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Real-time collision avoidance for redundant manipulators

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4 Author(s)
Glass, K. ; Dept. of Mech. Eng., New Mexico State Univ., Las Cruces, NM, USA ; Colbaugh, R. ; Lim, D. ; Seraji, H.

This paper presents a simple and robust approach to achieving collision avoidance for kinematically redundant manipulators at the control-loop level. The proposed scheme represents the obstacle avoidance requirement as inequality constraints in the manipulator workspace, and ensures that these inequalities are satisfied while the end-effector tracks the desired trajectory. The control scheme is the damped-least-squares formulation of the configuration control approach implemented as a kinematic controller. Computer simulation and experimental results are given for a Robotics Research 7 DOF redundant arm and demonstrate the collision avoidance capability for reaching inside a truss structure. These results confirm that the proposed approach provides a simple and effective method for real-time collision avoidance

Published in:

Robotics and Automation, IEEE Transactions on  (Volume:11 ,  Issue: 3 )

Date of Publication:

Jun 1995

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