A dual tail fin bionic robotic fish based on crank-slider structure

A crank-slider mechanism and robotic fish technology, which is applied to non-rotating propulsion elements and other directions, can solve problems such as the failure of bionic robotic fish to achieve performance indicators, and achieve the advantages of improving cruising efficiency and speed, eliminating lateral forces and improving stability. Effect

Active Publication Date: 2019-01-11
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there are still many problems to be solved in terms of theoretical analysis and experiments, and the performance indicators of the designed bionic robot fish are far from the level of real fish in nature.

Method used

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  • A dual tail fin bionic robotic fish based on crank-slider structure
  • A dual tail fin bionic robotic fish based on crank-slider structure
  • A dual tail fin bionic robotic fish based on crank-slider structure

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] figure 1 It is the 3D drawing of the general assembly of the bionic robot fish. It can be seen from the general assembly drawing that the bionic robotic fish consists of four parts: caudal fin 1, fish tail 2, fish body 3 and fish head 4. The innovation of the present invention lies in the unique crank-slider transmission mechanism at the tail, so we will focus on the 2 parts of the fishtail.

[0030] figure 2 It is the transmission structure diagram of the internal part of the fishtail. exist figure 2 It can be seen in the figure that the output shaft 5 of the motor is connected with the first crank 6 through the cooperation between the key grooves, and the key groove at the other end of the first crank 6 is matched with the first short shaft 7, and then the second crank 6 is connected in the same way. The first short shaft 7 and ...

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Abstract

The invention discloses a twin-skeg bionic robot fish based on crank-slider mechanisms. Swing of skegs of a traditional bionic robot fish under the straight cruising state can generate greater lateral force, and is obviously insufficient in forward propelling force, and aiming at the insufficiency, the twin-skeg bionic robot fish based on the crank-slider mechanisms is designed. According to the twin-skeg bionic robot fish, the symmetrical crank-slider mechanisms are skillfully designed at the tail part of a fish body, so that a single motor can continuously rotate at the constant speed to drive the twin skegs at the tail part to realize 180-degree symmetrical reciprocating swing, the lateral force generated by swing of the skegs can be effectively eliminated, the swing of the skegs can reach the higher frequency, and then the stability and the cruising speed of the bionic robot fish in water can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of underwater bionic robot fish, in particular to a bionic robot fish with double tail fins based on a crank slider structure. Background technique [0002] In recent years, the research of underwater robots has been paid more and more attention by various countries. How to improve the efficiency and maneuverability of underwater robots while reducing noise is always an important issue in the research of underwater robot technology. In the early days, underwater robots using propellers or water jets as propellers often generated side vortices, reducing efficiency. As the oldest vertebrate, fish has excellent underwater movement ability, and its swimming efficiency generally exceeds 80%. In sharp contrast, the propulsion efficiency of traditional propellers is only half of it. In addition, in terms of maneuverability, the barracuda can reach 200m / s when quickly starting to catch prey 2 These are excellent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H1/36
CPCB63H1/36
Inventor 张世武李校祥钱云朱靖秦丰华杨基明
Owner UNIV OF SCI & TECH OF CHINA
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