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High-power piezoelectric characterization system (HiPoCS)

The bottleneck of the piezoelectric devices in miniaturization is the heat generation owing to the losses. There are three losses in a piezoelectric material; dielectric, elastic and piezoelectric losses. The development of high-power density piezoelectrics is directly relevant to the clarification of the loss mechanisms in such materials. This article describes the characterization methodologies of high-power piezoelectrics, in particular, in determining the three losses separately. There are two categories for the measuring methods: (1) electrical excitation method, and (2) mechanical excitation method. The former is basically admittance/impedance measurement via the output current over the input voltage, further classified into four methods; (a) constant voltage, (b) constant current, (c) constant vibration velocity, and (d) constant input energy. To the contrary, the latter is basically the transient mechanical vibration ring-down measurement under various electrical constraint conditions. The key is to obtain precise values of both mechanical quality factors at resonance QA and at antiresonance QB, regardless of measuring techniques, so that we can determine the piezoelectric loss precisely. The difference of QM between the resonance and antiresonance is originated from the electromechanical coupling factor k2 loss,(k2′′k2')=(2 tan θ'− tan δ'− tan ϕ'). Depending on the sign of the k2 loss, more efficient driving frequency can be derived rather than the conventional ‘resonance’ frequency.

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Work Title High-power piezoelectric characterization system (HiPoCS)
Access
Open Access
Creators
  1. Kenji Uchino
Keyword
  1. High-power piezoelectrics
  2. Loss mechanism
  3. Resonance/antiresonance
  4. Mechanical quality factor
  5. Admittance spectrum
  6. Burst mode
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Ferroelectrics
Publication Date December 22, 2020
Publisher Identifier (DOI)
  1. https://doi.org/10.1080/00150193.2020.1791664
Deposited February 17, 2023

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  • Created

    February 17, 2023 11:48 by Researcher Metadata Database

  • Added 20-High_power_piezoelectric_characterization_system_HiPoCS-Ferroelectrics-2020.pdf

    February 17, 2023 11:48 by Researcher Metadata Database

  • Added Creator Kenji Uchino

    February 17, 2023 11:48 by Researcher Metadata Database

  • Published

    February 17, 2023 11:48 by Researcher Metadata Database

  • Updated Work Title, Keyword, Publisher Identifier (DOI), and 1 more Show Changes

    May 27, 2023 13:49 by avs5190

    Work Title
    • Review: High-power piezoelectric characterization system (hipocs)
    • High-power piezoelectric characterization system (HiPoCS)
    Keyword
    • High-power piezoelectrics, Loss mechanism, Resonance/antiresonance, Mechanical quality factor, Admittance spectrum, Burst mode
    Publisher Identifier (DOI)
    • https://doi.org/10.1080/00150193.2020.1791664
    Publication Date
    • 2021-01-01
    • 2020-12-22
  • Updated Description Show Changes

    June 19, 2023 14:40 by avs5190

    Description
    • <p>With accelerating the commercialization of high-power density piezoelectric actuators and transducers, the main research focus seems to be gradually shifting from the ‘real parameters’ such as larger polarization and displacement, to the ‘imaginary parameters’ such as polarization/displacement hysteresis, heat generation, and mechanical quality factor, which are originated from three loss factors (dielectric, elastic and piezoelectric losses). Reducing hysteresis and heat generation and increasing the mechanical quality factor to amplify the resonance displacement are the primary target. This paper reviews High-Power Piezoelectric Characterization System (HiPoCS™), including three methodologies: (a) admittance spectrum, (b) burst mode, and (c) precise input energy measurement in these 35 years.</p>
    • The bottleneck of the piezoelectric devices in miniaturization is the heat generation owing to the losses. There are three losses in a piezoelectric material; dielectric, elastic and piezoelectric losses. The development of high-power density piezoelectrics is directly relevant to the clarification of the loss mechanisms in such materials. This article describes the characterization methodologies of high-power piezoelectrics, in particular, in determining the three losses separately. There are two categories for the measuring methods: (1) electrical excitation method, and (2) mechanical excitation method. The former is basically admittance/impedance measurement via the output current over the input voltage, further classified into four methods; (a) constant voltage, (b) constant current, (c) constant vibration velocity, and (d) constant input energy. To the contrary, the latter is basically the transient mechanical vibration ring-down measurement under various electrical constraint conditions. The key is to obtain precise values of both mechanical quality factors at resonance QA and at antiresonance QB, regardless of measuring techniques, so that we can determine the piezoelectric loss precisely. The difference of QM between the resonance and antiresonance is originated from the electromechanical coupling factor k2 loss,(k2′′k2')=(2 tan θ'− tan δ'− tan ϕ').
    • Depending on the sign of the k2 loss, more efficient driving frequency can be derived rather than the conventional ‘resonance’ frequency.
  • Updated

    April 04, 2024 10:22 by [unknown user]