Mechanical Analysis on Propulsion Mechanism of Fish Micro-robot

MEMS researchers are paying more and more attention to study on locomotive microrobot in liquid. Based on motion similarity of microrobot drive fin and fish caudal fin, this paper discusses fish muscle hydrodynamics, and analyzes propulsion force produced by biomimetic fish-like drive fin. Preliminary analysis shows that the propulsion force is relative to serval factors, such as liquid viscousness, drive fin wet area and offset, etc.