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Proceedings of First International Caracas Conference on Devices, Circuits and Systems最新文献

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Modelling of a ZVS resonant DC-DC converter for operation with freewheeling period 具有自由周期运行的ZVS谐振DC-DC变换器的建模
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499155
R. El-Bachtiri, E. Matagne, F. Labrique
{"title":"Modelling of a ZVS resonant DC-DC converter for operation with freewheeling period","authors":"R. El-Bachtiri, E. Matagne, F. Labrique","doi":"10.1109/ICCDCS.1995.499155","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499155","url":null,"abstract":"This study concerns an indirect DC-DC series resonant converter. The first parameter for controlling this type of converter is the operating frequency. When a phase shift /spl beta/ is introduced between the controls of the two legs, we get a second parameter for controlling the conversion. Using the state plane, the recurrence equation of state variables have been determined and used for computing the steady state conditions. This has allowed the curves giving the normalized output power versus the regulating parameters (frequency and phase shift) and also the steady state output characteristic to be drawn. The analysis performed includes a small signal modelling based on the linearisation of the behavior around the steady state working point.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121248975","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}
引用次数: 1
Application of a new OLS learning algorithm for video ghost cancellation 一种新的OLS学习算法在视频鬼影消除中的应用
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499178
C. P. Markhauser, A. Yong
{"title":"Application of a new OLS learning algorithm for video ghost cancellation","authors":"C. P. Markhauser, A. Yong","doi":"10.1109/ICCDCS.1995.499178","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499178","url":null,"abstract":"Very successful multiple video ghost cancellation simulations have been obtained with the application of a designed learning algorithm, based on the orthogonal least square method, to a channel identification process based on a FIR system model. The algorithm can be visualized by assuming the existence of a data matrix, at the input of the equalizer, which is created with a time shifting process, in order to generate \"M\" column vectors. The designed algorithm processes these vectors and, with the aid of an orthogonalization method, calculates a set of the most representative one, with respect to a desired output signal. The ghost parameters were obtained with the aid of a forward regressor method. The process has shown to be very effective for the accurate calculation of the ghost parameters, even in the presence of considerable noise levels, and is also used to train RBF approximation networks for the systematic selection of its centroids. In all the tests performed in this work, the proposed technique has given much better results than using conventional algorithms.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116221400","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}
引用次数: 0
Modern types of digital coding for digital terrestrial TV transmission 用于数字地面电视传输的现代数字编码类型
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499130
U. Kraus
{"title":"Modern types of digital coding for digital terrestrial TV transmission","authors":"U. Kraus","doi":"10.1109/ICCDCS.1995.499130","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499130","url":null,"abstract":"Digital modulation techniques offer the possibility of an errorfree signal reconstruction in the receiver despite signal impairments occurring in a non ideal channel. For digital terrestrial TV-Broadcast services OFDM offers a high quality and robust transmission along with an economic use of the frequency spectrum.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129329849","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}
引用次数: 0
Comparison of adaptive systems for suppression of stimulation artifacts in EMG signals 抑制肌电信号中刺激伪影的自适应系统的比较
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499133
R.I. Barbosa-Mier, A. Carrillo Chica, J.F. Vega Riveros
{"title":"Comparison of adaptive systems for suppression of stimulation artifacts in EMG signals","authors":"R.I. Barbosa-Mier, A. Carrillo Chica, J.F. Vega Riveros","doi":"10.1109/ICCDCS.1995.499133","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499133","url":null,"abstract":"An electromyographic signal (EMG) is formed by a component that is medically useful which contains information about the muscular activity, and an artifact, which is caused by external effects, e.g., Functional Electrical Stimulation (FES) signals. Several methods have been used to suppress such artifacts based on adaptive schemes. This paper presents a comparison between an adaptive filter using the Least Mean Squares algorithm (LMS) and a Multilayer Perceptron (MLP) using error Backpropagation (BP), Recursive Least Squares (RLS) and Iterative Least Squares (ILS) algorithms. The criteria for comparison are artifact suppression and speed of convergence.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130498349","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}
引用次数: 2
Spatial mode modulation of laser beams for optical communication 光通信用激光束的空间模调制
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499143
B. L. Anderson, L. Pelz
{"title":"Spatial mode modulation of laser beams for optical communication","authors":"B. L. Anderson, L. Pelz","doi":"10.1109/ICCDCS.1995.499143","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499143","url":null,"abstract":"A new channel for optical communication is described, in which the energy distribution among the spatial modes of a laser beam is modulated. The number and strength of the modes directly influences the spatial coherence of a beam, which can then be detected with a simple interferometer. The transmitter is an electric-optic device that allows one or two modes to propagate depending on the logic state. The distribution of the energy among the allowed modes is independent of the overall intensity, thereby giving another depth of multiplexing in addition to common schemes such as intensify and frequency modulation, polarization, and wavelength-division multiplexing, etc. We present an optical interconnection scheme by which the intensity carries the data and the spatial coherence conveys the address information on the same beam.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131434138","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}
引用次数: 2
Application of adaptive reclosers to automatic distribution systems 自适应开关在自动配电系统中的应用
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499136
L. Perez, E. Sorrentino, A.E. Hernandez, A. Urdaneta, J. F. Bermudez
{"title":"Application of adaptive reclosers to automatic distribution systems","authors":"L. Perez, E. Sorrentino, A.E. Hernandez, A. Urdaneta, J. F. Bermudez","doi":"10.1109/ICCDCS.1995.499136","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499136","url":null,"abstract":"This paper presents a discussion on several issues related to adaptive reclosers. It is shown, by using a realistic example, that adaptive reclosers should be installed in distribution systems with automatic switching capabilities in order to optimize their protective function. In particular, the case of primary circuits with automatic transfer systems is discussed. The conclusion is that the fuse-saving scheme normally implemented in primary-radial distribution systems can be automatically achieved for the different configurations of the primary circuit when adaptive reclosers are used. The paper also presents a brief discussion on the requirements that should be met by application programs for adaptive distribution protection.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131716772","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}
引用次数: 3
Laser processing for electronic circuit restructuring 电子电路重构用激光加工
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499109
W. Moreno, R. Lee, N. Saini, O. Acon
{"title":"Laser processing for electronic circuit restructuring","authors":"W. Moreno, R. Lee, N. Saini, O. Acon","doi":"10.1109/ICCDCS.1995.499109","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499109","url":null,"abstract":"The Center for Microelectronics Research (CMR) at the University of South Florida has pursued the development of high density interconnect technologies for advanced electronic systems. Primary focus has been in the area of Laser created interconnects for quick-turn around prototyping of electronic circuits fabricated using standard Very Large Scale Integration (VLSI) process techniques. The Laser Restructuring of a specific application circuitry at the wafer or packaged chip level is accomplished by creating low electrical resistance links between conductors and cutting conductor lines using an integrated computer controlled Laser system. Laser restructuring of generic electronic circuits, is an excellent technique for low-cost, quick turn around custom programmed circuits. A great effort was put into developing an infrastructure within the Laboratory that will conduct state of the art research while keeping manufacturing capabilities for rapid turn around of restructured circuitry using optimized process parameters. Total system control, flexibility, high data quality, and full documentation are examples of this R&D developed environment. Using Design of Experiment techniques and statistical data analysis, Laser created interconnects were studied. Optimum process parameters were obtained using this methodology. The complete process development will be presented at the conference including among others the design and software development of a stand alone interconnect controller (ICON), testing procedure for packaged, and the statistical data analysis for generating the optimum process parameter.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132432358","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}
引用次数: 0
Finite-difference computation of the characteristic impedance of unbounded striplines and microstrip lines 无界带状线和微带线特性阻抗的有限差分计算
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499169
O.S. Rosales, D. Suster
{"title":"Finite-difference computation of the characteristic impedance of unbounded striplines and microstrip lines","authors":"O.S. Rosales, D. Suster","doi":"10.1109/ICCDCS.1995.499169","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499169","url":null,"abstract":"A novel numerical method for the computation of the TEM characteristic impedance of unbounded striplines and microstrip lines is presented. The method uses non-linear orthogonal transformations to map the unbounded domain into a rectangle for the application of the finite-difference method. Equations for the electrostatic potential and the per-unit length capacitances are derived in the transformed domain. The finite-difference method is applied to obtain discrete versions of these equations. The over-relaxation algorithm is used to solve the discrete equations for the electrostatic potential. The characteristic impedance is computed in terms of the per-unit length capacitances. The implementation of the algorithm that solves the discrete equations is described. Results computed with our method and with Wheeler's formulas are compared, showing excellent agreement between the two methods.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116318536","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}
引用次数: 3
A new methodology for the automatic load recovery in distribution primary feeders 配电一次馈线负荷自动恢复的新方法
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499174
E. Bozzetto, M. Calabrese, M. Sánchez, T. Lucero
{"title":"A new methodology for the automatic load recovery in distribution primary feeders","authors":"E. Bozzetto, M. Calabrese, M. Sánchez, T. Lucero","doi":"10.1109/ICCDCS.1995.499174","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499174","url":null,"abstract":"In order to achieve the automatic load recovery of the distribution circuits with open loop schemes, the use of reclosers and control units with remote access facilities have recently been recommended . In this paper a method is proposed to take advantage of some of those facilities, specially for the time coordination with other devices, like automatic switcher. The coordination of these reclosers must be carried out by setting the dead time, with the same fast and slow curves for several values of threshold tripping, and lockout in two operations. This sequence of operations should lead to a selective isolation of the faulted section. To achieve this, it is necessary to set the dead times according to a logic which is described here. The criterion suggested consists of setting the dead times from low to high, starting from the recloser nearest to substation.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121903274","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}
引用次数: 3
DISCO II: an improved computer aided design program for energy recovering snubbers in inverter applications DISCO II:一种改进的计算机辅助设计程序，用于逆变器应用中的能量回收缓冲器
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499173
J. Regidor, V. Guzmán, M.I. Gimenez de Guzman
{"title":"DISCO II: an improved computer aided design program for energy recovering snubbers in inverter applications","authors":"J. Regidor, V. Guzmán, M.I. Gimenez de Guzman","doi":"10.1109/ICCDCS.1995.499173","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499173","url":null,"abstract":"Snubber inverter design is a time consuming task requiring trade-off between critical circuit parameters. The program DISCO II calculates standard RC dissipative snubbers and low loss energy recovering snubbers (in either single capacitor or three pole configuration) and, using the Macintosh Graphic User Interface (GUI), helps the designer in the selection of the best design trade-off in a completely interactive way.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123899250","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}
引用次数: 1
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