Bazhenov A., Didenkulov I., Korneichuk V., Yarovikov V.

Problems of calculation and design of piezoelectric vibrator for new methods of medical diagnostics based on excitation of vibrations of human body, joints, muscles and ligaments are considered in this paper. A mathematical model of a vibrator is presented. The model allows one to design a vibrator piezotransducer both of resonance and wide-band types and to calculate vibrator characteristics. Results of calculations of the electroacoustic coefficient and optimal design parameters of a vibrator for the quasistatic load up to 2000 N in the wide frequency band (from few Hz to tens kHz) are presented. Our calculations confirm the principal possibility of creation of medical vibrators for the new methods of vibroacoustic diagnostics.