Pub Date : 2011-07-25DOI: 10.1109/INDS.2011.6024815
V. Mladenov
In this paper an approach for validation of potential limit cycles of high order Sigma-Delta modulators is presented. The approach is an extension of a previous authors work and is based on a parallel decomposition of the modulator. In this representation, the general N-th order modulator is transformed into a decomposition of low order, generally complex modulators, which interact only through the quantizer function. The decomposition considered helps for easy description of the time-domain behavior of the modulator. Based on this in the previous authors work, the conditions for the existence of limit cycles in the high order modulator, for constant inputs are obtained. They are determined by the periodicity conditions for the states of the first order modulators. In this case, the state variables are uncoupled and the obtained conditions are very easy to be checked. Limit cycles correspond to periodic output sequences and in the previous work the validation conditions are also proposed by the author. Here these conditions are considered in details. They help to search the possible limit cycles with different lengths.
{"title":"A method for validation the limit cycles of high order Sigma-Delta modulators","authors":"V. Mladenov","doi":"10.1109/INDS.2011.6024815","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024815","url":null,"abstract":"In this paper an approach for validation of potential limit cycles of high order Sigma-Delta modulators is presented. The approach is an extension of a previous authors work and is based on a parallel decomposition of the modulator. In this representation, the general N-th order modulator is transformed into a decomposition of low order, generally complex modulators, which interact only through the quantizer function. The decomposition considered helps for easy description of the time-domain behavior of the modulator. Based on this in the previous authors work, the conditions for the existence of limit cycles in the high order modulator, for constant inputs are obtained. They are determined by the periodicity conditions for the states of the first order modulators. In this case, the state variables are uncoupled and the obtained conditions are very easy to be checked. Limit cycles correspond to periodic output sequences and in the previous work the validation conditions are also proposed by the author. Here these conditions are considered in details. They help to search the possible limit cycles with different lengths.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124880402","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 : 2011-07-25DOI: 10.1109/INDS.2011.6024784
V. Pham, M. Frasca, L. Fortuna, T. Anh, T. Hoang
This paper presents the experimental synchronization of multiple time delay systems which are implemented on a Field Programmable Gate Array (FPGA). The obtained results verify the correctness and the feasibility of theoretical synchronization. Moreover, the digital approach here could be applied to arbitrary multi-delay feedback systems to realize secure chaotic communication.
{"title":"Realization of synchronization of coupled multiple delay systems on FPGA platform","authors":"V. Pham, M. Frasca, L. Fortuna, T. Anh, T. Hoang","doi":"10.1109/INDS.2011.6024784","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024784","url":null,"abstract":"This paper presents the experimental synchronization of multiple time delay systems which are implemented on a Field Programmable Gate Array (FPGA). The obtained results verify the correctness and the feasibility of theoretical synchronization. Moreover, the digital approach here could be applied to arbitrary multi-delay feedback systems to realize secure chaotic communication.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116519903","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 : 2011-07-25DOI: 10.1109/INDS.2011.6024796
S. Vujević, Dino Lovrić, Tonći Modrić
In this paper a 2D numerical algorithm is presented for the computation of electric and magnetic fields of power lines. The numerical algorithm for the electric field intensity computation takes into account a short power line and approximates the conductor charge density by a constant. The numerical algorithm for magnetic flux density computation is based on the application of the Biot-Savart law. The computed results are compared to measurements taken underneath a 400 kV power line. The computed results and measurements prove to be in good agreements keeping in mind that the sag of the power line section is approximated with a horizontal straight line. Both the computed results as well as measurements confirm the fact that the electric and magnetic fields of high voltage power lines are well within the prescribed limits.
{"title":"2D computation and measurement of electric and magnetic fields of overhead electric power lines","authors":"S. Vujević, Dino Lovrić, Tonći Modrić","doi":"10.1109/INDS.2011.6024796","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024796","url":null,"abstract":"In this paper a 2D numerical algorithm is presented for the computation of electric and magnetic fields of power lines. The numerical algorithm for the electric field intensity computation takes into account a short power line and approximates the conductor charge density by a constant. The numerical algorithm for magnetic flux density computation is based on the application of the Biot-Savart law. The computed results are compared to measurements taken underneath a 400 kV power line. The computed results and measurements prove to be in good agreements keeping in mind that the sag of the power line section is approximated with a horizontal straight line. Both the computed results as well as measurements confirm the fact that the electric and magnetic fields of high voltage power lines are well within the prescribed limits.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133281049","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 : 2011-07-25DOI: 10.1109/INDS.2011.6024802
A. Kolli, A. Fasih, Fadi Al Machot, K. Kyamakya
Several intrusive and non-intrusive techniques have been proposed in the past to monitor car driver's emotions but very little light was shed on using thermal cameras for such applications. This paper details with one such system that uses a single infrared thermal camera. Such a camera was used to overcome the issues pertaining to usage of single audio/visual sensors. Fusion of the outputs with the audio/visual sensors could provide a better ADAS (Advanced Driver Assistance System). The paper also details face detection techniques in each thermogram prior to emotion recognition.
{"title":"Non-intrusive car driver's emotion recognition using thermal camera","authors":"A. Kolli, A. Fasih, Fadi Al Machot, K. Kyamakya","doi":"10.1109/INDS.2011.6024802","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024802","url":null,"abstract":"Several intrusive and non-intrusive techniques have been proposed in the past to monitor car driver's emotions but very little light was shed on using thermal cameras for such applications. This paper details with one such system that uses a single infrared thermal camera. Such a camera was used to overcome the issues pertaining to usage of single audio/visual sensors. Fusion of the outputs with the audio/visual sensors could provide a better ADAS (Advanced Driver Assistance System). The paper also details face detection techniques in each thermogram prior to emotion recognition.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131844402","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 : 2011-07-25DOI: 10.1109/INDS.2011.6024786
Julio Rodríguez, M. Hongler, Philippe Blanchard
We consider a network of N coupled limit cycle oscillators, each having a set of control parameters Λk, k = 1, …, N, that controls the frequency and the geometry of the limit cycle. We implement a self-adaptive mechanism that drives the local systems to share a common set of parameters Λc. This situation therefore strongly differs from classical synchronization problems where the Λk are kept constant. The deformations of the Λk towards the consensual Λc are “plastic” — once Λc is reached, it remains permanent even in absence of interactions. Again, this has to be contrasted with classical synchronization which does not affect the Λk (in the absence of interactions, individual behaviors are restored). The resulting consensual Λc can be analytically characterized. In general, the set of initial conditions from which Λc is reached depends on the network topology. The class of models discussed here unveil the basic features necessary to construct a wider class of dynamical system sharing self-adaptive attractor-shaping capability. Finally, we present numerical simulations that corroborate our theoretical assertions.
我们考虑一个N个耦合极限环振荡器的网络，每个振荡器都有一组控制参数Λk, k = 1，…，N，它控制极限环的频率和几何形状。我们实现了一种自适应机制，它驱动本地系统共享一组公共参数Λc。因此，这种情况与保持Λk不变的经典同步问题有很大不同。Λk向共识Λc的变形是“可塑的”——一旦达到Λc，即使没有相互作用，它仍然是永久的。同样，这必须与不影响Λk的经典同步(在没有交互的情况下，恢复个人行为)形成对比。由此产生的共识Λc可以分析表征。一般来说，达到Λc的初始条件集取决于网络拓扑。本文讨论的这类模型揭示了构建更广泛的一类共享自适应吸引子塑造能力的动力系统所必需的基本特征。最后，我们提出了数值模拟来证实我们的理论断言。
{"title":"Self-adaptive attractor-shaping for oscillators networks","authors":"Julio Rodríguez, M. Hongler, Philippe Blanchard","doi":"10.1109/INDS.2011.6024786","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024786","url":null,"abstract":"We consider a network of N coupled limit cycle oscillators, each having a set of control parameters Λ<inf>k</inf>, k = 1, …, N, that controls the frequency and the geometry of the limit cycle. We implement a self-adaptive mechanism that drives the local systems to share a common set of parameters Λ<inf>c</inf>. This situation therefore strongly differs from classical synchronization problems where the Λ<inf>k</inf> are kept constant. The deformations of the Λ<inf>k</inf> towards the consensual Λ<inf>c</inf> are “plastic” — once Λ<inf>c</inf> is reached, it remains permanent even in absence of interactions. Again, this has to be contrasted with classical synchronization which does not affect the Λ<inf>k</inf> (in the absence of interactions, individual behaviors are restored). The resulting consensual Λ<inf>c</inf> can be analytically characterized. In general, the set of initial conditions from which Λ<inf>c</inf> is reached depends on the network topology. The class of models discussed here unveil the basic features necessary to construct a wider class of dynamical system sharing self-adaptive attractor-shaping capability. Finally, we present numerical simulations that corroborate our theoretical assertions.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"487 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123060204","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 : 2011-07-25DOI: 10.1109/INDS.2011.6024810
S. Filipova-Petrakieva, K. Stoykov, V. Mladenov
Electrostatic field is a particular case of the electromagnetic field. The problems, solved in electrostatics, are concerned with determining the laws of variation of the electric field intensity E and electric potential V in all analyzed points in the field considered. Thus, it assumes that the potentials and the geometry dimensions of the objects, generating the field, are known. In this paper a detailed analysis and comparison of the existing methods, describing the behavior of a considered electrostatic field, is made. Two models, based on the pan filled with electrolyte and on the electrical-conductivity paper, respectively, are proposed and realized experimentally. They are applied for determining the capacity of the wires line in laboratory environment. The complete analysis and comparison of the results from both methods, is made.
{"title":"Analysis and comparison of the analitical and experimental methods modeling the electrostatic field","authors":"S. Filipova-Petrakieva, K. Stoykov, V. Mladenov","doi":"10.1109/INDS.2011.6024810","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024810","url":null,"abstract":"Electrostatic field is a particular case of the electromagnetic field. The problems, solved in electrostatics, are concerned with determining the laws of variation of the electric field intensity E and electric potential V in all analyzed points in the field considered. Thus, it assumes that the potentials and the geometry dimensions of the objects, generating the field, are known. In this paper a detailed analysis and comparison of the existing methods, describing the behavior of a considered electrostatic field, is made. Two models, based on the pan filled with electrolyte and on the electrical-conductivity paper, respectively, are proposed and realized experimentally. They are applied for determining the capacity of the wires line in laboratory environment. The complete analysis and comparison of the results from both methods, is made.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126358528","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 : 2011-07-25DOI: 10.1109/INDS.2011.6024799
S. Vujević, Tonći Modrić, Dino Lovrić
In this paper some basic terms such as voltage and potential difference are presented. In many cases they are regarded as identical which leads to confusion with understanding of the fundamental concept of electromagnetic field. Related to this topic, some authors in their books and papers on electromagnetic theory have discussed what the voltmeter actually measures, which is resolved here in a simple way. In this paper it is shown that there is a difference between the terms voltage and potential difference depending on what is the observation point — static fields or time-varying fields. Also in the transmission line model, the voltage between two points depends on the path of integration and, therefore, is ambiguous. What is commonly referred to as voltage, is transversal voltage that is a special case of voltage equal to the potential difference that is unique. Similarly, in electrical circuit analysis, branch voltages are unique and equal to difference of nodal voltages (nodal potentials).
{"title":"The difference between voltage and potential difference","authors":"S. Vujević, Tonći Modrić, Dino Lovrić","doi":"10.1109/INDS.2011.6024799","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024799","url":null,"abstract":"In this paper some basic terms such as voltage and potential difference are presented. In many cases they are regarded as identical which leads to confusion with understanding of the fundamental concept of electromagnetic field. Related to this topic, some authors in their books and papers on electromagnetic theory have discussed what the voltmeter actually measures, which is resolved here in a simple way. In this paper it is shown that there is a difference between the terms voltage and potential difference depending on what is the observation point — static fields or time-varying fields. Also in the transmission line model, the voltage between two points depends on the path of integration and, therefore, is ambiguous. What is commonly referred to as voltage, is transversal voltage that is a special case of voltage equal to the potential difference that is unique. Similarly, in electrical circuit analysis, branch voltages are unique and equal to difference of nodal voltages (nodal potentials).","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130807697","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 : 2011-07-25DOI: 10.1109/INDS.2011.6024812
L. Brancík, Bretislav Sevcik
The paper deals with a fully time-domain method for the simulation of hybrid systems containing multiconductor transmission lines (MTL) and lumped-parameter elements. The core of the method is in a connection of the implicit Wendroff method to describe the MTLs' telegraphic equations and the modified nodal analysis (MNA) to incorporate their boundary conditions. The utilization of the MNA approach ensures a high universality and covers arbitrarily complex systems on principle. The solution of resultant MNA differential algebraic equations (DAE) is based on the backward Euler method. The computer simulations have been performed in the Matlab language, based on a sparse-matrix technique to save the RAM and CPU time.
{"title":"Fully time-domain simulation of multiconductor transmission line systems: Implicit Wendroff and Euler methods within modified nodal analysis","authors":"L. Brancík, Bretislav Sevcik","doi":"10.1109/INDS.2011.6024812","DOIUrl":"https://doi.org/10.1109/INDS.2011.6024812","url":null,"abstract":"The paper deals with a fully time-domain method for the simulation of hybrid systems containing multiconductor transmission lines (MTL) and lumped-parameter elements. The core of the method is in a connection of the implicit Wendroff method to describe the MTLs' telegraphic equations and the modified nodal analysis (MNA) to incorporate their boundary conditions. The utilization of the MNA approach ensures a high universality and covers arbitrarily complex systems on principle. The solution of resultant MNA differential algebraic equations (DAE) is based on the backward Euler method. The computer simulations have been performed in the Matlab language, based on a sparse-matrix technique to save the RAM and CPU time.","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132539295","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 : 2011-07-25DOI: 10.1007/978-3-642-34560-9_20
M. Mansour
{"title":"Data reconciliation and bias estimation in on-line optimisation","authors":"M. Mansour","doi":"10.1007/978-3-642-34560-9_20","DOIUrl":"https://doi.org/10.1007/978-3-642-34560-9_20","url":null,"abstract":"","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132565638","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 : 2011-07-25DOI: 10.1007/978-3-642-24806-1_20
Sasanka Potluri, A. Fasih, Laxminand Kishore Vutukuru, Fadi Al Machot, K. Kyamakya
{"title":"CNN based high performance computing for real time image processing on GPU","authors":"Sasanka Potluri, A. Fasih, Laxminand Kishore Vutukuru, Fadi Al Machot, K. Kyamakya","doi":"10.1007/978-3-642-24806-1_20","DOIUrl":"https://doi.org/10.1007/978-3-642-24806-1_20","url":null,"abstract":"","PeriodicalId":117809,"journal":{"name":"Proceedings of the Joint INDS'11 & ISTET'11","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134274330","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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