James Stephen M.,ANITS |
Prasad Reddy P.V.G.D.,Andhra University
International Journal of Advances in Soft Computing and its Applications | Year: 2011
Fingerprints are impression of the friction ridges of the finger. They are used as biometric feature for person identification and verification in the field of biometric identification. In spite of decades of research in fingerprints, reliable finger print recognition is still an open problem. Minutia based fingerprint recognition algorithms have been widely accepted as a standard for single finger recognition applications. This technology has proved to be a reliable form of enrollment and matching in a corporate environment under ideal circumstances. In this paper, an algorithm based on SVD (singular value decomposition) is proposed for feature extraction of a fingerprint and Identification of finger prints is done by using Traditional Euclidean Distance. This paper consists of three main stages (i) Data Acquisition (ii) Feature Extraction and (iii) Authentication /Identification. The image acquisition is done by means of Futronic FS88 fingerprint Scanner. The obtained image is of high quality, 256 gray scale values in every single pixel. The algorithm developed for feature extraction of a fingerprint is based on singular values which are obtained by performing SVD. Identification of finger prints is done by using Euclidean Distance Algorithm. Our experimental results are encouraging. The developed system is light-weighted and simple. The experimental results show that the developed system is efficient and reliable. © ICSRS Publication, 2011.
Anil Ch.,ANITS |
Sree R.P.,Andhra University
Asia-Pacific Journal of Chemical Engineering | Year: 2015
Simple tuning rules for proportional-integral-derivative (PID) controller are proposed for Pure Integrating Plus Time Delay systems (PIPTD), Double Integrating Plus Time Delay systems (DIPTD) and stable/unstable First Order Plus Time Delay Integrating systems (FOPTDI) based on Multiple Dominant Poleplacement (MDP) method. The main advantage of the method is that there is no time delay approximation for deriving PID settings. Tuning rules for PIPTD and DIPTD systems are given as a function of tuning parameter, and tuning parameter can be selected based on desired level of robustness (maximum magnitude of the sensitivity function, Ms). Tuning rules for FOPTDI system are given as a function of ratio of time delay to the process time constant Lτ for Ms = 2. Simulation on various transfer function models and on non-linear model equations of CSTR carrying out an exothermic reaction shows the effectiveness of the proposed method in terms of Integral Absolute Error (IAE), Total Variation (TV), Overshoot (OS) and Ms. © 2015 Curtin University of Technology and John Wiley & Sons, Ltd. © 2015 Curtin University of Technology and John Wiley & Sons, Ltd.
Prasad K.S.,ANITS |
Rao Ch.S.,Andhra University |
Rao D.N.,Centurion University of Technology and Management
Journal of the Brazilian Society of Mechanical Sciences and Engineering | Year: 2012
Design of Experiment commonly referred to as DOE is one of the extensively used methods for experimental study of many manufacturing processes in engineering. DOE is a statistical approach in which a mathematical model is developed through experimental runs. DOE predicts possible output based on the input parameters of the experimental setup. In the present study, a review is made on DOE techniques that have been employed for various welding processes by other researchers. This study predominantly focuses on the usage of Response Surface Method, Taguchi's method and Factorial method in Welding. Copyright © 2012 by ABCM.
Journal of Electrical Engineering | Year: 2014
Sinusoidal Pulse Width Modulation (SPWM) and Space Vector Pulse Width Modulation (SVPWM) are the most popular modulation strategies for Multi level inverters. Two level inverters is the basic technique to implement any level. It becomes difficult in high voltage &high power applications due to the increased switching losses and limited rating of the dc link voltage. Multilevel inverters are used in high voltage and high power applications with less harmonic contents. This paper proposes a theoretical analysis and software implementation for two level SVPWM &three level SVPWM inverters and three-level SPWM inverters. This software implementation is performed by using MATLAB/SIMULINK software. This paper gives comparison between two level &three level inverters using SVPWM technique. Also this paper gives comparison between three level inverters using SVPWM and SPWM technique. The simulation study reveals that three-level SVPWM inverter generates less THD compared to two-level SVPWM inverters &Three-level SPWM inverters.
Astrophysics and Space Science | Year: 2015
In this paper, we have investigated spatially homogeneous and anisotropic Kantowski–Sachs cosmological model in Lyra (Math. Z. 54:52, 1951) manifold in the presence of bulk viscous fluid containing one dimensional Cosmic strings. To obtain a determinate solution of the field equations, we have used some plausible physical conditions. The solution obtained represents a bulk viscous string cosmological model in Lyra geometry. Some physical and geometrical properties of the model are also discussed. © 2015, Springer Science+Business Media Dordrecht.