IJEA - Volume 3 Issue 12 (December 2014)

 


Sr/No/ Title Pdf
1 Performance Evaluation of Band-Based Directional Broadcast (BBDB) Algorithm in Wireless Sensor Networks
Mohammed Moyed Ahmed, Prof. D. Sreenivasa Rao

Abstract-In WSN a new concept has been proposed as, sink node could be mobile to gather the samples from sensor field. In this scenario to gather the sensor data in a energy efficient manner as the sensor nodes have the confined resources. In this paper an algorithm has been proposed known as Band-based Directional Broadcast to control the direction of transmission that originates from sensor nodes. This technique has been studied by simulations that consider energy consumption, throughput, overheads and packet delivery ratio.

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2 Web service based monitoring and Automated log creation Mechanism for cloud services
S.Amitha Joice Kani, T.Hemalatha

Abstract:-Cloud computing refers to configuring and accessing the services via internet. Cloud computing provides highly scalable services. The user can use these services over the internet in pay-per-use basis. The important feature of the cloud services is that user’s data on-demand is being processed elsewhere, so that users don’t know about the process of data. However, the outsourced data in the cloud and the computation results are not always trustworthy. The resource owner shares their own resources in the cloud environment. The resource utilization information from the service provider is sent to the resource owner periodically. The utilized information on day-to-day basis is not updated by the cloud broker to the owner of the Resource. Since, resource owner have fear of their confidential data and loss of secrecy in the cloud, it becomes a major obstacle to the extensive acceptance of cloud services. Hence Logging is important because log data can be used for accounting and for troubleshooting the problems. The log records should be maintained in a secure manner. The logging process needs to be ensured at all times and the log files need to be integrated at all intervals. But the existing technique is that the log files are maintained in a centralized manner. The major disadvantage is that the log files cannot be retrieved at any time by the resource owner which is not sent to their resource owners. Hence, our objective is to propose a highly decentralized framework for logging mechanisms that’s suitable for cloud in order to monitor the user’s accessibility on cloud resources and to perform accounting.

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3 Transformerless h-bridge cascaded statcom with Star configuration
Mary Jandrasupalli, D.Prasadrao

Abstract— The multilevel inverter utilization has been increased since the last decade. This paper presents a transformerless static synchronous compensator (STATCOM) system based on multilevel H-bridge converter with star configuration. This proposed control methods devote themselves not only to the current loop control but also to the dc capacitor voltage control. With regards to the current loop control, a nonlinear controller based on the passivity-based control (PBC) theory is used in this cascaded structure STATCOM for the first time. As to the dc capacitor voltage control, overall voltage control is realized by adopting a proportional resonant controller. Clustered balancing control is obtained by using an active disturbances rejection controller. Individual balancing control is achieved by shifting the modulation wave vertically which can be easily implemented in a fieldprogrammable gate array. Two actual H-bridge cascaded STATCOMs rated at 10 kV 2 MVA are constructed and a series of verification tests are executed. The experimental results prove that H-bridge cascaded STATCOM with the proposed control methods has excellent dynamic performance and strong robustness. The dc capacitor voltage can be maintained at the given value effectively.

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4 Fingerprint recognition and analysis with atm Terminal
Yenuganti Nageswari, A.V.Subba Rao

Abstract-Security systems are now computerized. Automated security systems are essential now. These days most of the banking transactions, use of cell phones and personal digital assistants (PDAs) are frequently performed. This rapid progress in personal communication system, wireless communication system and smart card technology in the society makes information more quick & realistic. For the traditional ATM terminal customer recognition systems only rely on bank cards, passwords, and such identity verification methods which measures are not perfect and functions are too single. For solving the bugs of traditional ones, the author designs new ATM terminal customer recognition systems. Here we are using LPC2148 microcontroller at first user will scan his finger once finger recognized the system will send the password to the user cell after that the user need to enter the password then only further transactions will processed, an improved enhancement algorithm of fingerprint image increase the security that customer use the ATM machine.

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5 Effect of Segmental Baffles at Different Orientation on the Performances of Single Pass Shell and Tube Heat Exchanger
Ranjeeta Bisen, Pooja Tiwari

Abstract-In this study, the experimental analysis was performed on the shell & tube type heat exchanger containing segmental baffles at different orientations. In the current work four angular orientations (ɵ) 0˚, 15˚, 30˚ and 45˚ of the baffles were analyzed for the Reynolds number range 500-2000. It was observed that with increase of Reynolds number from 500 to 2000 at 0˚ angular orientation. There was increase in heat transfer rate and pressure drop. But when we increased the angle of orientation at particular reynold number, heat transfer rate increases upto 30˚ and after that it start decreases and pressure drop decreases continuously from 0˚ to 45˚.

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6 Modelling and implementation of variable Frequency dc-dc buck boost converter
T.Bhargavi, Y. Sravan Kumar

Abstract- Several techniques are available for implementing DCDC converters using digital controllers. Some of them are dspace, DSP, FPGA etc. Among these FPGA (Field Programmable Gate Array based implementation provides various advantages in terms of speed, flexibility, low power usage, reduced equipment sizing and massive parallelism. The traditional methods allow fault diagnosis only after the final implementation which leads to extra cost and loss of design time. This paper proposes a smart method of FPGA based implementation of DC-DC Buck Boost converter control system using Matlab and ModelSim. The control algorithm and coding is done by means of VHDL code and implemented using Altera FPGA Board. The FPGA takes control of the entire system and decides whether to increase or decrease the voltage depending on the application. Load is applied and the efficiency is checked at variable load conditions. Also performance comparison is made between a DSP and FPGA to evaluate the effectiveness of both the systems at various operating conditions.

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7 Energy efficient for multi media applications In wireless networks
Mr. B. Satyanarayana, Ms. A. Sowjanya

Abstract—Reducing energy consumption in wireless communications has attracted increasing attention recently. Advanced physical layer techniques such as multiple-input multiple-output (MIMO) and orthogonal frequency division multiplexing (OFDM), cognitive radio, network coding, cooperative communication, etc.; new network architectures such as heterogeneous networks, distributed antennas, multi-hop cellular, etc. The dramatic growth of mobile multimedia communications imposes new requirements on quality-of-service and energy efficiency in wireless networks. In this paper, we study the ESCC (Energy- and Spectrum-efficient Cooperative Communication) problem by exploiting the benefits of cooperative communication (CC) for mobile multimedia applications in multi-channel wireless networks. In a static network, it is formulated as a mixed-integer nonlinear programming problem. To solve this problem, we use linearization and reformulation techniques to transform it into a mixed-integer linear programming problem that is solved by a branch and-bound algorithm with enhanced performance.
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8 Design of self-timed controller with wagging Buffer for parallel synchronization
Mr. R. Purushotham Naik, Mr .G. Srinivas

Abstract—Synchronization is an important issue in modern system design as systems-on-chips integrate more diverse technologies, operating voltages, and clock frequencies on a single substrate. This paper presents a methodology for the design and implementation of a self-timed reconfigurable control device suitable for a parallel cascaded flipflop synchronizer based on a principle known as wagging, through the application of distributed feedback graphs. By modifying the endpoint adjacency of a common behavior graph via one-hot codes, several configurable modes can be implemented in a single design specification, thereby facilitating direct control over the synchronization time and the mean-time between failures of the parallel master-slave latches in the synchronizer. Therefore, the resulting implementation is resistant to process no idealities, which are present in physical design layouts.
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9 Design of merged flip flops to reduce Congestion and power reduction
Mr. G. Srinivas, Mr.V.Vijayabhasker

Abstract—This paper presents Integrated circuit design process. In IC design process it has different steps like Floor plan, Power plan, Placement, Clock tree Synthesis and Routing. It must have a relation in between each and every process. Among these it has a significant relation in between clock and power consumption. The power consumption of IC can be depending on clock toggles. By replacing of few single bit Flip flops by multi-bit Flip flops it can reduces power. By merging of Flip flops it reduces congestion and area of the design. This design can reduce power by approximately 30%. Congestion plays a major role in VLSI circuits. This design optimizes congestion to the accurate level. And it meets the perfect timing. In order to meet the timing it should meet setup as well as hold.
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10 A New Working Principle of Hybrid AC/DC Microgrid and Its Coordination Control
V.L.Surya Prabha, D.Archana

Abstract—THREE PHASE ac power systems have existed for over 100 years due to their efficient transformation of ac power at different voltage levels and over long distance as well as the inherent characteristic from fossil energy driven rotating machines. The proposed system presents powercontrol strategies of a grid-connected Micro grid generation system with versatile power transfer. This Micro grid system allows maximum utilization of freely available renewable energy sources like wind and photovoltaic energies. For this, an adaptive MPPT P&O Controller along with standard perturbs and observes method will be used for the system. In this paper, we have proposed a new ac/dc micro grid to reduce the processes of multiple dc–ac–dc or ac–dc–ac conversions in an individual ac or dc grid. The Micro grid consists of both ac and dc networks connected together by multi-bidirectional converters. AC sources and loads are connected to the ac network whereas dc sources and loads are tied to the dc network. Energy storage systems can be connected to dc or ac links. The proposed Micro grid can operate in a grid-tied or autonomous mode. The coordination control algorithms are proposed for smooth power transfer between ac and dc links and for stable system operation under various generation and load conditions. This Micro grid system operates under normal conditions which include normal room temperature in the case of solar energy and normal wind speed at plain area in the case of wind energy. The Power Balancing Control simulation results are presented to illustrate the operating principle, feasibility and reliability of Micro grid proposed system.
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11 A New Fuzzy-PI Based Power Control of Wind Conversion System Using Permanent Magnet Synchronous Generator (PMSG)
Ramana Karanam, Kondangi Venkata Ramana

Abstract—This paper presents the overall model of wind energy conversion system using permanent magnet generator. The fuzzy-PI controller is developed which produces optimum power. The proposed vector control provides the desired voltage at output of the generator side converter so as to control the generator speed. a robust intelligent controller is adopted in order to fulfill maximum power point tracking (MPPT) algorithm for permanent magnet synchronous generator (PMSG) with the application of wind turbines Conventional linear PI controller is simple and easy to implement but it has the drawback of dependence on system parameters especially in a wind energy conversion system with large amount of uncertainties as a sequence of wind speed variation, an adaptive fuzzy speed controller is proposed to overcome the nonlinear characteristics of WECS. Simulation studies based on Matlab Simulink/Fuzzy logic toolbox. The result shows the systems have optimum power output with wind speed.
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12 Structural Analysis of Reinforced Concrete beams Laminated With and Without FRP
Prateek Shrivastava, Yogesh Bajpai, Anubhav Rai

Abstract—As Hundreds of new materials appear on the market each month. Each of these materials has its characteristics, applications, advantages, limitations and cost. Thus, the task of knowing the properties and behavior of all types numerous studies has been carried out. Life cycle assessment has become an important tool for determining the overall performance of component. So, nonlinear Finite Element Analysis (FEA) has been carried out in this paper to simulate the behavior of failure modes of reinforced concrete (RC) beams strengthened in flexure by fiber reinforced polymer (FRP) laminates. Two beams were modeled in fem software using Ansys. In those two beams, one beam is control beam without frp and other beam is Glass Fiber Reinforced Polymer (GFRP) strengthened beams. From the analyses the load deflection relationships, Analysis (FEA) has been carried out in this paper to simulate the behavior of failure modes of reinforced concrete (RC) beams strengthened in flexure by fiber reinforced polymer (FRP) laminates. Two beams were modeled in fem software using Ansys. In those two beams, one beam is control beam without frp and other beam is Glass Fiber Reinforced Polymer (GFRP) strengthened beams. From the analyses the load deflection relationships.
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13 Operation of Single-Phase Bidirectional Inverter with Two Buck/Boost MPPTs
V Nageswara Rao Naik, Ch Rambabu

Abstract—This paper describes the operation of a bidirectional inverter with two buck/boost MPPTs. In a dc-distribution system, a bidirectional inverter is required to control the power flow between dc bus and ac grid, and to regulate the dc bus to a certain range of voltages. The MPPTs have to draw maximum power from solar PV panels and given to dc to dc converter for getting required range of voltages. This DC voltage will be converted into AC by using bidirectional inverter for supplying grid. Now a days these types of renewable sources are become more popular due to its advantages. By implementing these types of proposals we will get the required maximum power output without degrading natural resources. The installation cost, operating cost and maintenance cost is also low for solar energy. So, in future we will hope to generate maximum power from these renewable energy resources.
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14 Group elevator scheduling With advance information for Normal and emergency modes By using RFID
Murugavel.D, Saravanamutthukumaran.S, A.Elumalai

Abstract—Anembedded system is a computer system designed to perform one or a few dedicated functions often with real-time computing constraints. It is a part of a complete device often including hardware and mechanical parts. Efficient elevator group control is an important issue for vertical transportation in high-rise buildings. The regulation of average waiting time, journey time and energy consumption is an optimization problem. Elevator group control systems (EGCSs) are the control systems that systematically manage three or more elevators in order to efficiently transport passengers. Group elevator parking and scheduling is a well-known problem in industrial control and operations research with significant practical implication. This study aims to improve the elevator group control system's performance by applying scheduling algorithm. Firstly, average passenger waiting time can be reduced. We develop a probabilistic model of how these arrivals affect the behaviour of elevator cars at the lobby, and demonstrate how this model can be used to very significantly reduce the average waiting time of all passengers. One important trend to improve elevator systems is to collect advance traffic information. Nevertheless, it remains a challenge to develop new scheduling methods which can effectively utilize such information. We present an efficient scheduling for exact calculation and minimization of expected waiting times of all passengers using a bank of elevators.Load sensor is used for identification of velocity of passenger which allows the limited people inside the elevator and IR sensor is used to detect capacity of space inside the elevator. An RFID tag on a person may allow the system to sense when the person is approaching an elevator and which floor is likely to be the destination and it should be scheduled in a higher priority manner by using an RFID.Zigbee is used in elevator for communication purpose to the control room.
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15 A Differential GPS Based Conductor Sag Measurement System
M.Praveen Kumar

Abstract—A real-time and “direct” method of measuring the absolute value of sag on a transmission-line conductor using a differential global positioning system (DGPS) is presented. The method includes a real-time data-processing module integrated into the DGPS system. The GPS signals corresponding to physical movement of the midspan of a transmission line conductor were obtained so that conductor-to-ground clearance could be recorded in real time. Several field tests were designed and implemented to test the DGPS method under varying conditions of the transmission-line current. A comparison of results obtained from the DGPS method with those from a laser-range finder indicates an accuracy of +- 1 in.
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