is the best choice if you want to keep step with your customer needs. It is a result of trying to respond to customer change requests with the high efficiency. High involvement of the customer in the maintenance process is good but also can have negative effects. Change in the behavior of the customer can influence the execution of the change management process or cause the change of the release plan, etc. All that can destabilize normal maintenance velocity and lead to a chaotic relationship with the customer, if not controlled or prevented. This paper describes problems in agile maintenance caused mostly by the change of the customer behavior at the beginning of the economic crisis. It also presents results of the analysis of these problems and recommendations how to identify them and how to prevent them.
{"title":"Importance of stable velocity in agile maintenance","authors":"S. Omanovic, E. Buza","doi":"10.1109/ICAT.2013.6684044","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684044","url":null,"abstract":"Agile maintenance is the best choice if you want to keep step with your customer needs. It is a result of trying to respond to customer change requests with the high efficiency. High involvement of the customer in the maintenance process is good but also can have negative effects. Change in the behavior of the customer can influence the execution of the change management process or cause the change of the release plan, etc. All that can destabilize normal maintenance velocity and lead to a chaotic relationship with the customer, if not controlled or prevented. This paper describes problems in agile maintenance caused mostly by the change of the customer behavior at the beginning of the economic crisis. It also presents results of the analysis of these problems and recommendations how to identify them and how to prevent them.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122535811","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 : 2013-10-01DOI: 10.1109/ICAT.2013.6684061
O. Krini, J. Börcsök
The objective is the new development of a Software-Tool, known as FRCas, to calculate the failure rates from various components. This Software-Tool should offer the User the opportunity to determine the failure rate for various components on the basis of various Standards of Siemens SN 29500, Military Handbok MIL-HNDB, SINTEF, and CENELEC. The user should be able to obtain results with this Tool without previous knowledge of the details of standard. A further objective is the integration of Program Package "OrCAD" into the developed Software-Tool, therefore to determine the failure rates of individual components that are in the OrCAD developed electronic circuits.
{"title":"Tool to derive and calculate safety parameter","authors":"O. Krini, J. Börcsök","doi":"10.1109/ICAT.2013.6684061","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684061","url":null,"abstract":"The objective is the new development of a Software-Tool, known as FRCas, to calculate the failure rates from various components. This Software-Tool should offer the User the opportunity to determine the failure rate for various components on the basis of various Standards of Siemens SN 29500, Military Handbok MIL-HNDB, SINTEF, and CENELEC. The user should be able to obtain results with this Tool without previous knowledge of the details of standard. A further objective is the integration of Program Package \"OrCAD\" into the developed Software-Tool, therefore to determine the failure rates of individual components that are in the OrCAD developed electronic circuits.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116741694","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 : 2013-10-01DOI: 10.1109/ICAT.2013.6684077
K. Delic, J. A. Riley
During the past 70+ years of research and development in the domain of Artificial Intelligence (AI) we observe three principal, historical waves: embryonic, embedded and embodied AI. As the first two waves have demonstrated huge potential to seed new technologies and provide tangible business results, we describe likely developments of embodied AI in the next 25-35 years. We postulate that the famous Turing Test was a noble goal for AI scientists, making key, historical inroads - while we believe that Biological Systems Intelligence and the Insect/Swarm Intelligence analogy/mimicry, though largely disregarded, represents the key to further developments. We describe briefly the key lines of past and ongoing research, and outline likely future developments in this remarkable field.
{"title":"Current and future trends in AI","authors":"K. Delic, J. A. Riley","doi":"10.1109/ICAT.2013.6684077","DOIUrl":"https://doi.org/10.1109/ICAT.2013.6684077","url":null,"abstract":"During the past 70+ years of research and development in the domain of Artificial Intelligence (AI) we observe three principal, historical waves: embryonic, embedded and embodied AI. As the first two waves have demonstrated huge potential to seed new technologies and provide tangible business results, we describe likely developments of embodied AI in the next 25-35 years. We postulate that the famous Turing Test was a noble goal for AI scientists, making key, historical inroads - while we believe that Biological Systems Intelligence and the Insect/Swarm Intelligence analogy/mimicry, though largely disregarded, represents the key to further developments. We describe briefly the key lines of past and ongoing research, and outline likely future developments in this remarkable field.","PeriodicalId":348701,"journal":{"name":"2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT)","volume":"58 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114089322","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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