Results 171 to 180 of about 1,480 (206)
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Investigation of Pantograph Effect on High-Speed Train Noise
Applied Mechanics and Materials, 2012Using 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 +3 more
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Noise and vibration induced by a pantograph of high-speed trains
The Journal of the Acoustical Society of America, 2012Pantographs 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 +4 more
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Optimizing active control scheme of high-speed pantograph
2009 IEEE 6th International Power Electronics and Motion Control Conference, 2009A 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 +2 more
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A parallel actuated pantograph leg for high-speed locomotion
Journal of Bionic Engineering, 2017High-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 +5 more
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An instrumented pantograph for high speed current collection measurements
4th IET International Conference on Railway Condition Monitoring (RCM 2008), 2008An 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
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Physically based modelling of a high-speed pantograph
2014Pantographs are the connecting element between the train and the current-carrying contact wire and are so far the limiting factor in the attempt of reaching higher speeds in the railway industry. Their task is to establish a reliable permanent connection between the train and the contact wire while keeping the needed contact force as low as possible to
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Research of the active control for high-speed train pantograph
2008 IEEE Conference on Cybernetics and Intelligent Systems, 2008One of the main problems which limit the trains run at a higher speed is the vibration of the contact force between the pantograph and the catenary. In this paper, three kinds of stiffness curves are fitted by using the non-linear least square method and a unified fitting formula is presented. Based on this, a 3-DOF time-variant model of the pantograph
null Wang Shudong +2 more
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Research on the Heat Transfer of High-Speed Railway Pantographs
Applied Mechanics and Materials, 2014In the pantograph-catenary system of electric railroads, there is friction heat between high-speed moving pantograph sliders and the contact wires, leading to a temperature increase on the contact surface. On the contact surface under the current collecting conditions, there are also contact resistance heat and arc heat produced by the current effect ...
Jie Ruan +3 more
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The French High Speed Train (TGV) Pantograph's Aeroacoustics
SAE Technical Paper Series, 1997<div class="htmlview paragraph">After 300 kph the aerodynamics noise emitted by the French High Speed Train T.G.V. (Train Grande Vitesse) becomes preponderant. The pantograph and roof environment located in the top of the rear power car are one of the sources which participate in the overall noise of the train. Investigations in an anechoi'c wind
A. Fages, C. Bertrand
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Design and Experimental Results of an Active Suspension System for a High-Speed Pantograph
IEEE/ASME Transactions on Mechatronics, 2008In high-speed trains, current collection from the overhead line is assured by an articulated suspension system called the dasiadasiapantographpsilapsila Contact wires and overhead line are flexible systems that are subjected to oscillations that have to be compensated for a satisfactory quality of current collection. In high-speed railway applications,
ALLOTTA, BENEDETTO +2 more
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