引信新型超声压电换能器及其基阵设计

ccording to the equivalent circuit of the piezoelectric transducer, its response driving by the pulse signal was studied, and the optimum duty ratio of the actuating signal is 50%. In order to improve the shock resistance and long-term storage ability, the P-51 piezoelectric ceramic material and epoxy insulation board were used to make piezoelectric transducers. The structure of the transducer array, which was assembled with 6 transducers, was optimized, and a new transmit-receive switching circuit was designed. The admittance measuring apparatus of piezoelectric transducer was made, and the transducers' admittance attributes were measured by using the self-made apparatus and the available instruments in the laboratory, such as digitized signal generator and computer.