一种基于非线性刚度弹性耦合尾的仿生鱼
By designing a nonlinear stiffness elastic coupling tail, combined with a Scottish yoke and a bistable mechanism, the biomimetic fish tail simulates the muscle changes of a fish tail, achieving more efficient and lower-noise underwater propulsion and solving the problems of slow response speed and low propulsion efficiency in existing biomimetic robotic fish.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN UNIV
- Filing Date
- 2025-11-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing biomimetic robotic fish neglect the inherent elastic behavior of the muscles and tendons in the tail, resulting in slow response speed, low propulsion efficiency, and difficulty in achieving low-energy, high-maneuverability underwater propulsion.
The design adopts a nonlinear stiffness elastic coupling tail, which combines a Scottish yoke and a bistable mechanism to simulate the muscle changes of a fish tail. A passive joint composed of a horizontal spring and a torsion spring is used to realize the swinging and pitching motion. Combined with the pre-compressed elastic element of the bistable mechanism, the elastic potential energy is converted into mechanical energy to drive the left and right swing of the bionic fish tail.
Achieving greater and faster motion response with less energy consumption improves the propulsion efficiency and maneuverability of the biomimetic fish, reduces energy consumption, and is less noisy, making it less likely to be detected by underwater creatures.
Smart Images
Figure CN121201339B_ABST