Thanks. I thought that too and forgot to mention it. However, my understanding is that beat frequencies won't be present in structural measurements. The data is from accels. There actually has to be a forcing to get a response.
We also have bellow actuators in the system. they have a natural...
This machine has 3 rotating assembles that run at 13.6 Hz, 17 Hz and 19.7 Hz. I am seeing a very strong 3.4 Hz signal which translates into a very large displacement. I can't figure out the source. It only exists when the machine is running other nearby operations don't contribute. The closest...
