Design of a Fish-Shaped Robot and Hydrodynamic Analysis

Underwater robots are an effective means of underwater resource exploration. Current research on underwater robots focuses more on thruster propulsion to improve efficiency. However, the method based on thrusters has disadvantages such as high noise. Underwater robotic fish achieve more stable and concealed swimming by imitating the movements of fish. Based on this, this paper designs an underwater robotic fish structure and its driving mode. Subsequently, its hydrodynamic characteristics were analyzed through hydrodynamic simulation. Finally, the relationship between the swing amplitudes and the propulsion speed of the robotic fish was studied. This will lay the foundation for our further research on robotic fish.