Results 91 to 100 of about 454,537 (209)
Statistical characterization of the 2.45 GHz propagation channel aboard trains [PDF]
, 2015 The propagation channel aboard trains is investigated with reference to the propagation path loss within cars, the delay spread and the coherence bandwidth.
Liccardo, A. +4 more
core +1 more source
Pantograph-Catenary Relation of Urban Rail Transit Lines under Catenary Iced Condition
Chengshi guidao jiaotong yanjiu［Objective］ Under the condition of ice forming on catenary surface (hereinafter referred to as ′iced condition′), the normal current collection of train pantograph is disrupted.
ZHAO Haibo, ZHOU Jiaming, ZHANG Shuai
doaj +1 more source
Actuators for a space manipulator [PDF]
The robotic manipulator can be decomposed into distinct subsytems. One particular area of interest of mechanical subsystems is electromechanical actuators (or drives). A drive is defined as a motor with an appropriate transmission.
Brunson, P., Chun, W.
core +1 more source
IOP Conference Series: Materials Science and Engineering, 2018 Running efficiency of electrified railway is restricted seriously by arcing between pantograph and overhead line system. Since the frequency of arcing happens can reflect the contact-loss rate between pantograph and catenary system, the qualitative ...
Xiaoying Yu, H. Su
semanticscholar +1 more source
Chengshi guidao jiaotong yanjiuObjectiveIn order to reduce abnormal wear and pantograph-catenary separation caused by excessive or insufficient contact pressure, it is necessary to study the influence of various pantograph-catenary parameters on current collection quality and propose ...
Zehua CHENG +6 more
doaj +1 more source
Fast Optimization of the Installation Position of 5G-R Antenna on the Train Roof
Applied SciencesIn this paper, a prediction model of the coupling coefficient based on a multi-module neural network (MMNN) is developed to quickly optimize the installation position of the roof antenna of the 5G-Railway (5G-R) communication system, so as to improve the
Yu Bai, Jie Ren, Yinghong Wen
doaj +1 more source
Research and application of diagnosis methods and devices for urban rail traction systems [PDF]
Railway SciencesPurposeWith the deepening integration of rail transit systems–encompassing urban rail, regional railways, trunk lines and medium-low capacity transportation–the four-network integration imposes higher demands on operation and maintenance systems ...
Kan Liu +4 more
doaj +1 more source
The Transactions of The Korean Institute of Electrical Engineers, 2014 Quality criteria for interaction between a pantograph and overhead contact wire is a most important requirement to assess of the performance for the current collection system. Interaction performance between pantograph and catenary system is subject to approval by the infrastructure manager when a new design and contraction of overhead contact line and
Young Park +5 more
openaire +2 more sources
Prognostics and health management for an overhead contact line system - A review [PDF]
, 2017 The railway industry in European countries is standing a significant competition from other modes of transportation, particularly in the field of freight transport.
Brahimi, Mehdi +3 more
core +2 more sources
Chengshi guidao jiaotong yanjiu［Objective］ Since the metro system suffers from abnormal wear problem of contact wires, it is necessary to explore the data correlation degree between the key data of the pantograph catenary (PC) system and the contact line wear thickness.
GUO Yingqiang, QI Wenyan
doaj +1 more source