Non-linear Vibration and Dynamic Characteristic of Fish-like Robot Controlled by GMM Actuator

The swimming mechanism of the underwater fish-like robot, which is controlled by the giant magnetostrictive material actuator, is studied with the aid of the non-linear vibration method. A mechanics model of the robot is presented based on the relationship between the driving force and frequencies, which is controlled by external magnetic fields. The numerical results show that steady and unsteady solution of the project accord with the dynamic characteristics of tuna and pike fish, respectively.