Results 31 to 40 of about 20,271 (75)

Ship motion identification model based on enhanced Bi-LSTM

Zhongguo Jianchuan Yanjiu
ObjectiveAiming at the low prediction precision and poor adaptability of ship models based on the data-driven modeling strategy, an enhanced bi-directional long short-term memory (Bi-LSTM) model is proposed for the high-precision non-parametric modeling ...
Haozhe ZHANG, Zhibo YANG, Xuguo JIAO, Chengxing LÜ, Peng LEI   +4 more
doaj   +1 more source

Stage-induced learning-based cooperative target hunting strategy for multiple unmanned surface vehicles

Zhongguo Jianchuan Yanjiu
Objectives Aiming at the intelligent escape problem of marine target unmanned surface vehicles (USVs), this paper proposes an enhanced cooperative target hunting strategy which is designed to improve the performance of multi-USV systems in capturing ...
Xingru QU, Yuze JIANG, Feifei LONG, Rubo ZHANG, Ying GAO   +4 more
doaj   +1 more source

Ship heading and trajectory control method based on L1-GPR

Zhongguo Jianchuan Yanjiu
ObjectivesIntelligent ships at sea are influenced by environmental interference, and the influence of the uncertainty of model parameters leads to the problem of low ship motion control accuracy, so it is necessary to improve the resistance of the ship's
Shijie LI, Jiawei HE, Jialun LIU, Taixu LIU, Chengqi XU   +4 more
doaj   +1 more source

A neural dynamics model prediction-based adaptive control system for AUV formation control

Zhongguo Jianchuan Yanjiu
ObjectivesThis paper seeks to provide a solution for the formation control issue that arises when autonomous underwater vehicles (AUVs) are subjected to interference from obstacles and complex ocean currents. Methods To tackle the issue of AUV hysteresis
Jiwen ZHANG, Bo XU, Chuyan WANG, Zhaoyang WANG   +3 more
doaj   +1 more source

Taxonomic and functional analyses of intact microbial communities thriving in extreme, astrobiology-relevant, anoxic sites. [PDF]

Microbiome, 2021
Bashir AK, Wink L, Duller S, Schwendner P, Cockell C, Rettberg P, Mahnert A, Beblo-Vranesevic K, Bohmeier M, Rabbow E, Gaboyer F, Westall F, Walter N, Cabezas P, Garcia-Descalzo L, Gomez F, Malki M, Amils R, Ehrenfreund P, Monaghan E, Vannier P, Marteinsson V, Erlacher A, Tanski G, Strauss J, Bashir M, Riedo A, Moissl-Eichinger C.   +27 more
europepmc   +1 more source

Near-surface motion modeling and wave-following control of AUVs

Zhongguo Jianchuan Yanjiu
ObjectiveTo address the covert communication requirements of autonomous underwater vehicles (AUVs), this study proposes a near-surface communication mode equipped with a foldable antenna.MethodsUtilizing strip theory to predict the wave forces of regular
Yi WANG, Xuan WANG, Jianyao WANG, Xiangheng LI   +3 more
doaj   +1 more source

Design of AUV controller based on improved PPO algorithm

Zhongguo Jianchuan Yanjiu
ObjectiveIn order to improve the robustness of autonomous underwater vehicle (AUV) controllers to environment modeling errors, this paper proposes a reinforcement learning control strategy that introduces contextual information and a course-learning ...
Desheng XU, Chunhui XU
doaj   +1 more source

Distributed three-dimensional affine formation maneuver control for multiple autonomous underwater vehicles

Zhongguo Jianchuan Yanjiu
ObjectivesTo improve the ability of autonomous underwater vehicle (AUV) formations to perform tasks in complex obstacle scenarios, a distributed three-dimensional affine formation shape maneuver control method is proposed for multi-AUV formations ...
Mingqi YAO, Lin YU, Kai GUO, Yu LU, Lei QIAO   +4 more
doaj   +1 more source

Multi-objective Path Planning for AUVs Based on Improved Whale Optimization Algorithms and Fluid Disturbance Algorithms

水下无人系统学报
To address the challenges of low path planning efficiency for autonomous undersea vehicle(AUV) in multi-target environments, as well as the limitations of the traditional whale optimization algorithm(WOA) in terms of susceptibility to local optima and ...
Yuhong MA, Wen PANG, Daqi ZHU
doaj   +1 more source

Fixed Depth Control Strategy for Remotely Operated Vehicle Based on Improved Model Predictive Control Algorithm

水下无人系统学报
To address the issue of poor depth control stability in remotely operated vehicles(ROVs) with cables due to external disturbances in complex marine environments, a composite control strategy based on an improved model predictive control(MPC) was proposed.
Shuo YANG, Honghui WANG, Xinyu LIU, Xin FANG, Guanghao LI, Guijie LIU   +5 more
doaj   +1 more source