4.13. Design Variable

A design variable is created from a Parametric Value. The Parametric Value associates a real value with a character string label, and it can be defined using the Create menu. The user must define Parametric Value prior to or as part of the creation of the design variable.

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Figure 4.162 Design Variable List dialog box

  • No: Shows the number of design variables.

  • Use: If you check this option, the DV is used by the DOE.

  • Name: Shows the name of design variable.

  • Description: Shows the description of design variable.

  • Value: Shows the defined PV Name.

  • Lower: Shows the lower value among the calculated values.

  • Current: Shows the current value.

  • Upper: Shows the upper value among the calculated values.

  • No. Points: The number of points.

  • DV: If you click the button, DV value can be modified.

  • Create: Creates a design variable.

  • Insert: Inserts a design variable at the current cursor row.

  • Delete: Deletes a design variable at the current cursor row.

  • Create or Insert as shown in Figure 4.162 and the Design Variable dialog box appears as shown in Figure 4.163, but with blank fields.

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    Figure 4.163 Design variable dialog box

    • Name: Specifies the name of design variable.

    • Value: Specifies the parametric value as desired.

    • R: Refreshes the value of the parametric value.

    • Value Range: Choose the type to define range of design variable. It is three types that are Absolute Min And Max Value, +/- Delta relative to Value and +/- Percent relative to Value.

      • Absolute Min And Max Value: Defines the Min Value and Max Value that are fixed.

      • +/- Delta relative to Value: Defines the - Delta and + Delta. Min value is calculated as the parametric value minus - Delta and max value is calculated as the parametric value plus + Delta.

      • +/- Percent relative to Value: Defines the - Delta [%] and + Delta [%]. Min value is calculated as -Delta [%] percent of the parametric value and max value is calculated as + Delta [%] percent of the parametric value.

    • Use Edit Value: If you check this option, the user can show the calculated values and edit these in the input field.

      • Min, Std, Max: Generates the design variable as just min, std and max value.

      • Equally Spaced: Generates the design variable as dividing between min and max value as the value in the The Number of Values as.

      • Generate: Shows the defined values

    • PV: Accesses the Parametric Value dialog box.