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Real-time path planner for arm robot collision avoidance

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2 Author(s)
Puiu, D. ; Autom. Dept., Transilvania Univ. of Brasov, Brasov, Romania ; Moldoveanu, F.

The paper presents a real-time path planner for a redundant manipulator. The robot manipulator joints references positions are modified, by the control structure, when an unexpected moving obstacle is getting closer to one of the robot components (links and joints). The position of the moving objects is determined using a digital image processing system. The control system determines if the moving obstacle and the arm robot are in collision using an interference detection method based on oriented bounding boxes. When the arm robot control system detects a collision, it modifies the arm robot joints trajectories in order to increase the distance between the robot and the obstacle and, in the same time, maintain the initial trajectory of the end-effecter. Computer simulation and experimental results are given for a 7 DOF redundant arm and demonstrate the collision avoidance capability.

Published in:

System Theory, Control, and Computing (ICSTCC), 2011 15th International Conference on

Date of Conference:

14-16 Oct. 2011

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