Fish-like Underwater Robot Integrated Tension Skeleton
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Solution Overview
Problem
Existing fish-like underwater robots face challenges in stability and control due to complex motion mechanisms and the need for multiple motors to drive skeleton units, leading to increased size and weight, as well as noise generation from propeller-based movement systems.
Innovation Solution
A fish-like underwater robot design featuring an integrated tension and swing component with cross-shaped tension elements and a driving assembly, where the driving motor, gear set, and torsion ropes work together to swing the tail, allowing for forward movement without needing to drive each tension element individually, thus simplifying control and reducing size and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple motors are used to drive different skeleton units, then the desired motion can be fulfilled, but the design and layout become more complicated and the available space in the bionic fish body is reduced
Solution Approach 1:
The patent merges multiple skeleton units into a single integrated tension skeleton structure. Instead of using separate motors for each skeleton unit, one motor drives the entire tension skeleton through a winding mechanism, reducing the number of components and simplifying the overall design while maintaining the ability to achieve complex fish-like motions
2Adaptability or versatility
If multiple motors are used to drive different skeleton units, then the desired motion can be fulfilled, but the available space in the bionic fish body is reduced
Solution Approach 1:
The patent combines multiple skeleton units into one integrated tension skeleton structure, significantly reducing the number of motors and mechanical components. This merging approach frees up substantial space within the bionic fish body, allowing for better integration of other systems while maintaining full motion capability
3Power
If propeller-based driving method is used, then great driving power can be provided, but loud noises may be generated
Solution Approach 1:
The patent replaces the traditional propeller-based mechanical driving system with a bio-inspired tension skeleton system that generates thrust through undulating motions. This substitution eliminates the loud noises associated with propellers while maintaining effective driving power through the coordinated movement of the tension skeleton and tail fin
4Ease of operation
If traditional fish-like tail swing structure is used, then tail swing can be realized, but it is necessary to drive each tension element individually, increasing control difficulty
Solution Approach 1:
The patent merges multiple tension elements into a single integrated tension skeleton that can be controlled as one unit. Instead of individually driving each tension element, a single motor winds and unwinds the integrated structure, enabling tail swing while dramatically simplifying the control system and reducing operational complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances stability and control by using a single motor to drive the integrated tension skeleton structure, reducing noise and complexity, while maintaining efficient movement without increasing size or weight.
Implementation Method 1
the driving assembly comprises a driving motor, a gear set and two torsion ropes
Data Source
AI summary
A fish-like underwater robot includes a shell, a driving assembly and an integrated tension and swing component. The integrated tension and swing component includes a plurality of tension ropes and tension elements. Every two adjacent tension elements are connected in series through the plurality of tension ropes. The driving assembly and the integrated tension and swing component are disposed inside the shell. The driving assembly is disposed at a head of the shell. The integrated tension and swing component has an end connected to a tail of the shell and an end connected to the driving assembly. When the fish-like underwater robot is used, the driving assembly drives the integrated tension and swing component to swing to generate power for forward movement. A traditional fish-like tail swing structure is replaced with an integrated tension skeleton structure.