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2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI)最新文献

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An integrated approach with redispatch and UPFC for voltage stability enhancement in deregulated power systems 解除管制电力系统电压稳定性的再调度和UPFC集成方法
A. Venkateswarlu, S. Ram, P. Raju
In this paper, an effort has been made to enhance static voltage stability using Unified Power Flow Controller (UPFC) and redispatch as an integrated approach. The redispatch using Interior Point — Optimal Power Flow (IP-OPF) can ensure all operating constraints of system within satisfactory range. Using this operating state, the Continuous Power Flow (CPF) is used to compute Critical Loading Margin (CLM) as a measure for voltage instability margin. The case studies are repeated by using Decoupled Power Injection Modeling (DPIM) of UPFC on IEEE 14-bus test system. The outcome is validating the proposed approach to enhance voltage stability margin significantly even under (N-1) line contingency.
本文采用统一潮流控制器(UPFC)和重调度作为一种集成方法来提高静态电压稳定性。采用内点最优潮流(IP-OPF)重新调度可以保证系统的所有运行约束都在满意的范围内。利用这种运行状态,用连续潮流(CPF)计算临界负荷裕度(CLM),作为电压不稳定裕度的度量。通过在IEEE 14总线测试系统上使用UPFC的解耦功率注入建模(DPIM)来重复案例研究。结果验证了所提出的方法,即使在(N-1)线路意外情况下也能显著提高电压稳定裕度。
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引用次数: 2
BER analysis of MIMO-Wimax system using orthogonal space time block codes 基于正交空时分组码的MIMO-Wimax系统误码率分析
Srujana Karri, R. Ramesh, G. Kiran, C. Manikanta, B. Gangadhar
The main aim of this paper is to analyze the achievement of BER in MIMO-WiMAX system using STBC and OSTBC. With increase the demand of high data rates in recent mobile radio technology We are using MIMO WiMAX system for long distance data transmission and increases system performance as well as data rate. This MIMO-WIMAX process can be simulated by using MATLAB. This achievement can be accomplished by using Alamouti, MRC and orthogonal-Space Time Block Code(OSTBC) for different modulation schemes(QPSK, BPSK, PSK, 16-QAM) under different channel circumstances like AWGN and Rayleigh for various diversity schemes alike Alamouti(2×1), MRC(1×2), OSTBC (2×2) and OSTBC(4×1).
本文的主要目的是分析在MIMO-WiMAX系统中使用STBC和OSTBC实现误码率。随着最近移动无线电技术对高数据速率的需求增加,我们正在使用MIMO WiMAX系统进行长距离数据传输,提高了系统性能和数据速率。该MIMO-WIMAX过程可以用MATLAB进行仿真。这一成就可以通过在不同信道环境下使用Alamouti、MRC和正交空时块码(OSTBC)来实现(QPSK、BPSK、PSK、16-QAM),如AWGN和Rayleigh,用于各种分集方案,如Alamouti(2×1)、MRC(1×2)、OSTBC(2×2)和OSTBC(4×1)。
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引用次数: 3
Hand gesture real time paint tool-box: Machine learning approach 手势实时绘制工具箱:机器学习方法
Vandit Gajjar, Viraj Mavani, Ayesha Gurnani
With current development universally in computing, now a day's user interaction approaches with mouse, keyboard, touch-pens etc. are not sufficient. Directly using of hands or hand gestures as an input device is a method to attract people with providing the applications, through Machine Learning and Computer Vision. Human-computer interaction application in which you can simply draw different shapes, fill the colors, moving the folder from one place to another place and rotating your image with rotating your hand gesture — all this will be without touching your device only. In this paper Machine Learning based hand gestures recognition is presented, with the use of Computer Vision different types of gesture applications have been created.
随着计算机技术的普遍发展,如今仅靠鼠标、键盘、触控笔等用户交互方式已经远远不够了。通过机器学习和计算机视觉,直接使用手或手势作为输入设备是一种吸引人们提供应用程序的方法。人机交互应用程序,你可以简单地绘制不同的形状,填充颜色,移动文件夹从一个地方到另一个地方,旋转你的图像与旋转你的手势-所有这些都将不需要触摸你的设备。本文提出了基于机器学习的手势识别,并利用计算机视觉创建了不同类型的手势应用程序。
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引用次数: 8
The role of cloud computing infrastructure elasticity in energy efficient management of datacenters 云计算基础设施弹性在数据中心节能管理中的作用
Saikishor Jangiti, V. Sriram, R. Logesh
Cloud Computing is growing its customer base due to its pay per use model of leased computational resources as well as software services. Along with the rapid growth of cloud computing adoption, the energy consumed by cloud computing infrastructure is growing. There is an urgent need for the research on the energy efficiency of cloud computing infrastructure. We reviewed the key technologies and techniques which will support and enhance the energy efficiency of cloud computing infrastructure and makes cloud a sustainable model. Virtualization, elasticity, and energy-efficiency are three important attributes of cloud and its infrastructure; we studied the interdependencies of these techniques and addressed few questions related to their interdependencies.
由于租用计算资源和软件服务的按次付费模式,云计算的客户群正在不断增长。随着云计算采用的快速增长,云计算基础设施消耗的能源也在增长。对云计算基础设施的能源效率进行研究是迫切需要的。我们回顾了支持和提高云计算基础设施能源效率的关键技术和技术,并使云成为可持续发展的模式。虚拟化、弹性和能源效率是云及其基础设施的三个重要属性;我们研究了这些技术的相互依赖性,并解决了一些与它们的相互依赖性相关的问题。
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引用次数: 9
Bridging social media to E-Commerce: Using collaborative filtering product recommendation 连接社会媒体与电子商务:使用协同过滤产品推荐
A. Karthikeyan, K. Somasundaram, M. Mahendran, S. Yogadinesh
Numerous online business sites bolster the component of social login where clients can sign on the sites utilizing their interpersonal organization personalities, for example, their Facebook or Twitter accounts. Clients can likewise post their recently obtained items on micro blogs with connections to the internet. We propose a novel answer for cross-site cold start item suggestion which expects to prescribe items from web based business sites to clients at long range interpersonal communication destinations in “cold start” circumstances, a issue which has once in a while been investigated some time recently. A noteworthy point in this paper is friend request module and similar life style grouping and also the product recommendation during cold start situation. In particular, we propose learning both clients' and items' component portrayals (called client embeddings and item embeddings, separately) from information gathered from online business sites.
许多在线商业网站支持社交登录组件,客户可以使用他们的人际组织个性登录网站,例如,他们的Facebook或Twitter帐户。客户也可以在微博上发布他们最近获得的物品,并与互联网连接。对于跨站点冷启动项目建议,我们提出了一种新颖的解决方案,即期望在“冷启动”情况下,从基于web的商业站点向远程人际交流目的地的客户提供项目,这是最近一段时间内偶尔研究的问题。本文中值得注意的是好友请求模块和相似生活方式的分组,以及冷启动情况下的产品推荐。特别是,我们建议从在线商业网站收集的信息中学习客户和项目的组件描述(分别称为客户嵌入和项目嵌入)。
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引用次数: 2
Real-time remote monitoring and automated control of granary environmental factors using wireless sensor network 利用无线传感器网络对粮仓环境因素进行实时远程监测和自动化控制
M. Onibonoje, T. Olowu
The economic importance of agricultural grains makes it imperative to constantly monitor the conditions of the stored grains for timely response to possible deterioration in real time. Most various measures previously adopted were observed to be deficient in steadiness of real-time monitoring and automatic control operability. This paper presents the use of a wireless sensor network to monitor in real-time the variation in temperature, humidity and light illumination parameters affecting stored agricultural grains and automatically initializing control measure for the effect whenever necessary. This work used adequately characterized sensing devices, intelligent XBee transceiver, well-selected and modified Arduino platforms, modified mesh topology and four-relay port module to implement the end nodes and the coordinating hub. The end node characterization achieved a good agreement with the reference study and the accuracy of the real-time monitoring of the system was above 96%. It is concluded that it is feasible to achieve the real-time monitoring and automated control of environmental factors in granary system using wireless sensor network.
农用粮食在经济上的重要地位,要求对其储粮状况进行实时监测,及时应对可能出现的变质情况。以往采取的各种措施大多缺乏实时监测的稳定性和自动控制的可操作性。本文介绍了利用无线传感器网络实时监测影响储粮的温度、湿度和光照参数的变化,并在必要时自动初始化控制措施。本工作采用充分表征的传感器件、智能XBee收发器、精心选择和改进的Arduino平台、改进的网状拓扑和四中继端口模块来实现终端节点和协调集线器。末端节点表征与文献研究结果吻合较好,系统实时监测准确率达96%以上。结果表明,利用无线传感器网络实现粮仓系统环境因素的实时监测和自动化控制是可行的。
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引用次数: 14
A comparison of filtering and enhancement methods in malignant melanoma images 恶性黑色素瘤图像滤波与增强方法的比较
R. Hemalatha, Bincy Babu, A. Dhivya, T. Thamizhvani, Josline Elsa Joseph, R. Chandrasekaran
Skin cancer defined as the uncontrolled growth of cells in the skin. Malignant melanoma is a type of skin cancer formed due to the abnormal growth of the melanocytes that produce melanin pigments. The main aim is to analyze the preprocessing techniques for enhancement of the malignant melanoma images from the authorized PH2 database. Image enhancement techniques such as histogram equalization, adaptive histogram equalization, contrast stretching, and unsharp masking for the adjustment of the pixels in the image and the filtering technique in which different filters such as median, adaptive median, Gaussian and wiener are used for the removal of the unwanted details from the image are comparatively studied with the help of the histogram and peak signal to noise ratio. Histogram defines the pixel variations or alterations in the resultant image after pre-processing. Statistical parameters like mean and standard deviation are derived for the PSNR values of the enhancement and filtering methods. From the results obtained, a comparative study of the enhancement and filtering methods in malignant melanoma images is performed.
皮肤癌被定义为皮肤细胞不受控制的生长。恶性黑色素瘤是由于产生黑色素的黑色素细胞异常生长而形成的一种皮肤癌。主要目的是分析来自PH2授权数据库的恶性黑色素瘤图像的预处理技术。对比研究了直方图均衡化、自适应直方图均衡化、对比度拉伸、不锐利掩蔽等图像增强技术对图像中像素进行调整,并结合直方图和峰值信噪比,比较研究了使用中值、自适应中值、高斯和维纳等不同滤波器去除图像中不需要的细节的滤波技术。直方图定义了预处理后生成的图像中像素的变化或改变。推导了增强和滤波方法的PSNR值的均值和标准差等统计参数。根据所获得的结果,对恶性黑色素瘤图像的增强和滤波方法进行了比较研究。
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引用次数: 4
Simulation and experimental measurement of shaft voltage, bearing current in induction motor drive 感应电机驱动中轴电压、轴承电流的仿真与实验测量
S. Chandrashekar, A. Ramachandran, M. C. Reddy
Generally the Induction Motor (IM) is considered to be a constant speed motor. But due to the advances in Power electronics, the IM speed can be controlled within limits. For efficient operation, the 2-level inverter with Pulse Width Modulation (PWM) can be used. However, in this method the inverter output will not be sinusoidal. It will be a stepped square wave, due to that the voltage at the star point of the IM stator winding will not be zero, hence there exists a voltage with respect to the common ground. This is known as Common Mode Voltage (CMV). The CMV will induce a voltage in the rotor shaft; there by a current will flow to the common ground via the bearing. Due to the flow of current through the bearing the electrical discharge machining (EDM) will takes place at the inner race of the bearing. Hence the life of the bearing will get reduced. To minimize the effect of shaft voltage and bearing current a 3-level inverter can be used. The 3-level inverter output will produce less shaft voltage and bearing current when compared to 2-level inverter. In this paper the authors have done both the 2-level and 3-level inverter for running the IM. The Arduino Microcontroller is used for generating the Space Vector Modulation (SVM) signals and the necessary isolation has been done using opto-isolators. Simulation has been done using MATLAB/Simulink and the results are verified with the experimental results. The Fast Fourier Transform (FFT) has been done for the experimentally recorded shaft voltage and the bearing current for the 2-level and 3-level inverter outputs by using signal analysis software. The experimental and simulated results are compared.
一般认为感应电动机(IM)是一种恒速电动机。但由于电力电子技术的进步,IM速度可以控制在一定范围内。为了高效运行,可以使用带脉宽调制(PWM)的2电平逆变器。然而,在这种方法中,逆变器输出将不是正弦的。它将是一个阶跃方波,由于在IM定子绕组星点处的电压不会为零,因此存在一个相对于共地的电压。这被称为共模电压(CMV)。CMV将在转子轴上感应电压;在那里,电流将通过轴承流到公共地。由于电流通过轴承的流动,电火花加工(EDM)将发生在轴承的内圈。因此,轴承的寿命将减少。为了尽量减少轴电压和轴承电流的影响,可以使用3级逆变器。与2级逆变器相比,3级逆变器输出将产生更少的轴电压和轴承电流。在本文中,作者做了2电平和3电平的逆变器来运行IM。Arduino微控制器用于生成空间矢量调制(SVM)信号,并使用光隔离器完成了必要的隔离。利用MATLAB/Simulink进行了仿真,并与实验结果进行了验证。利用信号分析软件对实验记录的2电平和3电平逆变器输出的轴电压和轴承电流进行了快速傅里叶变换(FFT)。对实验结果和仿真结果进行了比较。
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引用次数: 3
Allocating resource on multiple user basis in OFDMA systems by using regenerative algorithm 基于再生算法的OFDMA系统多用户资源分配
S. Swaminathan, N. R. Raajan
The main objective of our paper is to increase the throughput and fairness index and to decrease the power level. At most prioroty is to Provide very high data rate and coverage in forth co ming generation wireless networks. We propose regenerative algorithm in order to avoid work load balancing in memory. Joint al-location of resources using Auction-based algorithms, namely profiles of power at the source node as well as relay nodes and hence subcarrier assignment profile for multiple users amplify and forward orthogonal frequency division multiple access systems. It is based on either the marginal or relative marginal increase of data rate uing the subcarrier, each user is said to submit a bid and this acts as the base for the first algorithm which is based on sequential single item auction. The first bidding techniques is said to maximize the sum data rate While the second bidding strategy is said to maximize the index of fairness. In the dual cases, the user who submits the highest bid is assigned with the subcarrier. The algorithm is said to proceed in a sequential fashion while and until all subcarriers are left assigned. In order that reducing the synchronized interactions between the base-station and the users, here proposed is a one-shot auction algorithm, where each user submits bids for all subcarriers only once based on the Shapley value, a familiar cooperative-game theoretic concept. Depending on an estimation of the Shapley value, the user is said to evaluate each subcarrier. Based on the bids submitted and by using an iterative algorithm that enhances the fairness index, the subcarriers are assigned. To evaluate the performance of the proposed algorithms, hroughput and fairness indices are used. In order to reduce workload balance in the sensor memory, here proposed is a regenerative algorithm, where each user's data need to be stored in the memory. Numerical results are used to show the merits of each algorithm.
本文的主要目标是提高吞吐量和公平性指标,降低功耗。在下一代无线网络中,最优先考虑的是提供非常高的数据速率和覆盖范围。为了避免工作负载在内存中平衡,我们提出了再生算法。利用基于拍卖的算法对资源进行联合定位,即源节点和中继节点的功率分布,从而实现多用户放大和转发正交频分多址系统的子载波分配分布。它基于使用子载波的数据速率的边际或相对边际增长,每个用户都被称为提交一个出价,这作为基于顺序单项目拍卖的第一种算法的基础。第一种投标技术被称为最大化数据速率总和,而第二种投标策略被称为最大化公平性指数。在这两种情况下,出价最高的用户被分配给子运营商。该算法以顺序方式进行,直到所有子载波都被分配。为了减少基站与用户之间的同步交互,本文提出了一种基于Shapley值(一种常见的合作博弈论概念)的单次竞价算法,即每个用户只对所有子载波提交一次竞价。根据Shapley值的估计,用户被称为评估每个子载波。基于所提交的投标,采用提高公平性指数的迭代算法,分配子载波。为了评估所提出算法的性能,使用了吞吐量和公平性指标。为了减少传感器内存中的工作负载平衡,本文提出了一种再生算法,其中每个用户的数据都需要存储在内存中。数值结果显示了每种算法的优点。
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引用次数: 1
MEMS based optical phase modulator using directional coupler 基于MEMS的定向耦合器光相位调制器
Trishna Khanna, Deepak Bhatia
Continuous growing demand of real time computing originate frequent need of much faster processors than those are already available. There is a prompt evolution of new optical communication related application and components to fulfill these requirements. The attempt of combining these two methods leads to the generation of optoelectronic devices. The new device is MEMS based nanoscale silicon on insulator photo activated modulator using directional coupler. The design, simulation & characterization of an optoelectronic device based on Si which is capable of speeding up the processing capabilities have been presented in this paper. In this control command is sent optically and the nature of data flow is electronic. Faster operation rates are expected with the device. This optical device can serve as a building block of optical data processing while breaking through the way to all optic processors based on Si chips.
实时计算需求的持续增长导致对比现有处理器更快的处理器的频繁需求。为了满足这些需求,新的光通信相关应用和组件正在迅速发展。将这两种方法结合起来的尝试导致了光电器件的产生。新器件是基于MEMS的纳米硅绝缘体光激活调制器,采用定向耦合器。本文介绍了一种基于硅的光电器件的设计、仿真和性能表征,该器件能够提高处理速度。在此控制命令是光发送的,数据流的性质是电子的。该设备有望实现更快的运行率。该光器件可作为光数据处理的基石,突破了所有基于硅片的光处理器的发展道路。
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引用次数: 0
期刊
2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI)
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