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Users Manual for Program TRC_TRACMOD  

Table of Contents

Introduction

Program TRC_TRACMOD scales and translates the signals in a track-file.

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

Input data file
The file is read in free format. The columns in the file shall have the same contents as in a trac- trax- or trax_wdesign-file. The extension of the file name determines type of file to be read.
Declared= Character*132    Default= Blank

UTFIL

File containing the output data, written in trac- trax- or trax_wdesign-format. The extension of the file name determines type of file to be written.
Declared= Character*132    Default= Blank

GAUGE_NOM

The average gauge of the track.
The scaling of the gauge is made according to:

                                                                
  spv_out= (spv_in-GAUGE_NOM)*SPVFACT + SPVMOVE + GAUGE_NOM     
                                                                

Declared= Real*4    Default= 1435.

Reading of scale factors

XFACT

Scale factor for column #1, longitudinal distance.
Declared= Real*4    Default= 1.

YFACT

Scale factor for column #2, lateral errors.
Declared= Real*4    Default= 1.

ZFACT

Scale factor for column #3, vertical errors.
Declared= Real*4    Default= 1.

SPVFACT

Scale factor for column #4, gauge.
Declared= Real*4    Default= 1.

RHFACT

Scale factor for column #5, cant errors.
Declared= Real*4    Default= 1.

BENDFACT

Scale factor for column #6, designed curvature.
Declared= Real*4    Default= 1.

CANTFACT

Scale factor for column #7, designed cant.
Declared= Real*4    Default= 1.

ZLIFTFACT

Scale factor for column #8, designed vertical lift.
Declared= Real*4    Default= 1.

Reading of translation constants

XMOVE

Constant to be added to column #1, longitudinal distance.
Declared= Real*4    Default= 0. [m]

YMOVE

Constant to be added to column #2, lateral translation.
Declared= Real*4    Default= 0. [mm]

ZMOVE

Constant to be added to column #3, vertical translation.
Declared= Real*4    Default= 0. [mm]

SPVMOVE

Constant to be added to column #4, gauge translation.
Declared= Real*4    Default= 0. [mm]

RHMOVE

Constant to be added to column #5, cant translation.
Declared= Real*4    Default= 0. [mm]

BENDMOVE

Constant to be added to column #6, designed curvature.
Declared= Real*4    Default= 0. [1/m]

CANTMOVE

Constant to be added to column #7, designed cant.
Declared= Real*4    Default= 0. [rad]

ZLIFTMOVE

Constant to be added to column #8, designed vertical lift.
Declared= Real*4    Default= 0. [m]

Example of an input data file

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

                                                                               
 ##                                                                            
 ##      Input data for program TRC_TRACMOD                                    
 ##                                                                            
                                                                               
   INFIL= $gentrc/K0_4a21-n-k.trac                                             
   UTFIL= test/K0_4a21-n-k_mod.trax                                            
                                                                               
   GAUGE_NOM= 1435.                                                            
                                                                               
   XFACT  = 1.,           XMOVE  = 0.,     # Longitudinal position [m]         
   YFACT  = 1.,           YMOVE  = 0.,     # Lateral error [mm]                
   ZFACT  = 1.,           ZMOVE  = 0.,     # Vertical error [mm]               
   SPVFACT= 1.,           SPVMOVE= 0.,     # Gauge error [mm]                  
   RHFACT = 1.,           RHMOVE = 0.,     # Cant error [mm]                   
                                                                               
   BENDFACT  = 1.,        BENDMOVE  = 0.,   # Designed curvature [1/m]         
   CANTFACT  = 1.,        CANTMOVE  = 0.,   # Designed cant [rad]              
   ZLIFTFACT = 1.,        ZLIFTMOVE = 0.,   # Designed vertical lift [m]