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Influence of Track Irregularities in the Catenary-Pantograph Dynamic Interaction
Journal of Computational and Nonlinear Dynamics, 2012 This paper presents an advanced pantograph-catenary-vehicle-track model, which allows us to analyze the vertical dynamics of the complete system. The developed model is able to evaluate the displacements and the contact force generated in the catenary-pantograph as well as the wheel-track interactions.
Carnicero López, Alberto +4 more
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On effects of track random irregularities on random vibrations of vehicle–track interactions
Probabilistic Engineering Mechanics, 2017Abstract As the integrated reflection of track substructure deformations and the most important excitation for vehicle–track interactions, track irregularities show random nature, and generally being regarded as weak stationary random processes. To better expose the full statistical characteristics of track random irregularities on amplitude and ...
Lei Xu, Wanming Zhai, Jianmin Gao
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Mechanical Systems and Signal Processing, 2022 Article number 108625The actual trend of railway industry on track surveying is heading up the development of fast automated methods for continuous monitoring of track quality.
Sérgio Munoz +2 more
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An adaptive method for tracking voicing irregularities
The Journal of the Acoustical Society of America, 1992A method has been developed for tracking irregularities in the acoustic waveform of a sustained phonation using the adaptive Wiener filter. Irregularities are determined by the technique of correlation cancellation. The algorithm is evaluated using sustained vowels produced by a formant synthesizer and by subjects with and without phonatary disorders ...
Y, Qi, T, Shipp
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Robust object tracking of irregular terrain vehicle
IEEE/RSJ International Conference on Intelligent Robots and System, 2003Tracking a target robustly by utilizing vision is very difficult for a mobile robot running over the irregular terrain of a natural environment, due to the image deformation caused by the rolling and pitching of the camera, as well as due to the relative movement between the target and the camera.
Jinsong Ding +4 more
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Tracking irregular acoustic patterns by finger tapping
International Journal of Psychophysiology, 1988Acoustical sequences were divided by time intervals of various durations, and the performance of finger tappings following the stimuli were recorded. The results proved that it is difficult to synchronize finger tapping with irregular acoustical patterns.
M, Franĕk, T, Radil, M, Indra
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The Signal Processing in Track Irregularity Detection
Applied Mechanics and Materials, 2013In order to overcome the non-uniform property of time domain signal which is obtained in the process of track irregularity detection, design a set of equidistant signal sampling system to collect signal. Use the EMD method based on the criterion of continuous mean square error de-nosing.
Xin Chang Liu +4 more
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Influence of Track Irregularities in the Stress Levels of the Ballasted and Ballastless Tracks
2020The ballasted and ballastless tracks present substantial differences in terms of the structural configuration and mechanical behaviour. In order to better understand the foundation performance, numerical analysis of the two types of railway track was carried out, computing the stress paths induced by the passage of trains. In this analysis, the effects
Ana Ramos +3 more
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Robust tracking for camera control on an irregular terrain vehicle
Proceedings of the 41st SICE Annual Conference. SICE 2002., 2003Tracking a target robustly by vision is very difficult for a mobile robot running on irregular terrain in a natural environment, because the image deformation caused by rolling and pitching of the camera, as well as relative movement between the target and the camera, affect the tracking ability.
Ding, Jinsong +4 more
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A Short-Range Prediction Model for Track Irregularity of a Shorter Section of Track
Traffic and Transportation Studies 2010, 2010Railway track is one of the main railway facilities and the basis for trains to operate on. In order to keep passenger and freight trains moving safely, stably and uninterruptedly, the railroads must ensure track roughness low. The launch of high-speed and high-haul trains requires lower roughness of track, and consequently expects the railroads to ...
Peng Xu +4 more
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