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This paper aims to highlight the possibility of interactively determining the performance of dynamic systems using virtual instrumentation which include Matlab scripts, so as through this combination it can obtain the of virtual tools that work as simulators for certain systems or processes.
Many problems associated with networked systems can be formulated as network utility maximization (NUM) problems. Dual decomposition is a widely used distributed algorithm that solves the NUM problem. This approach, however, uses a step size that is inversely proportional to measures of network size such as maximum path length or maximum neighborhood size. As a result, the number of messages exchanged...
In this paper, we propose a novel method for designing linear predictors suitable for lossless image coding. In general, the Minimum Mean Square Error (MMSE) is an important concept in image coding. However, predictors which are optimized on the basis of the MSE criterion are not necessarily optimum from a viewpoint of coding efficiency. Thereupon our method optimizes a predictor so that a cost function...
After the fourth passive circuit element (Memristor) came to existence in 2008 its tremendous potential to be used as a replacement for MOSFETS made its mathematical modeling very imperative. Various device models for the memristor had been proposed earlier such as the linear ion drift model, non linear ion drift model, tunnel barrier model, and a recently proposed TEAM model. In case of linear ion...
Output dc voltage from Fuel Cell (FC)/Photo Voltaics (PV) needs to be conditioned and converted into ac form before integrating to grid. Normally, two stage converters are used for this purpose. Two stage converters have several disadvantages like low efficiency, more number of components, big size, etc. especially when they are operated at low input voltages. In this paper, a coupled inductor based...
We present and analyze an Electric Vehicle (EV) charging management model for a fast charging station network in a smart grid environment. The proposed model considers a charging station network that provides service to multiple EV charging-classes. The basic feature of the proposed model is when EVs are blocked by their preferred station due to the unavailability of charging outlets, they are prompted...
Ideal autostereoscopic display designs show a symmetrical light intensity distribution in the viewer's space. Real displays however always show some inhomogeneities. We investigated and simulated an autostereoscopic display with motion parallax barrier. Thereby our newly developed subpixel area model (SAM) served as a basis for barrier and intensity dependent viewing zone calculations. We introduce...
There are three different approaches for functional observer design for Linear Time-Invariant (LTI) systems within the literature. One of the most common methods has been proposed by Aldeen [1] and further developed by others. We found several examples in which the necessary and sufficient conditions for the existence of a functional observer are actually not sufficient for this methodology. This...
A Novel scaling theory for Single Gate AlInSb/InSb High Electron Mobility Transistors (HEMTs)is derived by solving the 2D Poisson equation. To combat with the issues introduced by device scaling,Effective Conductive Path Effect (ECPE) has been taken into account.From literature, scaling Metal Oxide Semiconductor Field Effect Transistors (MOSFETs)with ECPE has shown stronger immunity towards short...
In order to solve the problem of spectrum and power allocation for D2D communication in cellular networks when the prior knowledge is not available, a method based on machine learning is proposed in this paper. Q-learning, which is one of the most important algorithms in machine learning, is proposed to solve the radio resource management in underlay mode to find the optimal strategy in time series...
Reversible logic has drawn great attention in recent years due to its emerging propagation in diverse range of areas. In this paper, we present a novel approach to unite addition and subtraction operations; circuits that perform addition/subtraction operations using fault tolerant reversible gates with fault detection capability. Adder and subtractor are basic building blocks of any Arithmetic Logic...
In this paper, a multi-surface sliding control (MSSC) is proposed for trajectory tracking of 6 degrees of freedom (6-DOF) inertia coupled aerial vehicles with multiple inputs and multiple outputs (MIMO). It is shown that an iterative MSSC design can be carried out to control flight. Using MSSC on MIMO autonomous flight systems creates confluent control that can account for model mismatches, system...
Lotka-Volterra equations describe the population relationship between two species, i.e., predator and prey. In many circumstances, it is necessary to introduce a control method into such a predator-prey system. Different from traditional methods, by applying Zhang-gradient (ZG) method and using interaction coefficients of Lotka-Volterra equations as inputs, the population control problem of the predator-prey...
This paper presents two new approximations for the logarithmic and exponential functions. These approximations require only a square rooter function, a scalar function and a constant. Thus, the realization of these functions in current-mode is simple, straightforward and uses less number of transistors. Simulation results obtained using the Tanner simulation software from Tanner EDA in 0.35µm standard...
This paper presents results of an extensive parametric study, based on Electromagnetic simulation, for square loop type frequency selective surfaces (FSS). Consideration was given to the physical attributes of the FSS, such as the loop dimensions and spacing, substrate thickness and dielectric properties, for several frequencies and plane wave incident angles. Correlation analysis and evaluation of...
This paper focuses on the modeling and simulation of silicon carbide(SiC) bipolar junction transistor(BJT). SiC BJT is modeled in MATLAB using internal dynamical equation, and the Haar wavelet method is used to solve the ambipolar diffusion equation (ADE). The simulation results of switching waveforms of SiC BJT are given, which verify the validity of this method.
An algorithm for state-space model generation using free software is proposed in the paper. The algorithm is based on circuit equations formulation using modified nodal analysis and their solving to provide state-space model. State-space model is generated in a symbolic form for all possible states of DC-DC converter operation. Determination of possible states is obtained by checking existence of...
Cooperative positioning is a new paradigm in Global Navigation Satellite System (GNSS) positioning. By sharing information with other users and measuring geometrical range between them, the localizability and positioning precision of users can be improved. In this paper, we put forward a two user cooperative positioning model and a positioning algorithm. This paper analyzes the localizability of users...
We study the impact of uncertainty or lack of confidence on the propagation of opinions and the formation of consensus or divergence in social networks. Many social and political issues often lead to extreme divergence of opinions, however, very often people hold opinions without a full sense of confidence. In this work, we are interested in how uncertain opinions evolve through interactions in a...
This paper presents a few aspects regarding the modelling, simulation and monitoring of dynamic regimes for asynchronous motors. There are presented the two-axes mathematical model of these motors, the Simulink simulation program, the simulation results for the case of direct on-line starting, as well as a few experimental results (which confirm the simulations). The research originality derives from...
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