Influence of Electric Loading Conditions on the Vibrations of Piezoceramic Resonators

Abstract

Experimental data for the fundamental radial mode of a thin piezoceramic disk are analyzed. It is established that the voltage drops and instantaneous powers are very sensitive to the loading conditions, while admittances, impedances, and phase shifts do not depend on them. If the current is set constant, the instantaneous power decreases as the resonance is approached and increases as the antiresonance is approached. If the voltage is set constant, the instantaneous power increases as the resonance is approached and decreases as the antiresonance is approached