Temat: contactless control - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Resonant Converter Based Contactless Power Supply for Robots and Manipulators
Autorzy:: Moradewicz, A.
Kaźmierkowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/384265.pdf
Data publikacji:: 2008
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: contactless energy transmission
series resonant converters
FPGA control
Opis:: This paper presents an inductive Contactless Power Supply (CPS) system for robots and manipulators. The energy is transmitted using rotatable transformer with adjustable air gap and power converter. To minimize total losses of the system a series resonant circuit is used. It ensures zero current switching (ZVS) condition for MOSFET power transistors. The controller and protection are implemented in FPGA system. The resonant frequency is adjusted by extreme regulator, which follows instantaneous value of primary peak current. Some simulated and experimental results, which illustrate operation of developed 3 kW laboratory model, are presented.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2008, 2, 3; 20-25
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Contactless power interface for plug-in electric vehicles in V2G systems
Autorzy:: Miśkiewicz, R.
Moradewicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/200061.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: bi-directional contactless energy transfer (CET)
contactless power supply
smart grids
series resonant converter
FPGA based control
Opis:: In the paper a bi-directional power electronic interface based on an inductive coupled contactless energy transfer system for plug-in vehicles with Vehicle-to-Grid (V2G) capability is presented. To minimize the total losses of the system, a series resonant compensation circuit is applied assuring Near to Zero-Current Switching (N2ZCS) condition for insulated-gate bipolar transistors. The analytical expression of the dc voltage and current gains as well as energy transfer efficiency is given and discussed. The system uses modified FPGA based integral control method adjusting resonant frequency and guarantees very fast and stable operation. Simulation and experimental results illustrating properties of the developed 40-60kHz switching frequency operated 15kW laboratory prototype are presented.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 561-568
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Contactless ultrasonic method for determining knitted fabrics tension
Autorzy:: Zashchepkina, N. M.
Zdorenko, V. G.
Markin, M. O.
Barilko, S. V.
Shipko, D. O.
Powiązania:: https://bibliotekanauki.pl/articles/2172163.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: tension of textile fabric
amplitude of ultrasonic waves
contactless control
through pores of the material
interfibre porosity
naprężenia
tkanina tekstylna
amplituda
fale ultradźwiękowe
sterowanie
matariał porowaty
porowatość włókna
Opis:: Purpose The values of the measured amplitudes of ultrasonic vibrations that have passed the controlled material have been obtained. These values were compared with the amplitude of the waves passing through the fabric sample when the initial tension was applied to it. After that, the total current value of the tension of each sample of the knitted fabric in its three zones was determined. The distribution of the total tension in different zones of the sample material was also determined. Design/methodology/approach It has been established that the amplitude of ultrasonic waves passing through different zones of the textile material can be used to determine the tension of the knitted fabric over the entire width of its fabric. Findings The possibility and expediency of determining the fabric tension on knitting equipment by using the ultrasonic contactless method has been shown. The tension of the knitted fabric in its manufacture is the main technological parameter, the value of which determines the physical, mechanical and consumer properties of the finished fabric, especially basis weight. The use of operational technological control of the tension of knitted fabrics directly during their production will improve the quality of finished products, and, accordingly, the reliability of use in personal protective equipment, in particular in body armour. It has been proposed to determine the tension of knitted fabrics in their production on knitting equipment by changing the amplitude of ultrasonic waves passing through the material under the action of tension, which also changes during the movement of the process equipment. The proposed contactless method is quite promising, since it has a number of significant advantages over the existing contact methods. In the course of the research, experimental measurements of the amplitude of ultrasonic waves have been carried out. These waves passed through samples of fabric of various materials while stretching. The samples of knitted fabrics were irradiated with an ultrasonic pulse signal with a wave frequency of 40 kHz. The samples of knitted fabrics from 58x2 Tex Kevlar threads and high molecular weight 44x3 Tex polyethylene yarns with double weave 1x1 elastic have been taken as a basis for the research. Research limitations/implications For textile fabrics, the structure of which does not allow stretching through pores under the action of tension, it is necessary to additionally adjust the contactless sensors in frequency and capacity depending on the corresponding sample. Practical implications The values of the measured amplitudes of ultrasonic vibrations that have passed the controlled material have been obtained. These values were compared with the amplitude of the waves passing through the fabric sample when the initial tension was applied to it. After that, the total current value of the tension of each sample of the knitted fabric in its three zones was determined. The distribution of the total tension in different zones of the sample material was also determined. Originality/value The dependences of the amplitude of ultrasonic waves, transmitted through the textile material in its different zones, on the value of the total tension, and on the value of the distribution of the tension of the fabric over its entire width were obtained. The deviations δP of the tension display between the determination of this parameter by the standard and ultrasonic methods are shown. The deviations δU between the amplitudes of waves passing through different zones of the controlled fabric are also determined.
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2022, 112, 1; 13--24
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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