Fish's outstanding motion and coordination performance make it an excellent source of inspiration for scientists and engineers aiming to design and control next-generation autonomous underwater vehicles within the framework of bionics.This paper offers a general review of the current status of bionic robotic fish,with particular emphasis on the hydrodynamic modeling and testing,kinematic modeling and control,learning and optimization,as well as motion coordination control.Among these aspects,representative studies based on ideas and concepts inspired from fish motion and coordination are discussed.At last,the major challenges and the future research directions are addressed in the context of integration of various research streams from ichthyologic,hydrodynamic,mechanical,electronic,control,and artificial intelligence.Further development of bionic robotic fish can be utilized to execute some specific missions in complex underwater environments,where operations are unsafe or impractical for divers or conventional underwater vehicles.
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