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    Wyświetlanie 1-5 z 5
    Tytuł:
    Modelling and Designing of Ultrasonic Welding Systems
    Autorzy:
    Milewski, A.
    Kluk, P.
    Kardyś, W.
    Kogut, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/176732.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ultrasonic welding and cutting system
    ultrasonic stack modelling and designing
    digitally controlled ultrasonic power supply
    ultrasonic stack e-diagnosis
    Opis:
    This article presents the main stages and challenges in modelling and designing of modern ultrasonic welding and cutting systems. First, the key components of such a system, such as an ultrasonic stack (consisting of a high power ultrasonic transducer and a sonotrode) and a digitally controlled ultrasonic power supply with precise control of the output power, have been considered. Next, a concept of measurement system for verification and validation of mathematical models of ultrasonic stacks and its components has been presented. Finally, a method of ultrasonic stack e-diagnosis based on ultrasonic transducer electrical impedance measurement during welding and cutting process has been described.
    Źródło:
    Archives of Acoustics; 2015, 40, 1; 93-99
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Universal Ultrasonic Generator for Welding
    Autorzy:
    Kardyś, W.
    Milewski, A.
    Kogut, P.
    Kluk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399360.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.20.Vj
    43.35.-c
    43.35.+d
    77.65.Dq
    77.84.Cg
    85.50.-n
    Opis:
    The paper presents design and parameters of a multifunction ultrasonic generator manufactured by Tele and Radio Research Institute. Efficient usage of ultrasonic welding and cutting technology depends on the ability to precisely control process parameters and tune those parameters to suit particular needs. Ultrasonic generator is responsible for such control and tuning. Presented design incorporates powerful 32 bit Cortex M4 microcontroller with floating point unit which allows using modern signal processing methods to calculate parameters of ultrasonic stack in real time. Calculated parameters, especially impedance of the stack are used to estimate load level and identify phases of the welding process such as melting of the welded material. Precise control of the output signal is possible due to innovative design of the direct digital signal synthesis unit implemented in programmable logic device (CPLD). Resonant inverter topology of the generator front end ensures high electrical efficiency of the device. Designed generator is equipped with various communication interfaces such as USB host and slave, Ethernet, Bluetooth, CAN and RS485. Multiple digital inputs and outputs together with load cell interface, 4-20 mA receiver and 0-10 V analog input enable the generator to monitor and control entire ultrasonic welding system without the need of a PLC unit.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 456-458
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement System for Parameter Estimation and Diagnostic of Ultrasonic Transducers
    Autorzy:
    Kluk, P.
    Milewski, A.
    Kardyś, W.
    Kogut, P.
    Michalski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399367.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.35.-c
    43.35.+d
    43.38.+n
    43.38.-p
    84.37.+q
    07.10.-h
    46.40.-f
    07.20.Dt
    Opis:
    The paper presents an architecture and design of measurement system and methods for parameter estimation and diagnostic of ultrasonic transducers used in ultrasonic welding and cutting systems manufactured by Tele and Radio Research Institute. The key element of the ultrasonic welding and cutting system is a high power ultrasonic transducer implemented as a sandwich transducer consisting of a stack of piezoelectric ceramic rings mounted between two masses. High quality welding and cutting demand predetermined frequency characteristic of transducer impedance. Also important are: high energy efficiency, high coupling coefficient, low dielectric loss, and the optimal radiation pattern. In order to manufacture high quality and long-life transducers the piezoelectric rings must be selected and the sandwich transducers diagnosed on the basis of their measured parameters. Presented measurement system takes advantage of the virtual instrument technique in the NI LabVIEW environment. It uses Agilent U2761A Function Generator, U2531A Data Acquisition Unit, and the linear amplifier to measure impedance frequency characteristic in the frequency range of 10 kHz to 100 kHz. Moreover, the system can measure the vibration amplitude in the range of 1 μm up to 100 μm, using an optical sensor, and the temperature of the transducer using a pyrometer sensor.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 468-470
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New Multimode Sonotrodes Models Designed for Rotary Ultrasonic Welding Systems
    Autorzy:
    Kogut, P.
    Milewski, A.
    Kardyś, W.
    Kluk, P.
    Gawryś, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399374.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    43.40.-r
    43.40.+s
    43.35.+d
    43.38.+n
    43.38.-p
    46.40.-f
    Opis:
    The paper presents methods of designing sonotrodes, working in varied mechanical vibration modes in high power application regime such as rotary ultrasonic welding systems. The aim of the sonotrode design process is to optimize its shape to achieve the best energy efficiency for a given welding process. Sonotrode geometry influences the power transferred to the welded element because it determines the vibration amplitude distribution in the sonotrode. The most popular applications use sonotrodes designed for axial vibration. Conducted research have shown that the optimal displacement and strain distribution is achieved for sonotrodes working in various vibration modes such as axial, transverse, radial or their compositions. In the paper examples of multimode sonotrode models for various rotary ultrasonic welding technologies have been presented.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 474-478
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new type of high power ultrasonic generator for welding and cutting processes
    Autorzy:
    Kardyś, W.
    Milewski, A.
    Kogut, P.
    Kluk, P.
    Kiełbasiński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/332326.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Akustyczne
    Tematy:
    ultrasonic
    ultrasonic welding
    ultrasonic cutting
    ultrasonic generator
    Opis:
    The paper presents a new type of high power ultrasonic generator for welding and cutting processes developed by the Tele & Radio Research Institute. The new generator can provide up to 5 kW of electrical power to an ultrasonic transducer in the frequency range of 16 kHz up to 60 kHz with regulation step down to 0.1 Hz. The device utilizes an innovative microcontroller with built-in high resolution timing blocks that enable direct synthesis of control signals for the generator's resonant converter, without the need of an external DDS unit or programmable device. This new approach to designing ultrasonic generators can benefit in greater flexibility and reliability of the device. New algorithms with cycle-by-cycle parameter control, and precise regulation of output frequency and power delivery, have been developed. Various parameters of ultrasonic stack, such as impedance and resonant frequency, are measured by the generator in real-time, and can be used for ultrasonic stack wear monitoring and fault detection.
    Źródło:
    Hydroacoustics; 2016, 19; 209-218
    1642-1817
    Pojawia się w:
    Hydroacoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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