Valuating the Ranges of Free Parameters Using Relations

You can valuate free parameters using a relation.

This task shows you how to:

Before you begin:
  • The Engineering Rules Capture app is required to perform this scenario.
  • The subtasks need to be performed in a given order, one after the other.
See Also
Specifying the Algorithm to Run

Create Three Parameters and Assign a Formula to the fxy Function

You can create three parameters an assign a formula to the fxy function.

  1. Create a Representation.
  2. Click Formula to create three parameters.
    • Select Real in the scrolling list and click New parameter of type.
    • In the Edit name or value of the current parameter, enter x and 150. Click Apply.
    • Select Real in the scrolling list and click New parameter of type.
    • In the Edit name or value of the current parameter, enter y and 150. Click Apply
    • Select Real in the scrolling list and click New parameter of type
    • In the Edit name or value of the current parameter, enter fxy, and click Add formula, enter the following formula, and click OK when done :
    fxy=(x-10)*(x-10) + (y-20)*(y-20) + 100

You can now move on to the next subtask.

Create an Optimization

You can create an optimization.

Before you begin:

You should have completed the preceding tasks.

  1. From the Compass, click 3D Modeling Apps and select Design Optimization.
  2. Click Optimization.
    The Optimization tab appears.
  3. Enter the following parameters and click OK when done:
    Optimization typeMinimization
    Optimized parameterfxy
    Free Parametersx and y: Inf. Range: 100 Sup. Range: 200
    Algorithm typeGradient Algorithm Without Constraint

You can now move on to the next subtask.

Create Two Checks

You can create checks that turn to true whenever the value of the free parameters hits the bounds.

Before you begin:

You should have completed the preceding tasks.

  1. From the Compass, click 3D Modeling Apps , and select Engineering Rules Capture.
  2. Click Check . Type the name of the check: Check_Inferior_Range and click OK.
    The Check Editor opens.
  3. Enter the following check body and click OK when done: 
    `Relations\Optimizations.1\Optimization.1\Free
Parameter.1\Inferior Range` == x or
`Relations\Optimizations.1\Optimization.1\Free Parameter.2\Inferior
Range` == y
    Notes:
    • The inferior range value changes (inferior range=x-x/2 each time the optimization is run).
    • The ranges valuation is not taken into account during the algorithm run. Ranges are taken into account at the beginning of each run.
    • You cannot use the context menu to create a formula to valuate the Target Value of the optimization. To do so, use the Formula editor.

You can now move on to the next subtask.

Create a Reaction

This reaction is based on the checks that change the value of the inferior range as soon as one of the checks turns true.

Before you begin:

You should have completed the preceding tasks.

  1. Click Reaction . The Reaction tab appears:
    • In the Source Type box, select Selection and click the Check_Inferior_Range check in the tree. In the Select Source Window, select Result and click OK.
    • In the Available events list, select ValueChange.
      • Click Edit action.... The Action Editor appears. Enter the following action body and click OK twice when done:
        `Relations\Optimizations.1\Optimization.1\Free
Parameter.1\Inferior Range` = x - x/2
    • Right-click the reaction in the tree, rename it into Inferior_Range_Reaction using Properties.
  2. Click Reaction . The Reaction tab appears:
    • In the Source Type box, select Selection and click the Check_Inferior_Range check. In the Select Source Window, select Result and click OK.
    • In the Available events list, select ValueChange.
    • Click Edit action.... The Action Editor appears. Enter the following action body and click OK twice when done :
      `Relations\Optimizations.1\Optimization.1\Free
Parameter.2\Inferior Range` = x - x/2
    • Right-click the reaction in the tree, rename it rename it into Superior_Range_Reaction using the Properties command.
  3. Double-click Optimization.1 twice and click Run Optimization until x=100.