METHOD FOR CONTROLLING WALKING OF ROBOT AND ROBOT

    公开(公告)号:US20190217464A1

    公开(公告)日:2019-07-18

    申请号:US16212619

    申请日:2018-12-06

    摘要: A method for controlling walking of a robot includes: determining a stance of the robot, in response to the robot being in a single-leg stance, determining a rotational angle of each of the joints, and calculating a value of a torque produced by a force of gravity acting on the robot about each of the joints; in response to the robot being in a double-leg stance, calculating a position of a projection of a center of mass of the robot on a surface where the robot stands, and calculating a value of a torque produced by a force of gravity acting on the robot about each of the joints according to the position of the projection; obtaining a feed-forward current of each of the joints; and applying the feed-forward current of each of the joints to a corresponding actuator of this joints.

    ANTI-FALLING ROBOTS, ANTI-FALLING METHOD, AND ANT-FALLING DEVICE OF ROBOTS DURING POWER OUTAGE

    公开(公告)号:US20180186415A1

    公开(公告)日:2018-07-05

    申请号:US15633647

    申请日:2017-06-26

    IPC分类号: B62D57/032 G06F1/32

    摘要: An anti-falling method during power outage includes: transmitting first controlling signals to a first leg mechanism and a second leg mechanism to control a first leg and a second leg of the robot to be perpendicular to ground upon determining a power outage condition; transmitting second controlling signals to the first leg mechanism and/or the second leg mechanism to control the first leg and/or the second leg of the robot; controlling the first leg and/or the second leg to move the center of gravity of the robot close to the ground; transmitting third controlling signals to the first leg mechanism and the second leg mechanism to stop movements of the first leg mechanism and the second leg mechanism upon determining a stop condition.

    FOOT STRUCTURE AND HUMANOID ROBOT
    34.
    发明申请

    公开(公告)号:US20180186015A1

    公开(公告)日:2018-07-05

    申请号:US15465609

    申请日:2017-03-22

    摘要: A foot structure for contacting the ground and connecting to a leg structure of a humanoid robot, includes: a foot assembly for contacting the ground; a first servo mounted on the foot assembly and including a first output shaft; a connecting assembly rotatably connected to the foot assembly and to constitute an ankle portion; and a second servo mounted on the connecting assembly and connected with the leg structure, the second servo including a second output shaft perpendicular to the first output shaft; the connecting assembly being arranged perpendicularly to the foot assembly and including a first connecting structure used to mount the first output shaft and rotatably connected to the foot assembly, and a second connecting structure connected to the first connecting structure and used to mount the second output shaft.

    Rotatable robot foot with perpendicular soles

    公开(公告)号:US10000248B1

    公开(公告)日:2018-06-19

    申请号:US15729958

    申请日:2017-10-11

    申请人: Schaft Inc.

    IPC分类号: B25J9/16 B25J5/00 B62D57/032

    摘要: Example embodiments relate to a robotic device with at least two legs. Each leg includes a foot including a first sole and a second sole perpendicular to the first sole. Each leg additionally includes an ankle joint configured to rotate the foot from a first position in which the first sole is contacting a ground surface to a second position in which the second sole is contacting the ground surface. The robotic device includes a control system. When the foot of a given leg of the at least two legs is in the first position, the control system may determine to cause the foot of the given leg to switch from the first position to the second position, and may cause the ankle joint of the given leg to rotate the foot of the given leg from the first position to the second position.

    COMPUTATIONAL DESIGN OF ROBOTS FROM HIGH-LEVEL TASK SPECIFICATIONS

    公开(公告)号:US20180107175A1

    公开(公告)日:2018-04-19

    申请号:US15292525

    申请日:2016-10-13

    IPC分类号: G05B13/02 G05B11/01

    摘要: A robot design system, and associated method, that is particularly well-suited for legged robots (e.g., monopods, bipeds, and quadrupeds). The system implements three stages or modules: (a) a motion optimization module; (b) a morphology optimization module; and (c) a link length optimization module. The motion optimization module outputs motion trajectories of the robot's center of mass (COM) and force effectors. The morphology optimization module uses as input the optimized motion trajectories and a library of modular robot components and outputs an optimized robot morphology, e.g., a parameterized mechanical design in which the number of links in each of the legs and other parameters are optimized. The link length optimization module takes this as input and outputs optimal link lengths for a particular task such that the design of a robot is more efficient. The system solves the problem of automatically designing legged robots for given locomotion tasks by numerical optimization.

    Methods and systems for planning a body position of a robotic device

    公开(公告)号:US09868210B1

    公开(公告)日:2018-01-16

    申请号:US14984177

    申请日:2015-12-30

    申请人: Google Inc.

    发明人: Eric Whitman

    IPC分类号: B25J9/16 B62D57/032

    摘要: Example methods and systems for planning a body position for a robotic device are described. An example method includes receiving a reference step path that defines predetermined step locations for end components of a robotic device. The method also includes receiving a set of constraints, receiving a predetermined height and pitch, and assigning a cost to each of a height of the body, a height acceleration of the body, and a pitch acceleration of the body. The method also includes determining a new height and a new pitch of the body that reduces the height acceleration and the pitch acceleration of the body when the end component moves along the reference step path. Further, the method includes instructing the robotic device to actuate the plurality of appendages to achieve the new height and the new pitch of the body when the end component moves along the reference step path.