Results 71 to 80 of about 114,365 (163)
机车电传动Current diesel-hydraulic/hydrodynamic drive systems for tamping and stabilizing vehicles suffer from high energy consumption, lagging torque response, low working efficiency, and inconvenient maintenance.
MA Zhanchuan
doaj
Hydroxylated Rotenoids Selectively Inhibit the Proliferation of Prostate Cancer Cells. [PDF]
J Nat Prod, 2020 Russell DA +8 more
europepmc +1 more source
Effects of flexible pantograph modeling on pantograph-OCS interaction and fatigue characteristics
机车电传动For frequent cracking of pantograph upper arm rod in its service, the pantograph-OCS coupled method of multi-rigid-body or lumped-mass model is mainly used for analysis.
ZHANG Shun, CHENG Yao, WEI Haifei
doaj
, 2017 Référence CAA86033806 Intitulé Musée d’Orsay Émission 20h Dates extrêmes 01/12/1986 Niveau de description pièce Importance matérielle 2 min 48 s Nom du producteur TF1 Historique de la conservation Le fonds est conservé à l’INA ...
mjenner
core
Data and model driven dynamic stiffness testing method for rolling bearings and experimental study
机车电传动The dynamic stiffness of traction motor bearings directly affects the dynamic performance and operational stability of rail transit rotor systems.
LI Yeteng +4 more
doaj
, 2019 Référence CAA85101635 Intitulé École photo Arles Émission Treize heures Dates extrêmes 05/07/85 Niveau de description Pièce Importance matérielle 1min56s Nom du producteur TF1 Historique de la conservation La pièce est conservée à l’INA.
fchiffoleau
core
Review of key technologies and research trends for hydrogen fuel cell hybrid locomotives
机车电传动As an emerging energy source, hydrogen offers renewability, high energy density, and convenient storage, supporting its widespread application in the field of transportation.
GAO Haoran +6 more
doaj
Design of a permanent magnet direct-drive traction motor for torpedo cars
机车电传动To address the issues of low system efficiency and complex structure in traditional asynchronous systems for torpedo cars in the metallurgical industry, this paper proposes a scheme using a direct-drive permanent magnet synchronous motor (D-PMSM) that is
PANG Cong, ZHANG Yan, NI Wei
doaj
Research on impact of potential insulation faults in variable frequency motors on voltage waveforms
机车电传动To investigate potential fault prediction methods for variable frequency motors, this paper takes a traction motor driven by a two-level frequency converter as the research object, and studies the influence rule of different insulation resistance values ...
LIU Guanfang +4 more
doaj
机车电传动To promote efficient utilization of regenerative braking energy in urban rail transit, this paper proposes a capacity allocation method for a hybrid regenerative braking energy utilization system that combines energy storage and energy feedback, and ...
GENG Xiaotong +3 more
doaj