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EUROCON 2007 - The International Conference on "Computer as a Tool"最新文献

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Different Approaches for Clock Skew Analysis in Present and Future Synchronous IC's 当前和未来同步集成电路中时钟偏差分析的不同方法
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400541
G. Tosik, L. Gallego, Z. Lisik
{"title":"Different Approaches for Clock Skew Analysis in Present and Future Synchronous IC's","authors":"G. Tosik, L. Gallego, Z. Lisik","doi":"10.1109/EURCON.2007.4400541","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400541","url":null,"abstract":"One of the major performance limitations in chip designs is clock skew, the uncertainty in arrival times between a pair of clocks. Clock skew can limit overall circuit performance, or even cause functional errors. The main goal of this paper is to analyse and compare the most popular analytical models for estimating the clock skew for present and future VLSI systems. These models are compared for a generic global clock distribution network (an H-tree) with a JAVA program. Finally based on the presented models, a prevision for the clock skew value in upcoming technology nodes will be given.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116764381","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: 7
Fault Diagnosis of AC Squirrel-cage Asynchronous Motors based on Wavelet Packet-Neural Network 基于小波包神经网络的交流鼠笼异步电动机故障诊断
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400425
Zaiping Chen, Jing Meng, Bin Liang, Dan Guo
{"title":"Fault Diagnosis of AC Squirrel-cage Asynchronous Motors based on Wavelet Packet-Neural Network","authors":"Zaiping Chen, Jing Meng, Bin Liang, Dan Guo","doi":"10.1109/EURCON.2007.4400425","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400425","url":null,"abstract":"Squirrel-cage asynchronous motors are used widely in industry production process. It is significant to improve squirrel-cage asynchronous motors diagnosis technique in application. It helps to decrease the occurrence of accident and reduce the cost of maintenance. Based on the wavelet packet-neural network the scheme on the real-time diagnosis of the stator, bearing, and eccentricity fault of squirrel-cage asynchronous motors is presented in this paper. The electric machines stator current signal is analyzed and processed, with wavelet packet decomposition algorithm. By this method the problem that conventional FFT algorithm can't provide any partial information in time domain is solved. The eigenvectors of bearing and eccentricity fault that processed by wavelet packet decomposition algorithm. The eigenvectors are tiny. The neural networks are not convergent easily when they are trained, with these eigenvectors as above. To this problem, this paper gives a novel scheme based on logarithm fault eigenvectors extraction. By the logarithm fault eigenvectors proposed, the fault of squirrel-cage asynchronous motors can be real time diagnosed and categorized precisely. This scheme is feasible, which is proved by the test experiment.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122536367","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: 4
The Time-Minimal and Without Overshoot Speed Control of DC Motor 直流电动机最小时间无超调速度控制
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400461
A. Andrzejewski
{"title":"The Time-Minimal and Without Overshoot Speed Control of DC Motor","authors":"A. Andrzejewski","doi":"10.1109/EURCON.2007.4400461","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400461","url":null,"abstract":"Paper concerns the variable speed drive with the nonlinear speed controller and the estimator of the electromechanical subsystem. The new speed controller enables the time minimal speed control without overshoot. The nonlinear characteristic of speed controller is derived with use of dynamic programming approach. The relatively simple microprocessor realization of speed controller is presented. From the laboratory investigations results that speed can be controlled with use of one switching process of converter supplying DC motor and without overshoot.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122777417","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: 4
Vision-Based Toddler Tracking at Home 基于视觉的幼儿在家跟踪
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400446
H. Na, S. Qin, D. Wright
{"title":"Vision-Based Toddler Tracking at Home","authors":"H. Na, S. Qin, D. Wright","doi":"10.1109/EURCON.2007.4400446","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400446","url":null,"abstract":"This paper presents a vision-based toddler tracking system for detecting risk factors of a toddler's fall within the home environment. The risk factors have environmental and behavioral aspects and the research in this paper focuses on the behavioral aspects. Apart from common image processing tasks such as background subtraction, the vision-based toddler tracking involves human classification, acquisition of motion and position information, and handling of regional merges and splits. The human classification is based on dynamic motion vectors of the human body. The center of mass of each contour is detected and connected with the closest center of mass in the next frame to obtain position, speed, and directional information. This tracking system is further enhanced by dealing with regional merges and splits due to multiple object occlusions. In order to identify the merges and splits, two directional detections of closest region centers are conducted between every two successive frames. Merges and splits of a single object due to errors in the background subtraction are also handled. The tracking algorithms have been developed, implemented and tested.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122794449","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
Voltage Space Vector Control System of Vienna Rectifier I 维也纳整流器电压空间矢量控制系统1
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400655
G. Radomski
{"title":"Voltage Space Vector Control System of Vienna Rectifier I","authors":"G. Radomski","doi":"10.1109/EURCON.2007.4400655","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400655","url":null,"abstract":"Theoretical background of control method for Vienna rectifier I has been presented in the paper. Proposed method involves space vector reference frame conversions. The area of the basic voltage space vectors belonging to the common current sector is converted into similar to that one obtained in the case of bipolar converter.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121766680","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: 12
Fast Operations with the Use of Differential Codes 差分码的快速运算
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400343
Wlodzimierz Pogribny, M. Drechny
{"title":"Fast Operations with the Use of Differential Codes","authors":"Wlodzimierz Pogribny, M. Drechny","doi":"10.1109/EURCON.2007.4400343","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400343","url":null,"abstract":"This paper presents the new approach to a rate increase of multiplication, which is the most commonly used operation in data computation. Multiplications are usually done in multibit Pulse Code Modulation (PCM) format. However, applying this format is connected with doing many time-consuming operations what often causes the increase of the total calculation time. On the other hand, mixed formats which join differential codes with PCM codes can lead to the decrease of code word length and speed-up operation in the data computation. Differential codes can be obtained on the basis of differential kinds of Delta Modulation (DM). Some kinds of DM such as MDPCM (Modified DPCM) and SDPCM (Synthetic DPCM) enable to replace the multiplications with fast shift operations.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115148593","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
Fuel Cells Solution for Auxiliary Services Backup Supply in a Power System Substation 电力系统变电站辅助业务备用电源的燃料电池解决方案
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400668
G. Vuc, H. Ardelean, B. Lustrea, V. Duša, I. Borlea, S. Kilyeni
{"title":"Fuel Cells Solution for Auxiliary Services Backup Supply in a Power System Substation","authors":"G. Vuc, H. Ardelean, B. Lustrea, V. Duša, I. Borlea, S. Kilyeni","doi":"10.1109/EURCON.2007.4400668","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400668","url":null,"abstract":"This paper presents some considerations about fuel cell energy utilization instead of classical backup sources for substation ancillary services. The main necessity of substation ancillary services is to stay supplied and one modern solution to supply the substation ancillary services using a clean energy is compared versus an actual classical solution. The key elements of the investigated solution are the use of fuel cells with the presence of a DC/AC electronic inverter for substation AC auxiliary services supply in opposition with classical Diesel group solution. For the immediate next future the proposed solutions appear to be technically and economically feasible. Two fuel cell solutions are commercially available, the proton exchange membrane fuel cell (PEMFC) and the solid oxide fuel cell (SOFC), but finally the SOFC is selected for feasibility examination because the CHP possibilities. The conclusions are very stimulating.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128147918","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
Charge Controlled Class DE Series Resonant Converter - New Concept 电荷控制DE类系列谐振变换器——新概念
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400292
J. Matysik, B. Szymanski
{"title":"Charge Controlled Class DE Series Resonant Converter - New Concept","authors":"J. Matysik, B. Szymanski","doi":"10.1109/EURCON.2007.4400292","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400292","url":null,"abstract":"This article analyses modes of operation of class DE voltage source inverter with series resonant circuit. The new control method which has been proposed realizes optimal mode of operation and the control of the output power of the power converter. The method, based on the detection of the frequency and the maximum of the output current, was checked with simulation investigations. This method provides optimal mode of control even if the load current varies in time.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"471 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133524308","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: 5
Computation of Electromagnetic Field of Transformer Station 110/10(20) kV Using the CDEGS software 用CDEGS软件计算110/10(20)kV变电站电磁场
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400295
S. Nikolovski, P. Marie, Z. Balis, B. Štefić
{"title":"Computation of Electromagnetic Field of Transformer Station 110/10(20) kV Using the CDEGS software","authors":"S. Nikolovski, P. Marie, Z. Balis, B. Štefić","doi":"10.1109/EURCON.2007.4400295","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400295","url":null,"abstract":"This paper presents computations of the electric and magnetic fields of complex busbars, transformers and transmission line structures at transmission power station 110/10(20) kV. The fundamental sources of low frequency electromagnetic fields in the TS are the primary elements of the 110 kV open substations as well as connected 110 kV overhead lines. Due to the complexity of the geometry of the substation elements, it was necessary to apply a three-dimensional approach to the computation and analysis of the electromagnetic field. Computations of electromagnetic fields were conducted for quasi-static states of electrical values at a power frequency of 50 Hz. The calculated electric and magnetic fields were compared with permissible levels according to Croatian regulations. The maximum permissible levels for the electric field and magnetic flux density were found to be exceeded at some locations in the station.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131802069","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
Magnetic Coils Design for Focal Stimulation of the Nervous System 局部刺激神经系统的磁线圈设计
EUROCON 2007 - The International Conference on "Computer as a Tool" Pub Date : 2007-12-26 DOI: 10.1109/EURCON.2007.4400661
L. Cret, M. Pleşa, D. Micu, R. Ciupa
{"title":"Magnetic Coils Design for Focal Stimulation of the Nervous System","authors":"L. Cret, M. Pleşa, D. Micu, R. Ciupa","doi":"10.1109/EURCON.2007.4400661","DOIUrl":"https://doi.org/10.1109/EURCON.2007.4400661","url":null,"abstract":"The technique of magnetic stimulation of nerve fibres represents a new direction of research in modern medicine. This study starts from a major limitation of the coils used for magnetic stimulation: their inability to specifically stimulate the target tissue, without activating the surrounding areas. The first goal of this study was to determine the optimal configuration of coils for some specific applications and evaluate the distribution of the electric field induced. Once the coil configuration established, we address other issues that need to be solved: achieving smaller coils, reducing power consumption (the low efficiency of power transfer from the coil to the tissue is a major drawback) and reducing coil heating.","PeriodicalId":191423,"journal":{"name":"EUROCON 2007 - The International Conference on \"Computer as a Tool\"","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132270440","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: 9
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