Pub Date : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225678
J. Mlýnek, R. Srb
This article is focused on the process of artificial leather production in the automotive industry (e.g. the artificial leather on a car dashboard). One successful manufacturing process is the heating of the mould surface by infrared heaters located above the mould. We will describe one model of mould warming, as well as a method to calculate the heat radiation intensity on the mould surface in order to pinpoint the location of infrared heaters. During the calculation of heat radiation intensity across the mould surface, we will use experimental measured values for the heat radiation intensity from a sensor in proximity to an infrared heater. It is necessary to maintain approximately the same heat radiation intensity across the whole mould surface during warming process. The model described in this article allows us to optimize the infrared heaters' location for this purpose. In this way, we obtain the same material structure and color tone across the whole surface of an artificial leather. We will apply a genetic algorithm to optimize the heaters' location. A computational procedure of heat radiation intensity across mould surface and heaters location optimization was programmed in the language Matlab. The last chapter provides a practical example with a description of the solution.
{"title":"Artificial leather production in the automotive industry","authors":"J. Mlýnek, R. Srb","doi":"10.1109/ELEKTRO.2012.6225678","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225678","url":null,"abstract":"This article is focused on the process of artificial leather production in the automotive industry (e.g. the artificial leather on a car dashboard). One successful manufacturing process is the heating of the mould surface by infrared heaters located above the mould. We will describe one model of mould warming, as well as a method to calculate the heat radiation intensity on the mould surface in order to pinpoint the location of infrared heaters. During the calculation of heat radiation intensity across the mould surface, we will use experimental measured values for the heat radiation intensity from a sensor in proximity to an infrared heater. It is necessary to maintain approximately the same heat radiation intensity across the whole mould surface during warming process. The model described in this article allows us to optimize the infrared heaters' location for this purpose. In this way, we obtain the same material structure and color tone across the whole surface of an artificial leather. We will apply a genetic algorithm to optimize the heaters' location. A computational procedure of heat radiation intensity across mould surface and heaters location optimization was programmed in the language Matlab. The last chapter provides a practical example with a description of the solution.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131076630","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225574
Juraj Machaj, P. Brida
In this paper impact of the Access Points on localization accuracy of Rank Based Fingerprinting algorithm will be investigated. Rank Based Fingerprinting and Nearest Neighbor (NN) family algorithms will be described in detail. Results achieved by this algorithm were compared to NN and WKNN algorithm. Simulations were performed in Matlab environment in two different scenarios. The first scenario was proposed to evaluate impact of APs placement in the localization area. In the second scenario different numbers of APs were implemented in the area to estimate impact of APs number on the localization accuracy of the Rank Based Fingerprinting algorithm.
{"title":"Impact of Wi-Fi Access Points on performance of RBF localization algorithm","authors":"Juraj Machaj, P. Brida","doi":"10.1109/ELEKTRO.2012.6225574","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225574","url":null,"abstract":"In this paper impact of the Access Points on localization accuracy of Rank Based Fingerprinting algorithm will be investigated. Rank Based Fingerprinting and Nearest Neighbor (NN) family algorithms will be described in detail. Results achieved by this algorithm were compared to NN and WKNN algorithm. Simulations were performed in Matlab environment in two different scenarios. The first scenario was proposed to evaluate impact of APs placement in the localization area. In the second scenario different numbers of APs were implemented in the area to estimate impact of APs number on the localization accuracy of the Rank Based Fingerprinting algorithm.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130647277","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225606
O. Chernoyarov, M. Breznan
The synthesis and analysis of restoration algorithm of signals and images against hindrances on the basis of use of their generalized spectra in bases of orthogonal functions has been performed. It has been shown that there is an optimum number of modes (coefficients of the generalized spectrum) for signal/image restoration. Working data of the proposed algorithm for various types of useful signals have been illustrated.
{"title":"Restoration of signals and images against hindrances with use of the generalized spectra on the basis of orthogonal functions","authors":"O. Chernoyarov, M. Breznan","doi":"10.1109/ELEKTRO.2012.6225606","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225606","url":null,"abstract":"The synthesis and analysis of restoration algorithm of signals and images against hindrances on the basis of use of their generalized spectra in bases of orthogonal functions has been performed. It has been shown that there is an optimum number of modes (coefficients of the generalized spectrum) for signal/image restoration. Working data of the proposed algorithm for various types of useful signals have been illustrated.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127031892","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225649
L. Someşan, E. Pădurariu, I. Viorel, L. Szabó
In this paper a typical structure of a permanent magnet flux-switching machine (PMFSM) with 12 stator poles and 10 rotor poles is considered. The PMFSM design procedure is based on a specific analytical algorithm, which is validated by the results obtained via a two dimensions finite element method (2D-FEM). Also an optimal design procedure, based on Hooke-Jeeves method, applied to a permanent magnet flux-switching machine is implemented. Different objective functions, as maximum torque density and maximum efficiency were considered.
{"title":"Design of a permanent magnet flux-switching machine","authors":"L. Someşan, E. Pădurariu, I. Viorel, L. Szabó","doi":"10.1109/ELEKTRO.2012.6225649","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225649","url":null,"abstract":"In this paper a typical structure of a permanent magnet flux-switching machine (PMFSM) with 12 stator poles and 10 rotor poles is considered. The PMFSM design procedure is based on a specific analytical algorithm, which is validated by the results obtained via a two dimensions finite element method (2D-FEM). Also an optimal design procedure, based on Hooke-Jeeves method, applied to a permanent magnet flux-switching machine is implemented. Different objective functions, as maximum torque density and maximum efficiency were considered.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128193269","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225687
P. Vestenický, M. Vestenický, J. Palecek
This paper deals with undesirable phenomenon in inductively coupled RFID system i. e. by fading out the amplitude modulation of carrier signal in RFID reader. It is caused by inaccurate tuning of RFID transponder resonant circuit. The phenomenon is described by mathematical model of the inductively coupled RFID system.
{"title":"Critical resonant frequency calculation of inductively coupled RFID transponder","authors":"P. Vestenický, M. Vestenický, J. Palecek","doi":"10.1109/ELEKTRO.2012.6225687","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225687","url":null,"abstract":"This paper deals with undesirable phenomenon in inductively coupled RFID system i. e. by fading out the amplitude modulation of carrier signal in RFID reader. It is caused by inaccurate tuning of RFID transponder resonant circuit. The phenomenon is described by mathematical model of the inductively coupled RFID system.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121495697","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225669
L. Šroubová, R. Hamar, P. Kropík, L. Voráček
The influence of three-phase overhead power lines on parallel steel pipelines is investigated. The principal monitored value is their resistive heating. The computations are realized numerically, by the finite element method. The comparison of adaptive techniques in finite elements methods is shown using software Agros 2D and COMSOL Multiphysics. The methodology is illustrated by two examples whose results are discussed.
{"title":"Steel buried pipeline influenced power overhead line","authors":"L. Šroubová, R. Hamar, P. Kropík, L. Voráček","doi":"10.1109/ELEKTRO.2012.6225669","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225669","url":null,"abstract":"The influence of three-phase overhead power lines on parallel steel pipelines is investigated. The principal monitored value is their resistive heating. The computations are realized numerically, by the finite element method. The comparison of adaptive techniques in finite elements methods is shown using software Agros 2D and COMSOL Multiphysics. The methodology is illustrated by two examples whose results are discussed.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117172756","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225659
F. Mach, P. Kus, P. Karban, I. Doležel
Shape optimization of a device for electrostatic separation of triboelectrically charged plastic particles is carried out. The objective function maximizes the efficiency of separation consisting in the highest possible number of particles falling down to the prescribed bins. Electric field in the system is solved numerically, using the fully adaptive higher-order finite element method. The movement of particles in the device influenced by the Coulomb force is determined by means of an adaptive Runge-Kutta-Fehlberg method with a time varying time step. The shape optimization is carried out using a technique based on higher-order conjugate gradients. The methodology is illustrated by an example whose results are discussed.
{"title":"Optimized arrangement of device for electrostatic separation of plastic particles","authors":"F. Mach, P. Kus, P. Karban, I. Doležel","doi":"10.1109/ELEKTRO.2012.6225659","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225659","url":null,"abstract":"Shape optimization of a device for electrostatic separation of triboelectrically charged plastic particles is carried out. The objective function maximizes the efficiency of separation consisting in the highest possible number of particles falling down to the prescribed bins. Electric field in the system is solved numerically, using the fully adaptive higher-order finite element method. The movement of particles in the device influenced by the Coulomb force is determined by means of an adaptive Runge-Kutta-Fehlberg method with a time varying time step. The shape optimization is carried out using a technique based on higher-order conjugate gradients. The methodology is illustrated by an example whose results are discussed.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122426288","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225591
C. M. Davidson, A. D. de Paor, M. Lowery
Using ideas from control theory. i.e., the root locus method, Lyapunov's theorem of the first approximation, the describing function, Nyquist stability theory and the concept of the equivalent nonlinearity associated with dither injection in a nonlinear feedback loop, the phenomenon of quenching of pathological neural oscillations by deep brain stimulation is explored. The model used contains a second order unstable, linear, dynamical system, in a negative feedback loop with a nonlinearity comprising a linear gain in parallel with a “signed square”. This mimics, what is referred to by Alim Louis Benabid, the great pioneer of deep brain stimulation as “excitation of inhibitory pathways that lead to functional inhibition”. Describing function analysis is used to give a very close estimate of the inherent, almost sinusoidal oscillation, which is quenched by deep brain stimulation. The relationship between the critical amplitude of deep brain stimulation (expressed either in volts or milliamps) and the fractional pulse width needed for quenching the oscillation is derived. This is fitted as closely as possible to experimental results by Benabid et al., by minimizing a sum of squared error index.
运用控制理论的思想。利用根轨迹法、Lyapunov的一阶近似定理、描述函数、Nyquist稳定性理论以及非线性反馈回路中抖动注入的等效非线性概念，探讨了脑深部刺激对病理神经振荡的猝灭现象。所使用的模型包含一个二阶不稳定的线性动力系统，在一个非线性的负反馈回路中，非线性包括与“符号平方”平行的线性增益。这模仿了阿里姆·路易斯·贝纳比德(Alim Louis Benabid)所说的“激发抑制通路，导致功能性抑制”。贝纳比德是脑深部刺激的伟大先驱。描述函数分析是用来给出一个非常接近的估计固有的，几乎正弦振荡，这是由深部脑刺激淬灭。推导了深部脑刺激的临界振幅(以伏特或毫安表示)与猝灭振荡所需的脉冲宽度分数之间的关系。通过最小化误差平方和，这与Benabid等人的实验结果尽可能接近。
{"title":"Insights from control theory into deep brain stimulation for relief from Parkinson's disease","authors":"C. M. Davidson, A. D. de Paor, M. Lowery","doi":"10.1109/ELEKTRO.2012.6225591","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225591","url":null,"abstract":"Using ideas from control theory. i.e., the root locus method, Lyapunov's theorem of the first approximation, the describing function, Nyquist stability theory and the concept of the equivalent nonlinearity associated with dither injection in a nonlinear feedback loop, the phenomenon of quenching of pathological neural oscillations by deep brain stimulation is explored. The model used contains a second order unstable, linear, dynamical system, in a negative feedback loop with a nonlinearity comprising a linear gain in parallel with a “signed square”. This mimics, what is referred to by Alim Louis Benabid, the great pioneer of deep brain stimulation as “excitation of inhibitory pathways that lead to functional inhibition”. Describing function analysis is used to give a very close estimate of the inherent, almost sinusoidal oscillation, which is quenched by deep brain stimulation. The relationship between the critical amplitude of deep brain stimulation (expressed either in volts or milliamps) and the fractional pulse width needed for quenching the oscillation is derived. This is fitted as closely as possible to experimental results by Benabid et al., by minimizing a sum of squared error index.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125407687","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225663
P. Polcar
This paper deals with the principle, design and verification of the magnetorheological brake. Magnetic field in the brake gap is simulated and results are compared with measurements on the device, suitable magnetorheological fluid is chosen and torque characteristics of the brake are experimentally verified.
{"title":"Magnetorheological brake design and experimental verification","authors":"P. Polcar","doi":"10.1109/ELEKTRO.2012.6225663","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225663","url":null,"abstract":"This paper deals with the principle, design and verification of the magnetorheological brake. Magnetic field in the brake gap is simulated and results are compared with measurements on the device, suitable magnetorheological fluid is chosen and torque characteristics of the brake are experimentally verified.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121680172","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 : 2012-05-21DOI: 10.1109/ELEKTRO.2012.6225604
G. Cibira
In multichannel pulse Doppler surveillance radars, parallel signal processing is used in several time - spatial channels, i.e. range-azimuth-elevation. Time-spatially differenced data give radar output picture about targets existence, position and moving parameters. A data fusion center synthesizes differenced channels data to provide continuous reliable tracking and displaying. Targets move over flying area across time-spatially channels, including “null“ space occurring between antenna beams. The concept of non-coherent inter-channel statistical CFAR detection based on antenna beam forming is introduced in this paper to obtain continuous inter-channel even-detection output.
{"title":"Inter-channel CFAR detector","authors":"G. Cibira","doi":"10.1109/ELEKTRO.2012.6225604","DOIUrl":"https://doi.org/10.1109/ELEKTRO.2012.6225604","url":null,"abstract":"In multichannel pulse Doppler surveillance radars, parallel signal processing is used in several time - spatial channels, i.e. range-azimuth-elevation. Time-spatially differenced data give radar output picture about targets existence, position and moving parameters. A data fusion center synthesizes differenced channels data to provide continuous reliable tracking and displaying. Targets move over flying area across time-spatially channels, including “null“ space occurring between antenna beams. The concept of non-coherent inter-channel statistical CFAR detection based on antenna beam forming is introduced in this paper to obtain continuous inter-channel even-detection output.","PeriodicalId":343071,"journal":{"name":"2012 ELEKTRO","volume":"210 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122325292","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：