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8. Conclusions
In this paper, real time control of UUVs based on the feedback data received from a CCD camera is discussed and demonstrated using the test bed vehicle “The Twin-Burger”. From the results given in section 7, it can be seen that the vehicle had been controlled to keep the view of the cable (target) in the image. As a result, the vehicle is guided along the cable.
The algorithms developed are such that they can be implemented in small hardware systems which could be placed in pressure hulls of the underwater vehicles.
Using visual data in the feedback control loop of the UUV will increase the reliability of the UUV system.
Acknowledgements
The authors would like to thank the Ship Research Institute, Japan for providing the space for the experiment and the Biwako Research Institute for providing images for the development of the cable tracking algorithms.
References
[1] B.A.A.P Balasuriya and Tamaki Ura, "Vision Based Tracking for Unmanned Underwater Vehicles", Proc. of SICE '96, July 1996.
[2] B.A.A.P Balasuriya and Tamaki Ura, "Vision Based Object Following for Underwater Vehicles", Journal of the Society of Naval Architects of Japan, vol. 180, December 1996.
[3] Wan-Chung Lam and Tamaki Ura, "Non-Linear Controller with Switched Control Law forTracking Control of Non-Cruising AUV", Proc. of AUV96, June 1996, pp.78-85.
[4] Wan-Chung Lam and Tamaki Ura, "Non-Linear Controller of Non-Cruising AUV for Tracking 3 Dimensional Trajectory", Journal of the Society of Naval Architects of Japan, vol. 180, December 1996.
[5] Nikolaos P. Papanikolopoulos and Pradeep K. Khosla, "Adaptive Robotic Visual Tracking:Theory and Experiments", IEEE Trans. on Automatic Control, vol.38, no.3, March 1993, pp.429-445.
[6] T.Fujii,T. Ura, and Y.Kuroda,"Development of a Versatile Test-Bed 'Twin-Burger' toward Intelligent Behaviors of Autonomous Under water Vehicles", Proc. of OCEANS '93, vol.1, Victoria, 1993, pp.186-191.

 

 

 

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