Piezoelectric-driven swing fin and working mode thereof

Abstract

The invention discloses a piezoelectric-driven swing fin and a working mode thereof. An unmanned underwater vehicle comprises a support guide rail, a piezoelectric actuator, an elastic thin plate, a first connecting rod, a second connecting rod and a swing fin body. According to the invention, the elastic connecting thin plate is utilized, the piezoelectric actuator is matched with the working track, and the piezoelectric actuator is in inclined contact with the guide rail under the bending pressure action of the elastic thin plate, so that the swinging fin can be driven to automatically swing back and forth and automatically reverse on the working track. The piezoelectric excitation and friction driving structure is simple, adapts to high water pressure, is high in maneuverability, is low in cost, can be opened to seawater, does not need to be sealed strictly, relieves the restriction of deep sea high water pressure on a driving system, and is a key technical basis for the unmanned underwater vehicle to execute large-range and large-depth cruise and realize effective control of a sea area.

Description

technical field [0001] The invention relates to the fields of underwater propellers and piezoelectric drives, in particular to a piezoelectric-driven swing fin and its working mode. Background technique [0002] To build a maritime power, we must pay more attention to the ocean, understand the ocean, manage the ocean, and accelerate the pace of innovation in marine science and technology. "Understanding the ocean" is the foundation of "understanding the ocean". Unmanned underwater vehicles play an irreplaceable role in "expanding the far sea and exploring the deep sea", which will have a profound impact on future ocean competition and confrontation. [0003] The existing flexible bionic functional materials with integrated structure and function have low power density and are difficult to support the effective load; the driving method of the existing propulsion system is sensitive to water pressure, and the transmission efficiency of the motor decreases greatly with the incr...

AI Technical Summary

Problems solved by technology

[0003]The existing structure-function integrated flexible bionic functional materials have low power density and are difficult to support the effective load; the driving method of the existing propulsion system is sensitive to water pressure, and the motor transmission efficiency varies with The increase of the diving depth drops sharply until it fails, which makes it difficult to realize large depth detection; the existing unmanned submersibles are equipped with various sensors, and the capabilities of observation, communication, and interaction have been greatly improved, making large diving depth and long-endurance propulsion a reality. short board

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