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논문 기본 정보

자료유형
학술저널
저자정보
Sally El-Ghoul (Ain Shams University) Ashraf S. Hussein (Ain Shams University) M. S. Abdel Wahab (Ain Shams University) U. Witkowski (Paderborn University) U. Rückert (Paderborn University)
저널정보
Korean Institute of Information Scientists and Engineers Journal of Computing Science and Engineering Journal of Computing Science and Engineering Vol.2 No.4
발행연도
2008.12
수록면
321 - 338 (18page)

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초록· 키워드

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This paper presents a Modified Multiple Depth First Search algorithm for the exploration of the indoor environments occupied with obstacles in random distribution. The proposed algorithm was designed and implemented to employ one or a team of Khepera II mini robots for the exploration process. In case of multi-robots, the BlueCore2 External Bluetooth module was used to establish wireless networks with one master robot and one up to three slaves. Messages are sent and received via the module’s Universal Asynchronous Receiver/Transmitter (UART) interface. Real exploration experiments were performed using locally developed teleworkbench with various autonomy features. In addition, computer simulation tool was also developed to simulate the exploration experiments with one master robot and one up to ten slaves. Computer simulations were in good agreement with the real experiments for the considered cases of one to one up to three networks. Results of the MMDFS for single robot exhibited 46% reduction in the needed number of steps for exploring environments with obstacles in comparison with other algorithms, namely the Ants algorithm and the original MDFS algorithm. This reduction reaches 71% whenever exploring open areas. Finally, results performed using multi-robots exhibited more reduction in the needed number of exploration steps.

목차

1. INTRODUCTION
2. RELATED WORK
3. THE MODIFIED MULTIPLE DEPTH FIRST SEARCH (MMDFS) ALGORITHM FOR SINGLE ROBOT
4. THE MODIFIED MULTIPLE DEPTH FIRST SEARCH (MMDFS) ALGORITHM FOR A TEAM OF ROBOTS
5. COMMUNICATION PROTOCOLS
6. RESULTS AND DISCUSSIONS
7. CONCLUSION
ACKNOWLEDGEMENTS
REFERENCES

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