Dynamic graph-based search in unknown environments

A novel graph-based approach to search in unknown environments is presented. A virtual geometric structure is imposed on the environment represented in computer memory by a graph. Algorithms use this representation to coordinate a team of robots (or entities). Local discovery of environmental features cause dynamic expansion of the graph resulting in global exploration of the unknown environment. The algorithm is shown to have O(k@?n"H) time complexity, where n"H is the number of vertices of the discovered environment and 1=

[1]  Maja J. Mataric,et al.  Multi-robot task allocation: analyzing the complexity and optimality of key architectures , 2003, 2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422).

[2]  W. T. Tutte.  A THEOREM ON PLANAR GRAPHS , 1956 .

[3]  Brenda S. Baker,et al.  Approximation algorithms for NP-complete problems on planar graphs , 1983, 24th Annual Symposium on Foundations of Computer Science (sfcs 1983).

[4]  Maria Gini,et al.  Robotic Swarm Dispersion Using Wireless Intensity Signals , 2006, DARS.

[5]  Nobuji Saito,et al.  An algorithm for finding a short closed spanning walk in a graph , 1980, Networks.

[6]  Ryo Kurazume,et al.  An Experimental Study of a Cooperative Positioning System , 2000, Auton. Robots.

[7]  George K. Papakonstantinou,et al.  Robot Map Building by Kohonen's Self-Organizing Neural Networks , 1997 .

[8]  Wolfram Burgard,et al.  A Probabilistic Approach to Collaborative Multi-Robot Localization , 2000, Auton. Robots.

[9]  Gregory Dudek,et al.  Multi-robot collaboration for robust exploration , 2004, Annals of Mathematics and Artificial Intelligence.

[10]  Maria Gini,et al.  Distributed Autonomous Robotic Systems 7, Proceedings of the 8th International Symposium on Distributed Autonomous Robotic Systems, DARS 2006, Minneapolis, Minnesota, USA, 2006 , 2006, DARS.

[11]  Lyuba Alboul,et al.  An Approach to Multi-robot Site Exploration Based on Principles of Self-organisation , 2010, ICIRA.

[12]  Kurt Konolige,et al.  Distributed Multirobot Exploration and Mapping , 2005, Proceedings of the IEEE.

[13]  Magnus Egerstedt,et al.  Graph Theoretic Methods in Multiagent Networks , 2010, Princeton Series in Applied Mathematics.

[14]  W. T. Tutte,et al.  Bridges and Hamiltonian circuits in planar graphs , 1977 .

[15]  Hugh Durrant-Whyte,et al.  Simultaneous localization and mapping (SLAM): part II , 2006 .

[16]  Gaurav S. Sukhatme,et al.  Localization for Mobile Robot Teams: A Distributed MLE Approach , 2002, ISER.