Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Navigation
- Simcenter
- Forums
- Blogs
- Knowledge Bases

- Siemens PLM Community
- Simcenter
- Testing Forum
- Average and/or standard deviation of PSDs?

Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Email to a Friend
- Report Inappropriate Content

10-30-2016 07:52 PM

I have a vibration standard that requires an average and the average + one standard deviation of my Power Spectral Density (PSD) functions.

In LMS Test.Lab, how do I calculate an average + one standard deviation on a group of PSD functions?

Solved! Go to Solution.

Labels:

1 REPLY

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Email to a Friend
- Report Inappropriate Content

10-30-2016 08:03 PM

Hi,

You can use the LMS Test.Lab Data Calculator function in LMS Test.Lab Navigator worksheet.

Put the PSDs functions in the Input Basket by right clicking on data and choosing “Add to input basket”.

Click on “Data Calculator” and press the “Add from Input Basket” button in the data set area.

In the Active Formula Set area, add a formula “AVERAGE” (click on the "f(x)" button to get formulas)

In the “Edit Formula arguments”, enter the following:

F1, F2 and F3 refer to the PSD functions in the Dataset area. It may be necessary to pick “New Function” button to enter all three.

Use the AVERAGE function twice:

- The output should be set to “1” to get the average
- The output should be set to “2” to get the average plus the standard deviation.

Also set the Point id for the resulting calculation by filling in the Point Id field:

Press the “Calculate” button. ‘Average’ will be at F4 and ‘Ave+StdDev’ will be at F5.

Click the “Save Results As” button to store results to the current project.

Follow Siemens PLM Software

© 2017 Siemens Product Lifecycle Management Software Inc