Design Folio

DOE++ 9 includes two kinds of folios for design of experiments: the standard design folio and the robust design folio.

Standard designs are used for identifying important factors (i.e., "screening") and determining the best settings for these factors (i.e., "optimization"). They can also be used for simple one factor designs that allow you to compare the response at different factor levels. To create a standard design folio, choose Insert > DOE > Add Standard Design.

Robust designs are used to minimize the system's sensitivity to noise factors (i.e., "robustness testing"). Robust design folios include all the functionality of the standard design folio, with the addition of some features specific to the robust design methodology. To create a robust design folio, choose Insert > DOE > Add Robust Design.

What’s Changed? The Synthesis version of DOE++ uses separate folios for standard and robust designs. Version 1 used the same "standard folio" for both types of designs.

When the folio first appears, only the Design tab will be displayed, which allows you to configure an experiment design. After you have specified all of the settings on the Design tab, choose Design > General > Build Design or click the icon on the control panel.

This will create a second tab called Data that a) shows a “plan” for how the experiment needs to be performed and b) allows you to enter and analyze response data from an experiment that follows that plan. (If you want to change the experiment design settings after the Data tab has already been created, see Changing Design Settings.) After you analyze the data, a summary of results (including the factors that were found to be significant) will appear on the control panel.

Tip: This documentation assumes that you will first design an experiment, then perform it, and then enter and analyze the resulting data. However, if you already have data available from a prior experiment, you can also use the Design tab to build a design that reflects the prior experiment and then build the design so you can enter and analyze the results on the Data tab.

After you have entered the response information in the Data tab, you can choose Data > Analysis > Plot or click the icon on the control panel.

This will create a third tab called Analysis Plot that allows you to view all of the graphical plots that are relevant to the current analysis of the response data.

What’s Changed? Design folios in the Synthesis version of DOE++ no longer contain an Analysis tab or an Optimization tab. Detailed analysis results are available in the Analysis Summary window. And optimization is performed in a separate folio that can be linked to the design folio.

The information presented in the topics that follow describes interfaces and procedures that are common to all design types. For specific information about working with certain design types, see one of the following topics: