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 mauzformat.
The alignment quality is measured in a so called Qnumber defined by Banverket, Sweden.
The definition of the Qnumber is defined in BVF 541.60 written by Banverket, Sweden.
A short description of the Qnumber is given in this manual under
Calculation procedure.
Calculation procedure
 Read the Mauzinregistration written in *.mauzformat.
 Calculate the Qnumber according to:
2.1.1  High pass filter column #1 and #2 in a FIRfilter 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 σ_{H}. 
2.2.1  High pass filter column #5 and #6 in a FIRfilter 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. 
2.3.1  High pass filter column #3 in a FIRfilter according to fig. 10.7 in BVF 541.60 written by Banverket. 
2.3.2  Calculate the standard deviation of the cant errors. 
2.4.1  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 σ_{S} (samverkan). 
2.5  Calculate the Qnumber per kilometer according to the following formula:
Where:
σ_{H}  and  σ_{S}  =  Average standard deviation for "vertical" and "samverkan" errors 
σ_{Hgr}  and  σ_{Sgr}  =  Comfort limits for the track alignment in actual class. 
Quality class  sth Train with locomotive  sth High speed trans  σ_{Hgr}  σ_{Sgr} 
K0  145  185  0.9  2.4 
K1  125140  160180  1.1  3.0 
K2  105120  135155  1.3  3.6 
K3  75100  95130  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 Qnumbers 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