Multi-piezoelectric-ceramic-stack excitation deepwater broadband energy converter

Abstract

The invention relates to a multi-piezoelectric-ceramic-stack excitation deepwater broadband energy converter. The multi-piezoelectric-ceramic-stack excitation deepwater broadband energy converter comprises multiple piezoelectric ceramic stacks, a lower tubular end cap, pre-stress screw rod and an upper tubular end cap, wherein any one piezoelectric ceramic stack is installed between the lower tubular end cap and the upper tubular end cap through the pre-stress screw rod, and the multiple piezoelectric ceramic stacks are connected in parallel; and an interval is reserved between the top end of the lower tubular end cap and the bottom end of the upper tubular end cap. According to the invention, by use of multi-modal vibration of the piezoelectric stacks, an upper end plate and a lower end plate, large-broadband emission of the energy converter is realized, by use of the 33 work mode of the multiple piezoelectric stacks, the problems of quite large emission and reduced response which are brought by the anti-phase problem due to radial vibration of a circular pipe structure are reduced, and large-power emission is obtained.

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...

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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

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