A Multi-Piezoelectric Ceramic Stack Excited Deepwater Broadband Transducer

Abstract

The invention relates to a multi-piezoelectric ceramic stack to excite a deep-water broadband transducer, comprising a piezoelectric ceramic stack, a lower cylindrical end cover, a prestressed screw, and an upper cylindrical end cover; wherein, the piezoelectric ceramic stack has multiple , any piezoelectric ceramic stack is installed between the lower cylindrical end cap and the upper cylindrical end cap through a prestressed screw, and the plurality of piezoelectric ceramic stacks are connected in parallel; the lower cylindrical end cap There is a space between the uppermost end of and the lowermost end of the upper cylindrical end cap. The invention utilizes the multi-mode vibration of the piezoelectric stack and the upper and lower cover plates to realize the large broadband emission of the transducer, utilizes the 33 working modes of the multi-piezoelectric stack, and reduces the reverse phase due to the radial vibration of the circular tube structure Problems brought about by the larger launch response decrease the problem of obtaining high power launches.

Description

technical field [0001] The invention relates to the fields of underwater acoustic communication, detection, and ocean deep water research, in particular, the invention relates to a multi-piezoelectric ceramic stack excitation deep water broadband transducer. Background technique [0002] The 21st century is the century of the ocean. The underwater acoustic transducer is an important means of understanding the ocean, and it is widely used in the fields of underwater acoustic communication, detection, and deep-water ocean research. At present, major marine resource countries attach unprecedented importance to marine resources and marine territories, and deep-sea development technology has become a hot spot, which requires underwater acoustic transducers to be able to work in deep water conditions. This puts forward higher requirements on the performance of underwater acoustic transducers. [0003] The traditional deep-water broadband piezoelectric circular tube transducer ado...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the internal and external phase inversion of the underwater acoustic transducer in the prior art causes the emission response to be greatly reduced when it works in deep water, so as to provide a deep-water, wide-band transducer that can obtain a large emission voltage response. energy device

Images