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The Gait recognition is the 2nd generation of biometric identification technology which aims to identify people at a distance by the way they walk. Due to the fact that there has been increasing research interest in the identification of an individual in access controlled environments such as the airports, banks and car parks, it has been observed that the effective human gait recognition plays a...
A new discrete Fractional Fourier transform based Kaiser-window design technique has been adopted in this paper for the synthesis of a band-pass filter (BPF) in finite impulse response (FIR) form. The filter design is attempted with the aim of efficient power feedback with the measured sensor data, to the regulating system of nuclear reactors. The ill effects of integer and fractional order noise...
The speed and position estimation from Back EMF has been a problem under speed reversal response due to change of sign of speed. In this paper, an algorithm using fuzzy logic is proposed to estimate the speed and position of BLDC motor from back EMF for sensorless brushless DC (BLDC) motor drives to improve the performance of conventional sensorless drives. Most existing sensorless methods of the...
In this paper, the core temperature of a 540 MWe Pressurized Heavy Water Reactor (PHWR) has been estimated from the measured temperature of the coolant using system identification techniques. The formulation is done considering fractional order (FO) dynamics for the sensor noise (i.e. 1/fα noise) and the conventional white noise in measurement. Performance study with different least square based linear...
Phase curve of an open loop system is flat in nature if the derivative of phase with respect to frequency is zero. With a flat phase curve, the corresponding closed-loop system exhibits an iso-damped property i.e. maintains constant overshoot with the change of gain and with other parametric variations. In recent past application, fractional order (FO) phase shapers have been proposed by contemporary...
This paper proposes a framework for determining the correctness and robustness of simulations of hybrid systems. The focus is on simulations generated from model-based design environments and, in particular, Simulink. The correctness and robustness of the simulation is guaranteed against floating-point rounding errors and system modeling uncertainties. Toward that goal, self-validated arithmetics,...
With the widespread usage of mobile phones primarily due to their reduced costs, they are now not only being used for communication but can also assist law enforcing agencies to keep track of speeding vehicles or can be used by organizations to keep track of its employees. The three ways of tracking which are primarily in use are (a) via GPS (b) Using signal attenuation property of a packet and (c)Using...
In this brief, the existing integrators/differentiators have been discussed along with the methods to arrive at the same. Using those methods, few new Integrators/Differentiators have been designed. The methods include Linear Interpolation and Linear optimization. Secondly, Simulated Annealing Algorithm has been applied for further optimization and subsequent design of wideband integrators/ differentiators...
Natural Image Matting today, is widely used in various disciplines including media, animation industry, computer simulations for research etc. The process of estimating the foreground and background colors with proper alpha mattes has been widely studied and satisfactory results have also been obtained. This paper deals with one such method where a rough estimate of alpha matte in RGB (Red, Green,...
Memories are increasingly dominating Systems on Chip (SoC) designs and thus contribute a large percentage of the total system's power dissipation, area and reliability. In this paper, we present a tool which captures the effects of supply voltage Vdd and temperature on memory performance and their interrelationships. We propose a Temperature- and Reliability- Aware Memory Design (TRAM) approach which...
Boolean satisfiability (SAT) based methods have traditionally been popular for formally verifying properties for digital circuits. We present a novel methodology for formulating a SPICE-type circuit simulation problem as a satisfiability problem. We start with a circuit level netlist, capture the non-linear behavior of the circuits at the transistor level via conservative approximations and transform...
One-to-many negotiation is a type of automated negotiation where one agent negotiates with multiple opponents. We consider the case of one seller agent negotiating with multiple buyer agents for the sale of a single copy of a product in an e-commerce scenario. The negotiation with each buyer agent is done by a sub-seller agent under the control of the seller agent. Influencing among these sub-seller...
Efficiency of present path loss models suffers when they are used in the environment other than for which they have been designed. The aim of this paper is to propose the predicting the path loss with the field measurement models and represent them in a more convenient form for the proposed fuzzy logic modeling. This paper proposes method to predict path loss for correct location of base station in...
Unmanned air vehicles (UAV) are considered as technologies of future. Obstacle avoidance is one of the most challenging tasks which the UAV has to perform with high level of accuracy. In this paper, obstacle is considered as a spherical threat zone and a geometric approach is used to develop the algorithm to avoid the collision. The algorithm uses particle swarm optimization (PSO) to evaluate the...
A well designed hybrid energy system can be cost effective, has a high reliability and can improve the quality of life in remote rural areas. The economic constraints can be met, if these systems are fundamentally well designed, use appropriate technology and make use effective dispatch control techniques. The first part of this tri-series paper, presents the analysis and design of a mixed integer...
Long-term service agreements (LTSAs) spanning over 5-20 years offer a functional guarantee of the output of products, which are extremely sophisticated and need elaborated and extensive service infrastructure, over the entire contract period. Bound by the contract, the provider is responsible for maintaining the product for its customer by developing an efficient service operations strategy. Risks...
In the recent years, there has been a trend to run metallic pipelines carrying petroleum products and high voltage AC power lines parallel to each other in a relatively narrow strip of land. Due to this sharing of the right-of-way, verhead AC power line electric field may induce voltages on the metallic pipelines running in close vicinity leading to serious adverse effects. In this paper, the induced...
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