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Implementing Labview Based LevelController 基于Labview的LevelController实现
P. Patil, Nitesh Dongare, P. Bane, A. Merchant, Ankit Pitla
The aim of our project is to design the PID controller using LabVIEW. The designing software use for this purpose is LabVIEW developed by National Instruments. We also intend to use a DAQ card by ADAM model 4022T and also USB to RS485 converter UD2535-U of milestone for interfacing computer with the hardware. The hardware is a Multiloop Trainer Kit mounted with a tank whose level has to be controlled using a feedback control loop. The feedback control loop is form by a tank, level sensor, controller, I to P converter and control valve. The designed soft PID controller will replace the electronic PID on trainer loop kit.
本课题的目的是利用LabVIEW设计PID控制器。为此所使用的设计软件是美国国家仪器公司开发的LabVIEW。我们还打算使用ADAM型号4022T的DAQ卡和里程碑的USB到RS485转换器UD2535-U,用于将计算机与硬件接口。硬件是一个多回路训练器套件,安装有一个坦克,其水平必须使用反馈控制回路进行控制。反馈控制回路由油箱、液位传感器、控制器、I - P转换器和控制阀组成。所设计的软PID控制器将取代训练器回路套件上的电子PID。
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引用次数: 1
A Low Order System Frequency ResponseModel for Large Power System and AdaptiveLoad Shedding 大型电力系统低阶系统频率响应模型及自适应减载
K. Shah, Darshit S. Patel
Now a days electrical system becomes very much large and Power demand will be increasing more and more. To satisfy the power demand nonconventional sources are incorporated in the field of electrical power generation and the system becomes Inter connected. Large power system disturbances sometimes causes interconnected system to become separated into some islands and it has either surplus of generation or load. If generation is more than it can be controlled by controlling the speed of speed governors connected with the generating station will result into change in frequency. This paper includes the derivation of simple low order system frequency response (SFR) model that can be used for estimating the frequency behaviour of the interconnected power system to sudden load disturbances. The SFR model is the simplify model to analyse system dynamics.
如今,电力系统变得非常庞大,电力需求将越来越大。为了满足电力需求,在发电领域引入了非常规电源,实现了系统互联。电力系统的大扰动有时会使互联系统分离成若干个孤岛,这些孤岛要么有剩余的发电,要么有剩余的负荷。如果发电量大于,可以通过控制与电站连接的调速器的转速来控制,从而导致频率的变化。本文推导了一个简单的低阶系统频率响应模型,该模型可用于估计电力系统在突然负荷扰动下的频率特性。SFR模型是分析系统动力学的简化模型。
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引用次数: 1
Image Steganography using Variable KeyTechnique for Double Tier Security 利用可变密钥技术实现双层安全的图像隐写
Khushboo Jain, Amrit Kaur
In this Paper, before applying the Steganography technique the secret message change into cipher to ensure the double tier security. In the Proposed technique the encrypted data is hidden in cover image using Modified LSB Technique. The Mean Square Error (MSE) and Peak Signal Noise Ratio (PSNR) measures the Imperceptibility of the proposed technique. Experimental results show that the Stego image is usually indistinguishable from the cover image.
本文在采用隐写技术之前,先将秘密信息转换成密码,以保证双层安全性。该技术采用改进的LSB技术将加密后的数据隐藏在封面图像中。均方误差(MSE)和峰值信噪比(PSNR)衡量了所提出技术的不可感知性。实验结果表明,隐去图像通常与封面图像难以区分。
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引用次数: 0
Pipeline Inspection and Borewell RescueRobot 管道检查和钻井救援机器人
B. Preeti, Borchate Trupti, Chavan Prajakta, V.A.Kulakarni
The aim of this proposed system is to give an innovative concept to handle the bore well rescue operations without human intervention and to inspect any type of leakage in the pipe. Normal operation of child rescue is done by using big machines with large manpower involvement. It takes more time to rescue a child from the bore well and to check any kind of irregularities in pipe. The three finger mechanisms are employed in this design to go inside the pipe. The three finger mechanism is circumferentially and symmetrically spaced out 120o apart. The robot is made adaptive so that it can adjust its three finger mechanism according to the pipeline dimensions. This structural design makes it possible to have the adaptation to the diameter of pipe and to have adjustable attractive force towards the walls of pipe. In this proposed system, the condition of trapped child is captured with USB Camera and monitored on laptop. LM-35 Temperature Sensor is interfaced with Atmega 16 microcontroller to sense the temperature inside the bore well and to display it on terminal display on laptop. The robot structure consists of power supply, development board of atmega 16 and gear motors. Adding a claw or gripper was the initial hurdle for which additional power supply and DC gear motor were needed. The proposed system is intended to reduce the risk involved during the child rescue operation by analysing the situation and also to provide an option detect any leakage inside the pipe.
该系统的目的是提供一个创新的概念,在没有人为干预的情况下处理井眼救援作业,并检查管道中的任何类型的泄漏。儿童救援的正常操作是使用大型机器,需要大量人手。从井中救出孩子和检查管道中的任何不规则情况都需要更多的时间。本设计采用三指机构进入管道内部。三指机构是圆周和对称间隔1200。该机器人具有自适应性,可以根据管道尺寸调整其三指机构。这种结构设计使得对管径的适应性和对管壁的吸引力可调成为可能。在该系统中,通过USB摄像头捕捉被困儿童的状态,并在笔记本电脑上进行监控。LM-35温度传感器与atmega16微控制器接口,可感知井内温度,并在笔记本电脑的终端显示器上显示。机器人结构由电源、atmega16开发板和齿轮电机组成。添加爪或夹爪是最初的障碍,需要额外的电源和直流齿轮电机。拟议的系统旨在通过分析情况来减少儿童救援行动中涉及的风险,并提供检测管道内任何泄漏的选项。
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引用次数: 2
A New Cascaded 2-Level Inverter basedSTATCOM for High Power Applications 基于statcom的高功率级联2电平逆变器
M. Abinaya, L.Priyanga, T. S. Padmanabhan, T.Heman
This paper presents a simple STATCOM scheme using a cascaded two-level inverter-based multilevel inverter. The proposed topologies have two VSI based two-level inverters are connected in cascade through open-end windings of a three-phase transformer and filter elements. Converter fed dc-link voltages is regulates at different levels to obtain four-level operation. The proposed STATCOM multilevel inverter has operates under MATLAB/SIMULINK environment and the results are verified in balanced and unbalanced conditions. Further, stability behavior of the topology is investigated. The dynamic model is developed and transfer functions are derives under different conditions. The system behaviors are analyzing under various operating conditions.
本文提出了一种简单的基于级联双电平逆变器的多电平逆变器的STATCOM方案。所提出的拓扑结构具有两个基于VSI的双电平逆变器,通过三相变压器和滤波器元件的开放式绕组级联连接。变流器直流电压被调节到不同的电平,以获得四电平的工作。所提出的STATCOM多电平逆变器在MATLAB/SIMULINK环境下运行,并在平衡和不平衡条件下对结果进行了验证。进一步研究了该拓扑结构的稳定性行为。建立了动力学模型,推导了不同工况下的传递函数。分析了系统在各种工况下的运行行为。
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引用次数: 0
An Efficient Storage Routing In FutureMobile Architecture 未来移动架构中一种高效的存储路由
S.Sumithra, A.Hena Rubavathy
This thesis presents an investigation of the designand evaluation of the generalized storage aware routing (GSTAR) protocol proposed for use in the Mobility First future Internet architecture. The GSTAR protocol uses innetwork storage to improve service quality and throughput in wireless access networks with varying radio link quality and/or disconnection. These gains are achieved using a combination of short-term buffering at routers to smooth out fluctuations in path quality along with delay-tolerant storage, to overcome total disconnection of the mobile device. The performance of the GSTAR protocol is evaluated for exemplary wireless access network scenarios using ns-3 based simulation models, and key design parameters are investigated. Each node in GSTAR maintains two kinds of topology information. The intrapartition graph contains information about path quality between no des in the current partition of the network. The path quality is determined using two metrics: short term and long term expected transmission time. Every no de compares these two metrics using the store/forward decision threshold and stores the data on finding that the path is degraded with the expectation that it may improve in the future. Inter-partition graph gives a probabilistic view of the connection patterns between no des in the network. It is used in the event of disconnections or partitions. The results show that if link quality fluctuations are random, the moving average scheme works well, while an exponentially weighted moving average is recommended for on-off channels with periodic outages. Simulation results are provided in each case, showing the benefit of adaptive threshold settings over the baseline non-adaptive case considered in earlier work.
本文研究了通用存储感知路由(GSTAR)协议的设计和评估,该协议将用于移动优先的未来互联网架构。GSTAR协议使用网络内存储来提高无线接入网络的服务质量和吞吐量,无线接入网络具有不同的无线电链路质量和/或断开。这些增益是通过路由器的短期缓冲来消除路径质量的波动,以及延迟容忍存储来克服移动设备的完全断开连接来实现的。利用基于ns-3的仿真模型,评估了GSTAR协议在典型无线接入网场景下的性能,并对关键设计参数进行了研究。GSTAR中的每个节点维护两种拓扑信息。分区内图包含了当前网络分区中所有节点之间的路径质量信息。路径质量由两个指标决定:短期和长期预期传输时间。每个no de使用存储/转发决策阈值比较这两个指标,并在发现路径退化并期望它在未来可能得到改善时存储数据。分区间图给出了网络中无节点之间连接模式的概率视图。它用于断开连接或分区的情况。结果表明,当链路质量波动是随机的时,移动平均方案效果较好,而对于周期性中断的开关信道,建议采用指数加权移动平均方案。在每种情况下都提供了模拟结果,显示了自适应阈值设置相对于早期工作中考虑的基线非自适应情况的好处。
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引用次数: 0
On-line Interactive Data Acquisition andControl System for Embedded Real TimeApplications 嵌入式实时应用的在线交互式数据采集与控制系统
Priyanka D. Patil, V. Shete, P. Awate
This paper is about the application of data acquisition systems in industrial requirements for real time execution of events with industrial process control and automation. The main core of the system is an embedded hardware running a scaled-down version of Linux: a popular choice of operating system for embedded applications. On -line embedded web server is a challenging part of many embedded and real time data acquisition and control system applications. The World Wide Web is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billion of users worldwide and allows the user to interface many real time embedded applications like data acquisition, Industrial automations and safety measures etc., In this project we approached towards the design and development of on-line Interactive Data Acquisition and Control System (IDACS) using ARM based embedded web server. It can be a network, intelligent and digital distributed control system. Single chip IDACS method improves the processing capability of a system and overcomes the problem of poor real time and reliability. This system uses ARM9 Processor portability with Linux operating system it makes the system which handling various processes based on multi tasking and reliable scheduling mechanisms. A novel approach is introduced to minimize the operational costs while operating with a large amount of data. The system is demonstrated to be suitable for different embedded applications by attaching several real-time modules through appropriate interfaces. The embedded web server technology is the combination of embedded device and Internet technology, through this embedded web server user can access their equipments remotely. The equipment mentioned here could be home appliances and factory devices. This paper is focused on realization of TCP/IP suite and user development platform for this embedded web server. The embedded web server design includes a complete web server with TCP/IP support and Ethernet interface. Web pages are written by Hyper text markup language (HTML).
本文研究了数据采集系统在工业过程控制和自动化中实时执行事件的应用。该系统的主要核心是一个嵌入式硬件,它运行的是缩小版的Linux:嵌入式应用程序常用的操作系统。在线嵌入式web服务器是许多嵌入式和实时数据采集和控制系统应用中具有挑战性的部分。万维网是一个使用标准互联网协议套件(TCP/IP)为全球数十亿用户提供服务的全球互连计算机网络系统,并允许用户连接许多实时嵌入式应用程序,如数据采集,工业自动化和安全措施等。在这个项目中,我们采用基于ARM的嵌入式Web服务器来设计和开发在线交互式数据采集和控制系统(IDACS)。它可以是一个网络化、智能化、数字化的集散控制系统。单片IDACS方法提高了系统的处理能力,克服了实时性和可靠性差的问题。本系统采用ARM9处理器与Linux操作系统的可移植性,使系统基于多任务和可靠的调度机制来处理各种进程。引入了一种新颖的方法,在处理大量数据时最大限度地降低操作成本。通过适当的接口附加多个实时模块,证明了该系统适用于不同的嵌入式应用。嵌入式web服务器技术是嵌入式设备与Internet技术的结合,用户可以通过嵌入式web服务器远程访问自己的设备。这里提到的设备可以是家用电器和工厂设备。本文重点研究了该嵌入式web服务器的TCP/IP套件和用户开发平台的实现。嵌入式web服务器设计包括一个完整的支持TCP/IP和以太网接口的web服务器。网页是由超文本标记语言(HTML)编写的。
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引用次数: 0
Power Quality Improvement of GridConnected Wind Energy System bySTATCOM-Control Scheme statcom控制方案改善并网风电系统电能质量
M. ShivarajaD, S.Saranya
when the wind power is connected to an electrical grid effects of the power quality. The effects of power quality measurements are the active power, reactive power, variation of voltage, flickers, harmonics and electrical behavior of the switching operation. The installation of the wind turbine with grid causes power quality problems determined by studying this paper. For this static compensator (STATCOM) with a battery energy storage system (BESS) at the point of common coupling to mitigate the power quality problems. The grid connected wind energy generation system for the power quality improvement by using STATCOM control scheme is simulated using SIMULINK power system blocked set. This is relives the main supply source from the reactive power demand of the load and induction generator in this proposed scheme. The improvement in the power quality on the grid has been presented here according to the guidelines specified in IEC-61400 standard (International Electro-technical commission) provides some norms and measurements.
当风力发电连接到电网时,对电能质量产生影响。电能质量测量的影响是有功功率、无功功率、电压变化、闪烁、谐波和开关操作的电气行为。通过本文的研究,确定了风电机组并网安装时产生的电能质量问题。对于静态补偿器(STATCOM),在公共耦合点上采用电池储能系统(BESS)来缓解电能质量问题。利用SIMULINK电力系统阻塞集对并网风力发电系统采用STATCOM控制方案改善电能质量进行了仿真。这减轻了本方案中负荷和感应发电机无功需求的主要供电来源。根据IEC-61400标准(国际电工委员会)提供的一些规范和测量方法,介绍了电网电能质量的改善。
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引用次数: 0
Design of Reliable Custom Topology forApplication Specific Network-On-Chip 面向特定应用的片上网络的可靠自定义拓扑设计
M. Maheswari
In this paper, Reliable custom topology for Application Specific Network-on-Chip (ASNoC) which consumes less area and power consumption with high data protection (error free) is proposed. The proposed design is achieved in two steps. First a custom topology is designed for ASNoC. Second, to improve the reliability of the custom topology, three novel error correction mechanisms have been designed and incorporated in the custom topology. The proposed three error correction codes consume less are and power consumption with high error correction capability compared to the existing error correction codes. Finally the proposed error correction codes are embedded in the custom topology to generate reliable custom topology. Cadence RTL encounter tool has been used for the analysis. The generated custom topology achieves 90% & 40% reliability improvement on data through on chip inter connects in low noise and in high noise environment respectively.
本文提出了一种适用于专用片上网络(Application Specific Network-on-Chip, ASNoC)的可靠自定义拓扑结构,该拓扑结构面积小,功耗低,数据保护能力强(无差错)。所提出的设计分两步实现。首先,为ASNoC设计了自定义拓扑。其次,为了提高自定义拓扑的可靠性,设计了三种新的纠错机制并将其集成到自定义拓扑中。与现有的纠错码相比,所提出的三种纠错码的功耗和功耗更小,纠错能力更强。最后,将所提出的纠错码嵌入到自定义拓扑中,生成可靠的自定义拓扑。使用了韵律RTL遭遇工具进行分析。所生成的自定义拓扑在低噪声和高噪声环境下通过片上互连的数据可靠性分别提高了90%和40%。
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引用次数: 2
Grid and Islanded Operations of PV EnergyManagement System by Means ofReconfiguration of Controllers 基于控制器重构的光伏能源管理系统并网孤岛运行
S.lokesh, N. Reddy
In this idea the investigation, configuration of a photovoltaic energy management system with battery reinforcement displayed. The proposed system is work in both grid connected and autonomous load operations. Main advantage of the proposed system is that, the inverter functions as a current source in phase with the grid voltage, infusing energy to the network and controlling the dc-link voltage in grid-connected mode. The converter manages the battery charge and discharge. In islanded mode, the inverter control is reconnect to work as a voltage source using droop schemes. The dc/dc converter manage the dc-link voltage to empower the MPPT. An operation convention is proposed to guarantee the quality of the energy supply and minimize the losses of energy. A battery bank is joined with the dc interface as stores the energy for islanded operation mode. The point of this paper is to demonstrate that the proposed framework performs accurately, without risky homeless people for the inverter or the loads. Recreation and trial results on a 3-kW model demonstrate the possibility of the proposed control system.
在此思路的研究中,展示了一个带有电池加固的光伏能源管理系统的结构。该系统既可用于并网运行,又可用于负荷自主运行。该系统的主要优点是,逆变器作为与电网电压相相的电流源,向电网注入能量,并在并网模式下控制直流电压。转换器管理电池的充放电。在孤岛模式下,逆变器控制被重新连接到使用下垂方案作为电压源工作。dc/dc转换器管理dc链路电压,为MPPT供电。为保证供能质量,减少能量损失,提出了一种运行惯例。电池组与直流接口连接,为孤岛操作模式存储能量。本文的重点是证明所提出的框架执行准确,没有危险的无家可归者的逆变器或负载。在一个3千瓦的模型上的模拟和试验结果证明了所提出的控制系统的可行性。
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引用次数: 0
期刊
International Journal of Advanced Research in Electrical, Electronics and Instrumentation Energy
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