Constraint Types "Map" and "Curve"

Selecting variables

  • In the Show column, activate the checkbox for the constraint you want to edit.

    The constraint is displayed in the lower part of the window. The drop-down lists x-Axis and y-Axis (and z-Axis for maps) are provided.

  • In the drop-down lists, assign the relevant inputs to the axes.

    In the case of a curve, the functional dependency is y(x); in the case of a map, the functional dependency is z(x,y).

Graphical Display of Measurement Points and Constraint

If a completely specified constraint is selected in the list, the measurement points of the current experiment plan are displayed in a 2D (Curve, see ASCMO-STATIC ExpeDes Step 2: Constraints (Type "Curve")) or 3D plot (Map).

Since both inputs feature the property "clustered" (see Step 3: Input Design Types ), the result is a pure grid.

The display of the measurement points is controlled via the Measurement option (region D in ASCMO-STATIC ExpeDes Step 2: Constraints (Type "Curve")). In addition, the thicker points of the grid with which the constraint of areas is controlled are also displayed (see Table for Displaying and Editing the Grid Nodes).

Constraining the measurement range

  • In the Show column, activate the checkbox for the constraint you want to edit.

    The constraint is displayed in the lower part of the window.

  • In the constraint plot (region C in ASCMO-STATIC ExpeDes Step 2: Constraints (Type "Curve")), click a point of the constraining line/area and hold the mouse button pressed.

    The mouse pointer changes to a double arrow.

  • Drag the point to the desired position.

    The figure shows a limitation of the load at lower speeds.

  • In the Processing Method area, activate an option to determine the way points outside the constraints are treated.

    See Display Options list for a description of the options.

The display of the plot can also be influenced here with the Zoom In, Zoom Out, Pan, and Rotate 3D buttons in the toolbar.

The numeric values of the constraining points are shown in the tables on the right (Upper and Lower tabs; region E in ASCMO-STATIC ExpeDes Step 2: Constraints (Type "Curve")) and can be processed in these (both in terms of quantity and value); see Table for Displaying and Editing the Grid Nodes.

Further functions for specifying and displaying constraints are:

  • Display Options

    • Measurement: Display of measurement points calculated by all defined constraints

    • Upper/Lower: Display of the upper/lower limits defined by the constraint

    • Points Deleted: Number of measurement points deleted by the constraint

  • Processing Method: If the measurement range is constrained, there are several options to handle the number of measurement points

    • Cutoff: Removes the points outside the constraint, leaving the points inside the constraint the same. The number of deleted points is shown above (Points Deleted).

    • Limit: Points outside the constraint are set to the value of the constraint. Points inside the constraint remain unchanged.
    • Shrink: All points are scaled proportionally by the range defined by the upper and lower constraints. This option moves the points into the measuring range so that the measuring points are closer together.
    • Cutoff Inside: Removes the points inside the constraint and keeps the points outside the constraint. The number of deleted points is shown above (Points Deleted).

  • Global Limits: The global limits of the variables to be limited (as defined in the constraints list; see Step 1: General Settings).

Table for Displaying and Editing the Grid Nodes

The grid nodes can be edited in the tables to the right of the plot (region E in ASCMO-STATIC ExpeDes Step 2: Constraints (Type "Curve")). One tab each is available for the upper and lower constraint.

Changing the number of grid nodes

To change the number of points that define the constraining curves/maps, proceed as follows.

Note  

The number of points must be in the range [2 .. 20].

  • Click Redefine Grid.

    The Constraint: Redefine Grid window opens.


  • To change the number of points on a constraint axis, do the following:

    • In the drop-down list for the constraint axis, select Count.

      The number of points is displayed in the input field for the respective constraint axis.

    • Enter the desired number.

  • To enter the grid vector for a constraint axis directly, do the following:

    • In the drop-down list for the constraint axis, select Vector.

      The vector is displayed in the input field for the respective constraint axis.

    • Edit the vector values as desired.

      Note  

      With type Count, the grid points are equidistant. With type Vector, you can distribute the grid points unevenly.

  • Click OK.

    The points are adjusted accordingly. The Constraint: Redefine Grid window closes.