Influence of the Character of Electric Excitation on the Parameters of Transient Processes in Piezoelectric Transducers with Plate Elements

摘要

A pulsed operating mode of a piezoelectric plate placed into a liquid is considered. The problem is solved for the application of exciting electric pulses with a duration that is a multiple of the duration of a sinusoid half-period at the natural frequency of a piezoelectric plate. For different degrees of plate damping, the dynamics of changes in the shape of an acoustic pulse are studied as a function of an electrically excited pulse duration. The durations and amplitudes of acoustic signals are evaluated. The problem is solved by the calculation–theoretical method via application of both the apparatus of schemes–analogues of piezoelectric transducers and the spectral method based on a Fou-rier transform.