The use of highly dynamic bistable soft actuators enables varied locomotion. Many animals are capable of smoothly transitioning between walking, jumping, crawling, and swimming without requiring extensive adjustments or reconfiguring. In contrast, most robots can't. However, researchers at Carne
Researchers at Carnegie Mellon have created soft robots that can seamlessly shift from walking to swimming. Credit: Carnegie Mellon UniversityMany animals are capable of smoothly transitioning between walking, jumping, crawling, and swimming without requiring extensive adjustments or reconfiguring.have developed soft robots that are capable of seamlessly switching between modes of movement, such as from walking to swimming or crawling to rolling.
“Matching how animals transition from walking to swimming to crawling to jumping is a grand challenge for bio-inspired and soft robotics,” said Carmel Majidi, a professor in the Mechanical Engineering Department in CMU’s College of Engineering. “You need to have legs to walk on land, and you need to have a propeller to swim in the water. Building a robot with separate systems designed for each environment adds complexity and weight,” said Xiaonan Huang, an assistant professor of robotics at the University of Michigan and Majidi’s former Ph.D. student. “We use the same system for both environments to create an efficient robot.”
The actuators require only a hundred milliseconds of electrical charge to change their shape, and they are durable. The team had a person ride a bicycle over one of the actuators a few times and changed their robots’ shapes hundreds of times to demonstrate durability.
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