Results 31 to 40 of about 10,385 (170)

Precise path following of underactuated ship based on neurodynamic optimization and model predictive control

Zhongguo Jianchuan Yanjiu
ObjectiveThe traditional model predictive control method employs a repeated online optimization approach, resulting in a high computational burden for underactuated ship path-following predictive controller.
Junqiao SHI, Cheng LIU, Weili GUO, Ting SUN, Xuegang WANG, Feng XU   +5 more
doaj   +1 more source

Near-field acoustic reconstruction method based on three-dimensional N-shaped convolution neural network and frequency focal-KH regularization

Zhongguo Jianchuan Yanjiu, 2023
ObjectivesLow sampling rates on reconstruction surfaces cause high reconstruction error in near-field acoustic holography. Therefore, a deep learning-based approach which is applicable to planar sound sources and high-precision reconstruction with low ...
Yuyang JI, Deyu WANG
doaj   +1 more source

Data-driven ship trajectory tracking control method

Zhongguo Jianchuan Yanjiu
ObjectiveAiming at the problems of unknown ship model parameters and external disturbance and servo constraints, this paper proposes a method for the data-driven online identification of ship parameters and iterative analytical calculation of the optimal
Yong XIONG, Siwen ZHOU, XianFei WANG, Zhiyuan LYU   +3 more
doaj   +1 more source

Investigation on welding residual stress and vibration characteristics of ring-stiffened cylindrical shell

Zhongguo Jianchuan Yanjiu, 2023
ObjectiveThis study investigates complex welding residual stress and its effect on the vibration characteristics of a ring-stiffened cylindrical shell.MethodsFusion welding with carbon dioxide as the shield gas is employed to finish the welding of a ring-
Jiangchao WANG, Xiangfei CHEN, Yexing NIU, Shizhong DU, Chaonan SHEN   +4 more
doaj   +1 more source

CFD simulation of ship turning motion in waves

, 2019
[Objectives] The ship turning motion can reflect the steerability of the ship during navigation and is closely related to the ship navigation safety.[Methods] In this paper, the direct numerical simulation of the free turning motion of the standard ship ...
Wang Jianhua, Wan Decheng
core   +1 more source

Adaptive surge control of variable-mass unmanned surface vehicle based on super-twisting sliding mode observation

Zhongguo Jianchuan Yanjiu
ObjectiveThis paper presents a novel approach to the precise control of variable mass unmanned surface vehicles (USVs) during payload deployment tasks, addressing the control challenges caused by unpredictable variations in both mass and draught.
Zhaokun YAN, Guanyu YANG, Hongdong WANG
doaj   +1 more source

Design optimization of blade structure for inertial stage of diesel engine intake filter

Zhongguo Jianchuan Yanjiu, 2023
ObjectiveAn optimal design scheme for the inertial stage structure of the diesel engine intake filter is proposed, in order to meet the requirements of high separation efficiency and low resistance loss at the same time.MethodsFirst, taking the inertial ...
Xingwei WU, Jie GUO, Qiufeng SUN, Yuancheng LIU   +3 more
doaj   +1 more source

Analysis on nonlinear wave loads of a 20 000 TEU container ship based on IORM [PDF]

ObjectiveThe aim of this paper is to study the influence of wave height on nonlinear wave loads on ships.MethodsA 20000 TEU container ship is selected as the research object.
Jingmiao MENG, Peng YANG, Jincheng LI, Jingxi LIU   +3 more
core   +1 more source

Fishing vessel track-keeping control based on closed-loop gain shaping algorithm under rough sea conditions

Zhongguo Jianchuan Yanjiu
ObjectiveIn order to solve the track-keeping problem of a fishing vessel under rough sea conditions, a separated track-keeping controller is proposed.MethodsThe nonlinear feedback method is used to improve the closed-loop gain shaping algorithm, and an ...
Jianghua SUI, Teer GUO, Chunyu SONG
doaj   +1 more source

Degaussing power supply energy feedback control strategy for supercapacitors and lithium batteries

Zhongguo Jianchuan Yanjiu, 2023
ObjectivesIn order to make the energy in the degaussing coil feed back to the degaussing power supply and improve the energy utilization rate, a degaussing power supply control strategy is proposed with a hybrid supercapacitor and lithium battery power ...
Weibo LI, Kang PENG, Maojie ZHANG, Zhiming PENG, Hao ZHANG   +4 more
doaj   +1 more source