International Journal of Electrical and Electronics Engineering

10

Authors: M. NAGAMANI & SHAIK FATHIMA

Speech enabled devices are gaining a strong footholds, in the man’s day today life. Several speech recognition applications have implemented, and are available for public or commercial use. Very few of these, however, are available for the Indian Market. We present this paper with the intent of developing a speech controlled music player viable for the Indian customers this paper aims at introducing the concept of handling the existent music player with speech commands. Here we investigated from the speech recognition problem point of view. This system is based on the open source CMU Sphinx-3, from the Carnegie Mellon University.

8

Authors: SHENG-FUU LIN, YI-CHIEH SUN & JIAO-ROU LIAO

Nowadays, in the field of public security surveillance, the issues of abandoned objects and abandoner detection become more and more popular. If the public places are threatened intentionally by the dangerous objects or obstacles on the way of the bus and railway, it will cause lots of society security problems and we should reduce relative risks. Besides, people often leave something in the public region accidentally. For the aforementioned events, institution checks the videos by people to find the abandoned objects and abandoner after events happen. In this paper, we design an intelligent video surveillance to reduce the loading of human resource, enhance the security and reliability of surveillance system. There are three contributions of this paper. First, this paper proposes a set of features, including the invariant moments and histogram of gradients to detect the abandoned objects more accurately. Second, this paper proposes an analysis of projection vector and estimation of angle to improve the accuracy of the abandoner detection. Finally, a prototype is designed to detect the abandoned objects and their own abandoner.

1-10

Authors: OPTIMAL CONTROL OF A ROBOTIC SYSTEM WITH TWO DEGREE OF FREEDOM

A simple improvisation technique for designing a linear quadratic regulator (LQR) optimal controller for a robotic pan and tilt platform (PTP) with two degrees of freedom (DOF) has been proposed in this paper. Newton-Euler linear model of this robotic system has been stabilized to obtain the desired performance criteria via LQR. The performance of the proposed LQR controller is highlighted through comparisons with the existing proportional derivative (PD) and lead Compensator controllers on account of both steady state and transient response parameters.

1-8

Authors: ABHISHEK VASHISHTH & M. K. VERMA

Voltage instability has been considered as a major threat to power researchers and utilities for more than three decades. In competitive electricity market, a number of generating companies may use same transmission corridor to supply power to consumers. This may reduce Available Transfer Capability (ATC) of transmission network. ATC reduction may lead to shrinkage of nose curve, thus causing the danger of voltage instability. In this paper, determination of ATC has been proposed based on voltage stability criterion for bilateral and multilateral contracts. Placement of Unified Power Flow Controller (UPFC) in optimal location has been suggested for voltage stability based ATC enhancement. Optimal location of UPFC has been found using a sensitivity based approach. Case studies performed on IEEE 14-bus system establish the effectiveness of UPFC placement in voltage stability based ATC enhancement.