Home    Search    Reference Manuals    Return    Track Group Documentation





Users Manual for Program TRC_QNUMB_MAUZ





Table of Contents

   Introduction
   Calculation procedure
   Input data commands
   Example



Introduction

Program TRC_QNUMB_MAUZ calculates the track alignment quality of a track written in mauz-format. The alignment quality is measured in a so called Q-number defined by Banverket, Sweden. The definition of the Q-number is defined in BVF 541.60 written by Banverket, Sweden. A short description of the Q-number is given in this manual under Calculation procedure.



Calculation procedure

  1. Read the Mauzin-registration written in *.mauz-format.
  2. Calculate the Q-number according to:
    2.1 Vertical errors:
    2.1.1 High pass filter column #1 and #2 in a FIR-filter according to fig. 10.6 in BVF 541.60 written by Banverket.
    2.1.2 Calculate the average value of column #1 and #2.
    2.1.3 Calculate the standard deviation of the average value, the standard deviation σH.
    2.2 Lateral errors:
    2.2.1 High pass filter column #5 and #6 in a FIR-filter according to fig. 10.8 in BVF 541.60 written by Banverket.
    2.2.2 Calculate the standard deviation of the lateral irregularities. The lateral track irregularity signal is the best column of #5 and #6.
    2.3 Cant errors:
    2.3.1 High pass filter column #3 in a FIR-filter according to fig. 10.7 in BVF 541.60 written by Banverket.
    2.3.2 Calculate the standard deviation of the cant errors.
    2.4 Samverkan errors:
    2.4.1 Add the two signals in phase, lateral errors and cant errors.
    2.4.2 Calculate the standard deviation of the sum, the sum is denoted σS (samverkan).
    2.5 Calculate the Q-number per kilometer according to the following formula: Q-numb-formula.gif
    Where:
    σH and σS = Average standard deviation for "vertical" and "samverkan" errors
    σHgr and σSgr = Comfort limits for the track alignment in actual class.

    Quality-
    class
    sth
    Train with locomotive
    sth
    High speed trans

    σHgr

    σSgr
    K0 145- 185- 0.9 2.4
    K1 125-140 160-180 1.1 3.0
    K2 105-120 135-155 1.3 3.6
    K3 75-100 95-130 1.7 4.5
    K4 40- 70 60- 90 2.2 6.0
    K5 - 40   2.7 7.5



Input data commands

Input data is read in free format, valid separators between the input values are <space>, <comma>, <tab>, <equal sign> or <carriage return>. The commands can be written both in lower and upper case letters. The operation of the program is controlled by the commands described below; some of the commands also need arguments.

INFIL
Track data file written in trac- or trax- format.
Declared= Character*132    Default= Blank

L_INTERVAL
Length of track sections for which evaluation of standard deviation and Q-numbers will take place.
Declared= Integer*4    Default= 200


Example of an input data file

Following example: Master.trc_qnumb_mauzf can be used as a master file:

##
##      Input data for program Trc_qnumb_mauz 
##

  INFIL= track_irr1.mauz

  L_INTERVAL= 200