The kinetic study of the propulsion system of two-joint carangidae bionic fish with crescent-shaped tail fin

To improve the propulsive efficiency of the underwater vehicles based on bionic robot fish and develop the manipulation and propulsion technology with reference to large fish such as sharks, the fish of carangidae propulsion mode was chosen as the research object. By analyzing the motion features of fish body and tail fin of this kind of fish, the one-dimensional steady-state swimming motion mode was established. The two-joint tail fin propulsion system of bionic fish was designed, and the propulsive process was analyzed by kinematics so that the propulsive force was theoretically obtained by the designed system. After the established joint model was simulated under the atmosphere of Matlab, the basic parameters of two-joint propulsion system were obtained by analyzing and calculating the simulation result.