Dynamic window approach using optimal reciprocal collision avoidance cost-critic

    公开(公告)号:US10429847B2

    公开(公告)日:2019-10-01

    申请号:US15712256

    申请日:2017-09-22

    Abstract: A method and system for navigation of a robot along a goal path and avoiding obstacles. The method includes receiving goal pose for one or more robots and determining a goal path for a first robot while avoiding moving and fixed obstacles of a received obstacle map. A first objective function is evaluated to select a preferred velocity from a generated set of candidate velocities, the selecting based on one or more weighted cost functions. A set of velocity obstacles created based on the poses of the one or more robots and the preferred velocity is used in evaluating a second objective function to determine the motion of the robot in the next time cycle. Creating the set of velocity objects includes converting the preferred velocity from a non-holonomic to a holonomic velocity.

    Autonomous robot charging station

    公开(公告)号:US10399443B2

    公开(公告)日:2019-09-03

    申请号:US15712491

    申请日:2017-09-22

    Abstract: An electrical charging station for charging an autonomous robot with first and second cameras used for docking the autonomous robot with the electrical charging station. There is a front side cover with a surface, the front side cover including a first charging member configured to receive a second charging member on the autonomous robot when the autonomous robot is docked with the charging station for charging. There is a first fiducial surface including a first fiducial marker affixed to the first surface. The first fiducial surface defines a plane disposed at a first non-zero angle relative to a plane defined by the surface of the front side cover. There is a second fiducial surface including a second fiducial marker affixed to the second surface. The second fiducial surface defines a plane disposed at a second non-zero angle relative to the plane defined by the surface of the front side cover.

    Mobile robot having a removable wheel-drive assembly

    公开(公告)号:US12240550B2

    公开(公告)日:2025-03-04

    申请号:US17532164

    申请日:2021-11-22

    Abstract: A mobile robot having a removable wheel-drive assembly, comprising a mobile base having a chassis and a first wheel well member with a flange. There is a removable wheel drive assembly with a mounting bracket. There is a motor drive unit disposed on the mounting bracket and a wheel/tire connected to the motor drive unit via an axle. There is a second wheel well member on the mounting bracket and positioned between the motor drive unit and the wheel. The second wheel well member includes a central section having an aperture through which the axle passes and a top surface. The top surface of the central section of the second wheel well member engages with the flange of the first wheel well member of the mobile base.

    Presort system for executing robot-assisted putaway tasks

    公开(公告)号:US11724883B2

    公开(公告)日:2023-08-15

    申请号:US17017833

    申请日:2020-09-11

    Abstract: Systems and methods for presorting and executing robot-assisted putaway tasks in a navigational space include assigning each of a plurality of item storage arrays to one of a plurality of zones defined within the navigational space, scanning an item identifier of at least one of a plurality of unsorted items to be stored at locations throughout the warehouse, retrieving, in response to receiving identifying information corresponding to the at least one scanned unsorted item, item data describing a storage location for putaway within the warehouse of each of the at least one scanned items, determining, from the storage location, a corresponding one of the plurality of zones of the warehouse in which the storage location is located, and placing each scanned unsorted item into an interconnected container of one of the item storage arrays assigned to the corresponding one of the zones.

    Robot obstacle collision prediction and avoidance

    公开(公告)号:US11493925B2

    公开(公告)日:2022-11-08

    申请号:US16809810

    申请日:2020-03-05

    Inventor: Thomas Moore

    Abstract: A method for predicting a collision between a mobile robot and an obstacle in an environment includes obtaining laser scan data for the mobile robot at a current location in the environment. The method also includes predicting a future location of the mobile robot in the environment and producing predicted laser scan data corresponding to the future location of the mobile robot in the environment. The method further includes assessing the predicted laser scan data relative to the mobile robot at the current location to determine whether a collision with an obstacle is predicted.

    SEQUENCE ADJUSTMENT FOR EXECUTING FUNCTIONS ON ITEMS IN AN ORDER

    公开(公告)号:US20220084153A1

    公开(公告)日:2022-03-17

    申请号:US17017758

    申请日:2020-09-11

    Abstract: A method for executing orders assigned to a plurality of robots operating in a warehouse, including receiving an order with a plurality of items, each item associated with an item location. The method includes defining a plurality of regions and identifying the regions which include at least one item location associated with the order received by the robot. The method also includes determining, from the regions identified, which regions which include at least one operator and assessing criteria relating to a current location of the robot and to the item locations associated with the regions having at least one operator. The method further includes selecting an item location to which the robot is to navigate from a current location based on an assessment of criteria relating to the current location of the robot and to the item locations associated with the regions in which are located at least one operator.

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