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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
In this workshop we propose a USB based control platform with a high speed USB communication interface using the Linux based free software Scilab/XCos/RTAI. The workshop consists of six hands on presentations on the use of the experimental platform for teaching the main automatic control concepts such as stability, model, transfer function, current loop, parameter tuning, proportional control action,...
Power electronics based microgrids have advantages in terms of flexibility, reliability, and power density. However, such microgrids are hard to control due to reduced inertia, increased uncertainties, and wide range of operating conditions. In such systems, the strong physical couplings among subsystems (inverter-interfaced distributed generators) must be properly considered. Simply introducing existing...
This work describes a simple method to produce highly luminescent carbon quantum dots (CQDs) emitting blue or green light. The method consists of the carbonization of citric acid at 250 °C under ambient condition and a further surface functionalization. The UV-Vis spectrum of these carbon nanostructures exhibited a well-resolved absorption band at 320 nm which was attributed to the n-π∗ transition...
This paper focuses on the influence of PVP concentration on physical properties of the silver nanoparticles (AgNps). AgNps were synthesized by polyol method in the presence of Polyvinylpyrrolidone (PVP) acting as a stabilizing agent in a molar relation of AgNO3: PVP = 1:1, 1:1.5 and 1:2. The optical and morphological characterizations of synthesized AgNps were performed using ultra violet visible...
Focused ultrasound can be applied from low intensity ultrasound for non-thermal therapy as drug deliver, gene therapy, etc. to high intensity ultrasound for tumor ablation in oncology. However, to have an adequate therapy planning, it is required to fully understand the parameters affecting the acoustic field produced by concave radiators. Traditional ideal models usually do not produce adequate results...
This paper presents the application of a robust nonlinear optimal controller for regulating the active and reactive power in a grid-connected three-phase inverter, which includes an LCL filter to mitigate the total harmonic distortion. The optimal control law is derived from the Hamilton-Jacobi-Bellman equation for state-dependent coefficient factorized nonlinear systems. An integral control term...
In this work we recover the Discrete Hill's equation introduced by Chulaevsky in 1989 [11] and give it a graphical interpretation of parametric stability [12] i.e. discrete Arnold tongues. We give the nonoscillatory criteria for discrete Hill's equation and proved that all the nonoscillatory solution of the discrete Hill's equation fall into the 0-th Arnold tongue.
This work presents a study of the changes in the optical, morphological and compositional properties of SiOC thin films obtained by hot wire chemical vapor deposition (HWCVD) technique. A mixture of hydrogen (H2), oxygen (O2) and monomethyl-silane (MMS) was used as reactant gas, which was passed through a tantalum filament (Ta) in order to be decomposed and obtained the film. Changes were made in...
In the present work, hydroxyapatite (HAp, Ca10(PO4)6(OH)2) synthesis was carried out using hydrothermal method with calcium hydroxide (Ca(OH)2) and ammonium phosphate((NH4)2HPO4) as precursors. Two different HAp powders were obtaining by varying pH by adding nitric acid (pH =9) and ammonium hydroxide (pH = 10). All the synthesis was carried out in an autoclave at 200 °C for 24 h. The obtained products...
Titanium dioxide powders were obtained by the homogeneous precipitation technique by using two different titanium precursors, namely, titanium (IV) butoxide and titanium (IV) isopropoxide. The solution was prepared by mixing the Ti precursors in methanol, after that, acetic and sulfuric acid were slowly added. The solution was kept under constant magnetic stirring until obtaining a white precipitate...
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