Results 271 to 280 of about 144,627 (328)
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Angewandte Chemie International Edition, 2006
AbstractResearch into the autonomous motion of artificial nano‐ and microscale objects provides basic principles to explore possible applications, such as self‐assembly of superstructures, roving sensors, and drug delivery. Although the systems described have unique propulsion mechanisms, motility in each case is made possible by the conversion of ...
Walter F, Paxton +3 more
openaire +2 more sources
AbstractResearch into the autonomous motion of artificial nano‐ and microscale objects provides basic principles to explore possible applications, such as self‐assembly of superstructures, roving sensors, and drug delivery. Although the systems described have unique propulsion mechanisms, motility in each case is made possible by the conversion of ...
Walter F, Paxton +3 more
openaire +2 more sources
IEEE Transactions on Transportation Electrification, 2022
Electrical railway harmonic instability issues are common in the high-frequency range. The effective frequency of the traditional converter’s small-signal averaging model is below 1/2 switching frequency since the PWM sideband harmonic components are ...
Xiangyu Meng +5 more
semanticscholar +1 more source
Electrical railway harmonic instability issues are common in the high-frequency range. The effective frequency of the traditional converter’s small-signal averaging model is below 1/2 switching frequency since the PWM sideband harmonic components are ...
Xiangyu Meng +5 more
semanticscholar +1 more source
Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, 2022
Carbody hunting stability has attracted more and more attention due to its great influence on the dynamic performance of a railway vehicle. To fully understand the correlation between the wheel–rail contact relationship and the carbody hunting stability ...
Wei Li +4 more
semanticscholar +1 more source
Carbody hunting stability has attracted more and more attention due to its great influence on the dynamic performance of a railway vehicle. To fully understand the correlation between the wheel–rail contact relationship and the carbody hunting stability ...
Wei Li +4 more
semanticscholar +1 more source
Obstacle detection method of unmanned electric locomotive in coal mine based on YOLOv3-4L
J. Electronic Imaging, 2022. It is one of the most critical technologies for unmanned electric locomotives to detect the obstacles in front of their operation quickly and accurately, which is of great significance for the safe operation of electric locomotives.
Wenshan Wang +3 more
semanticscholar +1 more source
Effect of drive and transmission system on wheel polygonal wear of an heavy-haul locomotive
Vehicle System Dynamics, 2022Wheel polygonization intensifies the dynamic interaction between wheel and rail and reduces the service life of the locomotive and the rail system.
Zaigang Chen +3 more
semanticscholar +1 more source
IEEE Transactions on Systems, Man, and Cybernetics: Systems, 2021
Toward wireless medical microrobot applications driven by an electromagnetic actuation (EMA) system, challenges associated with movability, the electromagnetic force, and the coil system size must be addressed.
M. Hoang +7 more
semanticscholar +1 more source
Toward wireless medical microrobot applications driven by an electromagnetic actuation (EMA) system, challenges associated with movability, the electromagnetic force, and the coil system size must be addressed.
M. Hoang +7 more
semanticscholar +1 more source
Vehicle System Dynamics, 2021
Development of railway transportation capabilities towards high-power, high-speed and heavy axle-load makes the dynamic interactions between the electric drive subsystem and the mechanical subsystem of a locomotive more intensive and complicated, which ...
Ziwei Zhou +6 more
semanticscholar +1 more source
Development of railway transportation capabilities towards high-power, high-speed and heavy axle-load makes the dynamic interactions between the electric drive subsystem and the mechanical subsystem of a locomotive more intensive and complicated, which ...
Ziwei Zhou +6 more
semanticscholar +1 more source
IEEE Transactions on Vehicular Technology, 2021
This paper presents a hierarchical power allocation method (HPAM) for dual-stack fuel cell (FC) hybrid locomotive powertrain. In a high-power FC application such as rail transportation, the use of multi-stack system is able to provide the primary and ...
Tianhong Wang +5 more
semanticscholar +1 more source
This paper presents a hierarchical power allocation method (HPAM) for dual-stack fuel cell (FC) hybrid locomotive powertrain. In a high-power FC application such as rail transportation, the use of multi-stack system is able to provide the primary and ...
Tianhong Wang +5 more
semanticscholar +1 more source
Dynamic modelling of traction motor bearings in locomotive-track spatially coupled dynamics system
Vehicle System Dynamics, 2021For railway locomotive, its motor bearing is one of the key components, which is likely to be damaged due to the intensified vibration conditions caused by the wheel-rail interaction and gear mesh.
Yuqing Liu +3 more
semanticscholar +1 more source
1995
Abstract The mature step cycle of human walking emerges from an intimate link between stance and transport. We see in the earliest spontaneous movements of the legs in the fetus and newborn that there is inherent temporal order (Provine, 1988; Robertson, 1988).
Q. Bone +2 more
openaire +2 more sources
Abstract The mature step cycle of human walking emerges from an intimate link between stance and transport. We see in the earliest spontaneous movements of the legs in the fetus and newborn that there is inherent temporal order (Provine, 1988; Robertson, 1988).
Q. Bone +2 more
openaire +2 more sources