IT House reported on November 20 that at the 22nd Sangju Persimmon Marathon held in South Korea on November 17, the four-legged walking robot "Raibo 2" took 4 hours, 19 minutes and 52 seconds (IT House note: the champion is 2 hours 36 minutes 32 seconds, and the world record is 2 hours 00 minutes 35 seconds), completed the regular marathon of 42.195 kilometers, and also won the finisher medal.
According to reports, the race includes two hills with an altitude difference of 50m, making it a difficult track even for amateur runners. Running a marathon means that it is able to dodge road obstacles and perceive the movements of the marathon runners around it, and it must have a range of more than 42 kilometers.
It is the world's first quadruped robot to complete an all-marathon race, proving its ability to stably perform tasks such as delivery and patrol in complex urban environments.
According to reports, "Raibo 2" is the latest achievement developed by the research group of "Huangfu Jimin", a professor at the Department of Mechanical Engineering of the Korea Advanced Institute of Science and Technology (KAIST).
Unlike ordinary quadruped robots, it also incorporates AI technology. The team developed a gait controller for it using reinforcement learning algorithms and simulated it in their own simulation environment, RaiSim, to ensure stable walking performance.
Dr. Zhongren Li, first co-author of the paper, said: "For example, without AI, the technology of storing the kinetic energy generated on the downhill road in batteries would not be possible. Unlike wheels, which simply roll forward, highly developed AI controls are essential to store energy while walking on all fours. "
In addition, the Raibo 2 features a high-torque transparent joint mechanism that efficiently recovers energy when descending steep slopes and partially recovers energy when going uphill. The stability of the RAION robot has also been significantly improved by working with the RAION robot, which was founded by researchers in Prof. Fan Bo's lab.
"Raibo 2" suppresses the loss of collision energy by reducing the speed of contact between the foot and the ground, and by minimizing the slippage on contact, the kinetic energy of the body can be maintained in the direction of motion.