Results 21 to 30 of about 645,874 (305)
Aerodynamic Drag Reduction on Speed Skating Helmet by Surface Structures
Applied Sciences, 2022 The aerodynamic drag for speed skating helmets with surface structures was investigated in this work by using numerical and experimental methods. Computational fluid dynamic (CFD) research was performed to analyze the detail of the flow field around the ...
Yanqing Wang +5 more
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Let’s Make Ball Balancing Great Again: Why You Should Use Temporary Speed Reduction
Machines, 2020 Automatic ball balancing is a technique adopted in rotordynamics to reduce unknown rotor unbalance automatically. This technique sounds appealing as it can ease a panoply of balancing issues considerably.
Gabriël Van De Velde +3 more
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Speed Bumps Impact on Motor Transport Noise
The Baltic Journal of Road and Bridge Engineering, 2015 Most accidents are caused by excessive speed or aggressive driver behavior. One of the most popular speed regulation implement is speed bumps. However, there are some problems with speed bumps as well – it has been noticed that speed bumps increase motor
Tomas Januševičius, Rasa Akelaitytė
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Combined methods for torque variation reduction of high-speed FSPM
Energy Reports, 2023 Flux switching permanent magnet machine (FSPM) with six slots and four poles (6/4) shows great potential for high-speed operation. However, the 6/4 FSPM suffers from high cogging torque at no load and loaded torque variation.
Jiayue Zhou, Xi Xiao
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Speed Management Strategies; A Systematic Review [PDF]
Bulletin of Emergency and Trauma, 2016 Objective: To systematically identify the various methods of speed management and their effects. Methods: A systematic search was performed in Science Direct, Ovid Medline, Scopus, PubMed and ProQuest databases from April to June 2015. Hand searching and
Homayoun Sadeghi Bazargani +1 more
doaj +2 more sources
Traffic Safety ResearchCurrent guidelines for work zones do not consider the needs of cyclists and pedestrians enough, which leads to unpredictable situations and a resulting higher crash risk for these road user groups.
Katja Kircher, Anna Niska
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Design and implementation of speed fluctuation reduction for a ball screw feed system at low-speed operation [PDF]
Mechanical Sciences, 2020 In the high-precision servo feed system, when the permanent magnet synchronous motor (PMSM) is operated at low speed in the classical drive feed system (CDFS), the speed fluctuation caused by the motor torque harmonics seriously affects the speed ...
Z. Wang +9 more
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Ship roll stabilization control with low speed loss
, 2014 Large roll motion induced by waves can severely affect the ability of vessels and the speed will loss due to added resistance which caused by ship motions, especially in moderate to high sea states. With increasing needs of fuel efficiency and greenhouse
Zhiquan Liu +7 more
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Energies, 2022 The vessel speed reduction program (VSRP) was first introduced in the Port of Los Angeles in 2001 to improve air quality. In this study, an algorithm was developed to calculate ship emissions with a bottom-up approach based on ship activity using ...
Jae-Ung Lee +5 more
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Arnoldi model order reduction for electromagnetic wave scattering computation [PDF]
, 2007 This paper presents a model order reduction (MOR) algorithm for the volume integral equation formulation of electromagnetic wave scattering. We apply the Arnoldi algorithm to circumvent the computational complexity associated with the numerical solution ...
Bradley, Patrick +5 more
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