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The performance of target recognition in VHF radar is evaluated through the use of support vector machine (SVM) classifier. Automatic target recognition in low resolution radars has been an interesting research issue for many years. Indeed, some intrinsic properties of low resolution radars such as low pulse repetition frequency, narrow bandwidth and low time on target, restrict the accuracy of target...
This paper concentrates on the development of a comprehensive model of transmission switching in stochastic joint energy and reserve market. In this paper, a stochastic joint energy and reserve market with transmission switching considering dynamic constraints has been proposed to minimize the cost of supplying load and reliability expenses and avoid transient instability in line switching. Transmission...
In this paper, a new class of step edge detection IIR filters derived from the Shen–Castan and Deriche edge detection filters is proposed. To avoid the discontinuity drawback of Shen–Castan edge detector, we multiply its impulse response by a proper function. This function exhibits a behavior closed to the sign(.) for large values of x, and similar to the line f(x) = k.x, for small values of x. Hence,...
Zinc is a modeling language in which a conceptual model is automatically mapped into different design models using well-known solving techniques: constraint programming, mathematical methods, and local search. As a result, Zinc is solver and technique independent. Since original conceptual models may be nonlinear, mapping to linear solvers requires the models to be linearized first. In this paper,...
In this paper, we briefly present our design decisions and challenges involved in designing the hardware/software tools that we prepared based on our several years of experience in teaching logic circuits and computer architecture which help students of the first course in computer architecture to familiarize themselves with the basic operations of a computer. In fact, we first present the hardware...
In this paper a novel high-frequency model of Induction motor is presented for investigating induction motor behavior in a wide electromagnetic interference (EMI)-frequency range from 100 Hz to 30 MHz. This model is suitable for prediction of common mode current, EMI problems and terminal over-voltage analysis. The model parameters are estimated by asymptotical method using novel differential and...
This paper presents a novel nonlinear robust controller for a doubly-fed induction generator based on passivity and high-order sliding modes techniques. The control objectives are the power factor and stator active power output regulation. At first, a state reference vector is defined according to the desired operation point taking into account the control objectives. Then, to take advantage of the...
HF radar systems are widely used for the measurement of ocean surface currents and wave parameters. Theoretical analysis of high frequency radio wave backscattering from the sea has been derived in the past. Also, the relationship between Bragg frequencies and surface currents is determined and has been proved by HF radars. It is known that when surface currents are present, the Bragg frequencies...
Biometrics is a branch of science which recognizes the person by using its behavioral and physiological characteristics. Limitations of unimodal biometric systems lead the researchers to investigate a system based on fusion of some unimodal biometric systems. In this paper, an innovative verification framework based on game theory-based rank-level fusion of the high frequency information of ear images...
This paper provides a theoretical analysis to consolidate the theory of “adaptive” target detection in the surveillance channel of passive bistatic radars where noise, strong returns of clutter and target returns are present. It is known in the literature that by generating the mixing product for each bistatic sample delay in the surveillance channel using the preprocessed and multipath-free reference...
Role and importance of DC/DC converters have been more and more fluoresced in distributed power systems applications such as photovoltaic, wind turbine, gas micro turbine and fuel cells. With regard to this characteristic, distributed power systems have to employ a high step-up DC/DC converter. Low voltage supply with wide range voltage drop is a distinguishing feature of these sources considering...
Appropriate clustering and routing algorithms in multi-hop wireless sensor networks considerably affect the energy consumption and prolong the network lifetime. Besides, the required inter-cluster communications in these networks may lead to imbalanced energy consumption among cluster-heads that in turn decreases the network lifetime. In this paper, a gradient-based clustering algorithm for energy-efficient...
Noninvasive extraction of the fetal electrocardiogram (fECG) from multichannel maternal abdomen recordings is an emerging technology used for fetal cardiac monitoring and diagnosis. The strongest interference for the fECG is the maternal ECG (mECG), which is not always removed through conventional methods, including blind source separation, especially for low-rank abdominal recordings. In this work,...
This paper considers the problem of passivity-based sliding mode control of uncertain nonlinear systems. For this purpose, two cases are studied. In the first case, it is assumed that only the matched uncertainties exist in the system dynamics. In this case, the passivity-based control approach is used to design an appropriate sliding manifold with a flexible structure such that the asymptotic stability...
In this paper, we analytically investigate the effects of the two samples of mechanical deformations, i.e., uniaxial and torsional strains on the electronic band structure and the density of states of the single-walled carbon nanotubes (SWCNTs) using the nearest neighbor, the third-nearest neighbor (3-NN-TB) and the fifth-nearest neighbor tight-binding (5-NN-TB) approaches to compare the estimated...
Next generation wireless communication technologies such as wireless metropolitan area network, long-term evolution (LTE), and LTE advanced are designed to deploy cooperative relaying incorporated with orthogonal frequency division multiplexing system. In addition to the higher data rate, these technologies allow users to have a faster mobility than the previous standards. However, due to the fast...
Smart grid (SG) is explained as an intensification of 20th century grid. It delivers electricity from the production side to the consumer side using modern digital technology to reduce the customer’s energy consumption and save energy. Demand side management (DSM) has great importance in smart grids, since it ensures demand balance in real time. Along with improvement in cost reduction, we have worked...
The polar coding method which was proposed by Arikan is mentioned. In this article, we will apply this method for the polarization of a general Multiple Access Channel. It will be shown that the polarization of a general Multiple Access Channel with a point-to-point channel can be given a more achievable rate region in the general form. The encoding and decoding complexity for these codes are ...
In this paper, a low-power on-chip temperature sensor, which is appropriate for food monitoring in ultra-high frequency radio frequency identification (UHF RFID) passive tag is proposed. For designing sensor core, MOSFET is used as a temperature sensing element and for decreasing the power consumption, and transistors are biased in sub-threshold region. In this sensor for converting the temperature...
This paper presents the model-free tuning of Fractional Order Proportional–Integral–Derivative (FOPID) controllers for twin rotor multi input multi output system (TRMS) using master–slave Stochastic Multi-parameters Divergence Optimization (SMDO) method. Second Order System (SOS) is used as a reference model for guidance of tuning process. Master and slave SMDOs perform optimization of design coefficients...
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