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Dynamic path planning for a mobile automaton with limited information on the environment

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2 Author(s)
Lumelsky, Vladimir J. ; Yale Univ., New Haven, CT, USA ; Stepanov, A.A.

The problem of path planning is studied for the case of a mobile robot moving in an environment filled with obstacles whose shape and positions are not known. Under the accepted model, the automaton knows its own and the target coordinates, and has a "sensory" feedback which provides it with local information on its immediate surroundings. Ibis information is shown to be sufficient to guarantee reaching a global objective (the target), while generating reasonable (if not optimal) paths. A lower bound on the length of paths generated by any algorithm operating with uncertainty is formulated, and two nonheuristic path planning algorithms are described. In the algorithms, motion planning is done continuously (dynamically), based on the automaton's current position and on its feedback. The effect of additional sources of information (e.g., from a vision sensor) on the outlined approach is discussed.

Published in:

Automatic Control, IEEE Transactions on  (Volume:31 ,  Issue: 11 )

Date of Publication:

Nov 1986

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