Biomimetic blue-dot ray underwater thruster

Abstract

A biomimetic blue-dot ray underwater thruster includes a pair of pectoral fin systems, a main body and a tail system, wherein the pectoral fin system includes a plurality of swing structures, an electric motor, an eccentric wheel shaft and a rotating main shaft, wherein the swing structure comprises a U-shaped frame and a fin strip. The fin strip is fixedly connected with the U-shaped frame, eccentric wheels are arranged in the U-shaped frame, each eccentric wheel is fixed on the eccentric wheel shaft, the U-shaped frame is further provided with a rotating main shaft hole, and the U-shaped frame can rotate around the rotating main shaft. The front part of the main body is connected with a head structure, the front side of the head structure is provided with two biomimetic grooves, and a sensor is installed at the groove position. According to the idea of functional bionics, the invention develops a bionic effect which has the movement characteristics similar to a bionic object so as torealize the true bionic effect. At the same time, based on this structure, the observation function is realized.

Description

Technical field [0001] The invention relates to the field of underwater vehicles, in particular to a vehicle with a bionic structure. Background technique [0002] With the continuous development of human civilization, the terrestrial resources on the earth are increasingly depleted. Therefore, mankind began to look to the ocean. The development and utilization of the ocean by humans has gradually become a hot spot in current scientific research. Underwater propellers adapted to the marine environment are necessary tools for humans to develop and explore marine resources. At present, most underwater propellers use propeller propulsion systems [0003] Underwater propellers that use propellers as the propulsion system have disadvantages such as low efficiency, high propulsion noise, large wake vortices that affect the surrounding ecological environment, poor maneuverability, large system size, severe transient response lag, and difficulty in ensuring reliability. Therefore, the u...

AI Technical Summary

Problems solved by technology

However, due to the complex interaction of water in the fluctuating process of fluctuating fins, there is still no theory that can describe the fluctuating model very accurately.

Most of the existing fish propulsion theories are based on the assumptions of potential flow, linear boundary conditions, and fixed wake shape, which cannot analyze the nonlinear interaction between the fluid and the fish body, nor can it solve the problem of dynamic changes in the wake, and cannot accurately describe the real fish. However, the calculation results can only guide the design of bionic robotic fish qualitatively.

However, at present, the research and development of the aircraft prototype based on undulating fins and the simple closed-loop control motion such as multi-modal motion control and depth-fixed orientation of the aircraft in the water are not yet mature. There is still a very obvious gap between the

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