elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Development and Realization of an autonomous driving concept for planetary vehicles

Kulkarni, Shrinivas (2008) Development and Realization of an autonomous driving concept for planetary vehicles. Diploma. DLR-Interner Bericht. DLR-IB 515-2008/13, 80 S.

[img] PDF - Registered users only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
3MB

Abstract

Challenging applications are present for the �eld of robotics even outside the laboratory conditions in the open environment. To enable the commercial exploration of the robotics, `autonomous navigation' of a robotic vehicle plays a critical role. In the recent past, there have been significant progress made towards the supervised autonomous robotic capability for remotely controlled scientific exploration of the planetary surfaces. This thesis investigates the existing driving concepts for the autonomous vehicles with emphasis on planetary applications. Navigating through an unknown environment the robot faces challenges like accurate obstacle detection and positioning of the robot. During such navigation there might be some situations, where the obstacles are of the same texture and color of the ground surface. Distinguishing the obstacles with respect to the ground surface thus becomes very difficult. To overcome this problem an approach of using three dimensional coordinates of the points is used e�ectively. Thus the thesis work focuses on use of three dimensional coordinates of the points to detect an obstacle. Some of the innovative methods used for the obstacle detection have been explained in this thesis. The positioning of the robot is done with respect to a starting point using `camera motion estimation'. This camera motion estimation is part of the `stereo vision system'. For this study work only one sensor is used i.e. stereo vision system. The focus of this thesis is on the navigation strategy based on the vision system. The various stages involved in developing this navigation strategy are explained. The necessary strategy with the related software coding have been implemented and the real time experiments are also carried out. The results of the various experiments carried out with interesting situations are also analyzed. Various failures have been observed during these experiments and the possible solutions for the future development are suggested. The developed navigation strategy is based on two basic layers, `obstacle check' and `goal check'. To incorporate any future developmental work, like addition of extra layers in the current architecture is also discussed.

Document Type:Monograph (DLR-Interner Bericht, Diploma)
Title:Development and Realization of an autonomous driving concept for planetary vehicles
Authors:
AuthorsInstitution or Email of Authors
Kulkarni, ShrinivasUni Duisburg-Essen
Date:1 April 2008
Number of Pages:80
Status:Published
Keywords:Development, Realization, autonomous, driving, planetary, vehicles, exploration, navigation
Department:Dynamics and Control
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):W - Vorhaben On-Orbit Servicing (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > Robotic Systems
Deposited By: Jessica Laskey
Deposited On:23 Jun 2008
Last Modified:12 Dec 2013 20:31

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.