Patents by Inventor Xingxing Ma

Xingxing Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11983012
    Abstract: A dynamic footprint set generation method, a biped robot using die same, and a computer readable storage medium are provided. The method includes: obtaining preset footprint calculation parameters; calculating a landing point position based on the preset footprint calculation parameters; determining a landing point range based on a landing point position, and performing a collision detection on the landing point range; recording the corresponding landing point position in a footprint set in response to the detection result representing there being no collision; obtaining a preset adjustment amplitude to update a preset displacement angle after the recording is completed; and returning to the calculating the landing point position until the footprint set is generated.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 14, 2024
    Assignee: UBTECH ROBOTICS CORP LTD
    Inventors: Xingxing Ma, Chunyu Chen, Yizhang Liu, Ligang Ge, Hongge Wang, Jie Bai, Jiangchen Zhou, Zheng Xie
  • Patent number: 11878426
    Abstract: A biped robot gait control method as well as a robot and a computer readable storage medium are provided. During the movement, the system obtains a current supporting pose of a current supporting leg of the biped robot, and calculates a relative pose between the supporting legs based on the current supporting pose and a preset ideal supporting pose of a next step. The system further calculates modified gait parameters of the next step based on the relative pose between the two supporting legs and a joint distance between left and right ankle joints in an initial state of the biped robot when standing. Finally, the system controls the next supporting leg to move according to the modified gait parameters.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: January 23, 2024
    Assignee: UBTECH ROBOTICS CORP LTD
    Inventors: Xingxing Ma, Chunyu Chen, Ligang Ge, Hongge Wang, Mingqiang Huang, Jiangchen Zhou, Yizhang Liu, Zheng Xie, Youjun Xiong
  • Publication number: 20220206501
    Abstract: A dynamic footprint set generation method, a biped robot using die same, and a computer readable storage medium are provided. The method includes: obtaining preset footprint calculation parameters; calculating a landing point position based on the preset footprint calculation parameters; determining a landing point range based on a landing point position, and performing a collision detection on the landing point range; recording the corresponding landing point position in a footprint set in response to the detection result representing there being no collision; obtaining a preset adjustment amplitude to update a preset displacement angle after the recording is completed; and returning to the calculating the landing point position until the footprint set is generated.
    Type: Application
    Filed: August 31, 2021
    Publication date: June 30, 2022
    Inventors: Xingxing Ma, Chunyu Chen, Yizhang Liu, Ligang Ge, Hongge Wang, Jie Bai, Jiangchen Zhou, Zheng Xie
  • Publication number: 20220203534
    Abstract: A path planning method and a biped robot using the same are provided. The method includes: generating a candidate node set for a next foot placement based on a biped robot's own parameters and joint information of a current node, adding valid candidate nodes in the candidate node set to a priority queue so as to select optimal nodes for realizing next node expansion. These optimal nodes are output to generate a foot placement sequence from an initial node to a target node, which can greatly reduce the search amount for path nodes when the robot's legs intersect and touch the ground, thereby improving the efficiency of path planning.
    Type: Application
    Filed: November 2, 2021
    Publication date: June 30, 2022
    Inventors: Xingxing Ma, Chunyn Chen, Ligang Ge, Yizhang Liu, Hongge Wang, Jie Bai, Zheng Xie, Jiangchen Zhou, Meihui Zhang, Shuo Zhang, Youjun Xiong
  • Publication number: 20220193899
    Abstract: A pose control method for a robot includes: estimating a first set of joint angular velocities of all joints of the robot according to a balance control algorithm; estimating a second set of joint angular velocities of all joints of the robot according to a momentum planning algorithm; estimating a third set of joint angular velocities of all joints of the robot according to a pose return-to-zero algorithm; and performing pose control on the robot according to the first set of joint angular velocities, the second set of joint angular velocities, and the third set of joint angular velocities.
    Type: Application
    Filed: September 29, 2021
    Publication date: June 23, 2022
    Inventors: Hongge Wang, Chunyu Chen, Yizhang Liu, Ligang Ge, Jie Bai, Xingxing Ma, Jiangchen Zhou, Youjun Xiong
  • Publication number: 20220194500
    Abstract: A stepping down trajectory planning method as well as a robot using the same and a computer readable storage medium are provided. The method includes: dividing a stepping down process of the robot into a plurality of planned stages; adjusting a start position of a swing leg of the robot according to an ankle-to-heel distance, where the ankle-to-heel distance is a horizontal distance between an ankle joint of the swing leg of the robot and a heel of the swing leg of the robot; determining an initial state and an end state of the swing leg in each of the planned stages according to the start position; and obtaining a planned trajectory of the swing leg by performing a curve fitting on the swing leg in each of the planned stages the initial state and the end state.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 23, 2022
    Inventors: Hongge Wang, Ligang Ge, Yizhang Liu, Jie Bai, Chunyu Chen, Xingxing Ma, Jiangchen Zhou, Youjun Xiong
  • Publication number: 20220193896
    Abstract: A robot balance control method as well as a robot using the same and a computer readable storage medium are provided. In the method, a brand new flywheel model different from the existing flywheel model is created. In this flywheel model, the foot of the support leg of the robot is equivalent to the massless link of the flywheel model, while rest parts of the robot are equivalent to the flywheel of the flywheel model. Compared with the various models in the prior art, this flywheel model is more in line with the actual situation of the robot during the monoped supporting period. By controlling the posture of the foot of the support leg based on this flywheel model, a better balance effect can be achieved, which avoids the overturning of the robot.
    Type: Application
    Filed: December 21, 2021
    Publication date: June 23, 2022
    Inventors: Hongge Wang, Chunyu Chen, Yizhang Liu, Ligang Ge, Jie Bai, Xingxing Ma, Jiangchen Zhou
  • Publication number: 20220152827
    Abstract: A biped robot gait control method as well as a robot and a computer readable storage medium are provided. During the movement, the system obtains a current supporting pose of a current supporting leg of the biped robot, and calculates a relative pose between the supporting legs based on the current supporting pose and a preset ideal supporting pose of a next step. The system further calculates modified gait parameters of the next step based on the relative pose between the two supporting legs and a joint distance between left and right ankle joints in an initial state of the biped robot when standing. Finally, the system controls the next supporting leg to move according to the modified gait parameters.
    Type: Application
    Filed: May 6, 2021
    Publication date: May 19, 2022
    Inventors: Xingxing Ma, Chunyu Chen, Ligang Ge, Hongge Wang, Mingqiang Huang, Jiangchen Zhou, Yizhang Liu, Zheng Xie, Youjun Xiong