Articole ştiinţifice: Recent submissions

Now showing items 1921-1940 of 4684

Numerical Analysis of the Peculiarities of Flow Rate Adjustment in Armature Vibrating Pump in Hydraulic Systems Applications

TURCANU, Adrian; NUCA, Ilie; MAKAL, Jarosław (IEEE, 2020)

The paper refers to the equipment for the espresso production process and the peculiarities of hydraulic systems and pump functioning. It presents a new approach in modelling and simulation of the armature vibrating pump ...
Modeling of the temperature control system of the plastification cylinder of injection molding machine

CAZAC, Vadim; NUCA, Ilie (“Henri Coanda” Air Force Academy Romania, 2020)

At present the development of industry of plastic products tends to grow up the quality of products obtained by this method and increase productivity. The common denominator on quality, productivity and cost efficiency in ...
Microprocessor control system of the SDMS-103 electronic equipment for dc trolleybus trfor DC trolleybus traction

NUCA, Ilie; EŞANU, Vitalie; MOTROI, Alexandru; NUCA, Iurie (Asociatia Generala a Inginerilor din Romania, 2012)

In lucrare se prezintă sistemul de control şi funcţiile echipamentului electronic SDMC-103 de tracţiune al troleibuzului cu motor de curent continuu. Este descrisă structura sistemului de control cu microcontroler AtMega128 ...
Implementation of the vector control system for traction asynchronous motors

RÎMBU, Iurie; EŞANU, Vitalie; MIHALACHI, Vitalie; RÎNCĂU, Andrei; NUCA, Ilie; IVANOV, Segiu (University of Craiova, 2011)

The paper describes the InBus-103 electronic equipment for the trolleybus traction system with vector controlled asynchronous motor. Based on the experience acquired during more years and hundreds of equipment installed ...
Implementation of the automaticaly adjustable tamping process in the automated coffee brewing

TURCANU, Adrian; NUCA, Ilie (IEEE, 2016)

The paper refers to the equipment for the espresso production process and some possibilities to increase the quality of the final product by implementing an adjustable tamping process. At present, the parameters of the ...
Electric machines with axial magnetic flux

NUCA, I.; AMBROS, T.; BURDUNIUC, M.; DEACONU, S. I.; TURCANU, A. (IOP Publishing, 2018)

The paper contains information on the performance of axial machines compared to cylindrical ones. At the same time, various constructive schemes of synchronous electromechanical converters with permanent magnets and ...
Development of Traction System with Six Phase Induction Motor for Urban Passenger Vehicle

NUCA, Ilie; CAZAC, Vadim; TURCANU, Adrian; BURDUNIUC, Marcel (IEEE, 2020)

The paper deals with six-phase traction systems for urban electric passenger vehicles. The general structure of a trolleybus/bus driven by a six-phase induction motor with symmetrical phase distribution is designed. A new ...
Design of Separately Windings Control System of Series/Compound DC Traction Motors

NUCA, Ilie; IZMANĂ, Ion; ESANU, Vitalie; MOTROI, Alexandru (University of Craiova, 2018)

This paper focuses on the problem of the control system of Series/Compound DC motor in both areas of speed adjustment. Traditional field weakening is achieved by means of resistances and contactors wich inserting and/or ...
AC Drive Control System of the Wire Drawing Machine with DTC Control and Fuzzy Controller

CAZAC, Vadim; NUCA, Ilie; TODOS, Petru (IEEE, 2016)

One of the biggest challenges in wire drawing processes, is to keep the straining force of the wire almost constant of the allowed maximum. The paper presents a high performance variable speed AC drive with DTC control of ...
A review of the multiphase electric machines

RAŢĂ, Iurie; TODOS, Petru; NUCĂ, Ilie (Technical University of Moldova, 2007)

The electrical machines with increased number of phases (m>3) are destined for the equipment of the installations and apparatus that function in autonomic regime and presents a special importance for different industrial ...
Theoretical and Experimental Research on the Technological Process of Spraying and Dynamics of the Motorized Agricultural Platform

CHIRIŢĂ, Polifron-Alexandru; CRISTESCU, Corneliu; RĂDOI, Radu; CIOBANU, Oleg (Hidraulica Magazine, 2018)

This article presents the results of a research developed by INOE2000 - IHP, as well as a functional model of a motorized agricultural platform used for spraying in horticulture. This is part of a complex crop monitoring ...
Studiu privind proiectarea organului de lucru al staţiei pilot şi prototipurilor industriale ale microhidrocentralelor

CIOBANU, Oleg (Universitatea de Stat „Alecu Russo”, Bălţi, 2011)

Energia, o resursă complexă, ocupă poziţia dominantă în căutarea unei dezvoltări permanente a societăţii umane. Efectul de la poluarea aerului şi schimbarea climei asupra mediului înconjurător impun, într-un mod categoric, ...
SEM, EDS and XPS studies of AC & DC PEO coatings obtained on titanium substrate

ROKOSZ, K.; HRYNIEWICZ, T.; DUDEK, Ł.; PIETRZAK, K.; RAAEN, S.; MALORNY, W.; CIUPERCA, R. (IOP Publishing, 2019)

The porous coatings may be fabricated on titanium substrate by Plasma Electrolytic Oxidation (PEO), known also as Micro Arc Oxidation (MAO), under AC or DC regimes. The obtained surfaces were characterized by Scanning ...
Porous coatings obtained on titanium after IMPULSE – PEO processes

ROKOSZ, K.; HRYNIEWICZ, T.; DUDEK, Ł.; PIETRZAK, K.; RAAEN, S.; MALORNY, W.; CIUPERCA, R. (IOP Publishing, 2019)

The surface stereometry and chemical compositions of porous coatings obtained during Plasma Electrolytic Oxidation, PEO / (Micro Arc Oxidation, MAO) processes with use of impulse regime with different frequencies were the ...
Characterisation of porous coatings formed on titanium under AC plasma electrolytic oxidation

ROKOSZ, Krzysztof; HRYNIEWICZ, Tadeusz; GAIASCHI, Sofia; CHAPON, Patrick; RAAEN, Steinar; DUDEK, Łukasz; PIETRZAK, Kornel; MALORNY, Winfried; CIUPERCA, Radion (MATEC Web Conferences, 2018)

The Plasma Electrolytic Oxidation (PEO) process may be used to fabricate porous coatings on titanium. The ranges of voltages used In case of these plasma treatments are different. It has been found that for DC PEO processing ...
Thermoelectric properties of p-type TTT2I3 organic crystals as a function of temperature

SANDULEAC, Ionel; CASIAN, Anatolie (Academia de Ştiinţe a Moldovei, 2019)

Nanostructured organic materials of tetrathiotetracene-iodide (TTT2I3) are very prospective p – type thermoelectric material. The internal structure is pronounced quasi-one dimensional, with molecular chains spaced at ~1 ...
The dynamic behavior of quantum dots laser under the influence of external optical feedback from five external cavities

OLOINIC, Tatiana (Academia de Ştiinţe a Moldovei, 2019)

In this paper, the dynamic behavior of quantum dots laser under the influence of a multiple optical feedback is described. The laser’s structure consists of an active section and additional sections from which the optical ...
Features of correlation of electronic properties with an atomic scale characterization in the Bi bicrystal interfaces

MUNTYANU, F. M.; SIDORENKO, A. S.; CHISTOL, V. (Academia de Ştiinţe a Moldovei, 2019)

We present the results of study of the quantum transport, magnetic and superconducting properties of Bi bicrystals at low temperatures and high magnetic fields up 40T to highlight the electronic properties correlations ...
Thermomagnetic transport due to the superconducting interfaces in inclination bicrystals of Bi

MUNTYANU, F. M.; CONDREA, E. P.; CHISTOL, V.; MUNTEAN, Yu. (Academia de Ştiinţe a Moldovei, 2019)

The group- V semimetals are of major interest for solid state physics, because of easy access to the quantum limit in high magnetic fields and possibility of studying the unusual behaviour of Dirac electrons under extremal ...
Obtaining highly conductive oxide single crystals for manufacturing nanotemplates

COLIBABA, G.; MONAICO, E.; RUSNAC, D. (Academia de Ştiinţe a Moldovei, 2019)

The present investigation is devoted to obtaining ZnO, In2O3 and Ga2O3 single crystals by chemical vapor transport (CVT). The thermodynamic analysis of the composition of CVT systems with ZnO, In2O3, Ga2O3 and various ...

Now showing items 1921-1940 of 4684

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