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The computational analysis of fluid flow in the afterburners for various nozzle angles is analyzed for the maximum speed of the aircraft. The real sized model of the afterburner consisting of diffuser with struts, fuel manifolds, V-gutter flame holders, liner and casing is created using solidworks software. The 60° sector model of this full scaled afterburner is imported into Ansys for the analysis...
Increase in renewable energy utilization has widened the scope of research in maximizing the efficiency of solar photovoltaic (PV) manufacturing technology, but still the achieved conversion efficiency of solar PV module is not more than 25%. Thus to maximize their operating efficiency and to compete with per unit costs of conventional power, there is need of an efficient and robust maximum power...
Transmission of power from one area to other area in interconnected power system causes variations in both the system frequency and tie line power interchange. Load frequency control is one of the efficient ways to solve these kinds of problems. In this paper a three area system is considered i.e., area-1 with thermal power plant, area-2 with hydro power plant and area-3 with nuclear power plant....
Selective Compliance Articulated Robot Arm (SCARA) manipulator is a very common use for pick and place applications. At present scenario more research is aimed towards 3D printing, Deburring etc. The present work aims at presenting the best placement position of a rectangular workpiece within the workspace using a SCARA robot. Fabricated SCARA robot Kinematics are verified using videographic analysis...
The emergence of three dimensional (3D) interconnects has reduced wire floor planning problems, increased device density, reduced RC wire delay, and minimized the energy dissipated by the long planar wires. Vertical 3D interconnect refers to a conductive filled through silicon vias (TSVs), which electrically connects front and back side of a silicon layer. Few electrical models and characterizations...
The increasing number of cyber-attacks on industriesdemands immediate attention for providing more securemechanisms to safeguard industries and minimize risks. Cyberphysical systems (CPS) being used in industries such as oil and gas, chemical process plants and the like are termed Industrial Control Systems (ICS). Control system security is aimed at preventing intentional or unintentional interference...
In software project management, software development effort estimation (SDEE) is one of the critical activities. Analogy-Based Estimation (ABE) is most popular estimation technique suggested in SDEE literature [1, 7, 22]. Researchers have proposed various methods to improve the accuracy of ABE by adjusting the retrieved solution. The research suggests all published calibration methods depend on linear...
In this paper a new approach is proposed to classify leafs in efficient and effective manner. In this approach, the features are extracted from edges of the leaf images and it is used two kinds of features which are edge based and shape based features for leaf classification. When the present method is tested on Flavia dataset, it gives the average classification accuracy rate of 94.37%. The Flavia...
Particle filter is a general numerical algorithm to estimate the posterior probability density function. While the execution of particle filter is very simple, but its principle drawback is that, it is very computational expensive by increasing rapidly with the increasing in the state measurement. One solution for this issue is to minimize the states showing up directly in the flow. The primary commitment...
A new Cascading Algorithm for de-noising images corrupted by Salt and Pepper noise at even high density level has been proposed. The first stage employs a Decision Based Median Filter (DBMF) which is mainly for eliminating the noise from the image, the pixels affected by noise are replaced with the median value of the processing window. The second stage employs, a Decision based Unsymmetric Partial...
A model predictive current control (MPCC) of shunt active power filter (SAPF) requires tracking of distorted reference current based on the discrete mathematical model of the system. But the approximations considered in the development of mathematical model for the nonlinear system and also the uncertainty in the parameter values will deteriorate the performance of control algorithm. To enhance the...
The hybrid cloud infrastructure is predominantly used in both industry and academia for its reusability and scalability. In deadline-constrained applications, the estimation of application execution time is a challenging task. The factors like heterogeneity, uncertainty and provisioning time delays affect the performance of hybrid cloud environment. In this work, we proposed a hybrid cloud scheduler...
In this paper, a model based predictive current control (MPCC) with a modified synchronous detection technique (SDT) is developed for a 3L-NPC multi-functional inverter based solar photovoltaic (SPV) system. This 3L-NPC multi-functional grid tied inverter (MFGTI) perform maximum power point tracking, harmonic compensation, load balancing and power factor control. The proposed SDT consists of two-stages,...
In this paper, an attempt is made to design pattern recognition systems using logistic regression model and few mapping functions are proposed for the same. The performance of proposed logistic regression model and mapping functions are assessed by evaluating the model using design of digital circuits, standard datasets from UMASS database and datasets pertaining to wireless sensor network applications...
In this paper, we need to detect the 3 axes position of the swimming fish robot in order to implement the aquarium fish underwater robot world. And, it implements positional control of the 3axes trajectory path for fish robot. The applied robot was verified the performance though the certificated fields test. It was satisfied the excellent performance such as driving force, durability and water resistance...
Launch of an aerospace vehicle is complex and requires a lot of expenditure and human efforts. IIR Seeker is one of the most important subsystems and plays a vital role during terminal phase for high altitude target engagement. Before testing the hardware IIR seeker, its behavior is modeled in high end computer with real time features and various interfaces (i.e. MIL-STD 1553B, RS-422 etc.). The dynamic...
Proposed research, shows implementation of EX_OR SUM OF PRODUCT - REVERSIBLE PROGRAMMABLE LOGIC ARRAY (ESOP-RPLA) using Reversible Logic based Dwivedi Rao Gate2 (DRG2) and DRG4 gates. DRG2 is N×N (N input - N output) Gate and is capable of implementing ESOP and Code Conversion operations. 3×3 DRG2 is Parity Preserving Gate and universal gate designed for implementation of all Logical, 2:1 MUX and...
This paper proposes a new approach to calculate optimal firing angles of a Seven-Level Cascaded H-bridge Multilevel Inverter(CHB-MLI) using Gravitational Search Algorithm(GSA). The presence of more levels in the output voltage waveform of MLI introduces large harmonic content which should be reduced. Selective Harmonic Elimination(SHE) method is the popular technique used for eliminating the desired...
In this paper, Design and development of control circuit algorithm of 3-Φ Voltage Source Inverter (VSI) using Unipolar Sinusoidal Pulse Width Modulation (SPWM) techniques is proposed using STM32F407VGTx discovery board interfaced with MATLAB Simulink Environment. For implementing 3-Φ VSI, this method is most useful as it will eliminate complexity of control circuit algorithm occurred due to analog...
This paper proposes a new methodology of firing to increase the number of levels in the output voltage of a conventional seven-level inverter. In a conventional 7-level cascaded H bridge (CHB), by employing a new firing scheme with unequal DC sources, an output waveform of 21-levels has been generated. Thus near sinusoidal waveform has been achieved with the same number of switches. The simulation...
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