Results 61 to 70 of about 3,423 (222)

Integrated scheduling of gantry cranes, container trucks and yard cranes in on‐dock railway operation areas at multimodal container ports

IET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.
This paper investigates an integrated scheduling problem for gantry cranes, container trucks and yard cranes in on‐dock railway operation areas at sea‐rail container ports. This paper proposes an integer programming model using the space‐time‐state network and develops a reformulation‐then‐optimization solution approach.
Tian Xia, Li Wang, Qin Zhang, Jing‐Xin Dong, Dong‐Ping Song, Xiaoning Zhu   +5 more
wiley   +1 more source

LiDAR Data-Driven Deep Network for Ship Berthing Behavior Prediction in Smart Port Systems

Journal of Marine Science and Engineering
Accurate ship berthing behavior prediction (BBP) is essential for enabling collision warnings and support decision-making. Existing methods based on Automatic Identification System (AIS) data perform well in the task of ship trajectory prediction over ...
Jiyou Wang, Ying Li, Hua Guo, Zhaoyi Zhang, Yue Gao   +4 more
doaj   +1 more source

Prescribed Performance Ship Tracking Control With a Novel Predefined‐Time Performance Function

IET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.
A hyperbolic sine function is used to construct a novel predefined‐time convergent prescribed performance function. This algorithm introduces a set of new predefined standards for time convergence assessment based on gamma functions and Riemann zeta functions.
Han Xue, Xiangtao Wang
wiley   +1 more source

Berthing Trajectory Tracking of Underactuated Surface Vehicle Based on NMPC and Position Estimation

IEEE Access
In order to realize waypoint-based automatic berthing alongside or astern, a generation algorithm of dynamic virtual ships is proposed to guide the underactuated surface vehicle (USV). In this paper, a nonlinear model predictive control (NMPC) problem is
Zuxin Wu, Baigang Zhao, Xu Han, Di Lu
doaj   +1 more source

NASA MSFC hardware in the loop simulations of automatic rendezvous and capture systems [PDF]

Two complementary hardware-in-the-loop simulation facilities for automatic rendezvous and capture systems at MSFC are described. One, the Flight Robotics Laboratory, uses an 8 DOF overhead manipulator with a work volume of 160 by 40 by 23 feet to ...
Bryan, Thomas C., Naumann, Charles B., Sutton, William, Tobbe, Patrick A.   +3 more
core   +1 more source

A Systematic Study On Automatic Berthing Control (1st Report)

Journal of the Society of Naval Architects of Japan, 1987
An architecture is proposed for an expert system for automatic berthing control. It is designed to consist of a knowledge base and four subsystems, namely, subsystems for planning, plan executing, knowledge management and berthing control. The knowledge base shared by all subsystems contains production rules, most of which are based on the experience ...
Takeo Koyam, Jin Yan, Jin Kui Huan
openaire   +2 more sources

A Reinforcement Learning‐Based AGV Scheduling for Automated Container Terminals With Resilient Charging Strategies

IET Intelligent Transport Systems, Volume 19, Issue 1, January/December 2025.
This study innovatively proposes an AGV scheduling model that considers a resilient adaptive charging strategy. A a reinforcement learning‐based AGV scheduling method which can efficiently solve the problem is proposed. Sensitivity analysis is conducted based on a real large‐scale automated terminal in Pearl Delta River (PDR) region of Southern China ...
Shaorui Zhou, Yeyi Yu, Min Zhao, Xiaopo Zhuo, Zhaotong Lian, Xun Zhou   +5 more
wiley   +1 more source

Validation of Atmospheric Ducts Inversion Using Automatic Identification System Signals at Sea

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
In order to verify the feasibility of atmospheric duct inversion method using automatic identification system signal in the actual sea area, a sea experiment was carried out. The results show that there is little difference between the inverted duct parameters and the true duct parameters, which verifies the feasibility of using the automatic ...
Wenlong Tang, Hui Hu, Shangfu Liu, Bin Tian   +3 more
wiley   +1 more source

Event-sampled adaptive neural network automatic berthing control of underactuated vessels under malicious cyber attacks

Zhongguo Jianchuan Yanjiu
ObjectiveThis study addresses the adaptive automatic berthing control problem for underactuated vessels, considering both internal/external uncertainties and false data injection (FDI) attacks.
Chun LI, Guibing ZHU, Qiang ZHANG
doaj   +1 more source

NASA Automated Rendezvous and Capture Review. Executive summary [PDF]

In support of the Cargo Transfer Vehicle (CTV) Definition Studies in FY-92, the Advanced Program Development division of the Office of Space Flight at NASA Headquarters conducted an evaluation and review of the United States capabilities and state-of-the-

core   +1 more source