An underwater robot mimicking jet propulsion inspired by feather sea star

Abstract

This paper introduces the design and modelling of an underwater robot, mimicking the prototype of Antedon Petasus (Feather sea star). The design includes springs and cables driven by servomotors for the tension control of springs. In underwater environment, soft skeleton mechanisms are needed for the proper interaction. This can be achieved by using soft robotic links like cable driven springs using servomotors in various propulsion patterns. The cable-driven structure is a kind of parallel mechanism transmitting forces and motions by cables which are connected to the motors mounted on a fixed base. Solidworks is

A novel underwater bipedal walking soft robot bio-inspired by the coconut octopus

“…The mimic octopus, 'seaweed octopus', and 'coconut octopus' stimulate scientists to develop new robots with their superior flexibility, bipedal walking ability and deformation imitating ability. Therefore, underwater robots, such as bionic squid, bionic jellyfish [14], bionic octopus [13], and bionic starfish [15], were developed based on the water jet propulsion mechanism of molluscs. Although the speed of jet propulsion is much faster than that of bipedal walking, it is physiologically inefficient because jet propulsion will quickly cause its own negative oxygen state and the high pressure generated in the body will stop the octopus's heart.…”