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Seung-Jae Chon, Joon-Young Kim, Hyeung-Sik Choi and Jong-Hwa Kim
The goal of underwater docking is to safely insert an autonomous underwater vehicle (AUV) into the docking sleeve of a docking station (DS). However, AUVs frequently experience disturbances in their operating environment under motional constraints owing ...
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Ki-Beom Choo, Hyunjoon Cho, Jung-Hyeun Park, Jiafeng Huang, Dongwook Jung, Jihyeong Lee, Sang-Ki Jeong, Jongsu Yoon, Jinhun Choo and Hyeung-Sik Choi
This study focuses on faults in the thrusters of unmanned surface vehicles, which are fatal to the integrity of their missions. As for the fault conditions, the breakage of the thruster blade and the entanglement of floating objects were selected, and a ...
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Mai The Vu, Seong Han Kim, Van P. Nguyen, Nguyen Xuan-Mung, Jiafeng Huang, Dong-Wook Jung and Hyeung-Sik Choi
Underwater vehicles have capacity limits for control inputs, within which their time-optimal trajectories (TOTs) can be formulated. In this study, the fastest trajectory for the depth control of a hybrid underwater glider (HUG) was found using buoyancy e...
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Ngoc-Duc Nguyen, Hyeung-Sik Choi, Han-Sol Jin, Jiafeng Huang, Jae-Heon Lee
Pág. 135 - 146
Hybrid underwater glider (HUG) is an advanced autonomous underwater vehicle with propellers capable of sustainable operations for many months. Under the underwater disturbances and parameter uncertainties, it is difficult that the HUG coordinates with th...
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Dae-Hyeong Ji, Hyeung-Sik Choi, Sang-Ki Jeong, Ji-Youn Oh, Seo-Kang Kim, Sam-Sang You
Pág. 84 - 93
In this paper, we studied the designing and manufacturing of an underwater track vehicle (UTV) that can be operated in the underwater environment. We designed the electrical and control system for precise operation of the UTV and conduct test operation b...
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Ngoc-Duc Nguyen, Hyeung-Sik Choi and Sung-Wook Lee
This paper presents the modeling of a new ray-type hybrid underwater glider (RHUG) and an experimental approach used to robustly and adaptively control heading motion. The motions of the proposed RHUG are divided into vertical-plane motions and heading m...
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