Results 51 to 60 of about 454,537 (209)

Hardware in the Loop Test-Rig for Identification and Control Application on High Speed Pantographs

open access: yesShock and Vibration, 2004
Trains current collection for traction motors is obtained by means of a sliding contact between the overhead line (OHL) and the collector strips mounted on the pantograph head.
A. Collina   +3 more
doaj   +1 more source

Dual‐Frequency Piezoelectric Vibration Energy Harvester for IoT‐Based Real‐Time Freight Train Health Monitoring in Mongolia

open access: yesIET Intelligent Transport Systems, Volume 20, Issue 1, January/December 2026.
This study evaluates the potential of piezoelectric vibration energy harvesting to power IoT nodes for real‐time health monitoring of the Mongolian railway. Triaxial vibration data were collected at 500 Hz over a 400 km freight route under loaded and unloaded conditions using a custom ESP32‐S3 + MPU9250 system, and dominant frequencies were extracted ...
Bumduuren Pumbuurei   +5 more
wiley   +1 more source

Active Power Filter‐Based Low‐Frequency Ripple Power Suppression of the DC‐Link in Railway Traction Systems

open access: yesIET Power Electronics, Volume 19, Issue 1, January/December 2026.
This article presents an active power filtering control method to suppress ripple power in the DC‐link of railway traction systems, including both the inherent second‐order ripple of single‐phase rectifiers and additional frequency ripples introduced by the pantograph–catenary arc.
Wei Wang   +5 more
wiley   +1 more source

The walking robot project [PDF]

open access: yes, 1991
A walking robot was designed, analyzed, and tested as an intelligent, mobile, and a terrain adaptive system. The robot's design was an application of existing technologies.
Bennett, M.   +3 more
core   +1 more source

Pantograph arc location estimation using resonant frequencies in DC railway power systems [PDF]

open access: yes, 2021
Pantograph arcing in electrified railway systems not only reduces the power collection quality of a locomotive but can also damage pantograph strips and overhead lines (OHLs).
Fan, Fulin   +3 more
core   +1 more source

Classifying Power Quality Issues in Railway Electrification Systems Using a Nonsubsampled Contourlet Transform Approach

open access: yesEngineering Reports, Volume 7, Issue 8, August 2025.
Railway electrification systems indeed have unique challenges due to variable power demand and dynamic train operations. Power quality (PQ) monitoring for high‐speed trains (HSTs) is essential to guarantee the effectual and unfailing operation of the ESs.
Pampa Sinha   +6 more
wiley   +1 more source

A New Method for Pantograph-Catenary Arc Detection Based on Acoustic Signals

open access: yesChengshi guidao jiaotong yanjiu
ObjectiveTo enhance the accuracy and precision of arc detection in urban rail transit and address the limitations of existing arc detection methods such as electrical and optical approaches, it is necessary to develop new pantograph-catenary arc ...
Zixian YANG   +3 more
doaj   +1 more source

Research on Control of Short EMU Reconnection Passing Neutral Section

open access: yes机车电传动, 2021
In order to solve the problem that the reconnection of CRH6F-A/CRH6A-A short intercity EMU can not meet the requirements of the length of neutral section of domestic lines, the reconnection control method of short intercity EMU was studied,and the ...
Wantao XU   +4 more
doaj  

Rapid Coupling Prediction for Compact GNSS Arrays via Graph Transformer

open access: yesElectronics 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

Simulation Study on Arc Temperature of Urban Rail DC Pantograph-Catenary and Arc Ablation of Contact Line

open access: yesMachines
The high temperature generated by the DC pantograph-catenary arc of urban rail systems will aggravate the wear of the pantograph-catenary system. When the ablation intensifies, it will lead to disconnection accidents on the contact line.
Xiaoying Yu   +5 more
doaj   +1 more source

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