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2008 11th International Conference on Optimization of Electrical and Electronic Equipment最新文献

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A new invariant set for video pattern recognition in ATR systems 一种新的ATR系统中视频模式识别的不变量集
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602472
I. Vizitiu, C. Molder, I.A. Radu, D. Munteanu
{"title":"A new invariant set for video pattern recognition in ATR systems","authors":"I. Vizitiu, C. Molder, I.A. Radu, D. Munteanu","doi":"10.1109/OPTIM.2008.4602472","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602472","url":null,"abstract":"The choice of an appropriate feature extraction method is essential for the success of the classification or recognition process. T his paper proposes a design method for a new pattern descriptor set based on the Flusser moment class, which is invariant to elementary geometric transformations and has an increased robustness to the action of some perturbations. Experimental results based on the use of a real video image database confirm the basic properties of this new descriptor set.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122797439","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
Reversible DC-to-DC converter for a dual voltage automotive system using zero voltage switching technique 零电压开关技术用于双电压汽车系统的可逆dc - dc变换器
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602417
P. Scortaru, D. Nicolae, M. Cernat, Z. Puklus
{"title":"Reversible DC-to-DC converter for a dual voltage automotive system using zero voltage switching technique","authors":"P. Scortaru, D. Nicolae, M. Cernat, Z. Puklus","doi":"10.1109/OPTIM.2008.4602417","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602417","url":null,"abstract":"A novel hysteretic controller for a bi-directional dc-dc converter with ZVS and interleaving for dual voltage systems in automobiles is presented. A variable frequency extended band hysteretic current control method is proposed. In comparison with classical fixed frequency current control PWM, the reverse polarity peak current needed for ZVS operation is kept constant. Inductor current ripple decreases with load reduction. Automatic changes in operation between buck and boost modes are accomplished without transient currents. Converter simulations are carried out using Matlab/Simulink platform.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131241180","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: 10
Artificial neural networks in the voltage control of electrical power systems 人工神经网络在电力系统电压控制中的应用
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602357
R. L. Teixeira, M. Vellasco
{"title":"Artificial neural networks in the voltage control of electrical power systems","authors":"R. L. Teixeira, M. Vellasco","doi":"10.1109/OPTIM.2008.4602357","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602357","url":null,"abstract":"Intelligent techniques are present in an increasing number of applications related to the electrical power systems (EPS), due to its ability in dealing with complex and nonlinear problems. Amongst these problems is the voltage control of the Brazilian EPS, which is currently based on the experience of real time operators. With the objective of developing a decision support system capable of assisting in the decision process of real time voltage control, this paper presents a neural network based system that identifies, automatically, the necessary actions for the correct voltage control of EPS. The proposed system has been evaluated in the voltage control of the 765 kV transmission system, associated to the flowing of Itaipu hydro power plant generation, showing its potential results for a practical application.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115142053","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
System for photovoltaic panels connections used in an experimental solar power generator 用于实验太阳能发电机的光伏板连接系统
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602521
D. Petreus, P. Molnar, M. Pascalau
{"title":"System for photovoltaic panels connections used in an experimental solar power generator","authors":"D. Petreus, P. Molnar, M. Pascalau","doi":"10.1109/OPTIM.2008.4602521","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602521","url":null,"abstract":"A solar power generator with a number of 21 configurations of output voltages and power capabilities was built. In this work we present the project and construction of such a power generator.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127606891","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 medical application of electromagnetic fields: The magnetic stimulation of nerve fibers inside a cylindrical tissue 电磁场的医学应用:对圆柱形组织内的神经纤维的磁刺激
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602348
M. Pleşa, L. Darabant, R. Ciupa, A. Darabant
{"title":"A medical application of electromagnetic fields: The magnetic stimulation of nerve fibers inside a cylindrical tissue","authors":"M. Pleşa, L. Darabant, R. Ciupa, A. Darabant","doi":"10.1109/OPTIM.2008.4602348","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602348","url":null,"abstract":"A model is presented that predicts the electric field induced in the arm during magnetic stimulation of a peripheral nerve. The arm is represented as a homogeneous, cylindrical volume conductor. The electric field arises from two sources: the time - varying magnetic field and the accumulation of charge on the tissue - air surface. In magnetic stimulation both of these contributions are significant. A passive cable model describes the response of the nerve fiber to this induced electric field. Once the coil's position, orientation and shape are given, and the resistance, capacitance and the initial voltage of the stimulating circuit are specified, the resulting transmembrane potential of the fiber is calculated as a function of distance and time.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132708354","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
PV orientation data needed in the design of the pseudo-equatorial tracker’s control program 拟赤道跟踪器控制程序设计中需要PV方位数据
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602448
D. Diaconescu, I. Visa, B. Burduhos, R. Saulescu
{"title":"PV orientation data needed in the design of the pseudo-equatorial tracker’s control program","authors":"D. Diaconescu, I. Visa, B. Burduhos, R. Saulescu","doi":"10.1109/OPTIM.2008.4602448","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602448","url":null,"abstract":"Based on the general geometrical relationships referring to the relative geometry Earth-Sun, this paper presents the analytical modeling and numerical simulations regarding the minimum stepspsila number, which are needed in the optimization of the tracking control program for a pseudo-equatorial PV tracking system. Firstly, the tracking cases with 0, 1, 2, 3 and 4 orientation steps are simulated and analyzed, then, there are comparatively analyzed the energetic contributions of the pseudo-equatorial tracking vs. the azimuthal tracking approached in a previous paper. The obtained results allow highlighting the useful conclusions for the design of the optimal control program for each tracker type.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133620878","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
Sensorless vector control of PMSM drive using heterodyne technique 基于外差技术的永磁同步电机无传感器矢量控制
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602463
M.P. Chaudhary, V. Patel, J. Jamnani
{"title":"Sensorless vector control of PMSM drive using heterodyne technique","authors":"M.P. Chaudhary, V. Patel, J. Jamnani","doi":"10.1109/OPTIM.2008.4602463","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602463","url":null,"abstract":"Sensorless speed and position control of permanent magnet synchronous machine still is a challenge especially for surface mounted permanent magnet synchronous machines. This paper describes the high frequency signal injection based technique for control of surface mounted permanent magnet synchronous motor. Due to the fact that it does not use the fundamental machine model, which fails at standstill it is possible to control the speed and position of the machine even at low speeds. The observer tracks the saliency that exists in the machine and based on that calculates the speed and position. High frequency signals are injected in machine's stationary axis and demodulation of responding H.F currents gives speed and position, which is independent of machine parameters. So this technique is independent on machine parameters and easily adaptable to different machines. As only the high frequency currents are processed for the speed and position estimation no extra hardware circuitry is required besides that for vector control scheme of AC drives. Vector control of speed and position was carried out on a single fixed point DSP processor TMS320F2811.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123333474","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: 6
Stand-alone wind system with Vanadium Redox Battery energy storage 带有钒氧化还原电池储能的独立风力系统
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602441
L. Barote, R. Weissbach, R. Teodorescu, C. Marinescu, M. Cirstea
{"title":"Stand-alone wind system with Vanadium Redox Battery energy storage","authors":"L. Barote, R. Weissbach, R. Teodorescu, C. Marinescu, M. Cirstea","doi":"10.1109/OPTIM.2008.4602441","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602441","url":null,"abstract":"Energy storage devices are required for power balance and power quality in stand alone wind energy systems. A Vanadium Redox Flow Battery (VRB) system has many features which make its integration with a stand alone wind energy system attractive. This paper proposes the integration of a VRB system with a typical stand-alone wind energy system during wind speed variation as well as transient performance under variable load. The investigated system consists of a variable speed wind turbine with permanent magnet synchronous generator (PMSG), diode rectifier bridge, buck-boost converter, bidirectional charge controller, transformer, inverter, ac loads and VRB (to store a surplus of wind energy and to supply power during a wind power shortage). The main purpose is to supply domestic appliances through a single phase 230 V, 50 Hz inverter. Simulations are accomplished in order to validate the stability of the supply.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123550173","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: 98
Optical disc detection in retinal images 视网膜图像中的光盘检测
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602510
M. Ivanovici, V. Scurtu
{"title":"Optical disc detection in retinal images","authors":"M. Ivanovici, V. Scurtu","doi":"10.1109/OPTIM.2008.4602510","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602510","url":null,"abstract":"Lasers are currently used for a wide spectrum of medical applications, including the treatment of eye disorders. When combined with digital image processing techniques, the issue of retinal image segmentation becomes of high importance. In this paper, our purpose is twofold: i) to identify and briefly present the existing approaches for the retinal image segmentation and ii) to test our hypothesis that the Viola-Jones algorithm-initially designed for face detection-can be suited as well for optical disc detection.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121906329","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
Distance laboratory applications ERRL: A study on radio communication in electronic field 远程实验室应用ERRL:电子领域无线电通信研究
2008 11th International Conference on Optimization of Electrical and Electronic Equipment Pub Date : 2008-05-22 DOI: 10.1109/OPTIM.2008.4602515
C. C. Aydin, G. Turkmen, E. Ozyurt, E. Aydin, N. Cagiltay, M. E. Ozbek, N. C. Alparslan, A. Kara
{"title":"Distance laboratory applications ERRL: A study on radio communication in electronic field","authors":"C. C. Aydin, G. Turkmen, E. Ozyurt, E. Aydin, N. Cagiltay, M. E. Ozbek, N. C. Alparslan, A. Kara","doi":"10.1109/OPTIM.2008.4602515","DOIUrl":"https://doi.org/10.1109/OPTIM.2008.4602515","url":null,"abstract":"In the last decade, the effect of Internet usage in education is gradually increased. When we look from academic perspective, the new technologies provided alternatives for students learning. As distance education becomes important everyday, the indispensable elements of teaching and education, laboratories must be reachable via remote connection. Consequently, the education that is going to be given to the students will be more flexible with respect to place and time constraints and students can reach laboratory facilities at any time and anywhere not only in lectures and practical hours. In this study, European remote radio laboratory (ERRL) which is a distance remote radio frequency (RF) laboratory designed for electrical-electronics students, is described generally. The software architecture, infrastructure and experiment that can be done with a remote connection have been described.","PeriodicalId":244464,"journal":{"name":"2008 11th International Conference on Optimization of Electrical and Electronic Equipment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126382930","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
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