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An Advanced Anti-Slip Control Algorithm for Locomotives Under Complex Friction Conditions

Journal of Computational and Nonlinear Dynamics, 2021
The locomotive wheelsets configured with high-power AC traction motors are very prone to slip under poor friction conditions, which usually impair traction/braking efficiency.
Yunfan Yang   +4 more
semanticscholar   +1 more source

Comparative evaluation of fuel cell based powering systems for cleaner locomotives

Thermal Science and Engineering Progress, 2021
Due to the high carbon dioxide emissions added to the atmosphere from the transportation sector, it is imperative to replace current transportation powering systems with more environmentally benign alternatives. This paper provides a comparative study of
Khaled H. M. Al-Hamed, I. Dincer
semanticscholar   +1 more source

Liquid Crystal Elastomer Electric Locomotives.

ACS Macro Letters, 2020
In this letter, we present an electro-driven cylindrical actuator system composed of a bilayered liquid crystal elastomer/carbon black (LCE/CB) electro-driven soft actuator and a conductive track.
Meng Wang   +5 more
semanticscholar   +1 more source

Locomotion in caterpillars

Biological Reviews, 2014
ABSTRACTMost species of caterpillar move around by inching or crawling. Their ability to navigate in branching three‐dimensional structures makes them particularly interesting biomechanical subjects. The mechanism of inching has not been investigated in detail, but crawling is now well understood from studies on caterpillar neural activity, dynamics ...
L I, van Griethuijsen, B A, Trimmer
openaire   +2 more sources

Effects of axle load transfer on wheel rolling contact fatigue of high-power AC locomotives with oblique traction rods

International Journal of Fatigue, 2020
Severe wheel rolling contact fatigue (RCF) has been observed on two types of high-power AC locomotives with CO-CO axle arrangement and running in complicated environments in China.
Zefeng Wen, Xuesong Jin
exaly   +2 more sources

Reinforcement learning approach for optimal control of multiple electric locomotives in a heavy-haul freight train: A Double-Switch-Q-network architecture

Knowledge-Based Systems, 2020
Electric locomotives provide high tractive power for fast acceleration of heavy-haul freight trains, and significantly reduce the energy consumption with regenerative braking.
Huiyue Tang   +3 more
semanticscholar   +1 more source

Battery Electric Locomotives & Battery Tenders: Operational & Infrastructure Challenges to Widespread Adoption

, 2021
The potential use of large storage batteries to provide onboard propulsion energy for freight railroads is gaining significant attention. Even though at least 126 Battery Electric Locomotives have been tested, built and operated in the U.S. since 1920,
M. Iden
semanticscholar   +1 more source

Impedance Modeling and Mechanism Analysis of Low-Frequency Oscillation in Vehicle-Grid Coupling System Under the Mixed Operation of Locomotives

IEEE transactions on industry applications
The mixed operation of locomotives aggravates the interaction between locomotives and the traction network, resulting in the low-frequency oscillation (LFO) for the vehicle-grid coupling system.
Yi Liu   +7 more
semanticscholar   +1 more source

Investigation on the safety of 30,000-ton combined train with different lag times of slave control locomotives

Vehicle System Dynamics
To investigate the influence of the lag time in braking response of the slave control locomotives caused by the LOCOTROL wireless synchronous control system on the longitudinal impulse of the train, a 30,000-ton heavy-haul train model was established ...
Qun Ma, Wei Wei, Yuan Yao, Xinmiao Chen
semanticscholar   +1 more source

Locomotion and nightwaking

Child: Care, Health and Development, 2005
Abstractobjective  In this study we addressed the association between two major achievements of infancy: independent locomotion and ‘sleeping through the night’ .Methods  Mothers of 107 healthy infants aged between five and eight months completed a sleep questionnaire and a motor checklist.Results and Conclusions  Infants who were already crawling had ...
A, Scher, D, Cohen
openaire   +2 more sources

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