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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Navigation
verfasst von : Peter Corke
Erschienen in: Robotics, Vision and Control
Verlag: Springer Berlin Heidelberg
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Robot navigation is the problem of guiding a robot towards a goal. The human approach to navigation is to make maps and erect signposts, and at first glance it seems obvious that robots should operate the same way. However many robotic tasks can be achieved without any map at all, using an approach referred to as
reactive navigation
. For example heading towards a light, following a white line on the ground, moving through a maze by following a wall, or vacuuming a room by following a random path. The robot is reacting directly to its environment: the intensity of the light, the relative position of the white line or contact with a wall. Grey Walter’s tortoise Elsie from page 61 demonstrated “life-like” behaviours - she
reacted
to her environment and could seek out a light source. Today more than 5 million Roomba vacuum cleaners are cleaning floors without using any map of the rooms they work in. The robots work by making random moves and sensing only that they have made contact with an obstacle.