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Task decomposition for a multilimbed robot to work in reachable but unorientable space

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2 Author(s)
Su, C. ; Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA ; Zheng, Y.F.

Robot manipulators installed on legged mobile platforms are suggested for enlarging robot workspace. To plan the motion of such a system, the arm-platform motion coordination problem is raised, and a task decomposition is proposed to solve the problem. A given task described by the destination position and orientation of the end effector is decomposed into subtasks for arm manipulation and for platform configuration, respectively. The former is defined as the end-effector position and orientation with respect to the platform, and the latter as the platform position and orientation in the base coordinates. Three approaches are proposed for the task decomposition. The approaches are also evaluated in terms of the displacements, from which an optimal approach can be selected

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Robotics and Automation, IEEE Transactions on  (Volume:7 ,  Issue: 6 )