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2017 Iranian Conference on Electrical Engineering (ICEE)最新文献

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Improved double controller scheme 改进的双控制器方案
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985129
A. Ahmadi, S. Nikravesh, M. J. Mirekouhi
{"title":"Improved double controller scheme","authors":"A. Ahmadi, S. Nikravesh, M. J. Mirekouhi","doi":"10.1109/IRANIANCEE.2017.7985129","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985129","url":null,"abstract":"This paper presents a novel improved double controller scheme for time delayed processes. The proposed IDCS has a simple structure to analyse and tune which is based on a disturbance observer to estimate an input disturbance and consequently, eliminate the disturbance rejection deficiency of the double controller scheme proposed by Tian and Gao. The proper trade-off between robustness and disturbance rejection can be obtained by means of only one tuning parameter. Moreover, an analytical study on the tuning parameters is presented. In simulation study the performance of the proposed structure is compared with double controller scheme and predictive PI controller proposed by Hägglund. The results illustrate the advantages of the proposed dead time compensator.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131272585","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
Fast computation of finite difference generated time-domain green's functions of layered media using OpenAcc on graphics processors 在图形处理器上使用OpenAcc快速计算分层介质时域格林函数的有限差分
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985300
S. R. M. Rostami, M. Ghaffari‐Miab
{"title":"Fast computation of finite difference generated time-domain green's functions of layered media using OpenAcc on graphics processors","authors":"S. R. M. Rostami, M. Ghaffari‐Miab","doi":"10.1109/IRANIANCEE.2017.7985300","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985300","url":null,"abstract":"This paper presents a graphics processing unit (GPU) implementation of finite difference generated time domain green's functions (TDGFs) to evaluate vector potential of layered media. The media which considered is truncated by a perfect electric conductor (PEC) and symmetry axis. GPU parallel implementation is considered using OpenAcc and the efficacy of GPU for implementing this algorithm is illustrated. The accuracy of the proposed method is validated by comparing the results with that of a serial implementation of problem on central processing unit (CPU). The comparison with CPU one core execution time is presented and it is shown that using OpenAcc leads to significant speed-up without losing the accuracy.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"313 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115626293","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
Decentralized model based on game theory for energy management in smart distribution system under penetration of independent micro-grids 独立微电网渗透下智能配电系统能量管理的分散博弈论模型
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985188
M. Zadsar, M. Haghifam, M. Ghadamyari
{"title":"Decentralized model based on game theory for energy management in smart distribution system under penetration of independent micro-grids","authors":"M. Zadsar, M. Haghifam, M. Ghadamyari","doi":"10.1109/IRANIANCEE.2017.7985188","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985188","url":null,"abstract":"In this paper, a novel decentralized game theory based model has been provided for energy management in distribution systems under the penetration of micro-grids (MG). Each MG, as an independent entity, controls its generation level using the proposed control structure in order to maximize their profits. In addition, grid operation constraints including line thermal and voltage limitations have been considered. As the advent of renewable energy resources into smart distribution systems, uncertainty in renewable generation and also load uncertainty have been considered in this model too. The efficiency of proposed algorithm have been investigated by running the algorithm in modified RBTS system.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124385761","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
Incorporation of spatial and spectral contents in mixed-pixel decomposition of hyperspectral images 高光谱图像混合像元分解中空间与光谱内容的结合
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985355
Fatemeh Kowkabi, H. Ghassemian, A. Keshavarz
{"title":"Incorporation of spatial and spectral contents in mixed-pixel decomposition of hyperspectral images","authors":"Fatemeh Kowkabi, H. Ghassemian, A. Keshavarz","doi":"10.1109/IRANIANCEE.2017.7985355","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985355","url":null,"abstract":"Spectral unmixing is often involved two important steps. One is the identification of unique constituent elements of hyperspectral image known as Endmembers (EMs) and the other is their abundance fractions estimation. Accurate spectral unmixing has great impact on interpretation of unknown hyperspectral images. Many algorithms were developed to recognize EMs. Most of them are emphasized on exploitation of spectral information with lack of spatial contents support. Hence, several preprocessing modules (PPs) prior EM extraction stages were offered in order to incorporate both spatial and spectral contents. In this paper, we propose a novel preprocessing algorithm by recognizing spatial homogenous areas utilizing both unsupervised k-means clustering and a novel over-segmentation technique. Afterwards, areas with greater spectral purity degree are found thorough homogenous regions as the best EM candidates for the next EE stages. Respect to experimental results done on AVIRIS Cuprite scene, our scheme can improve reconstruction of original image and extract EMs more precisely near their USGS library signatures. Moreover, it provides a significant reduction in computation time of EM identification stage.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114348563","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
Investigation of confining layers effects on optoelectronic performances of transistor laser 约束层对晶体管激光器光电性能影响的研究
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985485
M. Hosseini, H. Kaatuzian, I. Taghavi
{"title":"Investigation of confining layers effects on optoelectronic performances of transistor laser","authors":"M. Hosseini, H. Kaatuzian, I. Taghavi","doi":"10.1109/IRANIANCEE.2017.7985485","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985485","url":null,"abstract":"Effects of confining layers on optoelectronic performances including, optical output, current gain and frequency response of single quantum well transistor laser is investigated. By developing a new continuity equation, effects of drift component in addition to diffusion term, is analyzed. Simulation results show that by using graded index (GRIN) layers of Al<inf>ξ</inf>Ga<inf>1−ξ</inf>As (ξ: 0.05➔0 in SCH1 and ξ: 0➔0.02 in SCH2) instead of GaAs in Separate Confinement Heterostructure (SCH), optical output power increases 37% and −3dB bandwidth increases to 21 GHz compared with 19 GHz in original structure.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114585110","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
Reconstruction of surface curvature from the triangular flat meshes for the calculation radar cross section of electrically large objects 基于三角形平面网格的曲面曲率重建，用于计算电大目标的雷达截面
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985313
Seyyed Javad Hosseini Ghanbarabad, V. Mohtashami
{"title":"Reconstruction of surface curvature from the triangular flat meshes for the calculation radar cross section of electrically large objects","authors":"Seyyed Javad Hosseini Ghanbarabad, V. Mohtashami","doi":"10.1109/IRANIANCEE.2017.7985313","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985313","url":null,"abstract":"In physical optics prediction of radar cross section, the surface of the object is usually modeled by flat triangular meshes in order to simplify the intersection test and electromagnetic field calculations. This geometrical representation ignores the surface curvature and the resulting changes in the curvature of the reflected wavefront. As a result the accuracy of radar cross section prediction decreases. This paper uses a bilinear approximation method to estimate the normal vector variations of surface and then uses the curvature tensor to recover the surface curvature data from flat meshes. Numerical results show that the presented method properly recovers the surface curvature at a low computational cost. By using the recovered curvature data in physical optics calculations, the accuracy of radar cross section prediction of a missile model is enhanced 1dB on average.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115131312","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
Design of broadband visible carpet cloak based on composite media 基于复合介质的宽带可视地毯斗篷设计
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985481
S. Khosravi, A. Rostami, M. Dolatyari, G. Rostami
{"title":"Design of broadband visible carpet cloak based on composite media","authors":"S. Khosravi, A. Rostami, M. Dolatyari, G. Rostami","doi":"10.1109/IRANIANCEE.2017.7985481","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985481","url":null,"abstract":"The main purpose of this paper is design of a carpet cloak to operate at visible wavelength range (500 to 700nm) using nanocomposite materials. The refractive index profile of the cloak region is calculated using an analytic function determined by standard conformal mapping. Since the refractive index for cloak region have to be between 0 and 1, and usually implementation of this range is hard, so, the cloak region is compacted as more as possible. Cloak region is divided into some pixels and the refractive index of each pixel is approximated as the refractive index value obtained by the mapping in the center of the pixel. To realize required refractive index, each pixel is considered as a polymeric medium with random distribution of spherical metal and doped semiconductor nanoparticles with desired plasma frequency and filling factor.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115043452","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
A 100 watts L-band power amplifier 100瓦l波段功率放大器
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985406
Tohid Naeimi, A. Ahmadi
{"title":"A 100 watts L-band power amplifier","authors":"Tohid Naeimi, A. Ahmadi","doi":"10.1109/IRANIANCEE.2017.7985406","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985406","url":null,"abstract":"In this paper, a 1100–1350 MHz power amplifier is introduced. For the realization of the RF power amplifier an LDMOS transistor is used. The amplifier delivers 100W power to a 50 ohm load with 50% efficiency. The transducer power gain of the amplifier is has 16dB at 100W output power. A mixed lumped element and transmission line matching circuit is used to implement matching network. The simulations are performed by the nonlinear model of the transistor, which is provided by the manufacturer. Finally the results of simulations are compared with the measurements.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122150422","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
Design and simulation of infrared a Photonic Crystal Band Pass Filters for fiber optics Communication 光纤通信用红外光子晶体带通滤波器的设计与仿真
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985095
Leila Hajshahvaladi, H. Kaatuzian, Mohammad Danaie
{"title":"Design and simulation of infrared a Photonic Crystal Band Pass Filters for fiber optics Communication","authors":"Leila Hajshahvaladi, H. Kaatuzian, Mohammad Danaie","doi":"10.1109/IRANIANCEE.2017.7985095","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985095","url":null,"abstract":"In this paper, we have provided two topologies for an optical Band Pass Filter (BPF) based on two-dimensional Photonic Crystal Ring Resonators (2D-PCRRs). The normalized transmission spectra for desired filters have been investigated using 2D finite-difference time-domain (2D-FDTD) numerical procedure in a square lattice of dielectric rods photonic crystal with a refractive index equal to 3.85. The photonic crystal is surrounded air. The Photonic Band Gap (PBG) of the basic crystal structure is computed by Plane Wave Expansion (PWE) procedure. According to the simulation results, by changing the geometry and the refractive index of dielectric rods in both the desired structure, transmission efficiency (T.E.) in the first structure, quality factor (Q) in the second structure and bandwidth in both structure has improved. For the first structure, T.E. for (∼1317nm) with minimum dispersion and (∼1592nm) with minimum attenuation is equal to about 64.3% and 84.3% respectively. However, in the second structure, Q for (∼1317nm) has reached more than 5800, and for (∼1592nm) is about 2800.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117218663","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: 8
Adaptive dynamic surface control design for a class of uncertain nonlinear systems using interval type-2 fuzzy systems 一类不确定非线性系统的区间2型模糊系统自适应动态面控制设计
2017 Iranian Conference on Electrical Engineering (ICEE) Pub Date : 2017-05-01 DOI: 10.1109/IRANIANCEE.2017.7985151
S. Rahmani, M. Shahriari-kahkeshi
{"title":"Adaptive dynamic surface control design for a class of uncertain nonlinear systems using interval type-2 fuzzy systems","authors":"S. Rahmani, M. Shahriari-kahkeshi","doi":"10.1109/IRANIANCEE.2017.7985151","DOIUrl":"https://doi.org/10.1109/IRANIANCEE.2017.7985151","url":null,"abstract":"This work proposes an adaptive dynamics surface control scheme based on the interval type-II fuzzy system for a class of uncertain nonlinear systems. Interval type-II fuzzy system is used to approximate the uncertain dynamics of the system. Then, a systematic methodology is proposed to design the dynamic surface control scheme. The stability of the closed loop system is guaranteed by the Lyapunov theorem and it is shown that all signals of the closed-loop system are uniformly ultimately bounded. Moreover, the tracking error can be made arbitrary small by proper selection of design parameters. The proposed scheme eliminates the “explosion of complexity” problem. Furthermore, it does not require the availability and boundedness of all derivatives of the reference trajectory for controller design. Finally, numerical example is presented to demonstrate the effectiveness and performance of the proposed scheme.","PeriodicalId":161929,"journal":{"name":"2017 Iranian Conference on Electrical Engineering (ICEE)","volume":"2010 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123924179","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
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