The frog-inspired robots with amphibious locomotion ability have greatest application prospects and practical valuein the fields of resource exploration and environmental reconnaissance. Although frog-inspired robots have been ofinterest over many years, research on frog-inspired amphibious robots is still in its infancy. Since the locomotionmechanism is the basis for the research of frog-inspired amphibious robots, the research methods of the singlemotion mechanism of frogs are firstly inductive analyzed, and a reference scheme is proposed to inspire the researchon the amphibious motion mechanism. Then, we collect and introduce a systematic discussion of the researchstatus of frog-inspired robots according to the locomotion mode. The characteristics of the robots are analyzedfrom the aspects of design concept, structural characteristics, driving method, and motion performance. Finally, thetechnical challenges faced by the research on the frog-inspired robots are analyzed, and the development trend ispredicted. The authors hope that this study can provide an informative reference for future research in the directionof frog-inspired amphibious robot.
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