Abstract: A system includes a controller and a serial robot having links that are interconnected by a joint, wherein the robot can grasp a three-dimensional (3D) object in response to a commanded grasp pose. The controller receives input information, including the commanded grasp pose, a first set of information describing the kinematics of the robot, and a second set of information describing the position of the object to be grasped. The controller also calculates, in a two-dimensional (2D) plane, a set of contact points between the serial robot and a surface of the 3D object needed for the serial robot to achieve the commanded grasp pose. A required joint angle is then calculated in the 2D plane between the pair of links using the set of contact points. A control action is then executed with respect to the motion of the serial robot using the required joint angle.
Type:
Grant
Filed:
August 11, 2011
Date of Patent:
June 30, 2015
Assignees:
GM Global Technology Operations LLC, The United States of America as represented by the Administrator of the National Aeronautics and Space Administrator, Oceaneering Space Systems
Inventors:
Jianying Shi, Brian Hargrave, Myron A Diftler
Abstract: An enclosed structure is provided for use with a refrigerator having a door assembly. The enclosed structure preferably contains superinsulation materials and a plurality of matching drawers. The enclosed structure preferably includes corner joints which minimize thermal energy transfer between adjacent superinsulation panels. The refrigerator may include a cooling system having a thermoelectric device for maintaining the temperature within the refrigerator at selected values. If desired, a fluid cooling system and an active gasket may also be provided between the door assembly and the enclosed structure. The fluid cooling system preferably includes a second thermoelectric device to maintain the temperature of fluid flowing through the active gasket at a selected value. The drawers associated with the refrigerator may be used for gathering, processing, shipping and storing food or other perishable items.
Type:
Grant
Filed:
June 6, 1995
Date of Patent:
February 25, 1997
Assignees:
Owens-Corning Fiberglas Corp., Oceaneering Space Systems
Assignees:
GM Global Technology Operations, Inc., NASA Lyndon B. Johnson Space Center, Oceaneering Space Systems
Inventors:
Douglas Martin Linn, Chris A. Ihrke, Robert O. Ambrose, Joshua S Mehling, Myron A Diftler, Adam H Parsons, Nicolaus A Radford, Lyndon Bridgwater, Heather Bibby