DIGITAL METHOD OF MEASURING PARAMETERS OF PIEZOELECTRIC ELEMENTS Russian patent published in 2016 - IPC G01R27/02 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment. Peculiarity of claimed digital method of measuring parameters of piezoelectric elements is that drive signal has a pulse duration T₁ = T₀-τ, where τ is duration of pause between end of signal with linear frequency modulation and end of detection of digital signals, while reception of digital signals is T₀, determining resonance frequency ƒ_r, antiresonance frequency ƒ_a and Q of piezoelectric element, and value of parallel capacitance C₀ from received plurality of complex conductivity values by its fractional rational approximation frequency dependence of complex conductivity canonical equivalent circuit in resonant frequency interval.

EFFECT: high accuracy of measuring complex conductivity piezoelectric element.

2 cl, 10 dwg