Researchers are investigating fluid-robot interactions at these scales, motivated by fish that use vortices to save energy. Onboard sensing, computation, and actuation are essential for effective navigation. Despite their potential, data-driven algorithms frequently lack practical validation.
Using inertial measurements to infer background flows is a new approach that was motivated by fish’s vestibular systems’ ability to sense acceleration. This method provides an affordable substitute for intricate flow sensors in self-driving cars.
In this regard, the Caltech team developed an underwater robot that uses these flows to reduce energy consumption by “surfing” vortices to reach its destination.