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

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Differences in ac-analysis of Si/Si/sub 1-x/Ge/sub x/ HBTs using drift-diffusion and hydrodynamic based device simulators 基于漂移扩散和流体动力学装置模拟器的Si/Si/sub - 1-x/Ge/sub -x/ HBTs交流分析差异
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499145
H. Forster, D. Nuernbergk, F. Schwierz, D. Schipanski
{"title":"Differences in ac-analysis of Si/Si/sub 1-x/Ge/sub x/ HBTs using drift-diffusion and hydrodynamic based device simulators","authors":"H. Forster, D. Nuernbergk, F. Schwierz, D. Schipanski","doi":"10.1109/ICCDCS.1995.499145","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499145","url":null,"abstract":"This paper reports the differences in 2D device-level simulation based on drift-diffusion-ac and hydrodynamic-ac analysis of SiGe-HBTs. Different Ge profiles were simulated to determine the influence of nonstationary transport effects on device performance. A comparison between the two models is useful in order to estimate the differences of both models in device structure optimizing processes.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"31 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":"127210439","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
Numerical methods to evaluate the electromagnetic fields below overhead transmission lines and their measurement 架空输电线路下电磁场的数值计算方法及测量
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499113
K. Hameyer, R. Mertens, R. Belmans
{"title":"Numerical methods to evaluate the electromagnetic fields below overhead transmission lines and their measurement","authors":"K. Hameyer, R. Mertens, R. Belmans","doi":"10.1109/ICCDCS.1995.499113","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499113","url":null,"abstract":"An increasing sensibility to ecological problems is seen. In the phase of planning high-voltage lines, the magnetic and electric field quantities have to be examined in order to avoid EMC problems with the surroundings of the power line. This request becomes even more important with the trend towards higher transmission line voltages. In this paper, the computation of the electric and magnetic field distribution below AC high-voltage lines is demonstrated. Advantages and disadvantages of two different methods able to evaluate the field quantities are described. The first discussed method, a semi numerical method using the laws of electrostatic techniques to simulate the three dimensional field distribution below the overhead line and second, the finite element method using specific boundary conditions to compute the two dimensional field distribution in an efficient way are under consideration. Results from both techniques are compared to measured data to verify the computed field values.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"64 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":"121869794","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: 27
A neuro-fuzzy approach to design adaptive control systems for PM motor drives 基于神经模糊方法的永磁电机自适应控制系统设计
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499149
C. Cavallaro, M. Coco, A. Raciti, A. Testa
{"title":"A neuro-fuzzy approach to design adaptive control systems for PM motor drives","authors":"C. Cavallaro, M. Coco, A. Raciti, A. Testa","doi":"10.1109/ICCDCS.1995.499149","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499149","url":null,"abstract":"The paper deals with the theoretical development and the practical implementation of an adaptive speed regulator scheme based on the Model Reference Adaptive Control approach, employing fuzzy laws for the adaptive process. A neuro-fuzzy approach for the optimization of the fuzzy adaptive laws is used to face one of the major drawbacks of the fuzzy control, the lack of a systematic optimization procedure. A performance comparison between the new controller and a conventional MRAC scheme is carried out by mean of simulations confirming the superiority of the proposed fuzzy adaptive regulator. Experimental tests are presented in order to practically evaluate the features of the proposed adaptive control scheme.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"1 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":"131055655","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
A fuzzy logic controller with switching knowledge base for industrial process control 一种具有切换知识库的工业过程控制模糊控制器
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499171
L.E. Ladera, C. Reyes, E. Margaglio, L. Soteldo
{"title":"A fuzzy logic controller with switching knowledge base for industrial process control","authors":"L.E. Ladera, C. Reyes, E. Margaglio, L. Soteldo","doi":"10.1109/ICCDCS.1995.499171","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499171","url":null,"abstract":"In this work fuzzy control was used to control the temperature of an aqueous solution of caustic soda. The main objective was to develop and implement a controller based on fuzzy logic theory as an alternative for process control in the brewing industry. The efficiency of this novel control strategy was then established given the actual results obtained. These results demonstrated the utility and efficiency of fuzzy control to control an industrial process with long range and fast changing characteristic variables. The fuzzy logic controller thus designed and used, showed a great adaptability through a change in the knowledge base.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"51 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131830886","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
Modeling and simulation of switch regulated dc-to-dc power converters of the boost type 升压型开关稳压dc- dc功率变换器的建模与仿真
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499122
M. Delgado, H. Sira-Ramírez
{"title":"Modeling and simulation of switch regulated dc-to-dc power converters of the boost type","authors":"M. Delgado, H. Sira-Ramírez","doi":"10.1109/ICCDCS.1995.499122","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499122","url":null,"abstract":"This paper presents the bond graph modeling and simulation of a switched dc-to-dc power converter of the boost type, regulated by means of a pulse-width-modulation (PWM) strategy. Two models are presented, the average model, which represents the switch as an ideal linear transformer element and the actual (discontinuous) model, which represents it as a non-linear transformer element whose function is a non-periodic pulse train taking values in the discrete set {0,1}. Both transforms are modulated by the pulse width. The bond graphs were simulated and both the average and the actual discontinuous PWM regulated responses of the dc-to-dc power converter for a given feedback duty ratio policy were obtained.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"41 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":"133480648","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: 14
Statistical tool wear evaluation for cutting processes 切削过程中刀具磨损的统计评估
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499125
F. Betancourt-Silva, F. Betancourt-Soto, L. J. Barrios, D. Guinea
{"title":"Statistical tool wear evaluation for cutting processes","authors":"F. Betancourt-Silva, F. Betancourt-Soto, L. J. Barrios, D. Guinea","doi":"10.1109/ICCDCS.1995.499125","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499125","url":null,"abstract":"The storage of large volumes of high speed data in many manufacturing processes can be a problem. This paper analyses an experimental methodology for sensor data information obtained from several sensors. The use of the most accurate and reliable sensors is in order to measure and control some important variables and because all the information obtained by these sensors may not be necessary and some of them may be redundant. Sensor data interpretation can be done by several statistical techniques as an alternative. A statistical evaluation of a multisensor system in cutting processes to obtain variables in critical tool wear stages is made simultaneously. Some parameters are monitored (force, temperature, electric current and acoustic emission), and tool wear estimated by some computed characteristic parameters.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"63 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":"130731668","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
Non-recurrent neural networks for auditory perceptual modeling 听觉感知建模的非循环神经网络
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499132
E. Brown, D. Res, C. Bruscianelli, B. Mili de la Roca
{"title":"Non-recurrent neural networks for auditory perceptual modeling","authors":"E. Brown, D. Res, C. Bruscianelli, B. Mili de la Roca","doi":"10.1109/ICCDCS.1995.499132","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499132","url":null,"abstract":"In this paper the auditory masking phenomenon is modeled by means of feed-forward neural networks (NNs). It is shown that, because of their regularity and distributed structure, NNs are suitable for efficient implementations. A mathematical model of auditory masking, fitted for a perceptual coding algorithm, was used to generate the training data. Several network topologies were tested in search of a NN able to adequately represent the data space and with the minimum computational cost. Comparisons between the outputs of both the model and the selected NN are made, showing encouraging results for further explorations.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"39 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":"124671989","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
Eliminating parasitic resistances in parameter extraction of semiconductor device models 消除半导体器件模型参数提取中的寄生电阻
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499164
F. Garcia Sanchez, A. Ortiz-Conde, G. De Mercato, J. Liou, L. Recht
{"title":"Eliminating parasitic resistances in parameter extraction of semiconductor device models","authors":"F. Garcia Sanchez, A. Ortiz-Conde, G. De Mercato, J. Liou, L. Recht","doi":"10.1109/ICCDCS.1995.499164","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499164","url":null,"abstract":"A network theorem based on potential functions is used for the purpose of cancelling the detrimental effect that the presence of parasitic linear elements has on procedures used for extracting the intrinsic-model parameters of semiconductor devices. The method is based on the use of an auxiliary function: the difference between the content and the co-content functions of the device. The theorem states that, for any arbitrarily connected network of linear and nonlinear branch elements, the summation of the difference functions of each of the branches is zero, and that this difference function is zero at any branch represented by a linear I-V characteristic. In establishing this theorem we also show that: (a) the summation of the contents, over all the branches, is zero; and (b) the summation of the co-contents, over all the branches, is zero. To illustrate the procedure the intrinsic model parameters of a real p-n junction are extracted using this idea.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"17 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":"116795644","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: 25
A model for reverse short-channel effects in MOSFETs mosfet中反向短沟道效应的模型
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499163
R. Narayanan, A. Ortiz-Conde, J. Liou, L. Golovanova, W. Wong, F. Garcia Sanchez
{"title":"A model for reverse short-channel effects in MOSFETs","authors":"R. Narayanan, A. Ortiz-Conde, J. Liou, L. Golovanova, W. Wong, F. Garcia Sanchez","doi":"10.1109/ICCDCS.1995.499163","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499163","url":null,"abstract":"A model for reverse short-channel effects of the threshold voltage is presented by adding two separate n-regions around the source and drain regions of a p-channel MOSFET. Two-dimensional simulations with MEDICI of this modified p-channel MOSFET verifies this model. Experimental evidence of the reverse short-channel effects is also found. The errors inherent to the method for extracting the threshold voltage are shown not to be responsible for the reverse short-channel effects.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"8 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":"128480045","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
Intracardiac monophasic pulse driver for PC-based electrophysiological studies 心内单相脉冲驱动基于pc的电生理研究
Proceedings of First International Caracas Conference on Devices, Circuits and Systems Pub Date : 1995-12-12 DOI: 10.1109/ICCDCS.1995.499112
O. Escalona, J. Anderson
{"title":"Intracardiac monophasic pulse driver for PC-based electrophysiological studies","authors":"O. Escalona, J. Anderson","doi":"10.1109/ICCDCS.1995.499112","DOIUrl":"https://doi.org/10.1109/ICCDCS.1995.499112","url":null,"abstract":"The authors have developed and clinically tested a compact unit which interfaces a PC with an intracardiac catheter for monophasic pulse delivery in electrophysiological studies. Also, while not pacing, the unit senses the intracardiac electrogram which appears at the same pacing terminals of the catheter. Thus, this relatively simple interface unit has enabled a PC with a D/A and A/D board, to perform safe programmed stimulation of the heart and real-time monitoring of it's response to each stimulus, as well as it's natural rhythm, via the PC screen. The unit has enabled to prove the great potentials that call be unfolded with PC-based stimulation.","PeriodicalId":373470,"journal":{"name":"Proceedings of First International Caracas Conference on Devices, Circuits and Systems","volume":"1 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":"125818745","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
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