I have torsional rpm data (taken with a high pulse per revolution) that I would like to remove the mean/average rpm from in the time domain data.
Is there a good way to do this in LMS Test.Lab? I tried doing a high pass filter, but did not like the results.
In the picture attached, I would like to center the rpms around 0 rpm, or close to it.
Solved! Go to Solution.
Rather than use a filter, you might want to consider (using a 120 pulse/rev example):
Here are the steps in Time Signal Calculator:
1. First calculate the torsional data with a high pulse per revolution (for example, use “pulses_per_rev” of 120, and “pulses_to_skip” of 0), using either Time Signal Calculator command below:
2. Next calculate the mean/average rpm with “pulses_per_rev” of 1, and “pulses_to_skip” of 119.
3. Subtract the two traces from step 1 and 2.
The Time Signal Calculator menu could look like this:
Final results should look like below: