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Keywords: disturbance
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Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-330
..., 2017). The samples taken are short and cannot guarantee low disturbance and no pollution. It is quite dangerous in harsh environments. At present, the traditional samplers in the world are all without power source, which can only meet the acquisition of sediment samples, and the efficiency is low. Due...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-231
.... In the sea area where the USV is used, there are disturbances such as wind, current, waves, which make it difficult to maintain the position. To solve this problem, we devised a position control method that dynamically adds correction inputs using a neural network. INTRODUCTION We have been studying...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-235
... neural network controller zhang underwater cleaning robot thruster matrix marine transportation machine learning denote artificial intelligence disturbance allocation method vector rbf neural network thrust allocation method engineering pseudo-inverse method wang rbfnn node...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-056
... root subsea system coefficient wind speed rotation matrix offshore wind turbine turbulent wind disturbance ABSTRACT The work studies the lifting of offshore wind turbine blade in turbulent wind. First, a 6-DOF system for the single blade is developed. Then, the work gives a closed-loop...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-298
... uncertainties, environmental disturbances, input saturation, and output constraints. The guided DP tracking control problem is first addressed based on reference filters. Then, the NN technology and robust term are fused into vectorial backstepping procedure to realize the adaptability to uncertainties...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-009
... mining vehicle deep-sea mining vehicle plate sinkage displacement interaction metals & mining sinkage simulation numerical simulation disturbance dynamic response characteristic formula different size pressure-sinkage model Proceedings of the Thirty-second (2022) International Ocean...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2164
... SAMPLING AND PULL-UP TEST (S&PUT) Fig. 1 compares the concept of S&PUTs and that of standard penetration tests (SPTs) which are most widely used for geotechnical investigations. The basic concept of these two test methods is identical in that, both sampling of disturbed soil samples and sounding...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-4176
... and complex environmental-induced disturbances, the estimation process contains a kinematic curvilinear motion model that describes vessel motions. The estimated result can help ship navigators or onboard computers to well comprehend present vessel maneuvering conditions. Besides, it can also serve...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1134
... control law. Besides; in order to achieve energy-efficient X rudder allocation; a multi-objective optimization method is proposed. Moreover; the rudder error dynamics is considered and compensated by rudder error disturbance observer. Finally; comparative numerical simulations are carried out...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1139
... of the underwater flexible manipulator system is the adaptive law of neural network (NN) is introduced to solve the a complex fusion of hydrodynamics and flexible multi-body dynamics. unknown disturbance. To further suppress the residual vibration, an The combination of complex water environment and flexible...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1141
... small rov electrical industrial apparatus thruster motion characteristic international ocean artificial intelligence teaching data real-time modeling prediction accuracy machine learning deep learning polar engineering conference disturbance mother ship lstm motion control Proceedings...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2106
... production logging cable monitoring fiber production control upstream oil & gas detection disturbance fibre optic acoustic sensing perturbation reservoir surveillance acoustic sensing fibre application production monitoring loudspeaker cable frequency higher frequency dts...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3274
... general layout to measure and and 2 plans of breakwater length (300m and 150m). Based on the wave determine the wave disturbance in the port, the movements, data statistical analysis together with the measured test results of the mooring forces of vessels moored at the berths, and to estimate wave...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1110
...ABSTRACT ABSTRACT Being one of the most challenging technologies in deep sea mining system, nodules collecting process near seabed is paid great attention because it will directly influence the collecting efficiency and seafloor disturbance. Two models of nodule pick-up devices, namely suck...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1108
...ABSTRACT ABSTRACT Nodule pick-up methods used in hydraulic collecting for deep sea mining have significant effects on pick-up efficiency and environmental disturbance. In this paper, three kinds of nodule pick-up methods are investigated and compared in the differences between collecting...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2107
... vehicles (BUVs) are propelled by undulatory fins for high mobility in complex underwater environments. Moreover, high stability, low noise, and small environmental disturbance are the advantages of biomimetic underwater vehicles compared with traditional underwater vehicles. A variety of biomimetic...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2109
...ABSTRACT ABSTRACT In this paper, a fuzzy auto disturbance rejection control is proposed for the UAT (underwater auto trolley) based on fuzzy observer and fuzzy controller, which have an obvious advantage compare to ADRC. Considering the disturbance, accuracy and nonlinearity for the UAT system...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2110
...ABSTRACT ABSTRACT This paper proposed a double-loop sliding mode controller with a nonlinear disturbance observer for the longitudinal motion control of ARVs. A nonlinear disturbance observer is designed to estimate and compensate the external disturbances and system uncertainties. The globally...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-217
... artificial intelligence disturbance mode controller upstream oil & gas underwater vehicle loop controller engineering csmc cable depth control controller stability rov machine learning dobdsmc subsea system interference remotely operated vehicle ocean engineering...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-460
..., Shanghai Jiao Tong University Shanghai, China Shanghai, China ABSTRACT Autonomous motion control of USVs, especially in complex marine conditions, is always a fundamental problem. Conventional methods consider the USV hydrodynamic model and the influences of environmental disturbance separately. However...

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