Results 11 to 20 of about 1,333,516 (246)

A Position Estimator Using Kalman Filter With a Data Rejection Filter for a Long-Stator Linear Synchronous Motor of Maglev

IEEE Access, 2020
As a maglev levitates with a small air gap and runs very fast, securing the levitation system's stability is crucial. Thus, the high-performance decoupling control between the propulsion control system and the levitation system is of critical importance.
Jeong-Min Jo, Seok Y. Lee, Kwangjoo Lee, Ye Jun Oh, Su Y. Choi, Chang-Young Lee, Kwansup Lee   +6 more
doaj   +1 more source

Analysis and Optimization of the Causes of Cracks in the Pavement of Highway and Railway Intersections [PDF]

E3S Web of Conferences
Firstly, an in-depth analysis is conducted on the principle of crack formation in the pavement panel of highway and railway level crossings and the reasons for cracks under load. Then, based on the characteristics of crack formation in the pavement panel,
Huang Xingqi, Liu Dashun, Lian Dong, Liu Fengmao   +3 more
doaj   +1 more source

Influence of unsupported sleepers on the dynamic stability of ballasted bed based on wheelset impact tests

Railway Engineering Science, 2023
The unsupported sleeper can change the load characteristics of ballast particles and thus affect the dynamic stability of a ballasted bed. In this work, a laboratory test was constructed on a ballasted track containing unsupported sleepers. The ballasted
Juzhen Liu, Shuai Du, Ganzhong Liu, Ping Wang, Rong Chen, Xiankui Wei, Hao Liu   +6 more
doaj   +1 more source

Building vulnerability assessment on an urban scale: A case study on heavy rainfall events [PDF]

E3S Web of Conferences
This paper presents a semi-automated approach for assessing building vulnerability on an urban scale, specifically focusing on floods and heavy rainfall events.
Rosin Julia, Vetter Joanna Zarah, Neuhaeuser Stefan, Stolz Alexander   +3 more
doaj   +1 more source

Research on Variable-Step-Size Adaptive Filter Algorithm with a Momentum Term

Applied Sciences, 2023
To address the contradiction between the convergence error and convergence rate in the LMS algorithm, this study proposes a variable-step-size adaptive filter algorithm with a momentum term based on the logistic function.
Binbin Li, Bo Lu, Xiping Kou, Yang Shi, Li Yu, Hongtao Guo, Binbin Lv, Kaichun Zeng   +7 more
doaj   +1 more source

Status of research on non-conventional technology assisted single-point diamond turning

Nanotechnology and Precision Engineering, 2023
With the increasing use of difficult-to-machine materials in aerospace applications, machining requirements are becoming ever more rigorous. However, traditional single-point diamond turning (SPDT) can cause surface damage and tool wear.
Zhuang Chen, Guangjun Chen, Zhiwei Yu, Jiashuai Huang, Hong Wei   +4 more
doaj   +1 more source

Numerical Study of Nonadiabatic Wall Effects on Aerodynamic Characteristics of CHN-T1 Standard Model

Aerospace, 2023
Cryogenic wind tunnels provide the for possibility aerodynamic tests to take place over high Reynolds numbers by operating at a low gas temperature to meet the real flight simulation requirements, especially for state-of-the-art large transport aircrafts.
Xiaobing Wang, Junqiang Wu, Jianzhong Chen, Yuping Li, Zhongliang Zhao, Guangyuan Liu, Yang Tao, Neng Xiong   +7 more
doaj   +1 more source

Study on Flow Mechanism of a Morphing Supercritical Airfoil

Shock and Vibration, 2021
In order to maintain the best performance in flight, a new concept, morphing aircraft, has been proposed, which can change the real-time aerodynamic characteristics under different flight conditions.
Yuanjing Wang, Binbin Lv, Pengxuan Lei, Wenkui Shi, Yu Yan   +4 more
doaj   +1 more source

A Study on the Measuring System of Contact Force of Pantograph for the High-Speed Train

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
The overhead pantograph for the high speed train is a mechanical and electrical part mounted on the train roof to supply the train with electrical power from the catenary system.
Jin-Sung PAIK, Chan-Kyoung PARK, Yong-Guk KIM, Ki-Hwan KIM   +3 more
doaj   +1 more source

Study on Fluid–Structure Interaction of a Camber Morphing Wing

Vibration, 2023
The influence of trailing edge deformation on the aerodynamic characteristics of camber morphing wings is an important topic in the aviation field.
Yuanjing Wang, Pengxuan Lei, Binbin Lv, Yuchen Li, Hongtao Guo   +4 more
doaj   +1 more source