Results 41 to 50 of about 10,385 (170)

A review of strong electromagnetic environment protection technology for ship equipment

open access: yes, 2023
In view of various threats of strong electromagnetic environment to ship information equipment under electromagnetic space countermeasures and the requirement of electromagnetic protection, the mechanism of strong electromagnetic environment effect and ...
Shengquan ZHENG   +5 more
core   +1 more source

Adaptive neural control for marine autonomous surface ships in cross-water scenarios

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveAn adaptive neural control (ANC) scheme with specified performance is proposed for the tracking control of marine autonomous surface ships (MASS) subject to uncertain model parameters and unknown external environmental disturbances in cross ...
Xiang YE   +3 more
doaj   +1 more source

Parameter identification of unmanned surface vehicle MMG model based on an improved extended Kalman filter

open access: yesZhongguo Jianchuan Yanjiu
ObjectivesTo construct an accurate MMG (mathematical model group) model for a water-jet propulsion unmanned surface vehicle, the traditional extended Kalman filter algorithm and improved extended Kalman filter algorithm are combined with the real-world ...
Pengbo SUN   +4 more
doaj   +1 more source

Numerical research on control of longitudinal motion of ship in waves by T-foil

open access: yes, 2018
[Objectives] A T-foil with an active control system can provide higher lift force and improve the seakeeping of a ship. It is necessary to calculate the anti-vertical motion effect with the different control signals.[Methods] The motion responses of the ...
ZONG Zhi, JIANG Yichen, SUN Yifang
core   +1 more source

Prediction of ship maneuvering motion in regular wave with gray-box modelling

open access: yesZhongguo Jianchuan Yanjiu
ObjectivesAiming at the requirements of the real-time and accurate prediction of ship maneuvering motion, this paper investigates the prediction of ship maneuvering motion in regular waves using gray-box modelling to improve the accuracy.
Yang HAN   +5 more
doaj   +1 more source

Linear time-domain strip method for ship motion prediction

open access: yes, 2019
[Objectives] In order to study the nonlinear strip method for prediction of ship motions in waves, this paper develops a linear time-domain strip method to make a preliminary exploration.[Methods] Under the assumptions of strip theory,the boundary ...
ZHANG Yahui, MA Shan, DUAN Wenyang
core   +1 more source

Adaptive online modeling of ship maneuvering motion based on error monitoring

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveAiming to address the problem of model inaccuracy caused by ship dynamic changes during actual navigation, this study proposes an adaptive online modeling method for ship maneuvering motion based on an error monitoring mechanism.
Yaohui YU   +4 more
doaj   +1 more source

Application of hull form knowledge graph method in design of Yangtze River bulk cargo ship [PDF]

open access: yes
ObjectiveAiming at the complexity of the navigation environment for shipping on the Yangtze River, as well as the high energy consumption and serious pollution of some ship types, there is an urgent need to carry out research on green and intelligent ...
Lüge XIAO   +4 more
core   +1 more source

Ship global path planning based on improved DQN algorithm

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveIn order to improve the economy and safety of ship navigation path in actual sea environment, this paper proposes a ship global path planning method with an improved Deep Q-Network (DQN) algorithm.MethodFirst, a prioritized experience replay ...
Wei GUAN   +3 more
doaj   +1 more source

Application of an improved ant colony algorithm based on unevenly distributed pheromone and multi-objective optimization in path planning for unmanned surface vehicles

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveTo address the challenges of path planning for unmanned surface vehicles in complex waters, this paper proposes an improved ant colony optimization(ACO)algorithm based on uneven distributed pheromone and multi-objective optimization.MethodsFirst,
Guobing XIE   +4 more
doaj   +1 more source

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