Results 71 to 80 of about 3,964 (223)
Simple numerical calculation method of flow velocity on roof of train running in tunnel
Mechanical Engineering Journal, 2018 A pantograph mounted on a high-speed train roof is exposed to high-speed air flow while traveling, and lift force is generated in the pantograph. To ensure high current collecting performance of the pantograph, it is important to appropriately adjust the
Katsuhiro KIKUCHI +3 more
doaj +1 more source
Modeling and robust control of a high speed train pantograph
Mechanical Engineering Journal, 2015 For high-speed trains, active control of the pantograph is crucial technology to collect electrical current from the overhead contact wire. In this paper, a mathematical model of the pantograph-catenary system is developed to design a controller, and then a sliding mode controller is proposed to regulate the contact force in the presence of variation ...
Makoto YOKOYAMA +5 more
openaire +3 more sources
Rapid Coupling Prediction for Compact GNSS Arrays via Graph Transformer
Electronics Letters, Volume 61, Issue 1, January/December 2025.The design of compact GNSS antenna arrays requires rapid evaluation of mutual coupling effects, which conventional full‐wave simulations fail to deliver due to excessive computational costs. This letter proposes a graph transformer model that predicts coupling matrices in real time. By hybridizing the local perception of graph isomorphism network (GIN)
Xiangjun Li +5 more
wiley +1 more source
InfrastructuresWith the rapid development of high-speed railways, the dynamic performance of the pantograph–catenary system plays a crucial role in ensuring the safe and stable operation of trains.
Tong Xing +5 more
doaj +1 more source
IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.In addressing the issue of electromagnetic interference in railway environments, research into the coupling pathways, amplitude distribution patterns, and attenuation characteristics of such interference is crucial for identifying practical solutions. Rails, a common channel for signaling and traction power supply systems, play a pivotal role in anti ...
Shaotong Chu +2 more
wiley +1 more source
Research on Aerodynamic Noise Reduction for High-Speed Trains
Shock and Vibration, 2016 A broadband noise source model based on Lighthill’s acoustic theory was used to perform numerical simulations of the aerodynamic noise sources for a high-speed train.
Yadong Zhang +4 more
doaj +1 more source
Journal of Low Frequency Noise, Vibration and Active Control, 2021 When two electric multiple units are non-electrically connected together for improving the transport capacity in high-speed railways, double pantographs frequently operate simultaneously to decrease the current capacity on a single pantograph collector ...
Xiaobing Lu +5 more
doaj +1 more source
Availability Evaluation of Overhead Contact Lines Based on a Stochastic Colored Petri Nets Model
IET Electrical Systems in Transportation, Volume 2025, Issue 1, 2025.Due to their nonbackup characteristics and constant exposure to outdoor conditions, the performance of overhead contact lines (OCLs) will gradually degrade over time and further result in equipment defects or frequent failures. These issues significantly impact system availability and incur substantial repair costs.
Jingheng Zhou +4 more
wiley +1 more source
Chengshi guidao jiaotong yanjiu［Objective］ With the increase of train operating speed, noise levels have gradually become a critical factor restricting the development of high-speed railways.
YU Yongge +5 more
doaj +1 more source
机车电传动, 2023 Pantograph catenary arc is an important factor threatening the current-receiving quality of high-speed trains. The motion characteristics and development law of pantograph arc under low air pressure are significantly different from those under ...
XU Yue +4 more
doaj