page_title: Robot fish
section_title: Toys
hierarchical_section_title: Robot fish / Uses / Toys
caption_attribution_description: English: Side view of a soft under-actuated-robot that mimics a tuna fish. A simple mechanism consisting of a flexible visco-elastic body is excited so that its dominant modes of vibration match the desired body motions for locomotion. Français&#160;: Vue de profil d'un robot mou subaquatique téléguidé bioinspiré (imitation de la forme du thon). Un mécanisme simple constitué d'un corps viscoélastique souple est excité de telle manière que les modes dominants d'ondulation correspondent aux mouvements du corps souhaitées pour la locomotion
context_page_description: A robot fish is a type of bionic robot, which has the shape and locomotion of a living fish. Since the Massachusetts Institute of Technology first published research on them in 1989, there have been more than 400 articles published about robot fish. According to these reports, approximately 40 different types of robot fish have been built, with 30 designs having only the capability to flip and drift in water. Most robot fish are designed to emulate living fish which use Body-caudal fin propulsion. BCF robot fish can be divided into three categories: Single Joint, Multi-Joint, and smart material-based design. The most important parts of researching and developing robot fish are advancing their control and navigation, enabling them to 'communicate' with their environment, making it possible for them to travel along a particular path, and to respond to commands to make their 'fins' flap.
context_section_description: Toy robot fish are the most common robot toys on the market. they are most commonly used for entertainment, although some are used for research. The design of these toys are simple and inexpensive. They are usually divided into two categories: automatic cruise robot fish and controlled movement robot fish. The simplest ones consist of a soft body (MJ), motor (tail) and head (basic electric control element). They use a battery to provide energy for the motor to produce movement and use the remote control systems to achieve the power of steering. In contrast, the complexity of toys and robot fish, with the purpose of research, is almost the same. They are not only fully automated, but can simulate fish behavior. For example, if you put a foreign object in the water with the robot fish, it will produced a movement similar to that of a real fish. It will move away from the foreign object and the speed of swimming will increase. It exhibits a state of shock and confusion to the foreign object much like a real fish would. Robot fish record this type of behavior in advance.
caption: A simple robot fish consisting of a flexible visco-elastic body
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