Development of Testbed AUV for Formation Control and its Fundamental Experiment in Actual Sea Model Basin

2021 ◽  
Vol 33 (1) ◽  
pp. 151-157
Author(s):  
Akihiro Okamoto ◽  
◽  
Motonobu Imasato ◽  
Shunka C. Hirao ◽  
Hidenori Sekiguchi ◽  
...  

The formation control of multiple autonomous underwater vehicles (AUVs) is increasingly becoming a vital factor in enhancing the efficiency of ocean resources exploration. However, it is currently difficult to deploy such a package of AUVs for operation at sea because of their large size. The aim of our study is to create a demonstration system for formation control algorithms using actual hardware. To implement a prototype system, we developed a testbed AUV usable in a test basin and performed a simple formation control test in the Actual Sea Model Basin of the National Maritime Research Institute, Japan. Two AUVs, the simulated “virtual” leader and the developed “real” follower, communicate through an acoustic link and hence cruise to maintain a constant distance between them. Tests for more sophisticated formation control algorithms will be enabled using the system; consequently rapid implementation at sea will be realized.

2021 ◽  
Vol 9 (3) ◽  
pp. 277
Author(s):  
Isaac Segovia Ramírez ◽  
Pedro José Bernalte Sánchez ◽  
Mayorkinos Papaelias ◽  
Fausto Pedro García Márquez

Submarine inspections and surveys require underwater vehicles to operate in deep waters efficiently, safely and reliably. Autonomous Underwater Vehicles employing advanced navigation and control systems present several advantages. Robust control algorithms and novel improvements in positioning and navigation are needed to optimize underwater operations. This paper proposes a new general formulation of this problem together with a basic approach for the management of deep underwater operations. This approach considers the field of view and the operational requirements as a fundamental input in the development of the trajectory in the autonomous guidance system. The constraints and involved variables are also defined, providing more accurate modelling compared with traditional formulations of the positioning system. Different case studies are presented based on commercial underwater cameras/sonars, analysing the influence of the main variables in the measurement process to obtain optimal resolution results. The application of this approach in autonomous underwater operations ensures suitable data acquisition processes according to the payload installed onboard.


2014 ◽  
Vol 641-642 ◽  
pp. 1264-1268
Author(s):  
Zi Qi Lin ◽  
Yong Jie Pang ◽  
Da Peng Jiang

While the single AUV is sometimes unable to meet the complex and difficult tasks demand, the advantages of the multiple autonomous underwater vehicles (MAUV) system was proposed. Several MAUV formation methods were studied and master-slave collaborative formation method was focused. The law and algorithm of master-slave formation control was designed and analyzed. Representative formations for different tasks were proposed and the advantages and disadvantages were discussed.


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