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In this paper, a novel solution for security constrained optimal power flow (SCOPF) problem with interline power flow controller (IPFC) is presented. The proposed algorithm is known as intelligent search evolution algorithm (ISEA). In the proposed algorithm, a two step initialization process have been adopted, the mutation operation is not used and also it gives optimal solution with less number of...
The formulation of a brake pad requires the optimization of multiple performance criteria. To achieve a stable and adequate friction (μ), the brake pad materials should have low fade and higher recovery characteristics coupled with less wear and noise. Among the properties mentioned, resistance to fade is very difficult to achieve. The type and amount of resin in the friction material is very critical...
In this paper we design a fuzzy logic controller (FLC) for a cross flow shell and tube heat exchanger system. The purpose of this controller is to maintain a uniform temperature at the output (tube end) of the heat exchanger system, there by varying the input flow rate for a specified range. The control action taken by the FLC is based on the deviation from set point i.e. error (e) and rate of change...
Recently, the necessity for power saving in Wireless Sensor Networks (WSNs) is crucial particularly in mission essential fields like military and medical applications. A communication network consists of nodes, every of that has computing power and may transmit and receive messages over communication links, in wireless. During this paper think about zigbee network formation and provides network protection...
Optical Transparent single crystals of Pb2+ doped Potassium acid Phthalate at different proportions were grown in aqueous solution by slow evaporation method at room temperature. The characterization of functional groups in the crystal lattice and optical absorption studies were done by FTIR and UV visible spectrophotometer.
This paper deals with finding five optimal control parameters input voltage, current, speed, pulse on/off time to maximize metal removal rate (MRR) and minimize surface roughness (SR) on wire edm (electrical discharge machining). Wire edm is an electro thermal production process in which a thin single strand metal wire in conjuction with de-ionised water (used to conduct electricity), allows the wire...
Kalman estimator is designed to estimate the unmeasurable system states in an Active Suspension System (ASS) in two modes. In the first mode, the estimated road input is given to the estimator to estimate the state variables. In the second mode, the actual road input is given to the estimator to estimate the state variables. In both the modes, the estimated state variables are compared with actual...
This paper proposes a robust data based flux estimator for sensor-less vector controlled Induction Motor (IM) drives. The performance of sensor-less vector controlled IM drives to a large extent depends on the accuracy of estimated speed. The speed estimation in turn depends on the accuracy of estimated flux. Conventional voltage model equations for flux estimation encounter major drawbacks at low...
Feature Selection (FS) is a process, to select features which are more informative. It is one of the important steps in knowledge discovery. The problem is that not all features are important. Some of the features may be redundant, and others may be irrelevant and noisy. The conventional supervised FS methods evaluate various feature subsets using an evaluation function or metric to select only those...
Concrete is a mixture of cement, fine and coarse aggregates, in which aggregates occupy the major volume. Also, the strength of concrete varies with the type of aggregate used. In Recent days, the scarcity of aggregates due to the massive development in infrastructure field made the researchers think about an alternate source of concrete materials. Economical and environment friendly way is to consider...
The denoising of digital images degraded by various types of noises is a major problem in digital image processing. This paper presents a new hybrid image denoising method fusing Bilateral Filter (BF), Wavelet Thresholding, Multiscale products Wavelet Thresholding for image denoising. With the help of nonlinear combination of information of adjacent pixel, bilateral filter smoothen the edges and preserve...
The focus of Agile software development has been on methods and practices. How to take the methods effectively in use has received less attention. Especially in large organization it is not trivial to take agile methods in use. Based on the experiences, a life cycle model that describes phases in a software process improvement project deploying an agile method to an individual project was developed...
High-performance variable speed drives require a better transient performance compared with the steady-state operation. Nowadays, vector control and direct torque control (DTC) are popular methods for high performance drives. This paper presents a new vector control method for voltage-source inverter fed induction motors using look-up tables. The proposed method uses a predetermined look-up table...
The present work is to make an attempt towards isolating and characterizing the plant phenolics of Senna alata and evaluated for their antibacterial activities against Escherichia coli, Bacillus subtilis, Vibrio cholerae, Salmonella typhi and Staphylococcus They are also recommended as antifungal, antiparasitic, antipyretic, anti-inflammatory, antineoplastic, etc.
This study deals with the free vibration analysis of hybrid-composite beams. The combinations for hybrid composites used in the analysis are Carbon/epoxy and Glass/epoxy. The Hybrid-Composite beams have superior material properties than ordinary composites (having fiber and matrix) due to synergistic effect. The free vibration analysis has been carried out on the hybrid composite beams having different...
A radix converter comprises a plurality of automata each combined of Moore and Mealy design. The automata are connected in cascade with the digits of the input number applied serially to one of the automata. The output of Moore machine in each stage is utilized to get the respective coefficient of the number in the transformed radix. The output of Mealy machine is determined both by its current state...
Power Line Network is proposed as an alternative for broadband data transmission especially in developing countries like India. The power line channel is affected by stochastic attenuation, multipath propagation and noise which can lead to the limitation of channel capacity and achievable data rate. One of the promising approaches to mitigate the problem is adaptive OFDM (AOFDM). Adaptive transmission...
This article deals with partitioning the vertex set V(G) into as many disjoint subsets, each being a majority dominating set with a required property. The majority domatic number dM(G) are found for some standard graphs. Some bounds and characterisations on dM(G) of a graph G are determined.
In this paper, a load dispatch problem is solved to minimize the emission due to oxides of nitrogen (NOx), considering both thermal and wind generators. The effects of wind power to control overall emission of NOx substances are also investigated here. To find the optimum emission dispatch schedule, a newly developed optimization technique, Gravitational Search Algorithm (GSA) has been applied. GSA...
The spread of various types of malicious activities like unsolicited commercial e-mail (UCE) or unsolicited bulk e-mail (UBE) also called as SPAM has been the most imminent menace to the today's Internet world. These activities bring financial crisis to companies and annoying to most users because it clutters the users mailboxes and steal their valuable information for its financial gain. Now a day's...
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