Results 51 to 60 of about 15,495,130 (258)

Research and Development of Energy-storage Light-railVehicle Electric Traction System

open access: yes机车电传动, 2013
Parameters and performance requirement of energy-storage electric traction light-rail vehicle were introduced. T/B characteristic of electric traction system, simulation and calculation of vehicle operation capability, main circuit, control system and ...
CHEN Xin-jian   +4 more
doaj  

Design and Research of Dynamic Loading System for High-speed EMU Axle Box Bearing Reliability Test Bench

open access: yesChengshi guidao jiaotong yanjiu
Objective Bench test is a primary technical means for studying the performance of high-speed EMU (electric multiple units) axle box bearings. Accurately simulating the practical operational load conditions of axle box bearings is essential for obtaining ...
DU Hongjun   +4 more
doaj   +1 more source

Study on Control Strategy of Electric Power Steering for Commercial Vehicle Based on Multi-Map

open access: yesWorld Electric Vehicle Journal, 2023
In order to solve the problem where the traditional electric power steering system (EPS) provides too much assist torque under low load and low adhesion coefficient, which damages the driver’s road feeling and affects driving safety, this paper designs a
Yaohua Li   +4 more
doaj   +1 more source

Development of Comprehensive Subgrade Deflection Acceptance Criteria - Phase 3 Report [PDF]

open access: yes, 2001
This report has presented the findings of Phase III of research conducted to aid in the development of subgrade deflection acceptance criteria for WisDOT.
Crovetti, James, Schabelski, Jay
core   +1 more source

Multifaceted Behavior and Functional Versatility of Ferritic Stainless Steels, Part I: Applications and Processing, a Review

open access: yessteel research international, EarlyView.
This review investigates the processing‐microstructure‐property relationships in ferritic stainless steels (FSSs). It highlights advances in deformation behavior, heat treatments, surface modifications, and alloying effects. Theoretical models, including Johnson‐Mehl‐Avrami‐Kolmogorov, Arrhenius, nucleation theory, and diffusion theories, are discussed
Shahab Bazri   +4 more
wiley   +1 more source

Research on Key Technologies of Traction System Based on Power Electronic Transformer

open access: yesKongzhi Yu Xinxi Jishu, 2017
This paper proposed a main circuit structure of a new traction drive system based on power electronic transformer (PET). Compared with traditional traction drive system, the new transmission system has lighter weight and smaller size , has more flexible ...
SONG Pinggang, GE Wang, ZHU Weichang
doaj  

Impact of half‐joint failures on RC girder bridges: A robustness quantification study

open access: yesStructural Concrete, EarlyView.
Abstract The robustness of bridge structures is critical to ensuring safety and service continuity, particularly in aging infrastructure exposed to degradation and unexpected loads. Reinforced concrete (RC) half‐joint bridges—widely built in Italy between the 1950s and 1970s—exhibit specific vulnerabilities due to inspection challenges, durability ...
Paolo Martinelli, Matteo Colombo
wiley   +1 more source

Analysis of Locomotive Axle Load Transfer with Considerationof Adhesive Force Varying for Each Axle

open access: yes机车电传动, 2014
Considering the distribution of adhesive force varying with the axle load, the arithmetic of axle load transfer should beimproved. Taking a six-axis and a four-axis locomotive as cases respectively, arithmetic with considering and no considering adhesive
WEI Jia-qi, ZHANG Kai-lin, YAO Yuan
doaj  

Active Control of Shimmy in Articulated Single-Axle Straddle-Type Monorail Train

open access: yesMachines
The articulated single-axle straddle-type monorail train has many unique advantages, making it the preferred choice for medium-capacity urban rail transit. However, the issue of vehicle shimmy greatly restricts its promotion and application.
Jiachen Song   +3 more
doaj   +1 more source

Electronic Control of Motor Axles of Forestry Trailers

open access: yesCroatian Journal of Forest Engineering, 2015
Timber transport in the forest is a very complex operation, and expensive from an energy point of view. Furthermore, in some cases, this operation can be very difficult and dangerous in unfavorable conditions of the road surface, which mainly occur in winter (frozen ground) and in spring (muddy ground).
MANZONE, Marco, BALSARI, Paolo
openaire   +3 more sources

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