Definition of the variables

The variables (normal variables and auxiliary variables) can either be defined under ”Calculation->Manual input of equations“ on the sheet “Measurement-Values”, or components of the component type 46  “Measured value input“ contained in the model can be used. To do so, either “Normal variable” or “Auxiliary variable” has to be selected for the specification value FVAR of these components.

If variable names modelled by components 46 are used on the other worksheets of the manual input of equations, their component names have to be preceded by two colons.

The screenshots used in this subchapter are based on the EBSILON®Professional  model concerning Sheet III of VDI 2048. In this model, all measured values except two are modelled by components 46. These two measured values are the values HZUKA (an auxiliary variable) and TNDKA (a normal variable). The corresponding table of measured values is shown below for each of the two possible types of validation.

 

One line is allocated to each of the variables (here: measured value):

• Number: is assigned by the system
• Active: Only active variables checked off here are used.
• Name: Name of the variable, to be assigned by the user
• Measured value: Value of the variable
  • Normal variable: to be entered by the user
  • Auxiliary variable: Value is not specified
• Confidence interval: value of the confidence interval
  • Normal variable: to be entered by the user
  • Auxiliary variable: Value is not specified
• Probability: Value between 0 and 1 (e.g. 0.95 for 95 % confidence interval)
• Auxiliary quantity: for differentiating between normal variables and auxiliary variables
• Result value: in the case of both validation methods of the “Manual input of equations”, the value is calculated and entered by the system.
• Calculated confidence interval: in the case of both validation methods of the “Manual input of equations”, the value is calculated and entered by the system.
• Related deviation and relative correction, respectively: the value is only calculated and entered by the system in the case of a validation run in the mode “Manual input of equations for VDI 2048“ (computation of adjustment)
• Comment: Text to be entered by the user for better clarity