Ocean internal wave absorbing method based on active control vibration wing plate

Abstract

The invention relates to an ocean internal wave absorbing method based on an active control vibration wing plate. The ocean internal wave absorbing method comprises the following steps: firstly, measuring pressure of internal waves acting on an underwater vehicle in horizontal and vertical directions, depth and density stratification of upper and lower layers at the current position of the underwater vehicle, and sound field parameters of the internal waves through a measuring system module; then solving a wave equation, obtaining the amplitude, the wave surface shape and the horizontal flow velocity of the internal solitary wave through an oscillogram, and transmitting data to a data processing module; and the information is transmitted to a control center. The active vibration wing plate module adjusts the amplitude, frequency, phase and other parameters of vibration according to an electric signal instruction transmitted by the control center, so that the amplitude, frequency, phase and other parameters are opposite to external internal waves in direction but are the same as the external internal waves in amplitude and flow velocity. The ocean internal solitary wave detection and elimination functions are integrated, internal waves in different sea areas can be detected and recorded, and internal solitary waves threatening an underwater vehicle can be eliminated.

Description

technical field [0001] The invention belongs to the field of ocean engineering, and relates to an ocean internal wave elimination method based on active control of vibrating wings, in particular to a method for using active control of vibrating wings to weaken the influence of internal solitary waves on marine vehicles. Background technique [0002] Internal ocean waves are fluctuations that occur in the densocline of ocean water and can be triggered by any small disturbance. It has a wide range of wave heights, large flow rates, and a wide range of wavelengths, and can travel hundreds of kilometers without changing the waveform. For aircraft installed in the ocean, these unique properties of internal waves have extremely adverse effects on the safety and overall effectiveness of their work. [0003] As a special nonlinear ocean internal wave, the internal solitary wave (ISW) has large amplitude, short period and high energy, which seriously affects the safety and seakeepin...

AI Technical Summary

Problems solved by technology

In areas where internal solitary waves are more active, the aircraft suspended above the jump will move up and down with the waves. When the distance from the sea surface is small, internal solitary waves are likely to throw it out of the water, which will seriously affect the work. The stability of task execution; when an underwater vehicle navigating under the jump suddenly encounters a strong nonlinear internal solitary wave, its buoyancy will change suddenly, the vertical force will increase sharply, and then it will suddenly drop sharply in a short period of time. Heavy, this will cause damage to the hull of the aircraft or its subsidiary structures, or cause damage to the aircraft

Images