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Online motion planning for robotic arms: new approach based on the reduction of the search space

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4 Author(s)
Mediavilla, M. ; Dept. de Ingenieria de Sistemas y Autom., Valladolid Univ., Spain ; Gonzalez, J.L. ; Fraile, J.C. ; Peran, J.R.

This paper presents a new method for online path planning for robotic arms in dynamic environments. Most online path planning methods are based on local algorithms that end up being inefficient due to their lack of global information (local minima problems). The method presented in this paper avoids local minima by using a two stage framework. The robots react to dynamic environments using a local and reactive planning method restricted to a subset of its configuration space. Since the subset has few degrees of freedom the computational cost of the online stage is very low. An off-line stage chooses the subset of the configuration space that minimizes the probability of blockades and inefficient motions.

Published in:

Robotics and Automation, 2002. Proceedings. ICRA '02. IEEE International Conference on  (Volume:4 )

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