Running OptQuest

  To optimize these goals in OptQuest, reset the simulation in Crystal Ball and:

  1. Open the Crystal Ball Run Preferences dialog and set Number Of Trials To Run to 1000. For this example, Sampling was set to Latin Hypercube with an Initial Seed Value of 999 (set on the Sampling tab of the Run Preferences dialog).

  2. Choose Run, then OptQuest.

  3. When the OptQuest wizard opens, click Objectives in the navigation pane to display the Objectives panel if it is not already onscreen.

  4. Confirm that the Objectives panel opens, as shown in Figure 183, Forecast Optimization Defined in OptQuest.

    Figure 183. Forecast Optimization Defined in OptQuest

    This figure displays the Objectives panel.
  5. Click Next until you reach the Options panel (Figure 184, OptQuest Options panel, following).

    Figure 184. OptQuest Options panel

    This figure displays the forecast optimization defined in OptQuest.
  6. Choose Run For 1000 Simulations, then click Run.

    OptQuest starts looking for the best feasible solution. Ultimately a solution will be found that is similar to that shown in Figure 185, OptQuest Solution for the Fluid Pump Problem.

    Figure 185. OptQuest Solution for the Fluid Pump Problem

    This figure displays the OptQuest solution for the fluid pump problem.

the optimized values should be similar to these:

OptionOptimized Value

Total cost

$33.66

Zst (sigma level)

3.14

Backflow valve option

3

Motor option

2

Piston radius (mm)

33.38

Piston radius standard deviation

0.249

Stroke length (cm)

28.60

Stroke length standard deviation

0.214