Got a lot of repetitive shaker tests to run on a lot of different parts? Use the Test Sequencing feature of Simcenter Testlab Vibration Control to automatically run a series of control tests.
For example, if sine, random, and shock tests must be run, a job file can be created that will automatically load and run each test mode as shown in Figure 1.
The Test Sequencing software will automatically step between tests without requiring any user interaction. Of course, if any kind of error or problem is detected while executing the test, the software will stop and wait for user input.
This article explains how to use the Test Sequencing software, and has the following sections:
1. Getting Started
Simcenter Testlab Test Sequencing can be run with 24 tokens, if using Simcenter Testlab tokens. In addition to the tokens needed to run Test Sequencing, tokens will also be needed to run the individual control modes (random, sine, etc).
Test Sequencing can be started by selecting the “Test Sequencing” icon from the Testlab Environmental folder as shown in Figure 2.
The Test Sequencing menu will appear (Figure 3).
There are some key sections in the menu:
The goal is to create a list or sequence of tests, and then have them executed.
2. Creating a Test Sequence List
From the pulldown menu, select the type of test to be added to the sequence list as shown in Figure 4.
In the pulldown, a few different things can be specified:
Then select the project file (*.lms) and section within the project with the test settings that corresponds to the test type as shown in Figure 5.
After selecting the project and section, a run name can be entered. This is a user defined field. When the measurement is performed, this name will be used for the measurement.
After defining the project and test, under “Edit Sequence” select either “Insert After” or “Insert Before” to add the test to the sequence list as shown in Figure 6.
The defined project/test will be inserted into the list either before or after the highlighted row as desired. If there is nothing in the list, selecting “Insert After” versus “Insert Before” makes no difference.
When inserting different tests, it is possible for the job numbers to no longer be in numerical order. Use the “Reassign Numbers” button to reset the numbers.
It is also possible to modify existing jobs in the test sequence. Double click on the job to be modified, then select “Edit Sequence -> Modify”.
Once the list is completed, the tests can be started.
In the lower right corner of the Test Sequence menu, select the “Start” button to run through the test sequence (Figure 8).
The test sequencer will automatically start Simcenter Testlab Vibration Control in the background (Figure 9).
Each line in the test sequence does the following:
If seeing the vibration control software running in the background is not desirable, then choose “Options -> Always on Top” in the Test Sequencing menu as shown in Figure 10.
Of course, it might be nice to have two screens – one with Test Sequencing, the other showing the actual test data being acquired.
Note that the duration of each test comes from the settings specified in the project file. It is not settable from the test sequencing menu itself.
4. Saving a Test Sequence List
After creating a test sequence list, it can be stored for later retrieval. Under “File”, select “Save Job File As…” to store the list away as shown in Figure 11.
If the same job list ever needs to be run again, it can be reloaded under the same menu.
Enjoy Simcenter Testlab Test Sequencing!