International Journal of Engineering Sciences
Volume 1 Number 1 October 2010
--------------------------------------------------------------------------------------------------------RESEARCH PAPERS
Electrical Engineering
ES010101 A Modified Optimization Artificial Immune Network and Differential
Evolution Approach to the Optimal Power Flow Problem
1 - 14
Kapildev V. Lout, Robert T. F. Ah King
Department of Electrical and Electronic Engineering, University of Mauritius
Abstract
This paper presents the use of a modified optimization artificial immune network and differential evolution
algorithm (opt-aiNet-DE) to solve the optimal power flow problem. The problem was formulated as a nonlinear optimization problem where the control variables were the real power produced at each generator,
the voltage magnitude at each voltage controlled bus, the transformer tap settings of voltage regulating
transformers and the configurations of shunt reactive compensation devices. The optimal settings of the
control variables were determined using the proposed algorithm with the inequality constraints being
handled using a penalty parameterless constraint handling method. Two case studies were considered in
order to show the effectiveness of the proposed technique. The first case study aimed at minimizing the
cost of power generation and the second case study aimed at improving the voltage profile of the whole
system. The modified opt-aiNet-DE algorithm was tested on the IEEE 30 bus system and the results
compared with other heuristic methods.
Mechanical Engineering
ES010102 Automated Modular Fixture Planning
15 - 26
S. Bansal, P. Malik, N. V. Reddy
Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur (India)
Abstract
In this paper, a multi objective approach is presented for automatic modular fixture planning. The
presented system first generates all feasible fixture plans and then sequentially eliminates them by
applying the criteria of uniqueness and stability. The unique and stable fixture plans are then checked for
both translational and rotational accessibilities and the fixture plan with maximum accessibility angle is
selected as the best plan. Characteristics of dowel pin based modular fixturing systems are considered in
generating the fixture plans based on 3-2-1 and 3-1-1-1 principles. Complete geometric information of
the workpiece CAD model is automatically extracted from a neutral IGES source file. The system is
successfully tested for fixture planning of complex geometries with concave features and free form
surfaces.
ES010103 Investigation and optimization of kerf width for wire cut electro discharge
machining of SS 304L using Taguchi dynamic experiments
27-38
Vishal Parashar, A.Rehman, J.L.Bhagoria, P.K.Soni
Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal, India.
Abstract
Machining parameters tables provided by the machine tool manufacturers often do not meet the operator
requirements and sometimes even do no provide efficient guidelines to manufacturing engineers. This may
lead to the act of adjustment in the customer’s requirements, which may result in poor quality, and
ultimately rejection of the final product by them. Hence, a suitable selection of machining parameters of
CNC wire cut electro discharge machining (WEDM) process is necessary. In this, present study,
optimization of Kerf Width using Taguchi’s dynamic design of experiments is proposed for WEDM
operations. Experimentation was planned as per Taguchi’s L’32 (2 1 X 44) mixed orthogonal array. Each
experiment has been performed under different cutting conditions of gap voltage, pulse ON time, pulse
OFF time, wire feed and dielectric flushing pressure. Stainless Steel grade 304L was selected as a work
material to conduct the experiments. From experimental results, the Kerf Width was determined for each
machining performance criteria. Signal to noise ratio was applied to measure the performance
characteristics deviating from the actual value. Finally, experimental confirmation was carried out to
identify the effectiveness of this proposed method.
ES010104 A Systematic Procedure to Find the Optimum Composition of the Material
used for Friction Liners of Trucks
39 - 54
V. K. Tripathi*, A. J. Mathew#, P. K. Pandey$
*Department of Mechanical Engineering, College of Engineering Pune, India
#Department of Mechanical Engineering, S. S. E. T., Karukutty, Ernakulam, India
$Department of Mechanical Engineering, A.I.T.R. Bhopal, India
Abstract
Friction liners being the parts of braking system that actually rub against the rotating drum of trucks, need a
material which has sufficient cross breaking strength against shear failure and hardness against wear. In
addition to cross breaking strength and hardness, there are other requirements also that a brake liner
material has to fulfill. Indian standard 2742 prescribes a list of ingredients of a composite material for brake
liners of trucks to fulfill those variety of requirements. It also prescribes the limiting values of the important
properties. Due to a large number of ingredients, finding an optimum composition of them in a composite
material becomes an important problem. In the present work, a non linear programming problem is
formulated to optimize the composition of the composite material prescribed by Indian Standard 2742 for
brake liners of trucks. The objective is to maximize the cross breaking strength, while keeping hardness
within the permissible limits. Equations of the desired properties have been modeled from the experimental
data. The analysis of the problem is done computationally using MATLAB. The computational results have
been compared with those obtained by Taguchi method of analysis.
Computer Science and informatics
ES010105 An IP Lookup algorithm using hashing formula
55 - 58
K. V. Arya* and K. Agarwal#
AVB-Indian Institute of Information Technology & Management, Gwalior
#
Jaypee Institute of Information Technology, Noida, India
*
Abstract
This paper represents fast hash based IP address lookup algorithm. In the proposed method, binary strings
are converted into decimal numbers and a unique tree structure is constructed to handle the IP address
lookup problem. For L, the length of longest prefix in the table the proposed algorithm produces the result
in O(L). It has been observed the proposed algorithm results no collision effect and its efficiency is
independent of the number of prefixes. The proposed algorithm works efficiently for fixed data set routers
having large number of prefixes of normal length.
ES010106 The Generalized Caseview, a pixelization method for visualizing
heterogeneous data: medical case studies
59 - 72
Pierre P Lévy
Assistance Publique-Hôpitaux de Paris, Hôpital Tenon, Département de Santé Publique, Université Paris
6-Pierre et Marie Curie, Paris, France
Abstract
The Generalized Caseview method (GCm) is a pixelization method. It is presented here by the way of a
new formalism proposed recently. The Method identifies, so to speak, each informational entity in the table
with a cell of a physical support to create what we call an “infoxel”. The sum of all coloured infoxels
becomes an image, the Generalized Caseview. The method consists of two steps: the first one is to define
the reference frame while the second is to visualize data through the reference frame. The infoxels that
constitute the reference frame should be organized according to three criteria: binary, nominal and ordinal.
The case studies are about prostate cancer, sleep apnea syndrome diagnosis and genetics data. The heuristic
value of the method is emphasized through the knowledge crystallization metaphor.
ES010107 Implementation of iterative wiener filter in restoration of color images 73 – 81
S. Datar and Y. K. Jain
Samrat Ashok Technological Institute, Vidisha, India
In this paper, performance of iterative Wiener filter in restoration of color images is evaluated. A
comparative analysis of restoration results obtained from inverse filter, single step wiener filter and
iterative wiener filter is also made. A color image is degraded using motion blur function and corrupted
with addictive Gaussian noise. This image is restored with single step wiener filter and inverse filter.