Results 41 to 50 of about 39,029 (305)

Comparison of Electrical Load Performance betweenSS4B and HXD2 Electric Locomotive

open access: yes机车电传动, 2014
HXD2 and SS4B were selected as the representative of AC drive and DC drive electric locomotive respectively. Based on theactual measured data, their electrical load performance were compared in four aspects, i.e. working principle, power factor, harmonic
WANG Shi-shan, WU Ming-li, XUE Jiao
doaj  

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

Porous Hybrid Soft Actuators From Liquid Crystal Networks and Lyotropic Chromonic Liquid Crystal Templated Hydrogels

open access: yesAdvanced Materials, EarlyView.
The graphic illustrates the design of a hybrid bilayer composed of a liquid crystal hydrogel (LCH) and a liquid crystal network (LCN). The figure highlights the magnetic alignment of the chromonic hydrogel and the thermal‐responsive actuation of the LCN along with the LCH when both layers are aligned or misaligned, enabling programmable, light‐driven ...
Ramón Santiago Herrera Restrepo   +13 more
wiley   +1 more source

Technology Comparison of HXD2 and HXD2B LocomotiveElectric Drive System

open access: yes机车电传动, 2013
Basic situation of the two harmonic series electric locomotive introduced by Datong Electric Locomotive Co., Ltd. was described. Technology parameter of the locomotives was analyzed, and characteristic, technical data and platform of electric system were
DONG Ming, JIANG Yue-li
doaj  

Analysis of emission tests of electromagnetic disturbances in diesel-electric locomotives [PDF]

open access: yesMATEC Web of Conferences, 2019
This paper discussed the measurement of radiated emissions of electromagnetic disturbances generated by diesel electric locomotive system. The measurement methodology, permissible values of a magnetic and electric field according to EN 50121-3-1 standard
Białoń Andrzej   +2 more
doaj   +1 more source

Signal synthesis by means of evolutionary algorithms [PDF]

open access: yes, 2011
In this article, we investigate a procedure for generating signals with genetic algorithms. Signals are obtained from elementary patterns characterized by different degrees of freedom.
Jaafar, Amine   +2 more
core   +4 more sources

Liquid Metal Microrobots for Magnetically Guided Transvascular Navigation

open access: yesAdvanced Materials, EarlyView.
Liquid metal‐based microrobots combine magnetic steering, intrinsic X‐ray visibility and softness, to navigate blood vessels even against flow. Under clinically relevant magnetic fields, liquid metal microrobots roll along vessel walls, cross endothelial barriers, and accumulate in target tissues.
Xiaohui Ju   +7 more
wiley   +1 more source

Machine Learning–Assisted Bio‐Interfacial Engineering Resolves Structural–Functional Conflicts in Nanocomposites

open access: yesAdvanced Materials, EarlyView.
A machine learning‐guided bio‐interfacial design strategy resolves the long‐standing strength–toughness–functionality trade‐off in nanocomposites. By efficiently mapping high‐performance regions in the composition–processing space, the approach delivers hierarchically entangled, nanosheet‐pinned architectures that combine mechanical robustness ...
Hao Wang   +10 more
wiley   +1 more source

Analysis of kinematic and energy parameters of electric locomotive wheel–rail adhesion

open access: yesВестник Научно-исследовательского института железнодорожного транспорта
Introduction. Electric locomotive wheel–rail adhesion is determined by various parameters (kinematic and energetic) that affect the mass and speed of the train, energy consumption, etc.
A. A. Baklanov
doaj   +1 more source

Utilizing digital twin technology for electric locomotive performance and fault analysis [PDF]

open access: yesE3S Web of Conferences
Increase of traction and energy efficiency and reliability of electric locomotive operation can be ensured, including through the use of digital technologies.
Tretyakov Evgeniy A., Budaev Artyom
doaj   +1 more source

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