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公开(公告)号：US20220147754A1
公开(公告)日：2022-05-12
申请号：US17463523
申请日：2021-08-31
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Rui Guo , Zhichao Liu , Zhanjia Bi , Yongsheng Zhao
IPC: G06K9/62
Abstract: A relocation method and a mobile machine using the same are provided. The method includes: obtaining a global map and a current scan map of a target scene where a mobile machine is located, and generating a local sub-map based on the global map; obtaining a black boundary in the local sub-map, determining a length and a curve complexity of the black boundary, and determining a weight of the black boundary based on the length and the curve complexity of the black boundary; determining an estimated pose and a target black boundary based on the local sub-map and the current scan image, and obtaining a matching value between the current scan image and the local sub-map based on a weight of the target black boundary; and determining the estimated pose as a relocated pose of the mobile machine in response to the matching value being larger than a preset threshold.
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公开(公告)号：US20220143841A1
公开(公告)日：2022-05-12
申请号：US17095758
申请日：2020-11-12
Inventor： Won Suk You , Chengkun Zhang , Huan Tan , Youjun Xiong
Abstract: A robotic hand includes a baseplate, a finger having multiple phalanges that are rotatably coupled to one another, a first of the phalanges having a first end rotatably coupled to the baseplate and a second end and a second of the phalanges rotatably coupled to the second end about an axis of rotation, an actuating mechanism mounted on the baseplate, the actuating mechanism configured to actuate rotation of the plurality of phalanges, and a tendon having opposite ends that are respectively attached to the second of the phalanges and the baseplate. The second of the phalanges has an engagement portion arranged around the axis of rotation, and the tendon is wrapped around a portion of the engagement portion to generate a force acting on the second end of the first of the phalanges, causing the first of the phalanges to rotate from a flexed state to an extended state.
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公开(公告)号：US11325264B1
公开(公告)日：2022-05-10
申请号：US17095758
申请日：2020-11-12
Inventor： Won Suk You , Chengkun Zhang , Huan Tan , Youjun Xiong
Abstract: A robotic hand includes a baseplate, a finger having multiple phalanges that are rotatably coupled to one another, a first of the phalanges having a first end rotatably coupled to the baseplate and a second end and a second of the phalanges rotatably coupled to the second end about an axis of rotation, an actuating mechanism mounted on the baseplate, the actuating mechanism configured to actuate rotation of the plurality of phalanges, and a tendon having opposite ends that are respectively attached to the second of the phalanges and the baseplate. The second of the phalanges has an engagement portion arranged around the axis of rotation, and the tendon is wrapped around a portion of the engagement portion to generate a force acting on the second end of the first of the phalanges, causing the first of the phalanges to rotate from a flexed state to an extended state.
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公开(公告)号：US20220134581A1
公开(公告)日：2022-05-05
申请号：US17499890
申请日：2021-10-13
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Zhongkui Huang , Zheng Xie , Hongyu Ding , Qixiang Luo
Abstract: An energy storing assistive mechanism includes a barrel having a first pivot end and an open end, a rod having a first end that passes through the open end and is received in the barrel, an elastic structure including two ends that abut against the first end of the rod and the first pivot end, a uni-directional gear rack having a second pivot end away from the barrel, and a locking mechanism fixed to the rod, the locking mechanism comprising a locking member and an actuator assembly that is to drive the locking member to move between a first position where the locking member is engaged with the gear rack, and a second position where the locking member is disengaged from the gear rack.
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公开(公告)号：US11287825B2
公开(公告)日：2022-03-29
申请号：US16576794
申请日：2019-09-20
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Zhichao Liu , Youjun Xiong , Jian Zhang
Abstract: The present disclosure provides a path tracking method as well as a mobile robot using the same. The method includes: obtaining a preset path and a current position of the mobile device; determining a forward-looking path point corresponding to the current position on the preset path; obtaining a path curvature corresponding to the forward-looking path point; and determining an adjustment velocity of the mobile device at the current position based on the path curvature corresponding to the forward-looking path point. In this manner, the adjustment velocity of the mobile device can be determined based on the curvature of the path, so as to adjust the velocity of the mobile device and improve the stability of path tracking of the mobile device at different path curvatures.
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Patent Agency Ranking
公开(公告)号：US11282503B2
公开(公告)日：2022-03-22
申请号：US17095751
申请日：2020-11-12
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Ruotong Wang , Dongyan Huang , Xian Li , Jiebin Xie , Zhichao Tang , Wan Ding , Yang Liu , Bai Li , Youjun Xiong
Abstract: The present disclosure discloses a voice conversion training method. The method includes: forming a first training data set including a plurality of training voice data groups; selecting two of the training voice data groups from the first training data set to input into a voice conversion neural network for training; forming a second training data set including the first training data set and a first source speaker voice data group; inputting one of the training voice data groups selected from the first training data set and the first source speaker voice data group into the network for training; forming the third training data set including the second source speaker voice data group and the personalized voice data group that are parallel corpus with respect to each other; and inputting the second source speaker voice data group and the personalized voice data group into the network for training.
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公开(公告)号：US20220068109A1
公开(公告)日：2022-03-03
申请号：US17138944
申请日：2020-12-31
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Yusheng Zeng , Yepeng Liu , Jun Cheng , Jianxin Pang , Youjun Xiong
Abstract: A mask wearing status alarming method, a mobile device, and a computer readable storage medium are provided. The method includes: performing a face detection on an image to determine face areas each including a target determined as a face; determining a mask wearing status of the target in each face area; confirming the mask wearing status of the target in each face area using a trained face confirmation model to remove the face areas comprising the target being mistakenly determined as the face and determining a face pose in each of the remaining face areas to remove the face areas with the face pose not meeting a preset condition, in response to determining the mask wearing status as a not-masked-well status or a unmasked status; and releasing an alert corresponding to the mask wearing status of the target in each of the remaining face areas.
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公开(公告)号：US11260528B2
公开(公告)日：2022-03-01
申请号：US16726196
申请日：2019-12-23
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Wenzhi Xu , Xiangbin Huang , Wenxue Xie , Youjun Xiong
Abstract: An localization correction method for a robot, comprising acquiring first position information of the robot in a first coordinate system; acquiring second position information of the robot in a second coordinate system after the robot executes a motion command; establishing a transformation model between the first position information and the second position information based on the first coordinate system and the second coordinate system; calculating a compensation value according to the transformation model; and generating a reset command according to the compensation value, and adjusting the localization of the robot according to the reset command.
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59.发明申请公开(公告)号：US20210387340A1
公开(公告)日：2021-12-16
申请号：US17137382
申请日：2020-12-30
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Xiaoyu Ren , Liqun Huang , Yuesong Wang , Youjun Xiong
IPC: B25J9/16
Abstract: The present disclosure provides a robotic arm space position adjustment method, a robotic arm controller, and a computer readable storage medium. The method includes: calculating a potential energy function of moving a feature point of the robotic arm to a reference point based on an obtained preset acceleration of an artificial gravitational field, first vector of the artificial gravitational field in a preset reference coordinate system, second vector of the feature point of the robotic arm in the preset reference coordinate system, and a third vector of the reference point in the preset reference coordinate system; and calculating a null space virtual moment of moving the feature point of the robotic arm to the reference point based on a preset null space operator and the potential energy function, so as to adjust each joint of the robotic arm.
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60.发明授权公开(公告)号：US11179855B2
公开(公告)日：2021-11-23
申请号：US16669551
申请日：2019-10-31
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Hao Dong , Youjun Xiong , Yuesong Wang , Mingguo Zhao
Abstract: The present disclosure provides an acceleration compensation method for a humanoid robot as well as an apparatus and a humanoid robot using the same. The method includes: calculating an angular acceleration of each joint and calculating a six-dimensional acceleration of a centroid of a connecting rod corresponding to the joint in an absolute world coordinate system, if the humanoid robot is in a single leg supporting state; calculating a torque required by the angular acceleration of each joint of the humanoid robot; determining a feedforward current value corresponding to the torque of each joint; and superimposing the feedforward current value on a control signal of each joint to control the humanoid robot. In this manner, the influence of the acceleration can be effectively suppressed, the rigidity of the PID controller of the humanoid robot can be reduced, thereby improving the stability of the entire humanoid robot.
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