Shahrood University of Technology
Shahroud, Iran

University of Shahrood is a university in the city of Shahrood in Semnan Province in Iran.The university was established as "The Shahrood College of Mines" in 1973, and was elevated to university status in 1994.Finally, thanks to the efforts and pursuit of university president and the staff at the time and the expansion of different programs and the development of post-graduate levels, another great achievement was gained for the university in that the Development Council of the ministry in a session dated 20029 announced his agreement with the promotion of the university to Shahrood University of technology,The university currently operates 11 faculties, offering 32 degrees to students at bachelors, masters, and PhD levels.The significant achievements of the university from 1997 up to now are as following:1. setting up the Ph.D. programs for mining engineering, physics and electrical engineering 2. setting up the master programs in 3. promotion of Shahrood University to Shahrood University of technology 4. the approval of long-term Academic Program of the university:According to this program approved by the Council of Development in session dated 200216 and due to the potentials of the university, the number of programs will increase to 93 by the end of the Nation Fourth Program of Development.The university was the first university in Iran and the forth in the world to offer Robotics Engineering at bachelors level.The university's faculty of mining and agriculture is among the best, offering numerous courses up to the PhD level. The university is among the growing universities in Iran.This university is one of several technical universities in Iran. Technical universities of Iran include: 1.Sharif university of Technology2.Amirkabir university of Technology3.Iran university of Science & Technology4.K. N. Toosi University of Technology5.Shahrood University of Technology 6.Sahand University of Technology 7.Babol Noshirvani University of Technology Wikipedia.

Time filter
Source Type

Fadafan K.B.,Shahrood University of Technology
European Physical Journal C | Year: 2010

The effects of charge and finite 't Hooft coupling correction on drag force and jet quenching parameter are investigated. To study charge effect and finite 't Hooft coupling correction, we consider Maxwell charge and Gauss-Bonnet terms, respectively. The background is Reissner-Nordström-AdS black brane solution in Gauss-Bonnet gravity. It is shown that these corrections affect drag force and jet quenching parameter. We find an analytic solution of drag force in this background which depends on Gauss-Bonnet coupling and charge. We set Gauss-Bonnet coupling to be zero and find drag force in the case of Reissner-Nordström-AdS background. © 2010 Springer-Verlag / Societá Italiana di Fisica.

Fadafan K.B.,Shahrood University of Technology
European Physical Journal C | Year: 2011

We use the gauge-string duality to study heavy quarks in the presence of higher derivative corrections. These corrections correspond to the finite-coupling corrections on the properties of heavy quarks in a hot plasma. In particular, we study the effects of these corrections on the energy loss and the dissociation length of a quark–antiquark pair. We show that the calculated energy loss of heavy quarks through the plasma increases. We also find in general that the dissociation length becomes shorter with the increase of coupling parameters of higher curvature terms. © Springer-Verlag / Società Italiana di Fisica 2011.

Hassanabadi H.,Shahrood University of Technology
European Physical Journal B | Year: 2010

Our approach is quasi-analytical. We consider the Hamiltonian of a two-electron quantum dot composed of quadratic plus Coulomb terms as well as a term related to the interaction with the external magnetic field. To avoid the complexity, the Taylor expansion of the effective potential is introduced into the problem and thereby a solution is found for the eigenvalues of the corresponding two-body Schrödinger equation in terms of the Wigner parameter. We have finally made a comparison with some other theoretical results. © 2010 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg.

Alfi A.,Shahrood University of Technology
International Journal of Innovative Computing, Information and Control | Year: 2012

The difficulties of online identification mainly come from the unavoidable computational time to find a solution. This paper presents a novel particle swarm optimization (PSO), namely Dynamic Inertia Weight PSO (DIW-PSO), to cope with the online system parameter identification problem. In the proposed algorithm, to increase the efficiency and convergence speed of PSO algorithm, the inertia weight for every particle is dynamically updated based on the feedback taken from the fitness of the best previous position found by the particle. Also, a novel methodology is incorporated into DIW-PSO to be able to effectively response and detect any parameter variations of system to be identified. To illustrate the performance of DIW-PSO algorithm, a set of two wellknown representative benchmark functions is employed to evaluate it in comparison with Real-Coded Genetic Algorithm (RC-GA) and PSO with Nonlinearly Decreasing Inertia Weight (PSO-NDW). Simulations indicate that the DIW-PSO improves the search performance on the benchmark functions significantly. Also, the feasibility of this algorithm is demonstrated through identifying the parameters of a well-known nonlinear Lorenz chaotic system. The results exhibit that the proposed algorithm is a good promising PSO algorithm for online parameter identification. © 2012 ICIC International.

Nazemi A.,Shahrood University of Technology
Engineering Applications of Artificial Intelligence | Year: 2013

In this paper, a neural network model is constructed on the basis of the duality theory, optimization theory, convex analysis theory, Lyapunov stability theory and LaSalle invariance principle to solve general convex nonlinear programming (GCNLP) problems. Based on the Saddle point theorem, the equilibrium point of the proposed neural network is proved to be equivalent to the optimal solution of the GCNLP problem. By employing Lyapunov function approach, it is also shown that the proposed neural network model is stable in the sense of Lyapunov and it is globally convergent to an exact optimal solution of the original problem. The simulation results also show that the proposed neural network is feasible and efficient. © 2012 Elsevier Ltd.

Fateh M.M.,Shahrood University of Technology
Nonlinear Dynamics | Year: 2010

This paper focuses on the uncertainty bound parameter (UBP) to design the robust control of electrical manipulators. The UBP is commonly obtained by considering the worst case of uncertainties in bounding functions. However, too high estimation of UBP may cause saturation of input, higher frequency of chattering in the switching control laws, and thus a bad behavior of the whole system, while too low estimation of UBP may cause a higher tracking error. A proper UBP is preferred to improve the performance of robust control system. A simple, less dependent and proper UBP is proposed based on the nominal model of electrical manipulator and feedbacks of joint accelerations. This work is motivated by recent experimental results in measuring acceleration by optical encoder. Modeling of an electrical manipulator with presence of uncertainties is presented for control purposes. The proposed robust control is justified by stability analysis. © 2010 Springer Science+Business Media B.V.

Bakherad M.,Shahrood University of Technology
Applied Organometallic Chemistry | Year: 2013

The use of aqueous media in palladium-catalyzed reactions has become popular because water-based synthetic processes are inherently safer as well as being inexpensive. Moreover, it does not require dry solvents, and the products may easily be isolated by extraction, which greatly facilitates the operation. Thus the use of water in palladium-catalyzed reactions represents one of the most economically and environmentally viable options for many organic transformations. In this review, recent developments of Sonogashira reaction in water or aqueous media will be disclosed. Copyright © 2013 John Wiley & Sons, Ltd.

Fateh M.M.,Shahrood University of Technology
International Journal of Robust and Nonlinear Control | Year: 2010

A novel robust impedance control approach is developed to control dynamic behavior of a vehicle subject to road disturbances. This behavior is predetermined as an impedance rule to achieve passenger comfort and vehicle handling by the use of a hydraulically actuated suspension system. Impedance control law is simple, free of model and efficient to apply for a broad range of road conditions. Moreover, it relates comfort to handling. This control approach can provide a desired comfort when passing a bump, and both desired comfort and handling after passing a bump. Robust position and force controls are used to implement the robust impedance control with the presence of uncertainties. A transformed proportional-integral-derivative control is proposed to perform the robust control. The system stability is analyzed and analytical results are confirmed by simulations. A quarter-car model of suspension system and a nonlinear model of hydraulic actuator are used to simulate the control system. Copyright © 2009 John Wiley & Sons, Ltd.

Fateh M.M.,Shahrood University of Technology
Nonlinear Dynamics | Year: 2012

So far, control of robot manipulators has frequently been developed based on the torque-control strategy. However, two drawbacks may occur. First, torque-control laws are inherently involved in complexity of the manipulator dynamics characterized by nonlinearity, largeness of model, coupling, uncertainty and joint flexibility. Second, actuator dynamics may be excluded from the controller design. The novelty of this paper is the use of voltage control strategy to develop robust tracking control of electrically driven flexible-joint robot manipulators. In addition, a novel method of uncertainty estimation is introduced to obtain the control law. The proposed control approach has important advantages over the torque-control approaches due to being free of manipulator dynamics. It is computationally simple, decoupled, well-behaved and has a fast response. The control design includes two interior loops; the inner loop controls the motor position and the outer loop controls the joint position. Stability analysis is presented and performance of the control system is evaluated. Effectiveness of the proposed control approach is demonstrated by simulations using a three-joint articulated flexible-joint robot driven by permanent magnet dc motors. © 2011 Springer Science+Business Media B.V.

Fateh M.M.,Shahrood University of Technology
Nonlinear Dynamics | Year: 2012

This paper is devoted to the nonlinear tracking control of electrically driven flexible-joint manipulators using the voltage control strategy. Despite the torque control laws that are involved in the complexity of manipulator dynamics, the proposed control law is free from manipulator dynamics. This novelty is for adopting the voltage control strategy to derive a simple robust adaptive control under both structured and unstructured uncertainty. The proposed control approach has a fast response with a good tracking performance under the well-behaved control efforts in the form of decentralized control. The control method is justified by the stability analysis and simulated on a flexible-joint electrically driven robot manipulator. © 2011 Springer Science+Business Media B.V.

Loading Shahrood University of Technology collaborators
Loading Shahrood University of Technology collaborators