Results 131 to 140 of about 507 (175)

Influence of the Aerodynamic Forces on the Pantograph-Catenary System for High Speed Trains

Civil-Comp Proceedings, 2009
Most of the high-speed trains in operation today have the electrical power supply delivered through the pantograph-catenary system. The understanding of the dynamics of this system is fundamental since it contributes to decrease the number of incidents related to these components, to reduce the maintenance and to improve interoperability.
J. Pombo, J. Ambrósio, M. Pereira, F. Rauter, COLLINA, ANDREA, FACCHINETTI, ALAN   +5 more
openaire   +2 more sources

Output-feedback control of the contact-force in high-speed-train pantographs

Proceedings of the 40th IEEE Conference on Decision and Control (Cat. No.01CH37228), 2002
One of the main problems in high-speed train transportation systems is the control of the contact force between the catenary and the pantograph collector end. The equivalent stiffness of the catenary is not constant and this leads to contact force oscillations whose frequency and magnitude mainly depend on the train velocity.
LEVANT A, PISANO, ALESSANDRO, USAI, ELIO
openaire   +1 more source

Numerical Analysis of Aerodynamic Noise of a High-Speed Pantograph

2013 Fourth International Conference on Digital Manufacturing & Automation, 2013
The aerodynamic noise of pantograph is one of the most important noise sources of high speed trains. Therefore, the reduction of the aerodynamic noise of pantograph becomes very important for reducing the total noise level of the high-speed trains. In this paper, the distribution of dipole sound sources at the surface of a single-arm pantograph and the
Shi Lei, Zhang Chengchun, Wang Jing, Ren Luquan   +3 more
openaire   +1 more source

Thermodynamic models of the air spring on the high-speed pantograph

Vehicle System Dynamics, 2023
The modelling method of the air spring and its additional pneumatic system has been studied more frequently in recent years. As for the railway field, the study of the secondary suspension system of the bogie is the most popular, while little focus is on the air spring of the pantograph.
Ning Zhou, Jiurui Liu, Marco Carnevale, Andrea Collina, Weihua Zhang   +4 more
openaire   +2 more sources

An instrumented pantograph for high speed current collection measurements

4th IET International Conference on Railway Condition Monitoring (RCM 2008), 2008
An instrumented pantograph has been developed by DeltaRail Group Limited that essentially exhibits the same aerodynamic characteristics as a standard high speed pantograph, which should assist engineers undertaking current collection tests and condition monitoring the overhead contact system.
P.M. Keen, R.E. Phillpotts, S. Conway
openaire   +1 more source

Investigation of Pantograph Effect on High-Speed Train Noise

Applied Mechanics and Materials, 2012
Using microphone and removable planar microphone array, the exterior and interior vehicle noise near pantograph were investigated when the train ran at 250-350km/h, the noise spectrum characters of these areas were obtained. The results show that at the pantograph seat and in the vehicle below pantograph, the noise spectrum show a broad band ...
Xiao Feng Zhang, You Gang Xiao, He Lian Deng, Jian Feng Huang   +3 more
openaire   +1 more source

Noise and vibration induced by a pantograph of high-speed trains

The Journal of the Acoustical Society of America, 2012
Pantographs mounted on the roof of the train body are high projections when they work. Along with the raising of the train speed, noise and vibration generated by pantographs are significant. This paper is aimed at evaluating the contribution of pantograph noise to overall noise of high-speed trains.
Zongguang Chen, Jianmin Ge, Junshan Lin, Zhaojin Sun, Jianqiang Guo   +4 more
openaire   +1 more source

Optimizing active control scheme of high-speed pantograph

2009 IEEE 6th International Power Electronics and Motion Control Conference, 2009
A novel control scheme for the active suspension in a 4-DOFs pantograph is presented here. The concepts of force cancellation, Skyhook damper and track-following spring are jointly applied to establish an active vibration control system. A force cancellation control scheme is used to isolate the sprung masses.
null Wu Yan, null Zheng Ji Hao, T.Q. Zheng   +2 more
openaire   +1 more source

A parallel actuated pantograph leg for high-speed locomotion

Journal of Bionic Engineering, 2017
High-speed running is one of the most important topics in the field of legged robots which requires strict constraints on structural design and control. To solve the problems of high acceleration, high energy consumption, high pace frequency and ground impact during high-speed movement, this paper presents a parallel actuated pantograph leg with an ...
Wei Guo, Changrong Cai, Mantian Li, Fusheng Zha, Pengfei Wang, Kenan Wang   +5 more
openaire   +1 more source

Multiple Pantograph Interaction With Catenaries in High-Speed Trains

Journal of Computational and Nonlinear Dynamics, 2012
The limitation on the top velocity of high-speed trains concerns the ability to supply the proper amount of energy required to run the engines through the catenary-pantograph interface. Due to the loss of contact, not only the energy supply is interrupted, but also arching between the collector bow of the pantograph and the contact wire of the catenary
João Pombo, Jorge Ambrósio
openaire   +1 more source