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Wyszukujesz frazę "energy harvesting" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Experimental investigation on the piezoelectric energy harvester as a self-powered vibration sensor
    Autorzy:
    Grzybek, D.
    Micek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/949300.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    piezoelectric energy harvesting
    piezoelectric composite
    wireless sensor
    vibration
    Opis:
    The article presents an experimental study of a system consisting of a piezoelectric energy harvesting device, Graetz bridge rectifier, capacitor, voltage comparator and radio transmitter. In the presented experimental study, the recovered electrical energy is accumulated in the capacitor and is used to send signals by a radio transmitter. In the first part, the application of piezoelectric energy harvesting devices based on the cantilever beam in wireless monitoring systems is discussed. In the second part, the mathematical model of energy conversion in the piezoelectric energy harvesting devices is presented. In the third part, the characteristics obtained during laboratory research are presented.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 687-699
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal Design of Piezoelectric Actuators for Shunt Damping Techniques
    Autorzy:
    Neubauer, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/176597.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    piezoelectric transducer
    piezoelectric shunt damping
    piezoelectric energy harvesting
    vibration damping
    Opis:
    In vibration control with piezoceramics, a high coupling of the piezoelement with the structure is desired. A high coupling improves the damping performance of passive techniques like shunt damping. The coupling can be influenced by a the material properties of the piezoceramics, but also by the placement within the structure and the size of the transducer. Detailed knowlegde about the vibration behavior of the structure is required for this. This paper presents an in-depth analysis of the optimal shape of piezoelectric elements. General results for one-dimensional, but inhomogeneos strain distribution are provided. These results are applied to the case of a longitudinal transducer and a bending bimorph. It is obtained that for maximum coupling, only a certain fracture of the volume should be made of piezoelectric material. . .
    Źródło:
    Archives of Acoustics; 2014, 39, 4; 615-622
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation to the influence of additional magnets positions on four-magnet bi-stable piezoelectric energy harvester
    Autorzy:
    Li, Xinxin
    Huang, Kexue
    Li, Zhilin
    Xiang, Jiangshu
    Huang, Zhenfeng
    Mao, Hanling
    Cao, Yadong
    Powiązania:
    https://bibliotekanauki.pl/articles/2173633.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bistable
    piezoelectric energy harvesting
    nonlinear dynamic
    potential energy
    układ bistabilny
    dynamika nieliniowa
    energia potencjalna
    zbieranie energii piezoelektrycznej
    Opis:
    To enhance the harvesting performance of a bi-stable piezoelectric energy harvester (BEH), this work proposes a four-magnet BEH (FBEH). FBEH consists of a piezoelectric cantilever beam with a tip magnet, a fixed magnet and two movable magnets. The two movable magnets relative to the fixed magnet can move in both horizontal and vertical directions. A nonlinear distributed parameter model of FBEH is derived through the Hamilton principle. The effects of the excitation frequency and amplitude as well as the horizontal and vertical gap on the harvesting performance are mainly investigated by using the bifurcation diagram, phase diagram, Poincaré map and output power. Numerical simulations demonstrate that the proposed FBEH decreases the potential barrier and creates a higher than typical bi-stable one when subjected to lower excitation amplitudes and frequencies.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 1; art. no. e140151
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Co-design of a low-power RF receiver and piezoelectric energy harvesting power supply for a Wireless Sensor Node
    Autorzy:
    Mancelos, N
    Correia, J
    Oliveira, J. P.
    Oliveira, L. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/398018.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    CMOS RF analog front-end
    low-voltage wideband balun LNA
    passive mixer
    piezoelectric energy harvesting
    active full bridge rectifier
    LDO regulator
    układ analogowy CMOS
    balun szerokopasmowy
    mikser pasywny
    energia piezoelektryczna
    prostownik aktywny
    prostownik mostkowy
    regulator LDO
    Opis:
    A low-voltage RF CMOS receiver front-end and an energy harvesting power circuit for a piezoelectric source are presented as a co-designed solution for a Wireless Sensor Node. A MOSFET-only Wideband balun LNA with noise cancelling and a 0.6 V supply voltage is designed in conjunction with a passive mixer. The passive mixer operates in current mode, allowing a minimal introduction of voltage noise and a good linearity. The receiver front-end reaches a total voltage conversion gain of 31 dB, a 0.1-5.2 GHZ bandwidth, an IIP3 value of -1.35 dBm, and a noise figure inferior to 9 dB. The total power consumption is 1.95 mW. The energy harvesting power circuit consists of an active full bridge cross-coupled rectifier followed by a low-dropout (LDO) regulator, and it is able to guarantee a power output of 6 mW with a regulated output voltage of 0.6 V, for typical vibration patterns.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2014, 5, 4; 136-143
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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