Tuning of PID controller parameters is an important problem in control field. To solve this problem we used an Advanced Particle Swarm Optimization which is powerful stochastic evolutionary algorithm that is used to find the global optimum solution in search space. The proposed method has fast searching speed compared to standard PSO. Furthermore this method accelerates the convergence. However...

The main objective of this work is to develop a mathematical model to evaluate optimum sanding conditions of Europen black pine (Pinus nigra). Samples were sanded using different of grit size, feed rate, cutting speed and depth of cut. Average surface roughness (Ra) values of each type of specimens were measured employing a stylus type of equipment. Interaction between sanding parameters and su...

A high speed IP address lookup engine with a reasonable memory cost is a key factor for designing a router at wire speed. This paper proposes a hardware solution that performs each IP address lookup in a few number of memory accesses with minimum amount of memory requirement. Our solution is based on dividing destination IP address into several segments. For finding the optimum address segmenta...

The paper gives design methods dedicated to speed control of Direct Current (DC) and Brushless Direct Current (BLDC) motors in the framework of servo systems. Two design approaches are offered for position and speed control of servo systems with inner current control loops. The PI and PID controllers in these approaches are tuned on the basis the Extended Symmetrical Optimum method and of the d...

Quality and productivity are two important aspects that are inter-related in any machining operation The objective of this work is to estimate the influence of machining parameters and to determine their optimum conditions in manufacture of cast-iron disintegrated flywheel. The parameters considered are speed, feed and depth of cut where as the response are material removal rate and surface rou...

This paper presents a control strategy for a grid connected doubly fed induction generator (DFIG)-based wind energy conversion system (WECS).Control strategies for the grid side and rotor side placed in the rotor circuit of the Doubly Fed Induction Generator (DFIG) are presented along with the mathematical modeling of the Wind Energy Conversion System. In this control approach, wind generators ...

This work represents a mathematical analysis and simulation of dc-motor electric drive control system with variable moment of inertia. A separately-excited dc motor is used in this control system. A mathematical model for this motor has been simulated and tested in Matlab/Simulink. A closed-loop control system for this dc electric drive system is proposed. The proposed control system is based o...

In this paper, we propose a fusion of PSO-ABC algorithm based on the research of particle swarm optimization (PSO) algorithm and artificial bee colony (ABC). The former is apt to trap in local optimum, while the later has great ability of global searching and lower convergence speed in the later evolution process. Using the evolution of artificial swam, we gained a global optimum which was appl...

High-performance polymer microlens arrays were fabricated by means of withdrawing substrates of patterned wettability from a monomer solution. The f-number (f(#)) of formed microlenses was controlled by adjustment of monomer viscosity and surface tension, substrate dipping angle and withdrawal speed, the array fill factor, and the number of dip coats used. An optimum withdrawal speed was identi...

Recently, continuous optimization methods have become quite popular since they can deal with a variety of non-smooth convex problems. They are inherently parallel and therefore well suited for GPU implementations. Most of the continuous optimization approaches have in common that they are very fast in the beginning, but tend to get very slow as the solution gets close to the optimum. We therefo...