EP2269887B1 - Procédé de détermination de la géométrie de position de voies à ondes courtes et des affaissements des rails soumis à une charge - Google Patents

Procédé de détermination de la géométrie de position de voies à ondes courtes et des affaissements des rails soumis à une charge Download PDF

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Publication number
EP2269887B1
EP2269887B1 EP10001974.4A EP10001974A EP2269887B1 EP 2269887 B1 EP2269887 B1 EP 2269887B1 EP 10001974 A EP10001974 A EP 10001974A EP 2269887 B1 EP2269887 B1 EP 2269887B1
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EP
European Patent Office
Prior art keywords
wave
filter
track position
long
short
Prior art date
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Active
Application number
EP10001974.4A
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German (de)
English (en)
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EP2269887A1 (fr
Inventor
Rong Dr. Le
Klaus-Ulrich Wolter
Franz Erhard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Bahn AG
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Deutsche Bahn AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/08—Measuring installations for surveying permanent way
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/047—Track or rail movements

Definitions

  • the invention relates to a method for determining short-wave track geometry and the rail subsidence under load, wherein the short-wave geometric track position of a rail vehicle to detect and separate from the influence of the wheelset load.
  • Such a method is from the DE 26 17 192 A1 known.
  • the maintenance of the tracks is based on geometrical sizes. Special inspection vehicles are used to inspect the deviation of the track from its ideal position. Because of the measurement techniques used, the current in-service inspection vehicles can only detect long-wave fault shapes under load with the required accuracy.
  • measuring systems which detect the short-wave track geometry indirectly via measured wheel-set bearing accelerations and evaluate them directly or convert the wheel-set bearing accelerations into a vertical track-position deviation.
  • a device for measuring wavy deformations of the rail rolling surface of a railroad track, selecting a wavelength from a selected range of wavelengths, measuring by means of a trolley and sensors, processing the signals, determining the depth of the deformation and setting a specific ratio ( DE 30 08 440 C2 ).
  • the DE 34 44 723 C2 describes a device for detecting the track geometry with a laser, which is arranged on a rail vehicle.
  • Optical measuring systems in rail vehicles require a high level of maintenance of the measuring technology (contamination) and are therefore not suitable for automated use.
  • Indirect assessment of short-wave track geometry based on measured accelerations depends on several boundary conditions, such as: Vehicle speed, error amplitude and error length, so that no clear conclusion on the short-wave track geometry is possible.
  • the invention has for its object to detect the short-wave geometric track position of a rail vehicle and to separate the influence of the wheelset load.
  • the proportion without the influence of the wheelset load is comparable to the manual inspection.
  • the remaining proportion corresponds to the long-wave track deviations, which result from long-wave track position disturbances and the rail depression under the influence of the wheelset load.
  • filters can be used which filter the locally equidistant true vertical track position signal in the local area.
  • the independent, separate design of the two filters which provide the long-wave component and the short-wave component are not suitable, since these filters in addition to different amplitude responses also have different phase responses and thus lost in the separation of the signal components essential information.
  • the filter cutoff frequencies in the local area as well as the filter steepness are determined from measured track position signals which contain long-wave and short-wave track position deviations. This is done for example by means of spectral analyzes in the local frequency range.
  • an FIR high-pass filter (HP filter) with the determined cutoff frequency and filter slope with a linear phase response is designed in the first step.
  • the filter design provides the filter coefficients b k, HP .
  • the filter coefficients bk , TP of the corresponding low-pass filter can be determined directly.
  • b k . TP b k . AP - b k . HP
  • method 2 involves the high-pass-filtering of the locally equidistant true-to-life vertical track signal z [n].
  • the long-wave component z LW [n] of z [n] is obtained by subtracting z KW [ n] from z [n].
  • z LW n z n - z KW n
  • the short-wave component z KW [n] In order for the distribution of the locally equidistant vertical track position signal z [n] to take place without loss of information, the short-wave component z KW [n] must not exhibit any phase distortion compared to the signal z [n]. This is achieved by applying the high pass filter twice to the signal z [n], with the second order reversing the signal order.
  • the input is a stationary equidistant vertical track position signal z [n], which was calculated from measured wheel set bearing accelerations (procedure according to the application for industrial property rights) DE 10 2008 062 143.9 ).
  • the equidistant local increment is 0.2 m.
  • the axle bearing accelerations were measured under a load of approx. 7 t.
  • FIG. 6 shows the amplitude and phase response of the Butterworth high pass filter.
  • the locally equidistant dimensionally accurate vertical track position signal z [n] is filtered twice with the HP filter, with the second filters reversing the signal sequence and thus the phase distortion of the HP filter is completely compensated.
  • This high-pass-filtered signal is the short-wave track geometry in the center section without load.
  • the long-wave component z LW [n] of z [n] is determined by subtraction.
  • the short-wave component z KW [n] is subtracted from the locally equidistant dimensionally accurate vertical track position signal z [n].
  • the result is the long-wave component z LW [n]. This proportion corresponds to the rail depression under the influence of the wheelset load and corresponds to the size of the hollow layer and the long-wave track deviation under the switch frog.
  • FIG. 8 the comparison of a manual measurement on a switch frog with the determined short-wave component of a measurement from a rule train is compared.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Claims (6)

  1. Procédé de séparation non distorsive d'une géométrie de position de voie ajustée en parties à onde courte et à onde longue sans perte d'informations,
    caractérisé en ce que
    un signal de position de voie vertical ajusté et équidistant localement est décomposé en une partie à onde courte sans charge en fonction de la géométrie et en une partie à onde longue en fonction de l'enfoncement du rail sous charge avec des écarts de position de voie à onde longue et que des filtres sont utilisés pour la séparation non distorsive dans le secteur localisé et, en première étape, un filtre ayant des particularités de conception connues est conçu, la fréquence de limite de filtration caractéristique et la pente de filtration étant d'abord déterminées à partir des signaux de position de voie mesurés qui contiennent des écarts de position de voie à onde longue et à onde courte, ceci étant effectué de préférence au moyen d'analyses spectrales dans la plage de fréquence locale et la répartition du signal de voie vertical ajusté et équidistant localement étant faite en fonction du type de filtre sélectionné et de la courbe de phase du filtre et, en cas d'utilisation d'un filtre FIR à courbe de phase linéaire, le second filtre ayant également une courbe de phase linéaire et le même agencement de filtration que le premier filtre et étant calculé à partir des efficiences de filtration du premier filtre et le signal de position de voie vertical ajusté et équidistant localement étant divisé en utilisant les deux filtres en une partie à onde courte et une partie à onde longue sans perte d'informations en utilisant les deux filtres,
    ou,
    en cas d'utilisation d'un filtre FIR ayant une courbe de phase non linéaire ou d'un filtre IIR pour la séparation non distorsive du signal de position de voie vertical ajusté et équidistant localement en une partie à onde courte et une partie à onde longue, le signal de position de voie est filtré et une distorsion de phase est compensée entièrement par une deuxième filtration à l'aide du même filtre et d'une succession inverse de signaux, la fréquence de limite de filtration caractéristique et la pente de filtration sont d'abord déterminées à partir des signaux de position de voie qui contiennent des écarts de position de voie à onde longue et à onde courte, ceci étant effectué de préférence au moyen d'analyses spectrales dans la plage de fréquence locale et la partie à onde longue ou à onde courte du signal de voie vertical étant déterminée en fonction du choix du filtre, la seconde partie à onde courte ou à onde longue concernée étant déterminée par soustraction du signal de position de voie filtré deux fois de la position de voie d'origine.
  2. Procédé selon la revendication1, caractérisé en ce que la partie à onde courte du signal équivaut à la géométrie de roulement sur des aiguillages, portions de rails, traverses isolantes et est évaluée.
  3. Procédé selon la revendication 1, caractérisé en ce que la partie à onde longue du signal équivaut à l'enfoncement sous charge et à l'écart de position des voies à onde longue et est évaluée.
  4. Procédé selon les revendications 1 à 3, caractérisé en ce que les signaux de position de voie verticaux ajustés et équidistants localement sont déterminés par des mesures de véhicules d'inspection de position des voies.
  5. Procédé selon les revendications 1 à 4, caractérisé en ce que les signaux de position de voie verticaux ajustés et équidistants localement sont déterminés par des mesures de véhicules fonctionnant normalement.
  6. Procédé selon les revendications 1 à 5, caractérisé en ce que les signaux de position de voie verticaux ajustés et équidistants localement sont déterminés par des mesures manuelles.
EP10001974.4A 2009-07-03 2010-02-26 Procédé de détermination de la géométrie de position de voies à ondes courtes et des affaissements des rails soumis à une charge Active EP2269887B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009031819.4A DE102009031819B4 (de) 2009-07-03 2009-07-03 Verfahren zur Ermittlung von kurzwelliger Gleislagegeometrie und der Schieneneinsenkungen unter Last

Publications (2)

Publication Number Publication Date
EP2269887A1 EP2269887A1 (fr) 2011-01-05
EP2269887B1 true EP2269887B1 (fr) 2013-11-20

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ID=42664627

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Application Number Title Priority Date Filing Date
EP10001974.4A Active EP2269887B1 (fr) 2009-07-03 2010-02-26 Procédé de détermination de la géométrie de position de voies à ondes courtes et des affaissements des rails soumis à une charge

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EP (1) EP2269887B1 (fr)
DE (1) DE102009031819B4 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT527178B1 (de) * 2023-05-08 2025-06-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren zur Kontrolle des Zustandes eines Radlenkers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH592781A5 (fr) * 1975-04-23 1977-11-15 Scheuchzer Auguste Les Fils De
CH630015A5 (fr) * 1979-03-06 1982-05-28 Speno International Dispositif de mesure des deformations ondulatoires de la surface de roulement des rails d'une voie ferree.
CH653073A5 (fr) * 1982-10-18 1985-12-13 Speno International Dispositif de mesure de la profondeur des deformations ondulatoires de la surface de roulement des rails d'une voie ferree.
DE3444723A1 (de) * 1984-12-07 1986-06-12 Richard Gehrcke Vorrichtung zum erfassen der gleisgeometrie mit einem laser
DE3913159A1 (de) * 1989-04-21 1990-10-25 Linsinger Maschinenbau Gmbh Verfahren und vorrichtung zur messung von wellenfoermigen deformationen an wenigstens einer schienenoberseite (schienenlaufflaeche) eines schienenweges
AU2003258632A1 (en) * 2002-09-24 2004-04-19 Db Netz Ag Reconstruction of original signals from relative measurements
DE102008062143B3 (de) * 2008-12-16 2010-05-12 Db Netz Ag Verfahren zur Bestimmung der vertikalen Gleislage des schienengebundenen Eisenbahnverkehrs

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DE102009031819A1 (de) 2011-01-05
DE102009031819B4 (de) 2016-05-04
EP2269887A1 (fr) 2011-01-05

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