ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,769, issued on Dec. 23, was assigned to UBTECH ROBOTICS CORP LTD (Shenzhen, China).

"Method for foot/ground contact detection for robot, robot and computer-readable medium" was invented by Jiajun Wang (Shenzhen, China), Mingguo Zhao (Shenzhen, China) and Youjun Xiong (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for detecting contact of a swinging leg of a robot with ground includes: obtaining a torque on each joint of the swinging leg when the robot is in a swing phase; estimating a force on a foot of the swinging leg by using a force Jacobian matrix based on the torque on each joint of the swinging leg, and calculating a...