Bipedal robot makes history after running 5 km on a single charge

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A bipedal robot, designed at Oregon State University (OSU), made history after covering 5 km in just 53 minutes. Cassie, the robot, was developed under the supervision of robotics professor Jonathan Hurst and produced by Agility Robotics, which focuses on leg mobility. The robot was first introduced, together with artificial intelligence professor Alan Fern, in 2017 and since then OSU students have been exploring machine learning for robots.

He uses machine learning to control a running gait and completed the 5 km trip to the OSU campus on a single battery charge. Professor Hurst said the students combined expertise in biomechanics and existing robot control approaches with new machine learning tools to shape Cassie. “This type of holistic approach will allow performance levels similar to those of animals. It’s incredibly exciting, ”said Professor Hurst in a declaration.

The robot has knees that bend like an ostrich’s, and it has learned to run with what is called a “deep reinforcement learning” algorithm. The team said dynamic balancing is a crucial part of running and Cassie makes endless subtle adjustments to stay upright while on the move.

Jeremy Dao, a doctoral student at Dynamic Robotics Laboratory, OSU, said the robot is efficient, for the way it was designed and built, adding that the team was able to reach the limits of the hardware and demonstrate what it can do. .

On “deep reinforcement learning,” another student Yesh Godse, an undergraduate student at the lab, said it is a powerful AI method that unlocks skills such as running , jump and go up and down the stairs.

Professor Hurst said the time is not far away when walking robots will be a common sight, similar to automobiles and even have a similar impact. The limiting factor, Professor Hurst added, has been the science and understanding of legged locomotion. He said, however, that research at OSU had made many breakthroughs.

During Cassie’s 5K run, which the robot completed in 53 minutes and 3 seconds, 6.5 minutes were spent resetting it after it fell twice. He fell the first time because of an overheated computer and then after being asked to execute a turn at too high a speed, the team said.



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