Search results for: ELECTRIC ARC WELDING

• Effect of Semiconductor Element Substitution on the Electric Properties of Barium Titanate Ceramics

  Publication

  • B. Garbarz-Glos
  • A. Lisińska-Czekaj
  • D. Czekaj
  • W. Bąk

  - ARCHIVES OF METALLURGY AND MATERIALS - Year 2016

  The investigated ceramics were prepared by a solid-state reaction from simple oxides and carbonates with the use of a mixed oxide method (MOM). The morphology of BaTi0.96Si0.04O3 (BTSi04) ceramics was characterised by means of a scanning electron microscopy (SEM). It was found that Si+4 ion substitution supported the grain growth process in BT-based ceramics. The EDS results confirmed the high purity and expected quantitative composition...

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• LabVIEW-based intelligent system of protection against electric shock for photovoltaic installations

  Publication

  • S. Czapp
  • D. Świsulski

  - Year 2017

  Evaluation of shock hazard in installations with photovoltaic sources of energy is more complicated than in a conventional low voltage system. In case of earth fault in photovoltaic generators, that are connected to the AC power public grid, a composite waveform of earth fault current in the installation may occur. For composite waveforms, the safety criteria should be modified. The paper considers the effect of the composite waveforms...

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• Sensorless algorithm for sustaining controllability of IPMSM drive in electric vehicle after resolver fault

  Publication

  • L. Jarzębowicz
  • K. Karwowski
  • W. Kulesza

  - CONTROL ENGINEERING PRACTICE - Year 2017

  This paper presents a sensorless algorithm designated for the emergency control of an interior permanent magnet synchronous motor (IPMSM) drive in electric or hybrid vehicle. The algorithm is based on analysing the derivatives of motor phase currents measured over the duration of particular inverter states. The method is computationally simple and does not require additional hardware since the derivatives are measured indirectly....

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• Nonlinear model of a synchronous generator for analysis of more electric aircraft power systems

  Publication

  • F. Kutt
  • M. Michna
  • P. Chrzan
  • M. Ronkowski

  - Maszyny Elektryczne : zeszyty problemowe - Year 2009

  A nonlinear model for studying a variable-speed synchronous generator (SG) in more electric aircraft (MEA) power system has been developed. The saturation effects of the SG magnetic circuit have been considered. The model has been implemented in the Synopys/Saber simulation environment. The modelling language MAST has been used to elaborate the SG model. The model exhibit a network with the same number of external terminals/ports...

• Angle Tracking Observer for Filtering Rotor Position Estimates in Sensorless Electric Drives

  Publication

  • L. Jarzębowicz
  • M. Cisek
  • A. Opaliński

  - Elektronika Ir Elektrotechnika - Year 2016

  Sensorless electric drives use measurements of electrical quantities to estimate rotor position and speed. Measurement errors deteriorate the estimation accuracy, thus additional means are necessary to remove high-frequency components from estimated signals. This paper proposes to use an Angle Tracking Observer (ATO) for reducing noise in rotor position estimates, which is related to random errors in the measurements. A simplified,...

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• Segmentation of the electric scooter market in Poland

  Publication

  • J. Kubiczek
  • B. Hadasik

  - Ekonometria - Year 2020

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• Modern Hybrid Excited Electric Machines

  Publication

  • M. Wardach
  • R. Palka
  • P. Paplicki
  • P. Prajzendanc
  • T. Zarebski

  - ENERGIES - Year 2020

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• Numerical Simulations of Laser and Hybrid S700MC T-Joint Welding

  Publication

  • T. Kik
  • J. Górka

  - Materials - Year 2019

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• APPLICATION OF NUMERICAL SIMULATIONS ON X10CRWMOVNB9-2 STEEL MULTILAYER WELDING

  Publication

  • J. Moravec
  • T. Kik
  • I. Novakova

  - MM Science Journal - Year 2016

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• Metrological analysis of an computerized system of protection against electric shock in circuits with variable speed drives

  Publication

  • D. Świsulski
  • S. Czapp

  - Przegląd Elektrotechniczny - Year 2015

  Drive systems, that can be operated at variable speed, are equipped with power electronics converters. This causes distortion of the earth current, and consequently the need to take into account the use of proper protective devices in relation to earth current harmonics. This paper presents a system for protection against electric shock in circuits with power electronics converters and metrological analysis indicating the requirements...

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• Non-Salient Brushless Synchronous Generator Main Exciter Design for More Electric Aircraft

  Publication

  • F. Kutt
  • M. Michna
  • G. A. Kostro

  - ENERGIES - Year 2020

  This paper presents a prototype of high speed brushless synchronous generators (BSG) design for the application in autonomous electric power generation systems (e.g., airplane power grid). Commonly used salient pole field of the main generator part of BSG was replaced with a prototype non-salient pole field. The main objective of the research is an investigation into the advantages and disadvantages of a cylindrical field of the...

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• Influence of electric, magnetic and electromagnetic fields on the circadian system – current stage of knowledge

  Publication

  • B. Lewczuk
  • G. Redlarski
  • A. Żak
  • N. Ziółkowska
  • B. Przybylska-Goronowicz
  • M. Krawczuk

  - JOURNAL OF BIOMEDICINE AND BIOTECHNOLOGY - Year 2014

  One of the side effects of each electrical device work is the electromagnetic field generated near its workplace. All organisms, including humans, are exposed daily to the influence of different types of this field, characterized by various physical parameters. Therefore, it is important to accurately determine the effects of an electromagnetic field on the physiological and pathological processes occurring in cells, tissues and...

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• A unified approach to the analysis of electric energy and fuel consumption of cars in city traffic

  Publication

  • J. Kropiwnicki

  - ENERGY - Year 2019

  Forecasting fuel and electricity consumption is an important factor determining the direction of changes in road engineering solutions, traffic management, selection of routes for public transport and development more efficient car drive systems. With a reliable and easy-to-use computational tool, it is possible to reduce the consumption of primary energy sources and reduce the emission of toxic compounds in cities. An analysis...

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• Onboard Energy Storage and Power Management Systems forAll-Electric Cargo Vessel Concept

  Publication

  • D. Karkosiński
  • W. Rosiński
  • P. Deinrych
  • S. Potrykus

  - ENERGIES - Year 2021

  This paper presents an innovative approach to the design of a forthcoming, fully electric-powered cargo vessel. This work begins by defining problems that need to be solved when designingvessels of this kind. Using available literature and market research, a solution for the design of apower management system and a battery management system for a cargo vessel of up to 1504 TEUcapacity was developed. The proposed solution contains...

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• Static electric multipole susceptibilities of the relativistic hydrogenlike atom in the ground state: Application of the Sturmian expansion of the generalized Dirac-Coulomb Green function

  Publication

  • R. Szmytkowski
  • G. Łukasik

  - PHYSICAL REVIEW A - Year 2016

  The ground state of the Dirac one-electron atom, placed in a weak, static electric field of definite $2^{L}$ polarity, is studied within the framework of the first-order perturbation theory. The Sturmian expansion of the generalized Dirac-Coulomb Green function [R. Szmytkowski, J. Phys. B: At. Mol. Opt. Phys. 30, 825 (1997); erratum R. Szmytkowski, J. Phys. B: At. Mol. Opt. Phys. 30, 2747 (1997)] is used to derive closed-form analytical...

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• A Low-Profile Metal-backed Dipole Loaded with Closely Coupled Arc-shaped Open Stubs for On-metal Tag Design with Wide Frequency Tuning Capability

  Publication

  • F. Erman
  • S. Kozieł
  • E. Lim
  • L. Leifsson
  • E. Hanafi
  • M. Murugesh

  - IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION - Year 2024

  This research has presented a single-layer metal-backed dipole antenna, which consists of a feedline loaded with two pairs of closely-coupled arc-shaped open stubs, for designing a metal-mountable tag that features tuning capability over a wide range of frequency. Here, the stubs can generate sufficient inductive reactance for bringing down the tag resonant frequency tunable in both the regulated UHF RFID passbands (North American...

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• Unidirectional DC/DC Converter with Voltage Inverter for Fast Charging of Electric Vehicle Batteries

  Publication

  • J. R. Szymanski
  • M. Żurek-mortka
  • D. Wojciechowski
  • N. Poliakov

  - ENERGIES - Year 2020

  The paper proposes the adaptation of the industrial plant’s power network to supply electric vehicle (EV) fast-charging converters (above 300 kW) using renewable energy sources (RESs). A 600 V DC microgrid was used to supply energy from RESs for the needs of variable speed motor drives and charging of EV batteries. It has been shown that it is possible to support the supply of drive voltage frequency converters (VFCs) and charging...

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• Specificity of automatic control of micro-turbines (steam or gas -driven and expanders) in dispersed generation system of heat and electric power

  Publication

  • Z. Domachowski

  - Polish Maritime Research - Year 2009

  This paper presents specific problems of automatic control of steam micro-turbines and expanders intended for the dispersed, combined generating of heat and electric power. The investigations concern ensurance of certainty of energy supply and its required quality.

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• Micro Arc Oxidation of Mechanically Alloyed Binary Zn-1X (X = Mg or Sr) Alloys

  Publication

  • K. Kowalski
  • M. Drzewiecki
  • M. Jurczyk

  - Crystals - Year 2023

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• Electric transport in organic system with planar DBP/F16ZnPc junction on the basis of direct current and small signal admittance spectra analysis

  Publication

  • R. Marczyński
  • J. Szostak
  • R. Signerski
  • G. Jarosz

  - SYNTHETIC METALS - Year 2018

  The objective of this work was to determine electric transport in the organic device based on a planar junction of electron donor and electron acceptor materials, namely ITO/MoO3/DBP/F16ZnPc/BCP/Ag. The analysis reported herein was based on direct current-voltage measurements and small-signal admittance spectra in the dark and under illumination. Such analysis may provide information on potential barriers, parasitic resistances...

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• Modeling of Heat Source Based on Parameters of Electron Beam Welding Process

  Publication

  • P. Lacki
  • K. Adamus
  • K. Wojsyk
  • M. Zawadzki
  • Z. Nitkiewicz

  - ARCHIVES OF METALLURGY AND MATERIALS - Year 2011

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• Effect of welding conditions on susceptibility to cold cracking of underwater welded joints

  Publication

  • D. Fydrych
  • T. Kozak

  - Year 2006

  Przedstawiono wybrane aspekty spawalności stali przy spawaniu pod wodą metodą lokalnej komory suchej. Zwrócono szczególną uwagę na skłonność do tworzenia peknięć zimnych w SWC. Przy pomocy planowania doświadczeń określono ilościowy wpływ parametrów spawania na naprężenia krytyczne z próby implant.

• Numerical Simulation of Electron Beam Welding Process of Inconel 706 Sheets

  Publication

  • P. Lacki
  • K. Adamus
  • K. Wojsyk
  • M. Zawadzki

  - Key Engineering Materials - Year 2011

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• Determining diffusible hydrogen amounts using the mercury method. Welding International

  Publication

  • D. Fydrych
  • J. Łabanowski

  - Year 2012

  W artykule przedstawiono szczegółową charakterystykę procedury oznaczania ilości wodoru dyfundującego metodą rtęciową na tle innych metod badawczych i aktualnego stanu wiedzy dotyczącego rozpatrywanego zagadnienia. Omówiono klasyfikację wodoru występującego w złączu spawanym oraz metody oznaczania ilości wodoru dyfundującego w stopiwie ze zwróceniem szczególnej uwagi na metodę rtęciową jako metodę podstawową. Zestawiono zależności...

• Laser Dissimilar Welding of AISI 430F and AISI 304 Stainless Steels

  Publication

  • K. Pańcikiewicz
  • A. Świerczyńska
  • P. Hućko
  • M. Tumidajewicz

  - Materials - Year 2020

  A dissimilar autogenous laser welded joint of AISI 430F (X12CrMoS17) martensitic stainless steel and AISI 304 (X5CrNi18-10) austenitic stainless steel was manufactured. The welded joint was examined by non-destructive visual testing and destructive testing by macro- and microscopic examination and hardness measurements. With reference to the ISO 13919-1 standard the welded joint was characterized by C level, due to the gas pores...

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• Welding Distortion Characteristics of Door Openings According to Changing Shape of Stiffener

  Publication

  • D. Lee
  • J. Seo
  • M. Yi
  • C. Hyun

  - Journal of Ocean Engineering and Technology - Year 2019

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• The influence of the welding thermal cycles on corrosion resistance of duplex stainless steel

  Publication

  • J. Łabanowski
  • K. Krzysztofowicz

  - Year 2005

  Badano skłonnośc strefy wpływu ciepła spoin ze stali dupleks do korozyjnego pękania narężeniowego. Wykonano próby korozyjne z wykorzystaniem metody SSRT w środowisku korozyjnym wrzącego MgCl2. Wykazano, że duży udział ferrytu w strukturze SWC pogarsza odpornośc na korozję. Badania metalograficzne na mikroskopie lektronowym wykazały różne sposoby propagacji pęknięcia zależnie od zawartości austenitu w strukturze SWC.

• Experimental study of the use of electric car powered with stationary solar and electrochemical batteries in Northern Poland

  Publication

  • D. Karkosiński
  • M. Pacholczyk
  • Ł. Sienkiewicz

  - Year 2018

  The subject of this paper is an experimental analysis of a Nissan LEAF electric car equipped with 24 kWh battery, powered from the standalone photo-voltaic (PV) charging station in Gdańsk, Poland. The calculations of charging process efficiency and range of test drives were conducted in two extreme situations (winter and summer) of sunlight and road conditions. Experiments were performed in the Laboratory of Innovative Power Technologies...

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• Impact Assessment of Electric Vehicles Integration and Optimal Charging Schemes Under Uncertainty: A Case Study of Qatar

  Publication

  • S. Deshmukh
  • H. Tariq
  • M. Amir
  • A. Iqbal
  • M. Marzband
  • A. M. A. B. Al-Wahedi

  - IEEE Access - Year 2024

  The integration of electric vehicles (EVs) is rapidly growing compared to conventional vehicles in Qatar. To assess how these electric vehicles will impact Qatar’s distribution network, it is necessary to accurately model EV loads. However, EV loads exhibit uncertainties due to driving behaviour in charging time, state of charge (SOC), number of trips, and distance travelled. This necessitates the development of a probabilistic...

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• An electric ring thruster as auxiliary manoeuvring propulsion system for watercraft - construction analysis

  Publication

  • L. Matuszewski
  • K. Falkowski

  - Polish Maritime Research - Year 2007

  The reported project aimed at examining properties and purposefulness of use of modern electromagneticbearings for a screw propeller in a prototype version of a synchronous ring motor with rare earths magnets.Bearings of this type generate electromagnetic forces which keep the rotor in a state of levitation. Therotating machine with magnetic bearings can work in any environment which reveals diamagnetic properties(air, vacuum,...

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• Microscopic calculation of the static electric susceptibility of polyethylene

  Publication

  • A. Eilmes
  • R. Munn
  • V. Mavrantzas
  • D. Theodorou
  • A. Góra

  - JOURNAL OF CHEMICAL PHYSICS - Year 2003

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• Electric motor drive with inverter output filter

  Publication

  • J. Guziński
  • H. Abu-Rub
  • A. Zobaa

  - Year 2011

  Przedstawiono zagadnienie sterowania i estymacji w układzie napędowym z silnikiem indukcyjnym i filtrem sinusoidalnym.Filtr użyty jest do wygładzenia prądu i napięcia silnika. Filtr wprowadza spadek napięcia i przesunięcie fazowe prądów i napięć uniemożliwiające stosowane bezczujnikowych metod sterowania wektorowego. Rozwiązaniem jest uwzględnienie filtru w sterowaniu i estymacji. Artykuł pokazuje takie rozwiązanie dla metody sterowania...

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• Possibility of Fault Detection in Sensorless Electric Drives

  Publication

  • J. Guziński
  • P. Kołodziejek
  • P. Strankowski

  - Automatyka Elektryka Zakłócenia - Year 2019

  The work presents a fault detection method for an induction motor drive system with inverter output filter. This approach make use of a load torque state observer, which complete structure is presented along with the used control structure. Moreover, the demonstrated drive system operates without rotor speed measurement in conjunction with the multiscalar control. The verification of the demonstrated idea was performed on an experimental...

• Badania połączeń spawanych rurociągu wody pitnej we Włocławku, ang. Welding joints tests in drinking water pipeline.

  Publication

  • W. Kiełczyński
  • M. Głowacka
  • L. Nadolny
  • M. Siejka

  - Year 2022

  Celem badań opisanych w pracy było określenie przyczyn korozji powstałej w strefie wpływu ciepła (SWC) w obwodowych połączeniach spawanych w rurociągu wody pitnej. Materiałem, z którego wykonano rurociąg to stal 304/304L. W obszarze złącza spawanego stwierdzono wżery inicjowane od niezgodności geometrycznych, gdzie mogły gromadzić się osady zwiększające udział chlorków bezpośrednio przy powierzchni rury, promujące tym procesy korozyjne....

• Comparative Analysis of Salient and Non-Salient Pole Brushless Synchronous Generator for Application in Autonomous Electric Power System

  Publication

  • F. Kutt
  • M. Michna
  • G. A. Kostro
  • M. Ronkowski

  - Year 2013

  This paper presents a comparative study of two types of brushless synchronous generator for application in autonomous electric power systems (e.g. airplane power grid). Commercially used salient pole and a prototype non-salient pole high speed multi-pole brushless synchronous generator (BSG) have been presented. Comparative analysis of both types of the generator has been performed. Chosen simulation (using FEM and circuit models)...

• Potential reduction of traffic noise by the means of increased fleet of electric vehicles using a combination of low-noise tyres and low-noise road surfaces

  Publication

  • B. Truls
  • P. Mioduszewski

  - Year 2016

  In the future, the number of zero-emission vehicles like electric and plug-in hybrid vehicles (in electric mode) is expected to be a substantial part of the vehicle fleet. In Norway, such vehicles already account for approximately 20 % of all new cars sold. Since these vehicles emit negligible noise related to the power-train, the tyre/road noise is the dominating noise source. In the LEO project, tyres designed for such cars have...

• Magnetic-field-induced electric quadrupole moments for relativistic hydrogenlike atoms: Application of the Sturmian expansion of the generalized Dirac-Coulomb Green function

  Publication

  • P. Stefańska-Ptaszek

  - PHYSICAL REVIEW A - Year 2016

  We consider a Dirac one-electron atom placed in a weak, static, uniform magnetic field. We show that, to the first order in the strength of the external field, the only electric multipole moments, which are induced by the perturbation in the atom, are those of an even order. Using the Sturmian expansion of the generalized Dirac-Coulomb Green function we derive a closed-form expression for the electric quadrupole moment induced...

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• Modelling of the High Speed Multi-Pole Synchronous Generator for Application in More Electric Aircraft Power Systems

  Publication

  • M. Michna
  • F. Kutt
  • M. Ronkowski

  - Year 2015

  In this paper different models of the synchronous generator are presented. The simulation results compared with the measurements are shown. Certain physical phenomena are included in described models for the porpoise of adequate analysis of the more electric aircraft power system. For different modelling levels, such as functional level or behavioural level, different physical phenomena have been included. Simulation results for...

• Development of an Oxide Layer on Al 6061 Using Plasma Arc Electrolytic Oxidation in Silicate-Based Electrolyte

  Publication

  • P. Jadhav
  • A. Bongale
  • S. Kumar
  • D. Pimenov
  • K. Giasin
  • S. Wojciechowski

  - Materials - Year 2022

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• Possibilities of using interlayers during diffusion welding of Ti Gr2 and AISI 316L

  Publication

  • J. Moravec
  • I. Novakova
  • T. Kik

  - MATEC Web of Conferences - Year 2018

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• Modular power converter with superconducting magnetic energy storage for electric power distribution system — Analysis and simulation

  Publication

  • M. Parchomiuk
  • R. Strzelecki
  • K. Zymmer
  • A. Domino

  - Year 2017

  This paper describes selected issues concerning realization of energy storage system (ESS) designed to operate in power distribution system. This paper presents a modular approach of 300 kVA power converter operating with superconducting magnetic energy storage (SMES), which gives high dynamics together with high power and suitable capability for instantaneous energy storage. Analysis and simulation studies of selected power converter...

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• Mathematical Modelling of Drive System with an Elastic Coupling Based on Formal Analogy between the Transmission Shaft and the Electric Transmission Line

  Publication

  • A. Popenda
  • M. Lis
  • M. Nowak
  • K. Blecharz

  - ENERGIES - Year 2020

  In the paper, the kinematic structure of the transmission shaft between the driving motor and the working mechanism is studied. The analysis is based on electrical and mechanical similarities. The equivalent circuits, typical for electrical systems, are defined for the transmission shaft concerned. Modelling of the transmission shaft based on a formal analogy between the transmission shaft and the electric transmission line is...

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• Influence of vision measurement system spatial configuration on measurement uncertainty, based on the example of electric traction application

  Publication

  • J. Skibicki
  • S. Judek

  - MEASUREMENT - Year 2018

  Technical diagnostics plays a significant role in ensuring operational reliability of electrified rail transport. The most critical point in the transmission of electric energy to vehicles is the sliding contact of the current collector with the traction network. For this reason, work is currently being carried on new measuring methods, whose appliance allows for more complete diagnostics of the contact line and current collectors,...

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• State observers for diagnostic applications in modern electric traction

  Publication

  • J. Guziński
  • Z. Krzemiński
  • A. Lewicki
  • H. Abu-Rub

  - Year 2009

  W rozdziale 7 monografii przedstawiono zagadnienie diagnostyki czujnika prędkości silnika i przekładni mechanicznej pociągu. Przedstawiono zagadnienia związane z diagnostyką czujnika prędkosci obrotowej silnika oraz układu transmisjii momentu trakcyjnego. Do diagnostyki wykorzystano analizę sygnałów prędkości obrotowej i momentu obciążenia silnika obliczanych przez układy obserwatorów stanu. Analiza chwilowych wartości obliczonej...

• Structure and electric properties of double magnesium zirconium orthophosphate

  Publication

  • M. Wanarska
  • S. Molin
  • K. Gdula-Kasica
  • G. Jasiński
  • B. Kusz
  • P. Jasiński
  • M. Gazda

  - Year 2010

  Publikacja przedstawia wyniki pomiarów elektrycznych i strukturalnych ortofosforanu magnezowo-cyrkonowego.

• Napęd elektryczny w motoryzacji = The electric drive in motorization

  Publication

  • A. Łebkowski
  • J. Guziński
  • Z. Kopeć

  - Year 2008

  Wyczerpujące się zasoby ropy naftowej sprzyjają rozwojowi spekulacji cen paliw na giełdach światowych. Jednocześnie postępujący efekt cieplarniany zmusza inżynierów do poszukiwania nośników energii oraz napędów, które mógłby być alternatywnym rozwiązaniem zaistniałej sytuacji ekonomicznej oraz ekologicznej. Użycie silników elektrycznych do napędu pojazdów samochodowych jest pewną alternatywą rozwiązującą problem wysokich cen paliw...

• Electric field dependence of the probability of charge carriers recombination

  Publication

  • M. Franz
  • J. Godlewski

  - MOLECULAR CRYSTALS AND LIQUID CRYSTALS - Year 2008

  Badano wpływ zewnętrznego pola elektrycznego na prawdopodobieństwo rekombinacji nośników ładunku w molekularnych ciałach stałych. Przybliżenie analityczne wykazuje, że prawdopodobieństwo to maleje ze wzrostem pola elektrycznego. Otrzymane wyniki mogą być pomocne w wyjaśnieniu spadku wydajności elektroluminescencji w jednowarstwowych diodach elektroluminescencyjnych w zakresie wysokich pól elektrycznych.

• Recent Results from Studies of Electric Discharges in the Mesosphere

  Publication

  • T. Neubert
  • M. Rycroft
  • T. Farges
  • E. Blanc
  • O. Chanrion
  • E. Arnone
  • A. Odzimek
  • N. Arnold
  • C. Enell
  • E. Turunen... and 16 others

  - SURVEYS IN GEOPHYSICS - Year 2008

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• Preliminary analysis of diesel electric ships propulsion solution

  Publication

  • N. Jelińska-Żurek

  - Year 2007

  Artykuł zawiera opis wytwarzania i transmisji mocy układów disel-elektrycznych. Referat zwraca uwagę na problemy dotyczące zastosowania tych układów na statkach oraz pokazuje rozwój napędów disel-elektrycznych w ostatnim czasie.

• Electric chips for rapid detection and quantification of nucleic acids

  Publication

  • M. Gabig-Ciminska
  • A. Holmgren
  • H. Andresen
  • K. Bundvig
  • M. Wümpelmann
  • J. Albers
  • R. Hintsche
  • A. Breitenstein
  • P. Neubauer
  • M. Los... and 6 others

  - BIOSENSORS & BIOELECTRONICS - Year 2004

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