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JACIII Vol.12 No.4 pp. 328-335
doi: 10.20965/jaciii.2008.p0328
(2008)

Paper:

An Integrated Algorithm for Autonomous Navigation of a Mobile Robot in an Unknown Environment

Lee Gim Hee* and Marcelo H. Ang Jr.**

*DSO National Laboratories, 20 Science Park Drive, Singapore 118230

**Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576

Received:
April 23, 2007
Accepted:
July 3, 2007
Published:
July 20, 2008
Keywords:
global path planner, local navigation method, local minima, hybrid method, integrated algorithm
Abstract

Global path planning algorithms are good in planning an optimal path in a known environment, but would fail in an unknown environment and when reacting to dynamic and unforeseen obstacles. Conversely, local navigation algorithms perform well in reacting to dynamic and unforeseen obstacles but are susceptible to local minima failures. A hybrid integration of both the global path planning and local navigation algorithms would allow a mobile robot to find an optimal path and react to any dynamic and unforeseen obstacles during an operation. However, the hybrid method requires the robot to possess full or partial prior information of the environment for path planning and would fail in a totally unknown environment. The integrated algorithm proposed and implemented in this paper incorporates an autonomous exploration technique into the hybrid method. The algorithm gives a mobile robot the ability to plan an optimal path and does online collision avoidance in a totally unknown environment.

Cite this article as:
L. Hee and M. Ang Jr., “An Integrated Algorithm for Autonomous Navigation of a Mobile Robot in an Unknown Environment,” J. Adv. Comput. Intell. Intell. Inform., Vol.12, No.4, pp. 328-335, 2008.
Data files:
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Last updated on Jan. 19, 2019