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

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Analysis of EEG signals using empirical mode decomposition and support vector machine 基于经验模态分解和支持向量机的脑电信号分析
Kaushik Das, Rajkishur Mudoi
This paper presents a method for the detection of epileptic seizure from electroencephalogram (EEG) signals in the empirical mode decomposition (EMD) domain. Here we have used statistical moments like variance, skewness and kurtosis and non linear measures like sample entropy and approximate entropy on the intrinsic mode functions (IMFs), which are obtained by doing empirical mode decomposition on normal, interictal and ictal EEG signals. The intrinsic mode functions which are generated by the EMD method can be considered as a set of amplitude and frequency modulated signals. For classification the calculated features are feed to a support vector machine and the effectiveness of the proposed method is studied using a dataset which is available online. In the dataset we have considered three states namely normal, interictal and ictal. The proposed method gives an accuracy of 100% for the classification of normal and ictal as well as interictal and ictal EEG signals.
本文提出了一种基于经验模态分解(EMD)域的脑电图信号检测癫痫发作的方法。在这里,我们使用了方差、偏度和峰度等统计矩,以及样本熵和近似熵等非线性测度,这些测度是通过对正态、间隔和间隔脑电图信号进行经验模态分解得到的。EMD方法产生的本征模态函数可以看作是一组调幅调频信号。将计算出的特征输入到支持向量机中进行分类,并利用在线数据集研究了该方法的有效性。在数据集中,我们考虑了三种状态,即正常状态、间隔状态和临界状态。该方法对正常、骤停、间歇、骤停脑电信号的分类准确率达到100%。
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引用次数: 2
Performance comparison of IDD controller with SSSC to that with TCPS for damping oscillations in AGC 采用SSSC的IDD控制器与采用TCPS的IDD控制器在AGC中阻尼振荡的性能比较
S. S. Singh, Ksh. Tompok Singh, Bharathikoppaka
In this paper, a new classical controller called as Integral Double Derivative Controller (IDD) in coordination with Static Synchronous Series Compensator (SSSC) and Thyristor controlled phase shifter (TCPS) is applied for the first time in automatic generation control (AGC) system. Comparative studies on the performance of IDD controller — SSSC and IDD controller — TCPS is carried out for load-frequency control (LFC) of two-area interconnected thermal reheat power system. The study is carried out considering appropriate generation rate constraints (GRC). A new meta-heuristic search algorithm called as Cuckoo Search (CS) is utilized for finding optimal designing parameters using Integral squared error technique (I.S.E). Critical examination of the dynamic responses of area frequency, tie power and generated power reveals that dynamic responses have improved further with the use of SSSC as compared to those with TCPS. It can be observed that the oscillations in area frequency, tie-power and generated power deviations have decreased to a considerable extent as compared to that of the system with TCPS. Further it is evident that IDD controller with SSSC gives far better performance than IDD with TCPS even in higher degree of perturbation in terms of oscillations and settling time.
本文首次将一种新的经典控制器——积分双导数控制器(IDD)与静态同步串联补偿器(SSSC)和晶闸管控制移相器(TCPS)协同应用于自动发电控制系统。对两区互联热再热电力系统的负载-频率控制(LFC)进行了IDD控制器- SSSC和IDD控制器- TCPS的性能比较研究。该研究考虑了适当的发电速率约束(GRC)。利用积分平方误差技术(I.S.E),提出了一种新的元启发式搜索算法——布谷鸟搜索(Cuckoo search, CS)来寻找最优设计参数。对区域频率、发电功率和发电功率的动态响应进行的严格检查表明,与使用tps相比,使用SSSC进一步改善了动态响应。可以观察到,与有TCPS的系统相比,区域频率、连接功率和产生功率偏差的振荡都有相当程度的减小。此外,很明显,即使在振荡和稳定时间方面的扰动程度较高,具有SSSC的IDD控制器也比具有TCPS的IDD控制器具有更好的性能。
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引用次数: 1
Determining the optimal range of angle tracking radars 确定跟踪雷达的最佳角度范围
M. Khosravi, S. Samadi, O. Akbarzadeh
In this paper, we determine an optimal range for angle tracking radars (ATRs) based on evaluating the standard deviation of all kinds of errors in a tracking system. In the past, this optimal range has often been computed by the simulation of the total error components; however, we are going to introduce a closed form for this computation which allows us to obtain the optimal range directly. Thus for this purpose, we firstly solve an optimization problem to achieve the closed form of the optimal range (Ropt.) and then, we compute it by doing a simple simulation. The results show that both theoretical and simulation-based computations are similar to each other.
本文在评估跟踪系统中各种误差的标准差的基础上,确定了角度跟踪雷达的最优距离。在过去,这个最优范围通常是通过模拟总误差分量来计算的;然而,我们将引入一个封闭的计算形式,它允许我们直接获得最优范围。为此,我们首先求解一个优化问题,得到最优范围(Ropt.)的封闭形式,然后通过简单的仿真进行计算。结果表明,理论计算和仿真计算结果基本一致。
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引用次数: 10
An effective storage management in a twin cloud architecture using an authorized deduplication technique 使用授权的重复数据删除技术,在双云架构中实现有效的存储管理
Rasika V. Gode, R. Dalvi
Data deduplication is the technique of reduction in the data which keeps only one physical copy and generates pointers to that copy for referencing other redundant data. To secure the confidentiality of private data throughout deduplication, the convergent cryptography technique is used to encode the information before uploading it onto the general public cloud. In our paper, we've got an inclination to present the deduplication-aware resemblance detection and elimination (DARE) scheme that supports authorization in twin cloud surroundings. This scheme uses a duplicate-adjacency info for likeness detection wherever we've got to consider any 2 information blocks to be similar provided that their respective adjacent information blocks are duplicate. Our proposed system achieves deduplication on encrypted data with minimum overhead and also enhances the security by providing authorization in hybrid cloud environment.
数据重复删除是一种减少数据的技术,它只保留一个物理副本,并生成指向该副本的指针,以引用其他冗余数据。为了在重复数据删除过程中确保私有数据的机密性,在将信息上传到通用公共云之前,使用融合加密技术对信息进行编码。在本文中,我们倾向于提出支持双云环境下授权的重复数据删除感知相似性检测和消除(DARE)方案。该方案使用重复邻接信息进行相似性检测,无论我们必须考虑任何两个信息块相似,只要它们各自的相邻信息块是重复的。我们提出的系统以最小的开销实现了对加密数据的重复数据删除,并通过在混合云环境中提供授权来增强安全性。
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引用次数: 2
Comparison of various window techniques for design FIR digital filter FIR数字滤波器设计中各种窗口技术的比较
Anshul, Kavita Rathi
There are many digital signal processing applications in which digital filters are used. Signals are used for transmitting the data from source to destination. Then there is high possibility of signal deformation due to external noise. So to get the original signal at destination we used filters. Filters are used to remove the undesired frequencies from applied signal. In the paper, the definition, types and various methods of FIR digital filter are studied. This paper presented the different techniques of designing of filters and then compared.
在许多数字信号处理应用中都要用到数字滤波器。信号用于将数据从源传输到目的。那么,由于外部噪声的影响,信号变形的可能性很大。为了在目的地得到原始信号,我们使用了滤波器。滤波器用于从施加的信号中去除不需要的频率。本文研究了FIR数字滤波器的定义、类型和各种方法。本文介绍了各种滤波器的设计方法,并进行了比较。
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引用次数: 3
A novel fuzzy based transformer less PV inverter for reactive power control in grid connected PV system 一种用于并网光伏系统无功控制的新型模糊无变压器逆变器
P. Suresh, T. Manohar
With worldwide increasing demand for electric energy, there has been a great interest in exploring photovoltaic (PV) sources. In recent years, there have been quite a few new transformerless PV inverters topologies, which eliminate the traditional line frequency transformers to achieve lower cost and higher efficiency, and maintain reduced leakage current as well. However, one of the technical difficulties of the transformerless inverter is the safety issue of leakage current. The leakage current through the stray capacitors between the PV array and the ground is harmful because of unstable common mode voltage and absence of galvanic isolation. This leakage current that flows between the parasitic capacitance of PV array and the grid has to be eliminated, may otherwise leads to major safety problems. In addition, according to the international regulations, transformerless inverter should be capable of handling a certain amount of reactive power. Here, a newly proposed transformerless inverter for grid tied PV system can eliminate the threat of leakage current. The proposed topology also has the ability to inject reactive power into the utility grid. Fuzzy logic controller and PR controller is used to ensure high quality injected current to the grid. Detailed analysis of proposed transformerless inverter with operation modes of common mode, leakage current analysis and reactive power control capability in MATLAB simulation model are presented.
随着世界范围内对电能需求的不断增长,人们对开发光伏能源产生了极大的兴趣。近年来,出现了不少新的无变压器光伏逆变器拓扑结构,这些拓扑结构消除了传统的线频变压器,以实现更低的成本和更高的效率,并保持较小的泄漏电流。然而,无变压器逆变器的技术难点之一是漏电流的安全问题。由于共模电压不稳定和缺乏电流隔离,光伏阵列与地之间的杂散电容产生的漏电流是有害的。这种在光伏阵列寄生电容和电网之间流动的漏电流必须消除,否则可能导致重大安全问题。此外,根据国际规定,无变压器逆变器应能够处理一定的无功功率。本文提出了一种用于并网光伏系统的无变压器逆变器,可以消除漏电流的威胁。所提出的拓扑结构还具有向公用电网注入无功功率的能力。采用模糊控制器和PR控制器,保证了高质量的电网注入电流。对所提出的共模无变压器逆变器进行了详细的分析,并在MATLAB仿真模型中进行了漏电流分析和无功功率控制能力分析。
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引用次数: 1
Transformerless grid tied inverter using neutral point clamped full bridge topologies and hybrid filter for THD reduction 无变压器并网逆变器采用中性点箝位全桥拓扑和混合滤波器的THD降低
Ujwal Gajula, R. Reddy
In photovoltaic applications, it is possible to remove the transformer in the inverter to reduce losses, costs, and size. Galvanic connection of the grid and the dc sources in transformer less systems can introduce additional ground currents due to the ground parasitic capacitance. The leakage current has to be tackled carefully for such type of inverter topologies. Neutral point clamped (NPC) topology is an effective way to eliminate the leakage current. A universal prototype for these three NPC-type topologies is built to evaluate the topologies at conversion efficiency and the leakage current characteristic. The PN-NPC topology exhibits similar leakage current with the FB-DCBP, which is lower than that of the oH5 topology, and features higher efficiency than both the oH5 and the FB-DCBP topologies. Total harmonic distortion of NPC topologies will get better with Hybrid filters.
在光伏应用中,可以移除逆变器中的变压器,以减少损耗、成本和尺寸。在无变压器系统中,由于地寄生电容的存在,电网与直流电源的电连接会引入额外的地电流。对于这种类型的逆变器拓扑结构,必须仔细处理泄漏电流。中性点箝位(NPC)拓扑结构是消除漏电电流的有效方法。建立了这三种npc型拓扑的通用原型,以评估拓扑的转换效率和泄漏电流特性。PN-NPC拓扑的漏电流与FB-DCBP相似,但低于oH5拓扑,效率高于oH5和FB-DCBP拓扑。混合滤波器可以改善NPC拓扑的总谐波畸变。
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引用次数: 0
A review of secure medical image watermarking 安全医学图像水印技术综述
Garima Singh
The advanced development in the field of web technology has enabled to use medical images and Electronics Patient Record (EPR) in the healthcare sector for the purpose of sharing patient information between networked hospitals and healthcare centers. As an EPR may carry important information which requires the guarantee of security, authenticity and management of medical images and information through storage and distribution. Digital watermark can be considered as an efficient technology to address the difficulties of unauthorized access of medical content which is to be distributed on the internet. The watermarking techniques are growing to protect the medical healthcare information. This is a technique for embedding the EPR information in the medical image to save storage space and transmission overheads and to guarantee security of the medical content which is to be shared over the network. In this paper, we have given the review of several approaches which has been proposed by various authors.
网络技术领域的先进发展使医疗保健部门能够使用医疗图像和电子病历(EPR),以便在联网医院和医疗保健中心之间共享患者信息。由于电子病历可能携带重要信息,因此需要通过存储和分发来保证医学图像和信息的安全性、真实性和管理性。数字水印可以被认为是一种有效的技术,可以解决医疗内容在互联网上分发的未经授权访问的困难。为了保护医疗保健信息,水印技术得到了广泛的应用。这是一种将EPR信息嵌入到医学图像中的技术,目的是为了节省存储空间和传输开销,保证通过网络共享的医疗内容的安全性。在本文中,我们对不同作者提出的几种方法进行了综述。
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引用次数: 8
Non dominated sorting based multi objective GSA for solving optimal power flow problems 基于非支配排序的多目标GSA求解最优潮流问题
A. Bhowmik, A. Chakraborty
This paper presents the solution of different optimal power flow (OPF) problems using non dominated sorting based multi objective gravitational search algorithm (NSMOGSA). OPF problem is formulated as a non-linear constrained optimization problem where different objectives and various constraints have been considered into the formulation. To show the effectiveness of the proposed algorithm, it has been tested on a standard IEEE 30-bus system with two different individual objectives that reflect active power loss minimization and fuel cost minimization with valve point loading effect. The performance of NSMOGSA is compared with the results found by other meta-heuristic techniques reported in the recent literature. Numerical results demonstrate the tangible superiority of the proposed method in achieving the optimum OPF solution.
提出了基于非支配排序的多目标引力搜索算法(NSMOGSA)求解各种最优潮流问题的方法。将OPF问题表述为一个考虑了不同目标和约束条件的非线性约束优化问题。为了证明该算法的有效性,在一个标准的IEEE 30总线系统上进行了测试,该系统具有两个不同的独立目标,反映了具有阀点负载效应的有功功率损耗最小化和燃料成本最小化。将NSMOGSA的性能与最近文献中报道的其他元启发式技术的结果进行了比较。数值结果表明,该方法在求解最优OPF问题上具有明显的优越性。
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引用次数: 0
Survey of different techniques involved in library management services 图书馆管理服务中涉及的不同技术的调查
B. Geetha, V. Perumal
The consumption and reduction in manual work are the main motive of automation. Accessing a book depending upon the availability by an user is a tedious task. If there is a system which notify the availability of the book then there prevails time consumption and the user opts for an alternate. For the above process to be achieved, the system must comprise of RFID system installed in each rack. The books present at the rack comprises of unique information such as title, author, ISBN code, etc. These RFID antennas readily send information regarding the books to the OPAC(Open Public Access Catalogue). When the book has been taken from the smart rack, then a notification regarding the availability of the book. Each and every book placed in the book rack comprises of unique information regarding the book such as title, ISBN code, etc. The RFID system is connected along with the OPAC (Online Public Access Catalog). When a book has been accessed by an user, the RFID sensor senses it and immediately notify the information to the OPAC. The decrease in the number of book and the missing of the particular book is identified by the RFID system. Thus there will be a change in the status in the OPAC system regarding the availability of the book from “Available” to “Engaged”.
人工劳动的消耗和减少是自动化的主要动机。根据用户的可用性访问一本书是一项乏味的任务。如果有一个系统通知书的可用性,那么就会占用时间,用户会选择另一个系统。为了实现上述过程,系统必须包括安装在每个机架上的RFID系统。摆在书架上的书由独特的信息组成,如标题、作者、ISBN代码等。这些RFID天线可以随时将有关图书的信息发送到OPAC(开放公共访问目录)。当书从智能书架上取出时,就会收到关于书是否可用的通知。放在书架上的每一本书都包含关于这本书的唯一信息,如标题、ISBN代码等。RFID系统与OPAC(在线公共访问目录)一起连接。当用户访问一本书时,RFID传感器会感应到它,并立即将信息通知OPAC。图书数量的减少和特定图书的丢失由RFID系统识别。因此,OPAC系统中关于书的可用性的状态将从“可用”变为“已使用”。
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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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