Results 61 to 70 of about 516 (189)

A Review of Quadruped Robots: Structure, Control, and Autonomous Motion

Advanced Intelligent Systems, Volume 6, Issue 6, June 2024.
Quadruped robots are advanced intelligent system. In this article, research achievements in key technical areas of quadruped robots, encompassing structural design, gait planning, traditional control strategies, intelligent control strategies, and autonomous movement, are comprehensively discussed.
Yanan Fan, Zhongcai Pei, Chen Wang, Meng Li, Zhiyong Tang, Qinghua Liu   +5 more
wiley   +1 more source

Research Progress and Prospects on Pantograph-Catenary Arcing in Urban Rail Transit

Chengshi guidao jiaotong yanjiu
［Objective］ Pantograph-catenary (PC) arcing degrades the train current collection quality, causes ablation of pantograph carbon strips and contact wires, and consequently affects safety and stability of train operation.
ZHANG Yuhang, WEI Zhiheng, ZHOU Yuxiang, MA Zhipeng   +3 more
doaj   +1 more source

A New Contactless Fault Diagnosis Approach for Pantograph-Catenary System Using Pattern Recognition and Image Processing Methods

Advances in Electrical and Computer Engineering, 2014
Comfort and safety of railway transport has become more important as train speeds continue to increase. In electrified railways, the electrical current of the train is produced by the sliding contact between the pantograph and catenary. The quality of
AYDIN, I., KARAKOSE, M., AKIN, E.
doaj   +1 more source

Research of simulation and experiment on arc characteristics of gas mechanical switch

High Voltage, Volume 9, Issue 3, Page 626-635, June 2024.
Abstract An arc is the high‐temperature discharge plasma produced in the opening process of mechanical switches, which directly affects the breaking capability of a hybrid DC circuit breaker. According to the physical mechanism of an electric arc, the construction of an arc model for simulation analysis is an important technical means in the electrical
Cheng Jiang, Lu Qu, Zhangqing Yu, Zhizheng Gan, Xin yan, Rong Zeng, Yulong Huang, Shaofu Li   +7 more
wiley   +1 more source

Contact Wire Irregularity Stochastics and Effect on High-speed Railway Pantograph-Catenary Interactions

, 2020
In high-speed rail operations, contact wire irregularity (CWI) in a catenary is a common disturbance to the pantograph-catenary interaction performance, which directly affects the quality of current collection.
Liu, Zhendong, Liu, Zhigang, Nåvik, Petter Juell, Rønnquist, Anders, Song, Yang   +4 more
core   +2 more sources

Analysis and suppression of operational overvoltage and inrush current for high‐speed trains by automatic phase‐switching technique

High Voltage, Volume 9, Issue 3, Page 733-748, June 2024.
Abstract When a high‐speed train approaches the insulated phase‐splitting section embedded between neighbouring power supply arms, the vacuum circuit breaker (VCB) installed on trains must be disconnected to maintain the traction power supply system as a no‐load condition for completing phase‐switching action, as the train passes through the phase ...
Ye Cao, Song Xiao, Zhizong Ye, Guangning Wu, Yujun Guo, Guoqiang Gao, Chuanming Sun, Jiancheng Liu, Zheng Chen, Hao Hou, Zijing Wang, Puyang Liu, Yuhui Zhang, Jie Yu   +13 more
wiley   +1 more source

Design of a Quadruped Robot with Morphological Adaptation through Reconfigurable Sprawling Structure and Method

Advanced Intelligent Systems, Volume 6, Issue 5, May 2024.
In this article, a novel quadruped robot with a reconfigurable sprawl posture and posture transformation strategy is proposed, which can transform between different sprawl postures to cope with complex environments such as narrow spaces, obstacles, and smooth/rough inclined surfaces, and adapt to a dorsal downward fall posture through reverse sprawling.
Jiwei Yuan, Shuangjie Wang, Bingcheng Wang, Ruizhuo Shi, Xuan Wu, Lei Li, Weipeng Li, Zhouyi Wang, Zhendong Dai   +8 more
wiley   +1 more source

Power quality phenomena in electrified railways: Conventional and new trends in power quality improvement toward public power systems [PDF]

, 2018
Nowadays, railway electrification is the most efficient way to power the trains. However, power quality (PQ) phenomena toward public power systems (PPSs) have always a main concern to the railway operators, especially when the single phase traction power
Afonso, João L., Carvalho, Adriano S., Martins, Antonio P., Monteiro, Vítor Duarte Fernandes, Sousa, Tiago J. C., Tanta, Mohamed   +5 more
core   +1 more source

On the role of time‐of‐use electricity price in charge scheduling for electric bus fleets

Computer-Aided Civil and Infrastructure Engineering, Volume 39, Issue 8, Page 1218-1237, 15 April 2024.
Abstract As electric buses become increasingly popular, it is imperative to optimize the schedules of electric buses with explicit consideration of their charging requirements. Unfortunately, existing studies failed to properly model the impacts of essential operating factors, including the time‐of‐use (TOU) electricity price, partial charging, and ...
Le Zhang, Yadong Wang, Weihua Gu, Yu Han, Edward Chung, Xiaobo Qu   +5 more
wiley   +1 more source

On Modelling and Control of Pantograph Catenary Systems [PDF]

, 2011
The paper describes modelling and control techniques studied and applied to selected pantograph-catenary (PAC) systems. The work has been co-funded by the European Union under the ERDF project: ‘PAntograph-Catenary Interaction Framework for Intelligent ...
Mpanda, A., Rachid, A., Walters, Simon
core   +2 more sources